Develop Reference

Play sound on widget click

Here's my code, it opens the main activity, but I can't seem to find a way to just make the widget play a sound.
I tried to:
add a button to the widget (didn't work)
add an OnClickListener to the main activity (which works but it opens the main activity and I just want the sound not the activity)
write a new method to play the sound with the MediaPlayer sound.start() method in it and calling it (didn't work)
I've looked in the android dev page and all I was able to find was how to use the MediaPlayer, but it says nothing about playing audio from a widget.
import android.app.PendingIntent;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProvider;
import android.content.Context;
import android.content.Intent;
import android.widget.RemoteViews;
public class ClockWidget extends AppWidgetProvider {
public static String ACTION_WIDGET_RECEIVER = "ActionReceiverWidget";
#Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
super.onUpdate(context, appWidgetManager, appWidgetIds);
final int N = appWidgetIds.length;
for (int i=0; i<N; i++) {
int appWidgetId = appWidgetIds[i];
Intent intent = new Intent(context, MainActivity.class);
intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent,PendingIntent.FLAG_UPDATE_CURRENT);
RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.clock_widget_layout);
views.setOnClickPendingIntent(R.id.AnalogClock0, pendingIntent);
appWidgetManager.updateAppWidget(appWidgetId, views);
}
}
}

To do it you need to use a service which you call like this
Intent svc=new Intent(this, BackgroundSoundService.class);
startService(svc);
public class BackgroundSoundService extends Service {
private static final String TAG = null;
MediaPlayer player;
public IBinder onBind(Intent arg0) {
return null;
}
#Override
public void onCreate() {
super.onCreate();
player = MediaPlayer.create(this, R.raw.trck);
//configure other settings
}
public int onStartCommand(Intent intent, int flags, int startId) {
player.start();
return 1;
}
public void onStart(Intent intent, int startId) {
// TO DO
}
public IBinder onUnBind(Intent arg0) {
// TO DO Auto-generated method
return null;
}
public void onStop() {
}
public void onPause() {
}
#Override
public void onDestroy() {
player.stop();
player.release();
}
}
Please register this service in Manifest.
<service android:enabled="true" android:name=".BackgroundSoundService" />
and you could do smth like this in widget
public class ClockWidget extends AppWidgetProvider {
private final String ACTION_WIDGET_PLAY = "PlaySong";
private final String ACTION_WIDGET_PAUSE = "PauseSong";
private final String ACTION_WIDGET_STOP = "StopSong";
private final int INTENT_FLAGS = 0;
private final int REQUEST_CODE = 0;
#Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager,
int[] appWidgetIds) {
RemoteViews controlButtons = new RemoteViews(context.getPackageName(),
R.layout.main);
Intent playIntent = new Intent(this, BackgroundSoundService.class);
Intent pauseIntent = new Intent(this, BackgroundSoundService.class);
Intent stopIntent = new Intent(this, BackgroundSoundService.class);
PendingIntent playPendingIntent = PendingIntent.getService(
this, REQUEST_CODE, playIntent, INTENT_FLAGS);
PendingIntent pausePendingIntent = PendingIntent.getService(
this, REQUEST_CODE, pauseIntent, INTENT_FLAGS);
PendingIntent stopPendingIntent = PendingIntent.getService(
this, REQUEST_CODE, stopIntent, INTENT_FLAGS);
controlButtons.setOnClickPendingIntent(
R.id.btnPlay, playPendingIntent);
controlButtons.setOnClickPendingIntent(
R.id.btnPause, pausePendingIntent);
controlButtons.setOnClickPendingIntent(
R.id.btnStop, stopPendingIntent);
appWidgetManager.updateAppWidget(appWidgetIds, controlButtons);
}
}

