import

23 files changed, 1370 insertions, 0 deletions

diff --git a/.classpath b/.classpath
new file mode 100644
index 0000000..6efcbb7
--- /dev/null
+++ b/.classpath
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="con" path="com.android.ide.eclipse.adt.ANDROID_FRAMEWORK"/>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="src" path="gen"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>
diff --git a/.project b/.project
new file mode 100644
index 0000000..7b56596
--- /dev/null
+++ b/.project
@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>AltosDroid</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>com.android.ide.eclipse.adt.ResourceManagerBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>com.android.ide.eclipse.adt.PreCompilerBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>com.android.ide.eclipse.adt.ApkBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>com.android.ide.eclipse.adt.AndroidNature</nature>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>
diff --git a/.settings/org.eclipse.jdt.core.prefs b/.settings/org.eclipse.jdt.core.prefs
new file mode 100644
index 0000000..e5d1cd3
--- /dev/null
+++ b/.settings/org.eclipse.jdt.core.prefs
@@ -0,0 +1,5 @@
+#Wed Sep 28 19:51:24 NZDT 2011
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.5
+org.eclipse.jdt.core.compiler.compliance=1.5
+org.eclipse.jdt.core.compiler.source=1.5
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
new file mode 100644
index 0000000..b72f038
--- /dev/null
+++ b/AndroidManifest.xml
@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2009 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+      package="org.altusmetrum.AltosDroid"
+      android:versionCode="1"
+      android:versionName="1.0">
+    <uses-sdk minSdkVersion="6" />
+    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
+    <uses-permission android:name="android.permission.BLUETOOTH" />
+
+    <application android:label="@string/app_name"
+                 android:icon="@drawable/app_icon" >
+        <activity android:label="@string/app_name"
+                  android:configChanges="orientation|keyboardHidden" android:name="org.altusmetrum.AltosDroid.AltosDroid">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+        <activity android:name=".DeviceListActivity"
+                  android:label="@string/select_device"
+                  android:theme="@android:style/Theme.Dialog"
+                  android:configChanges="orientation|keyboardHidden" />
+    </application>
+</manifest>
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..577fe1b
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,30 @@
+SDK=/home/keithp/src/android/android-sdk-linux
+DX=$(SDK)/platform-tools/dx
+ADB=$(SDK)/platform-tools/adb
+PLATFORM=$(SDK)/platforms/android-10
+TOOLS_LIB=$(SDK)/tools/lib
+CLASSPATH=".:$(PLATFORM)/*:$(TOOLS_LIB)/*"
+CLASSES=classes
+CLASSPATH_ENV=mkdir $(CLASSES); CLASSPATH=$(CLASSPATH)
+SRC_DIR=src/org/altusmetrum/AltosDroid
+GEN_DIR=gen/org/altusmetrum/AltosDroid
+JAVAC=javac
+JAVACFLAGS=-d $(CLASSES)
+
+SRC=\
+	$(SRC_DIR)/AltosDroid.java \
+	$(SRC_DIR)/BluetoothChatService.java \
+	$(SRC_DIR)/DeviceListActivity.java \
+	$(GEN_DIR)/R.java
+
+all: class.stamp AltosDroid.apk
+
+class.stamp: $(SRC)
+	$(CLASSPATH_ENV) $(JAVAC) $(JAVACFLAGS) $(SRC) && touch class.stamp
+
+AltosDroid.apk: class.stamp
+	$(DX) --dex --verbose --output=$@ AndroidManifest.xml $(CLASSES) && \
+	jarsigner -keystore ./keystore -storepass altusmetrum $@ bob
+
+install: AltosDroid.apk
+	$(ADB) -e install -r AltosDroid.apk
diff --git a/bin/AltosDroid.apk b/bin/AltosDroid.apk
new file mode 100644
index 0000000..56e7bb9
--- /dev/null
+++ b/bin/AltosDroid.apk
diff --git a/bin/classes.dex b/bin/classes.dex
new file mode 100644
index 0000000..f53c2a0
--- /dev/null
+++ b/bin/classes.dex
diff --git a/bin/resources.ap_ b/bin/resources.ap_
new file mode 100644
index 0000000..cf01206
--- /dev/null
+++ b/bin/resources.ap_
diff --git a/default.properties b/default.properties
new file mode 100644
index 0000000..66db0d1
--- /dev/null
+++ b/default.properties
@@ -0,0 +1,11 @@
+# This file is automatically generated by Android Tools.
+# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
+#
+# This file must be checked in Version Control Systems.
+#
+# To customize properties used by the Ant build system use,
+# "build.properties", and override values to adapt the script to your
+# project structure.
+
+# Project target.
+target=android-10
diff --git a/gen/org/altusmetrum/AltosDroid/R.java b/gen/org/altusmetrum/AltosDroid/R.java
new file mode 100644
index 0000000..66f3449
--- /dev/null
+++ b/gen/org/altusmetrum/AltosDroid/R.java
@@ -0,0 +1,66 @@
+/* AUTO-GENERATED FILE.  DO NOT MODIFY.
+ *
+ * This class was automatically generated by the
+ * aapt tool from the resource data it found.  It
+ * should not be modified by hand.
