add support for media button for android 3.0 and later

AndroidManifest.xml

@@ -2,7 +2,7 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="me.guillaumin.android.osmtracker"
 	android:versionName="0.6.6" android:versionCode="30" android:installLocation="auto">
 
-    <uses-sdk android:minSdkVersion="7" android:targetSdkVersion="16"/>
+    <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="16"/>
 	<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"></uses-permission>
 	<uses-permission android:name="android.permission.RECORD_AUDIO"></uses-permission>
 	<uses-permission android:name="android.permission.INTERNET"></uses-permission>
@@ -45,6 +45,12 @@
 		    android:authorities="me.guillaumin.android.osmtracker.provider"
 		    android:exported="false" />
 
+		<receiver android:name=".receiver.MediaButtonReceiver" >
+	        <intent-filter android:priority="10000" >
+	            <action android:name="android.intent.action.MEDIA_BUTTON" />               
+	        </intent-filter>
+	    </receiver>  
+
 	</application>
 
 </manifest> 

src/me/guillaumin/android/osmtracker/activity/TrackLogger.java

@@ -1,7 +1,6 @@
 package me.guillaumin.android.osmtracker.activity;
 
 import java.io.File;
-import java.io.IOException;
 import java.util.Date;
 
 import me.guillaumin.android.osmtracker.OSMTracker;
@@ -11,6 +10,7 @@
 import me.guillaumin.android.osmtracker.layout.GpsStatusRecord;
 import me.guillaumin.android.osmtracker.layout.UserDefinedLayout;
 import me.guillaumin.android.osmtracker.listener.SensorListener;
+import me.guillaumin.android.osmtracker.receiver.MediaButtonReceiver;
 import me.guillaumin.android.osmtracker.service.gps.GPSLogger;
 import me.guillaumin.android.osmtracker.service.gps.GPSLoggerServiceConnection;
 import me.guillaumin.android.osmtracker.util.FileSystemUtils;
@@ -20,20 +20,23 @@
 import android.app.Activity;
 import android.app.AlertDialog;
 import android.app.Dialog;
+import android.content.ComponentName;
+import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.ServiceConnection;
 import android.content.SharedPreferences;
 import android.content.pm.ActivityInfo;
 import android.database.Cursor;
 import android.location.LocationManager;
+import android.media.AudioManager;
 import android.net.Uri;
 import android.os.Bundle;
 import android.os.Environment;
 import android.preference.PreferenceManager;
 import android.provider.MediaStore;
-import android.provider.Settings;
 import android.provider.MediaStore.Images.ImageColumns;
+import android.provider.Settings;
 import android.util.Log;
 import android.view.KeyEvent;
 import android.view.Menu;
@@ -137,6 +140,10 @@ public class TrackLogger extends Activity {
 	 * sensor listener for the azimuth display
 	 */
 	private SensorListener sensorListener;
+
+	private AudioManager mAudioManager;
+
+	private ComponentName mediaButtonReceiver;
 
 	@Override
 	protected void onCreate(Bundle savedInstanceState) {
@@ -172,6 +179,9 @@ protected void onCreate(Bundle savedInstanceState) {
 
 		// create sensor listener
 		sensorListener = new SensorListener();
+
+		mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
+		mediaButtonReceiver = new ComponentName(this, MediaButtonReceiver.class.getName());
 	}
 
 	@Override
@@ -247,6 +257,8 @@ protected void onResume() {
 			Toast.makeText(this, R.string.tracklogger_waiting_gps, Toast.LENGTH_LONG).show();
 		}
 
+		mAudioManager.registerMediaButtonEventReceiver(mediaButtonReceiver);
+
 		super.onResume();
 	}
 
@@ -293,6 +305,8 @@ protected void onPause() {
 			sensorListener.unregister();
 		}
 
+		mAudioManager.unregisterMediaButtonEventReceiver(mediaButtonReceiver);
+
 		super.onPause();
 	}
 
@@ -602,9 +616,14 @@ protected void onPrepareDialog(int id, Dialog dialog) {
 
 	@Override
 	protected void onNewIntent(Intent newIntent) {
-		if (newIntent.getExtras() != null && newIntent.getExtras().containsKey(Schema.COL_TRACK_ID)) {
-			currentTrackId = newIntent.getExtras().getLong(Schema.COL_TRACK_ID);
-			setIntent(newIntent);
+		if (newIntent.getExtras() != null) {
+			if (newIntent.getExtras().containsKey(Schema.COL_TRACK_ID)) {
+				currentTrackId = newIntent.getExtras().getLong(Schema.COL_TRACK_ID);
+				setIntent(newIntent);
+			}
+			if (newIntent.hasExtra("mediaButton") && gpsLogger != null && gpsLogger.isTracking()) {
+				this.showDialog(DIALOG_VOICE_RECORDING);
+			}
 		}
 		super.onNewIntent(newIntent);
 	}

src/me/guillaumin/android/osmtracker/receiver/MediaButtonReceiver.java

@@ -0,0 +1,18 @@
+package me.guillaumin.android.osmtracker.receiver;
+
+import me.guillaumin.android.osmtracker.activity.TrackLogger;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+
+public class MediaButtonReceiver extends BroadcastReceiver {
+
+	@Override
+	public void onReceive(Context context, Intent intent) {
+		Intent intent2 = new Intent(context, TrackLogger.class);
+		intent2.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+		intent2.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
+		context.startActivity(intent2.putExtra("mediaButton", Boolean.TRUE));
+	}
+
+}