altoslib: Add getBytes/putBytes interface to AltosPreferencesBackend

This lets us store arbitrary binary data in the preferences database

Signed-off-by: Keith Packard <keithp@keithp.com>

3 files changed, 27 insertions, 0 deletions

diff --git a/altosdroid/src/org/altusmetrum/AltosDroid/AltosDroidPreferencesBackend.java b/altosdroid/src/org/altusmetrum/AltosDroid/AltosDroidPreferencesBackend.java
index be41ae7c..09a2a7a2 100644
--- a/altosdroid/src/org/altusmetrum/AltosDroid/AltosDroidPreferencesBackend.java
+++ b/altosdroid/src/org/altusmetrum/AltosDroid/AltosDroidPreferencesBackend.java
@@ -22,6 +22,7 @@ import java.util.Map;
 import android.content.Context;
 import android.content.SharedPreferences;
 import android.os.Environment;
+import android.util.*;
 
 import org.altusmetrum.altoslib_5.*;
 
@@ -71,6 +72,16 @@ public class AltosDroidPreferencesBackend implements AltosPreferencesBackend {
 		return prefs.getString(key, def);
 	}
 
+	public byte[] getBytes(String key, byte[] def) {
+		String save = prefs.getString(key, null);
+
+		if (save == null)
+			return def;
+
+		byte[] bytes = Base64.decode(save, Base64.DEFAULT);
+		return bytes;
+	}
+
 	public void putBoolean(String key, boolean value) {
 		editor.putBoolean(key, value);
 	}
@@ -87,6 +98,11 @@ public class AltosDroidPreferencesBackend implements AltosPreferencesBackend {
 		editor.putString(key, value);
 	}
 
+	public void putBytes(String key, byte[] bytes) {
+		String save = Base64.encodeToString(bytes, Base64.DEFAULT);
+		editor.putString(key, save);
+	}
+
 	public void remove(String key) {
 		editor.remove(key);
 	}
diff --git a/altoslib/AltosPreferencesBackend.java b/altoslib/AltosPreferencesBackend.java
index 76a99acb..9bb4c99b 100644
--- a/altoslib/AltosPreferencesBackend.java
+++ b/altoslib/AltosPreferencesBackend.java
@@ -33,6 +33,9 @@ public interface AltosPreferencesBackend {
 	public boolean getBoolean(String key, boolean def);
 	public void    putBoolean(String key, boolean value);
 
+	public byte[]  getBytes(String key, byte[] def);
+	public void    putBytes(String key, byte[] value);
+
 	public boolean nodeExists(String key);
 	public AltosPreferencesBackend node(String key);
 
diff --git a/altosuilib/AltosUIPreferencesBackend.java b/altosuilib/AltosUIPreferencesBackend.java
index 4048fd83..8d4431f1 100644
--- a/altosuilib/AltosUIPreferencesBackend.java
+++ b/altosuilib/AltosUIPreferencesBackend.java
@@ -62,6 +62,14 @@ public class AltosUIPreferencesBackend implements AltosPreferencesBackend {
 		_preferences.putBoolean(key, value);
 	}
 
+	public byte[] getBytes(String key, byte[] def) {
+		return _preferences.getByteArray(key, def);
+	}
+
+	public void putBytes(String key, byte[] value) {
+		_preferences.putByteArray(key, value);
+	}
+
 	public boolean nodeExists(String key) {
 		try {
 			return _preferences.nodeExists(key);