+ */
+
+package org.altusmetrum.AltosDroid;
+
+public final class R {
+    public static final class attr {
+    }
+    public static final class drawable {
+        public static final int app_icon=0x7f020000;
+    }
+    public static final class id {
+        public static final int button_scan=0x7f060006;
+        public static final int button_send=0x7f060009;
+        public static final int discoverable=0x7f06000c;
+        public static final int edit_text_out=0x7f060008;
+        public static final int in=0x7f060007;
+        public static final int insecure_connect_scan=0x7f06000b;
+        public static final int new_devices=0x7f060005;
+        public static final int paired_devices=0x7f060003;
+        public static final int secure_connect_scan=0x7f06000a;
+        public static final int title_left_text=0x7f060000;
+        public static final int title_new_devices=0x7f060004;
+        public static final int title_paired_devices=0x7f060002;
+        public static final int title_right_text=0x7f060001;
+    }
+    public static final class layout {
+        public static final int custom_title=0x7f030000;
+        public static final int device_list=0x7f030001;
+        public static final int device_name=0x7f030002;
+        public static final int main=0x7f030003;
+        public static final int message=0x7f030004;
+    }
+    public static final class menu {
+        public static final int option_menu=0x7f050000;
+    }
+    public static final class string {
+        public static final int app_name=0x7f040000;
+        public static final int bt_not_enabled_leaving=0x7f040003;
+        public static final int button_scan=0x7f04000d;
+        public static final int discoverable=0x7f040010;
+        public static final int insecure_connect=0x7f04000f;
+        public static final int none_found=0x7f04000a;
+        public static final int none_paired=0x7f040009;
+        public static final int not_connected=0x7f040002;
+        /**   DeviceListActivity 
+         */
+        public static final int scanning=0x7f040007;
+        /**  Options Menu 
+         */
+        public static final int secure_connect=0x7f04000e;
+        public static final int select_device=0x7f040008;
+        /**   BluetoothChat 
+         */
+        public static final int send=0x7f040001;
+        public static final int title_connected_to=0x7f040005;
+        public static final int title_connecting=0x7f040004;
+        public static final int title_not_connected=0x7f040006;
+        public static final int title_other_devices=0x7f04000c;
+        public static final int title_paired_devices=0x7f04000b;
+    }
+}
diff --git a/keystore b/keystore
new file mode 100644
index 0000000..00739d0
--- /dev/null
+++ b/keystore
diff --git a/res/drawable-hdpi/app_icon.png b/res/drawable-hdpi/app_icon.png
new file mode 100644
index 0000000..8836ff6
--- /dev/null
+++ b/res/drawable-hdpi/app_icon.png
diff --git a/res/drawable/app_icon.png b/res/drawable/app_icon.png
new file mode 100644
index 0000000..d3e09a5
--- /dev/null
+++ b/res/drawable/app_icon.png
diff --git a/res/layout/custom_title.xml b/res/layout/custom_title.xml
new file mode 100644
index 0000000..57eb6b4
--- /dev/null
+++ b/res/layout/custom_title.xml
@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2009 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:gravity="center_vertical"
+  >
+  <TextView android:id="@+id/title_left_text"
+      android:layout_alignParentLeft="true"
+      android:ellipsize="end"
+      android:singleLine="true"
+      style="?android:attr/windowTitleStyle"
+      android:layout_width="wrap_content"
+      android:layout_height="match_parent"
+      android:layout_weight="1"
+    />
+    <TextView android:id="@+id/title_right_text"
+        android:layout_alignParentRight="true"
+        android:ellipsize="end"
+        android:singleLine="true"
+        android:layout_width="wrap_content"
+        android:layout_height="match_parent"
+        android:textColor="#fff"
+        android:layout_weight="1" 
+    />
+</RelativeLayout>
\ No newline at end of file
diff --git a/res/layout/device_list.xml b/res/layout/device_list.xml
new file mode 100644
index 0000000..395695f
--- /dev/null
+++ b/res/layout/device_list.xml
@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2009 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    >
+    <TextView android:id="@+id/title_paired_devices"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/title_paired_devices"
+        android:visibility="gone"
+        android:background="#666"
+        android:textColor="#fff"
+        android:paddingLeft="5dp"
+    />
+    <ListView android:id="@+id/paired_devices"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:stackFromBottom="true"
+        android:layout_weight="1"
+    />
+    <TextView android:id="@+id/title_new_devices"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/title_other_devices"
+        android:visibility="gone"
+        android:background="#666"
+        android:textColor="#fff"
+        android:paddingLeft="5dp"
+    />
+    <ListView android:id="@+id/new_devices"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:stackFromBottom="true"
+        android:layout_weight="2"
+    />
+    <Button android:id="@+id/button_scan"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/button_scan"
+    />
+</LinearLayout>
\ No newline at end of file
diff --git a/res/layout/device_name.xml b/res/layout/device_name.xml
new file mode 100644
index 0000000..8fa358c
--- /dev/null
+++ b/res/layout/device_name.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2009 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<TextView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:textSize="18sp"
+    android:padding="5dp"
+/>
\ No newline at end of file
diff --git a/res/layout/main.xml b/res/layout/main.xml
new file mode 100644
index 0000000..17025f6
--- /dev/null
+++ b/res/layout/main.xml
@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2009 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    >
+    <ListView android:id="@+id/in"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:stackFromBottom="true"
+        android:transcriptMode="alwaysScroll"
+        android:layout_weight="1"
+    />
+    <LinearLayout
+        android:orientation="horizontal"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        >
+        <EditText android:id="@+id/edit_text_out"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:layout_gravity="bottom"
