altosdroid: simplify keys() method

Signed-off-by: Mike Beattie <mike@ethernal.org>

1 files changed, 2 insertions, 4 deletions

diff --git a/altosdroid/src/org/altusmetrum/AltosDroid/AltosDroidPreferences.java b/altosdroid/src/org/altusmetrum/AltosDroid/AltosDroidPreferences.java
index 7ba328f4..28ecc182 100644
--- a/altosdroid/src/org/altusmetrum/AltosDroid/AltosDroidPreferences.java
+++ b/altosdroid/src/org/altusmetrum/AltosDroid/AltosDroidPreferences.java
@@ -47,10 +47,8 @@ public class AltosDroidPreferences implements AltosPreferencesBackend {
 	}
 
 	public String[] keys() {
-		Map<String, ?> data = prefs.getAll();
-		String[] keys = new String[data.size()];
-		data.keySet().toArray(keys);
-		return keys;
+		Map<String, ?> all = prefs.getAll();
+		return (String[])all.keySet().toArray();
 	}
 
 	public boolean nodeExists(String key) {