Widget calls Broadcast only one time

I have an app widget that sends a broadcast, then a broadcast receiver will start a service, the problem is when clicking the widget it would only work at the first time, then I have to open the app to stop the service.
this the widget code:
public class Widget extends AppWidgetProvider {
int appWidgetId;
RemoteViews views;
#Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
super.onUpdate(context, appWidgetManager, appWidgetIds);
for (int i = 0; i < appWidgetIds.length; i++) {
appWidgetId = appWidgetIds[i];
views = new RemoteViews(context.getPackageName(), R.layout.widget);
Intent bIntent = new Intent(context,BroadCast.class);
PendingIntent pIntent = PendingIntent.getBroadcast(context, 0, bIntent,0);
views.setOnClickPendingIntent(R.id.widgetbtn, pIntent);
appWidgetManager.updateAppWidget(appWidgetId, views);
}
}
}
The broadcast:
public class BroadCast extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
Intent serviceIntent=new Intent(context,Service.class);
if (!isServiceOn) {
context.startService(serviceIntent);
} else {
context.stopService(serviceIntent);
}
}
}
But it works fine when I send the broadcast from the main activity.

Start my application by clicking on widget

I'm trying How do I run an Activity from a button on a widget in Android? in order to launch my application on click on an image button. When i un-comment the code it switches the images but when i try to use this code it does nothing. I'd like to kick off my application instead.
public class MyWidgetIntentReceiver extends BroadcastReceiver {
private static int clickCount = 0;
#Override
public void onReceive(Context context, Intent intent) {
if(intent.getAction().equals("pl.looksok.intent.action.CHANGE_PICTURE")){
updateWidgetPictureAndButtonListener(context);
}
}
private void updateWidgetPictureAndButtonListener(Context context) {
Log.i("PROJECTCARUSO", "updateWidgetPictureAndButtonListener");
RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.widget);
// remoteViews.setImageViewResource(R.id.widget_button, getImageToSet());
//
// //REMEMBER TO ALWAYS REFRESH YOUR BUTTON CLICK LISTENERS!!!
// remoteViews.setOnClickPendingIntent(R.id.widget_button, MyWidgetProvider.buildButtonPendingIntent(context));
//
// MyWidgetProvider.pushWidgetUpdate(context.getApplicationContext(), remoteViews);
Intent intentClick = new Intent(context, FragmentChange.class);
PendingIntent pendingIntent = PendingIntent.getActivity (context, 0,
intentClick, 0);
remoteViews.setOnClickPendingIntent (R.id.widget_button, pendingIntent);
}
private int getImageToSet() {
clickCount++;
return clickCount % 2 == 0 ? R.drawable.app_icon : R.drawable.energy;
}
}

Here's what i finally got to work:
public class WidgetProvider extends AppWidgetProvider {
public static String SWITCH_WIDGET_UPDATE = "MainActivity.Switch";
#Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
Log.i("PROJECTCARUSO","onUpdate");
RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.widget);
remoteViews.setOnClickPendingIntent(R.id.widget_button, buildButtonPendingIntent(context));
Intent intentClick = new Intent(context, FragmentChange.class);
PendingIntent pendingIntent = PendingIntent.getActivity (context, 0, intentClick, 0);
remoteViews.setOnClickPendingIntent (R.id.widget_button, pendingIntent);
pushWidgetUpdate(context, remoteViews);
}
public static PendingIntent buildButtonPendingIntent(Context context) {
Intent intent = new Intent();
intent.setAction("CHANGE_PICTURE");
return PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
}
public static void pushWidgetUpdate(Context context, RemoteViews remoteViews) {
ComponentName myWidget = new ComponentName(context, WidgetProvider.class);
AppWidgetManager manager = AppWidgetManager.getInstance(context);
manager.updateAppWidget(myWidget, remoteViews);
}
#Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
super.onReceive(context, intent);
}
}

Why is AlarmManager not updating my widget?