+        />
+        <Button android:id="@+id/button_send"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/send"
+        />
+    </LinearLayout>
+</LinearLayout>
diff --git a/res/layout/message.xml b/res/layout/message.xml
new file mode 100644
index 0000000..8fa358c
--- /dev/null
+++ b/res/layout/message.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2009 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<TextView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:textSize="18sp"
+    android:padding="5dp"
+/>
\ No newline at end of file
diff --git a/res/menu/option_menu.xml b/res/menu/option_menu.xml
new file mode 100644
index 0000000..18de725
--- /dev/null
+++ b/res/menu/option_menu.xml
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2009 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:id="@+id/secure_connect_scan"
+          android:icon="@android:drawable/ic_menu_search"
+          android:title="@string/secure_connect" />
+    <item android:id="@+id/insecure_connect_scan"
+          android:icon="@android:drawable/ic_menu_search"
+          android:title="@string/insecure_connect" />
+    <item android:id="@+id/discoverable"
+          android:icon="@android:drawable/ic_menu_mylocation"
+          android:title="@string/discoverable" />
+</menu>
diff --git a/res/values/strings.xml b/res/values/strings.xml
new file mode 100644
index 0000000..53af2a3
--- /dev/null
+++ b/res/values/strings.xml
@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2009 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<resources>
+    <string name="app_name">Bluetooth Chat</string>
+
+    <!--  BluetoothChat -->
+    <string name="send">Send</string>
+    <string name="not_connected">You are not connected to a device</string>
+    <string name="bt_not_enabled_leaving">Bluetooth was not enabled. Leaving Bluetooth Chat.</string>
+    <string name="title_connecting">connecting...</string>
+    <string name="title_connected_to">connected: </string>
+    <string name="title_not_connected">not connected</string>
+
+    <!--  DeviceListActivity -->
+    <string name="scanning">scanning for devices...</string>
+    <string name="select_device">select a device to connect</string>
+    <string name="none_paired">No devices have been paired</string>
+    <string name="none_found">No devices found</string>
+    <string name="title_paired_devices">Paired Devices</string>
+    <string name="title_other_devices">Other Available Devices</string>
+    <string name="button_scan">Scan for devices</string>
+
+    <!-- Options Menu -->
+    <string name="secure_connect">Connect a device - Secure</string>
+    <string name="insecure_connect">Connect a device - Insecure</string>
+    <string name="discoverable">Make discoverable</string>
+</resources>
diff --git a/src/org/altusmetrum/AltosDroid/AltosDroid.java b/src/org/altusmetrum/AltosDroid/AltosDroid.java
new file mode 100644
index 0000000..844ca39
--- /dev/null
+++ b/src/org/altusmetrum/AltosDroid/AltosDroid.java
@@ -0,0 +1,357 @@
+/*
+ * Copyright (C) 2009 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.altusmetrum.AltosDroid;
+
+import android.app.Activity;
+import android.bluetooth.BluetoothAdapter;
+import android.bluetooth.BluetoothDevice;
+import android.content.Intent;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.Message;
+import android.util.Log;
+import android.view.KeyEvent;
+import android.view.Menu;
+import android.view.MenuInflater;
+import android.view.MenuItem;
+import android.view.View;
+import android.view.Window;
+import android.view.View.OnClickListener;
+import android.view.inputmethod.EditorInfo;
+import android.widget.ArrayAdapter;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.ListView;
+import android.widget.TextView;
+import android.widget.Toast;
+import org.altusmetrum.AltosDroid.R;
+
+/**
+ * This is the main Activity that displays the current chat session.
+ */
+public class AltosDroid extends Activity {
+    // Debugging
+    private static final String TAG = "BluetoothChat";
+    private static final boolean D = true;
+
+    // Message types sent from the BluetoothChatService Handler
+    public static final int MESSAGE_STATE_CHANGE = 1;
+    public static final int MESSAGE_READ = 2;
+    public static final int MESSAGE_WRITE = 3;
+    public static final int MESSAGE_DEVICE_NAME = 4;
+    public static final int MESSAGE_TOAST = 5;
+
+    // Key names received from the BluetoothChatService Handler
+    public static final String DEVICE_NAME = "device_name";
+    public static final String TOAST = "toast";
+
+    // Intent request codes
+    private static final int REQUEST_CONNECT_DEVICE_SECURE = 1;
+    private static final int REQUEST_CONNECT_DEVICE_INSECURE = 2;
+    private static final int REQUEST_ENABLE_BT = 3;
+
+    // Layout Views
+    private TextView mTitle;
+    private ListView mConversationView;
+    private EditText mOutEditText;
+    private Button mSendButton;
+
+    // Name of the connected device
+    private String mConnectedDeviceName = null;
+    // Array adapter for the conversation thread
+    private ArrayAdapter<String> mConversationArrayAdapter;
+    // String buffer for outgoing messages
+    private StringBuffer mOutStringBuffer;
+    // Local Bluetooth adapter
+    private BluetoothAdapter mBluetoothAdapter = null;
+    // Member object for the chat services
+    private BluetoothChatService mChatService = null;
+
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        if(D) Log.e(TAG, "+++ ON CREATE +++");
+
+        // Set up the window layout
+        requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
+        setContentView(R.layout.main);
+        getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.custom_title);
+
+        // Set up the custom title
+        mTitle = (TextView) findViewById(R.id.title_left_text);
+        mTitle.setText(R.string.app_name);
+        mTitle = (TextView) findViewById(R.id.title_right_text);
+
+        // Get local Bluetooth adapter
+        mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
+
+        // If the adapter is null, then Bluetooth is not supported
+        if (mBluetoothAdapter == null) {
+            Toast.makeText(this, "Bluetooth is not available", Toast.LENGTH_LONG).show();
+            finish();
+            return;
+        }
+    }
+
+    @Override
+    public void onStart() {
+        super.onStart();
+        if(D) Log.e(TAG, "++ ON START ++");
+
+        // If BT is not on, request that it be enabled.
+        // setupChat() will then be called during onActivityResult
+        if (!mBluetoothAdapter.isEnabled()) {
+            Intent enableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
+            startActivityForResult(enableIntent, REQUEST_ENABLE_BT);
+        // Otherwise, setup the chat session
+        } else {
+            if (mChatService == null) setupChat();
+        }
+    }
+
+    @Override
+    public synchronized void onResume() {
+        super.onResume();
+        if(D) Log.e(TAG, "+ ON RESUME +");
+
+        // Performing this check in onResume() covers the case in which BT was
+        // not enabled during onStart(), so we were paused to enable it...
+        // onResume() will be called when ACTION_REQUEST_ENABLE activity returns.
+        if (mChatService != null) {
+            // Only if the state is STATE_NONE, do we know that we haven't started already
+            if (mChatService.getState() == BluetoothChatService.STATE_NONE) {
+              // Start the Bluetooth chat services
+              mChatService.start();
+            }
+        }
+    }
+
+    private void setupChat() {
+        Log.d(TAG, "setupChat()");
+
+        // Initialize the array adapter for the conversation thread
+        mConversationArrayAdapter = new ArrayAdapter<String>(this, R.layout.message);
+        mConversationView = (ListView) findViewById(R.id.in);
+        mConversationView.setAdapter(mConversationArrayAdapter);
+
+        // Initialize the compose field with a listener for the return key
+        mOutEditText = (EditText) findViewById(R.id.edit_text_out);
+        mOutEditText.setOnEditorActionListener(mWriteListener);
+
+        // Initialize the send button with a listener that for click events
+        mSendButton = (Button) findViewById(R.id.button_send);
+        mSendButton.setOnClickListener(new OnClickListener() {
+            public void onClick(View v) {
+                // Send a message using content of the edit text widget
+                TextView view = (TextView) findViewById(R.id.edit_text_out);
+                String message = view.getText().toString();
+                sendMessage(message);
+            }
+        });
+
+        // Initialize the BluetoothChatService to perform bluetooth connections
+        mChatService = new BluetoothChatService(this, mHandler);
+
+        // Initialize the buffer for outgoing messages
+        mOutStringBuffer = new StringBuffer("");
+    }
+
+    @Override
+    public synchronized void onPause() {
+        super.onPause();
+        if(D) Log.e(TAG, "- ON PAUSE -");
+    }
+
+    @Override
+    public void onStop() {
+        super.onStop();
+        if(D) Log.e(TAG, "-- ON STOP --");
+    }
+
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+        // Stop the Bluetooth chat services
+        if (mChatService != null) mChatService.stop();
+        if(D) Log.e(TAG, "--- ON DESTROY ---");
+    }
+
+    private void ensureDiscoverable() {
+        if(D) Log.d(TAG, "ensure discoverable");
+        if (mBluetoothAdapter.getScanMode() !=
+            BluetoothAdapter.SCAN_MODE_CONNECTABLE_DISCOVERABLE) {
+            Intent discoverableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
+            discoverableIntent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300);
+            startActivity(discoverableIntent);
+        }
+    }
+
+    /**
+     * Sends a message.
+     * @param message  A string of text to send.
+     */
+    private void sendMessage(String message) {
+        // Check that we're actually connected before trying anything
+        if (mChatService.getState() != BluetoothChatService.STATE_CONNECTED) {
+            Toast.makeText(this, R.string.not_connected, Toast.LENGTH_SHORT).show();
+            return;
+        }
+
+        // Check that there's actually something to send
+        if (message.length() > 0) {
+            // Get the message bytes and tell the BluetoothChatService to write
+            byte[] send = message.getBytes();
+            mChatService.write(send);
+
+            // Reset out string buffer to zero and clear the edit text field
+            mOutStringBuffer.setLength(0);
+            mOutEditText.setText(mOutStringBuffer);
+        }
+    }
+
+    // The action listener for the EditText widget, to listen for the return key
+    private TextView.OnEditorActionListener mWriteListener =
+        new TextView.OnEditorActionListener() {
+        public boolean onEditorAction(TextView view, int actionId, KeyEvent event) {
+            // If the action is a key-up event on the return key, send the message
+            if (actionId == EditorInfo.IME_NULL && event.getAction() == KeyEvent.ACTION_UP) {
+                String message = view.getText().toString();
+                sendMessage(message);
+            }
+            if(D) Log.i(TAG, "END onEditorAction");
+            return true;
+        }
+    };
+
+    // The Handler that gets information back from the BluetoothChatService
+    private final Handler mHandler = new Handler() {
+        @Override
+        public void handleMessage(Message msg) {
+            switch (msg.what) {
+            case MESSAGE_STATE_CHANGE:
+                if(D) Log.i(TAG, "MESSAGE_STATE_CHANGE: " + msg.arg1);
+                switch (msg.arg1) {
+                case BluetoothChatService.STATE_CONNECTED:
+                    mTitle.setText(R.string.title_connected_to);
+                    mTitle.append(mConnectedDeviceName);
+                    mConversationArrayAdapter.clear();
+                    break;
+                case BluetoothChatService.STATE_CONNECTING:
+                    mTitle.setText(R.string.title_connecting);
+                    break;
+                case BluetoothChatService.STATE_READY:
+                case BluetoothChatService.STATE_NONE:
+                    mTitle.setText(R.string.title_not_connected);