I have a widget that is simply a textview, that I am attempting to update every second using an AlarmManager. The Log.d("test", "hello1") shows up in my LogCat when I run the app, but the Log.d("test", "service") does not show up, so it appears the program is not even reaching my MyService class.
I would greatly appreciate any help.
Thank you.
Here is my AppWidgetProvider class:
public class NetworkSpeedWidget extends AppWidgetProvider {
private PendingIntent service = null;
#Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager,
int[] appWidgetIds) {
Log.d("test", "hello");
super.onUpdate(context, appWidgetManager, appWidgetIds);
final AlarmManager m = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
final Intent i = new Intent(context, MyService.class);
if (service == null)
{
service = PendingIntent.getService(context, 0, i, PendingIntent.FLAG_CANCEL_CURRENT);
}
Log.d("test", "hello1");
m.setRepeating(AlarmManager.RTC, System.currentTimeMillis(),1000,service);
}
}
Here is my MyService class:
public class MyService extends Service{
#Override
public void onCreate()
{
Log.d("test", "service");
super.onCreate();
}
#Override
public int onStartCommand(Intent intent, int flags, int startId)
{
buildUpdate();
return super.onStartCommand(intent, flags, startId);
}
private void buildUpdate()
{
MainActivity object = new MainActivity();
String objectString = object.getMegaBitsPerSecondString();
AppWidgetManager manager = AppWidgetManager.getInstance(this);
ComponentName thisWidget = new ComponentName(this, NetworkSpeedWidget.class);
int[]ids = manager.getAppWidgetIds(thisWidget);
final int N = ids.length;
for (int i = 0; i < N; i++){
int awID = ids[i];
RemoteViews v = new RemoteViews(getPackageName(), R.layout.widget);
v.setTextViewText(R.id.widgetTextView,objectString);
manager.updateAppWidget(awID, v);
}
}
#Override
public IBinder onBind(Intent intent)
{
return null;
}
}

All my code is correct, I just needed to declare it in my Manifest.
I simply added the following line:
<service android:enabled="true" android:name=".MyService" />
Thank you jul for your help.

Android OnClickPendingIntent ( widget -> service ) firing by itself

I've ran into a pretty interesting problem - I have a widget that when pressed, would fire a OnClickPendingIntent to invoke a service that would play a sound. But from time to time, about one an hour, it would fire by itself.
widget:
public class WidgetActivity extends AppWidgetProvider {
#Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager,
int[] appWidgetIds) {
RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.widget_layout);
Intent intent = new Intent(context.getApplicationContext(), SilentService.class);
intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, appWidgetIds);
PendingIntent pendingIntent = PendingIntent.getService(
context.getApplicationContext(), 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
remoteViews.setOnClickPendingIntent(R.id.layout, pendingIntent);
appWidgetManager.updateAppWidget(appWidgetIds, remoteViews);
context.startService(intent);
}
}
service:
public class SilentService extends Service {
#Override
public void onStart(Intent intent, int startId) {
Log.e("UpdateWidgetService", "Called");
final AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(this.getApplicationContext());
int[] appWidgetIds = intent.getIntArrayExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS);
if (appWidgetIds.length > 0) {
for (final int widgetId : appWidgetIds) {
final RemoteViews remoteViews = new RemoteViews(getPackageName(), R.layout.widget_layout);
remoteViews.setImageViewResource(R.id.ivc, R.drawable.pic1);
appWidgetManager.updateAppWidget(widgetId, remoteViews);
MediaPlayer mpl = MediaPlayer.create(this, R.raw.music1);
int intRand = random.nextInt(5)+1;
Log.e("r",String.valueOf(intRand));
mpl.start();
mpl.setOnCompletionListener(new OnCompletionListener() {
public void onCompletion(MediaPlayer mp) {
remoteViews.setImageViewResource(R.id.ivc, R.drawable.pic2);
appWidgetManager.updateAppWidget(widgetId, remoteViews);
}
});
}
stopSelf();
}
super.onStart(intent, startId);
}
#Override
public IBinder onBind(Intent intent) {
return null;
}
}
Thanks!

I have a feeling Android is killing your service and then your code is trying to start it again. I have seen similar issues. Give this a read: http://developer.android.com/guide/topics/fundamentals.html#proclife
When your service restarts after Android tries to get memory back, it is trying to start the service, which creates a new media player, and starts it back up. This is my assumption without knowing exactly how the code is setup, but based on what I see it's most likely the issue.