+                    break;
+                }
+                break;
+            case MESSAGE_WRITE:
+                byte[] writeBuf = (byte[]) msg.obj;
+                // construct a string from the buffer
+                String writeMessage = new String(writeBuf);
+                mConversationArrayAdapter.add("Me:  " + writeMessage);
+                break;
+            case MESSAGE_READ:
+                byte[] readBuf = (byte[]) msg.obj;
+                // construct a string from the valid bytes in the buffer
+                String readMessage = new String(readBuf, 0, msg.arg1);
+                mConversationArrayAdapter.add(mConnectedDeviceName+":  " + readMessage);
+                break;
+            case MESSAGE_DEVICE_NAME:
+                // save the connected device's name
+                mConnectedDeviceName = msg.getData().getString(DEVICE_NAME);
+                Toast.makeText(getApplicationContext(), "Connected to "
+                               + mConnectedDeviceName, Toast.LENGTH_SHORT).show();
+                break;
+            case MESSAGE_TOAST:
+                Toast.makeText(getApplicationContext(), msg.getData().getString(TOAST),
+                               Toast.LENGTH_SHORT).show();
+                break;
+            }
+        }
+    };
+
+    public void onActivityResult(int requestCode, int resultCode, Intent data) {
+        if(D) Log.d(TAG, "onActivityResult " + resultCode);
+        switch (requestCode) {
+        case REQUEST_CONNECT_DEVICE_SECURE:
+            // When DeviceListActivity returns with a device to connect
+            if (resultCode == Activity.RESULT_OK) {
+                connectDevice(data, true);
+            }
+            break;
+        case REQUEST_CONNECT_DEVICE_INSECURE:
+            // When DeviceListActivity returns with a device to connect
+            if (resultCode == Activity.RESULT_OK) {
+                connectDevice(data, false);
+            }
+            break;
+        case REQUEST_ENABLE_BT:
+            // When the request to enable Bluetooth returns
+            if (resultCode == Activity.RESULT_OK) {
+                // Bluetooth is now enabled, so set up a chat session
+                setupChat();
+            } else {
+                // User did not enable Bluetooth or an error occured
+                Log.d(TAG, "BT not enabled");
+                Toast.makeText(this, R.string.bt_not_enabled_leaving, Toast.LENGTH_SHORT).show();
+                finish();
+            }
+        }
+    }
+
+    private void connectDevice(Intent data, boolean secure) {
+        // Get the device MAC address
+        String address = data.getExtras()
+            .getString(DeviceListActivity.EXTRA_DEVICE_ADDRESS);
+        // Get the BLuetoothDevice object
+        BluetoothDevice device = mBluetoothAdapter.getRemoteDevice(address);
+        // Attempt to connect to the device
+        mChatService.connect(device, secure);
+    }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        MenuInflater inflater = getMenuInflater();
+        inflater.inflate(R.menu.option_menu, menu);
+        return true;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        Intent serverIntent = null;
+        switch (item.getItemId()) {
+        case R.id.secure_connect_scan:
+            // Launch the DeviceListActivity to see devices and do scan
+            serverIntent = new Intent(this, DeviceListActivity.class);
+            startActivityForResult(serverIntent, REQUEST_CONNECT_DEVICE_SECURE);
+            return true;
+        case R.id.insecure_connect_scan:
+            // Launch the DeviceListActivity to see devices and do scan
+            serverIntent = new Intent(this, DeviceListActivity.class);
+            startActivityForResult(serverIntent, REQUEST_CONNECT_DEVICE_INSECURE);
+            return true;
+        case R.id.discoverable:
+            // Ensure this device is discoverable by others
+            ensureDiscoverable();
+            return true;
+        }
+        return false;
+    }
+
+}
diff --git a/src/org/altusmetrum/AltosDroid/BluetoothChatService.java b/src/org/altusmetrum/AltosDroid/BluetoothChatService.java
new file mode 100644
index 0000000..93cb75d
--- /dev/null
+++ b/src/org/altusmetrum/AltosDroid/BluetoothChatService.java
@@ -0,0 +1,370 @@
+/*
+ * Copyright (C) 2009 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.altusmetrum.AltosDroid;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+//import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+import android.bluetooth.BluetoothAdapter;
+import android.bluetooth.BluetoothDevice;
+import android.bluetooth.BluetoothSocket;
+import android.content.Context;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.Message;
+import android.util.Log;
+
+/**
+ * This class does all the work for setting up and managing Bluetooth
+ * connections with other devices. It has a thread that listens for
+ * incoming connections, a thread for connecting with a device, and a
+ * thread for performing data transmissions when connected.
+ */
+public class BluetoothChatService {
+    // Debugging
+    private static final String TAG = "BluetoothChatService";
+    private static final boolean D = true;
+
+    // Member fields
+    private final BluetoothAdapter mAdapter;
+    private final Handler mHandler;
+    private ConnectThread mConnectThread;
+    private ConnectedThread mConnectedThread;
+    private int mState;
+
+    // Constants that indicate the current connection state
+    public static final int STATE_NONE = 0;       // we're doing nothing
+    public static final int STATE_READY = 1;
+    public static final int STATE_CONNECTING = 2; // now initiating an outgoing connection
+    public static final int STATE_CONNECTED = 3;  // now connected to a remote device
+
+    /**
+     * Constructor. Prepares a new BluetoothChat session.
+     * @param context  The UI Activity Context
+     * @param handler  A Handler to send messages back to the UI Activity
+     */
+    public BluetoothChatService(Context context, Handler handler) {
+        mAdapter = BluetoothAdapter.getDefaultAdapter();
+        mState = STATE_NONE;
+        mHandler = handler;
+    }
+
+    /**
+     * Set the current state of the chat connection
+     * @param state  An integer defining the current connection state
+     */
+    private synchronized void setState(int state) {
+        if (D) Log.d(TAG, "setState() " + mState + " -> " + state);
+        mState = state;
+
+        // Give the new state to the Handler so the UI Activity can update
+        mHandler.obtainMessage(AltosDroid.MESSAGE_STATE_CHANGE, state, -1).sendToTarget();
+    }
+
+    /**
+     * Return the current connection state. */
+    public synchronized int getState() {
+        return mState;
+    }
+
+    /**
+     * Start the chat service. Specifically start AcceptThread to begin a
+     * session in listening (server) mode. Called by the Activity onResume() */
+    public synchronized void start() {
+        if (D) Log.d(TAG, "start");
+
+        // Cancel any thread attempting to make a connection
+        if (mConnectThread != null) {mConnectThread.cancel(); mConnectThread = null;}
+
+        // Cancel any thread currently running a connection
+        if (mConnectedThread != null) {mConnectedThread.cancel(); mConnectedThread = null;}
+
+        setState(STATE_READY);
+
+    }
+
+    /**
+     * Start the ConnectThread to initiate a connection to a remote device.
+     * @param device  The BluetoothDevice to connect
+     * @param secure Socket Security type - Secure (true) , Insecure (false)
+     */
+    public synchronized void connect(BluetoothDevice device, boolean secure) {
+        if (D) Log.d(TAG, "connect to: " + device);
+
+        // Cancel any thread attempting to make a connection
+        if (mState == STATE_CONNECTING) {
+            if (mConnectThread != null) {mConnectThread.cancel(); mConnectThread = null;}
+        }
+
+        // Cancel any thread currently running a connection
+        if (mConnectedThread != null) {mConnectedThread.cancel(); mConnectedThread = null;}
+
+        // Start the thread to connect with the given device
+        mConnectThread = new ConnectThread(device, secure);
+        mConnectThread.start();
+        setState(STATE_CONNECTING);
+    }
+
+    /**
+     * Start the ConnectedThread to begin managing a Bluetooth connection
+     * @param socket  The BluetoothSocket on which the connection was made
+     * @param device  The BluetoothDevice that has been connected
+     */
+    public synchronized void connected(BluetoothSocket socket, BluetoothDevice
+            device, final String socketType) {
+        if (D) Log.d(TAG, "connected, Socket Type:" + socketType);
+
+        // Cancel the thread that completed the connection
+        if (mConnectThread != null) {mConnectThread.cancel(); mConnectThread = null;}
+
+        // Cancel any thread currently running a connection
+        if (mConnectedThread != null) {mConnectedThread.cancel(); mConnectedThread = null;}
+
+        // Start the thread to manage the connection and perform transmissions
+        mConnectedThread = new ConnectedThread(socket, socketType);
+        mConnectedThread.start();
+
+        // Send the name of the connected device back to the UI Activity
+        Message msg = mHandler.obtainMessage(AltosDroid.MESSAGE_DEVICE_NAME);
+        Bundle bundle = new Bundle();
+        bundle.putString(AltosDroid.DEVICE_NAME, device.getName());
+        msg.setData(bundle);
+        mHandler.sendMessage(msg);
+
+        setState(STATE_CONNECTED);
+    }
+
+    /**
+     * Stop all threads
+     */
+    public synchronized void stop() {
+        if (D) Log.d(TAG, "stop");
+
+        if (mConnectThread != null) {
+            mConnectThread.cancel();
+            mConnectThread = null;
+        }
+
+        if (mConnectedThread != null) {
+            mConnectedThread.cancel();
+            mConnectedThread = null;
+        }
+
+        setState(STATE_NONE);
+    }
+
+    /**
+     * Write to the ConnectedThread in an unsynchronized manner
+     * @param out The bytes to write
+     * @see ConnectedThread#write(byte[])
+     */
+    public void write(byte[] out) {
+        // Create temporary object
+        ConnectedThread r;
+        // Synchronize a copy of the ConnectedThread
+        synchronized (this) {
+            if (mState != STATE_CONNECTED) return;
+            r = mConnectedThread;
+        }
+        // Perform the write unsynchronized
+        r.write(out);
+    }
+
+    /**
+     * Indicate that the connection attempt failed and notify the UI Activity.
+     */
+    private void connectionFailed() {
+        // Send a failure message back to the Activity
+        Message msg = mHandler.obtainMessage(AltosDroid.MESSAGE_TOAST);
+        Bundle bundle = new Bundle();
+        bundle.putString(AltosDroid.TOAST, "Unable to connect device");
+        msg.setData(bundle);
+        mHandler.sendMessage(msg);
+
+        // Start the service over to restart listening mode
+        BluetoothChatService.this.start();
+    }
+
+    /**
+     * Indicate that the connection was lost and notify the UI Activity.
+     */
+    private void connectionLost() {
+        // Send a failure message back to the Activity
+        Message msg = mHandler.obtainMessage(AltosDroid.MESSAGE_TOAST);
+        Bundle bundle = new Bundle();
+        bundle.putString(AltosDroid.TOAST, "Device connection was lost");
+        msg.setData(bundle);
+        mHandler.sendMessage(msg);
+
+        // Start the service over to restart listening mode
+        BluetoothChatService.this.start();
+    }
+
+
+    /**
+     * This thread runs while attempting to make an outgoing connection
+     * with a device. It runs straight through; the connection either
+     * succeeds or fails.
+     */
+    private class ConnectThread extends Thread {
+        private final BluetoothSocket mmSocket;
+        private final BluetoothDevice mmDevice;
+        private String mSocketType;
+
+        public ConnectThread(BluetoothDevice device, boolean secure) {
+            mmDevice = device;
+            BluetoothSocket tmp = null;
+            mSocketType = secure ? "Secure" : "Insecure";
+
+            // Get a BluetoothSocket for a connection with the
+            // given BluetoothDevice
+            try {
+                if (secure) {
+                	Method m = device.getClass().getMethod("createRfcommSocket", new Class[] {int.class});
+                	tmp = (BluetoothSocket) m.invoke(device, 2);
+//                    tmp = device.createRfcommSocket(1);
+                } else {
+                	Method m = device.getClass().getMethod("createInsecureRfcommSocket", new Class[] {int.class});
+                	tmp = (BluetoothSocket) m.invoke(device, 2);
+//                    tmp = device.createInsecureRfcommSocket(1);
+                }
+            } catch (Exception e) {
+                Log.e(TAG, "Socket Type: " + mSocketType + "create() failed", e);
+				e.printStackTrace();
+			}
+            mmSocket = tmp;
+        }
+
+        public void run() {
+            Log.i(TAG, "BEGIN mConnectThread SocketType:" + mSocketType);
+            setName("ConnectThread" + mSocketType);
+
+            // Always cancel discovery because it will slow down a connection
+            mAdapter.cancelDiscovery();
+
+            // Make a connection to the BluetoothSocket
+            try {
+                // This is a blocking call and will only return on a
+                // successful connection or an exception
+                mmSocket.connect();
+            } catch (IOException e) {
+                // Close the socket
+                try {
+                    mmSocket.close();
+                } catch (IOException e2) {
+                    Log.e(TAG, "unable to close() " + mSocketType +
+                            " socket during connection failure", e2);
+                }
+                connectionFailed();
+                return;
+            }
+
+            // Reset the ConnectThread because we're done
+            synchronized (BluetoothChatService.this) {
+                mConnectThread = null;
+            }
+
+            // Start the connected thread
+            connected(mmSocket, mmDevice, mSocketType);
+        }
+
+        public void cancel() {
+            try {
+                mmSocket.close();
+            } catch (IOException e) {
+                Log.e(TAG, "close() of connect " + mSocketType + " socket failed", e);
+            }
+        }
+    }
+
+    /**
+     * This thread runs during a connection with a remote device.
+     * It handles all incoming and outgoing transmissions.
+     */
+    private class ConnectedThread extends Thread {
+        private final BluetoothSocket mmSocket;
+        private final InputStream mmInStream;
+        private final OutputStream mmOutStream;
+
+        public ConnectedThread(BluetoothSocket socket, String socketType) {
+            Log.d(TAG, "create ConnectedThread: " + socketType);
+            mmSocket = socket;
+            InputStream tmpIn = null;
+            OutputStream tmpOut = null;
+
+            // Get the BluetoothSocket input and output streams
+            try {
+                tmpIn = socket.getInputStream();
+                tmpOut = socket.getOutputStream();
+            } catch (IOException e) {
+                Log.e(TAG, "temp sockets not created", e);
+            }
+
+            mmInStream = tmpIn;
+            mmOutStream = tmpOut;
+        }
+
+        public void run() {
+            Log.i(TAG, "BEGIN mConnectedThread");
+            byte[] buffer = new byte[1024];
+            int bytes;
+
+            // Keep listening to the InputStream while connected
+            while (true) {
+                try {
+                    // Read from the InputStream
+                    bytes = mmInStream.read(buffer);
+
+                    // Send the obtained bytes to the UI Activity
+                    mHandler.obtainMessage(AltosDroid.MESSAGE_READ, bytes, -1, buffer)
+                            .sendToTarget();
+                } catch (IOException e) {
+                    Log.e(TAG, "disconnected", e);
+                    connectionLost();
+                    break;
+                }
+            }
+        }
+
+        /**
+         * Write to the connected OutStream.
+         * @param buffer  The bytes to write
+         */
+        public void write(byte[] buffer) {
+            try {
+                mmOutStream.write(buffer);
+
+                // Share the sent message back to the UI Activity
+                mHandler.obtainMessage(AltosDroid.MESSAGE_WRITE, -1, -1, buffer)
+                        .sendToTarget();
+            } catch (IOException e) {
+                Log.e(TAG, "Exception during write", e);
+            }
+        }
+
+        public void cancel() {
+            try {
+                mmSocket.close();
+            } catch (IOException e) {
+                Log.e(TAG, "close() of connect socket failed", e);
+            }
+        }
+    }
+}
diff --git a/src/org/altusmetrum/AltosDroid/DeviceListActivity.java b/src/org/altusmetrum/AltosDroid/DeviceListActivity.java
new file mode 100644
index 0000000..af5d7f1
--- /dev/null
+++ b/src/org/altusmetrum/AltosDroid/DeviceListActivity.java
@@ -0,0 +1,203 @@
+/*
+ * Copyright (C) 2009 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.altusmetrum.AltosDroid;
+
+import java.util.Set;
+import org.altusmetrum.AltosDroid.R;
+
+import android.app.Activity;
+import android.bluetooth.BluetoothAdapter;
+import android.bluetooth.BluetoothDevice;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.os.Bundle;
+import android.util.Log;
+import android.view.View;
+import android.view.Window;
+import android.view.View.OnClickListener;
+import android.widget.AdapterView;
+import android.widget.ArrayAdapter;
+import android.widget.Button;
+import android.widget.ListView;
+import android.widget.TextView;
+import android.widget.AdapterView.OnItemClickListener;
+
+/**
+ * This Activity appears as a dialog. It lists any paired devices and
+ * devices detected in the area after discovery. When a device is chosen
+ * by the user, the MAC address of the device is sent back to the parent
+ * Activity in the result Intent.
+ */
+public class DeviceListActivity extends Activity {
+    // Debugging
+    private static final String TAG = "DeviceListActivity";
+    private static final boolean D = true;
+
+    // Return Intent extra
+    public static String EXTRA_DEVICE_ADDRESS = "device_address";
+
+    // Member fields
+    private BluetoothAdapter mBtAdapter;
+    private ArrayAdapter<String> mPairedDevicesArrayAdapter;
+    private ArrayAdapter<String> mNewDevicesArrayAdapter;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        // Setup the window
+        requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
+        setContentView(R.layout.device_list);
+
+        // Set result CANCELED incase the user backs out
+        setResult(Activity.RESULT_CANCELED);
+
+        // Initialize the button to perform device discovery
+        Button scanButton = (Button) findViewById(R.id.button_scan);
+        scanButton.setOnClickListener(new OnClickListener() {
+            public void onClick(View v) {
+                doDiscovery();
+                v.setVisibility(View.GONE);
+            }
+        });
+
+        // Initialize array adapters. One for already paired devices and
+        // one for newly discovered devices
+        mPairedDevicesArrayAdapter = new ArrayAdapter<String>(this, R.layout.device_name);
+        mNewDevicesArrayAdapter = new ArrayAdapter<String>(this, R.layout.device_name);
+
+        // Find and set up the ListView for paired devices
+        ListView pairedListView = (ListView) findViewById(R.id.paired_devices);
+        pairedListView.setAdapter(mPairedDevicesArrayAdapter);
+        pairedListView.setOnItemClickListener(mDeviceClickListener);
+
+        // Find and set up the ListView for newly discovered devices
+        ListView newDevicesListView = (ListView) findViewById(R.id.new_devices);
+        newDevicesListView.setAdapter(mNewDevicesArrayAdapter);
+        newDevicesListView.setOnItemClickListener(mDeviceClickListener);
+
+        // Register for broadcasts when a device is discovered
+        IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
+        this.registerReceiver(mReceiver, filter);
+
+        // Register for broadcasts when discovery has finished
+        filter = new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
+        this.registerReceiver(mReceiver, filter);
+
+        // Get the local Bluetooth adapter
+        mBtAdapter = BluetoothAdapter.getDefaultAdapter();
+
+        // Get a set of currently paired devices
+        Set<BluetoothDevice> pairedDevices = mBtAdapter.getBondedDevices();
+
+        // If there are paired devices, add each one to the ArrayAdapter
+        if (pairedDevices.size() > 0) {
+            findViewById(R.id.title_paired_devices).setVisibility(View.VISIBLE);
+            for (BluetoothDevice device : pairedDevices) {
+                mPairedDevicesArrayAdapter.add(device.getName() + "\n" + device.getAddress());
+            }
+        } else {
+            String noDevices = getResources().getText(R.string.none_paired).toString();
+            mPairedDevicesArrayAdapter.add(noDevices);
+        }
+    }
+
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+
+        // Make sure we're not doing discovery anymore
+        if (mBtAdapter != null) {
+            mBtAdapter.cancelDiscovery();
+        }
+
+        // Unregister broadcast listeners
+        this.unregisterReceiver(mReceiver);
+    }
+
+    /**
+     * Start device discover with the BluetoothAdapter
+     */
+    private void doDiscovery() {
+        if (D) Log.d(TAG, "doDiscovery()");
+
+        // Indicate scanning in the title
+        setProgressBarIndeterminateVisibility(true);
+        setTitle(R.string.scanning);
+
+        // Turn on sub-title for new devices
+        findViewById(R.id.title_new_devices).setVisibility(View.VISIBLE);
+
+        // If we're already discovering, stop it
+        if (mBtAdapter.isDiscovering()) {
+            mBtAdapter.cancelDiscovery();
+        }
+
+        // Request discover from BluetoothAdapter
+        mBtAdapter.startDiscovery();
+    }
+
+    // The on-click listener for all devices in the ListViews
+    private OnItemClickListener mDeviceClickListener = new OnItemClickListener() {
+        public void onItemClick(AdapterView<?> av, View v, int arg2, long arg3) {
+            // Cancel discovery because it's costly and we're about to connect
+            mBtAdapter.cancelDiscovery();
+
+            // Get the device MAC address, which is the last 17 chars in the View
+            String info = ((TextView) v).getText().toString();
+            String address = info.substring(info.length() - 17);
+
+            // Create the result Intent and include the MAC address
+            Intent intent = new Intent();
+            intent.putExtra(EXTRA_DEVICE_ADDRESS, address);
+
+            // Set result and finish this Activity
+            setResult(Activity.RESULT_OK, intent);
+            finish();
+        }
+    };
+
+    // The BroadcastReceiver that listens for discovered devices and
+    // changes the title when discovery is finished
+    private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            String action = intent.getAction();
+
+            // When discovery finds a device
+            if (BluetoothDevice.ACTION_FOUND.equals(action)) {
+                // Get the BluetoothDevice object from the Intent
+                BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
+                // If it's already paired, skip it, because it's been listed already
+                if (device.getBondState() != BluetoothDevice.BOND_BONDED) {
+                    mNewDevicesArrayAdapter.add(device.getName() + "\n" + device.getAddress());
+                }
+            // When discovery is finished, change the Activity title
+            } else if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(action)) {
+                setProgressBarIndeterminateVisibility(false);
+                setTitle(R.string.select_device);
+                if (mNewDevicesArrayAdapter.getCount() == 0) {
+                    String noDevices = getResources().getText(R.string.none_found).toString();
+                    mNewDevicesArrayAdapter.add(noDevices);
+                }
+            }
+        }
+    };
+
+}