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.
Related
Here i have made one widget and added its click listener where i'm starting one service.It works perfectly.But once user force stops application from appinfo my widget's click is not responding.I m not getting why this is happening.Help on this will be appreciated.Thank you
My app widget class code:
MyWidget.java:
public class MyWidget extends AppWidgetProvider {
static Context cont;
static SharedPreferences preferences;
static void updateAppWidget(Context context, AppWidgetManager appWidgetManager,
int appWidgetId) {
cont = context;
Intent intent2 = new Intent();
intent2.setAction("....");
PendingIntent pendingIntent = PendingIntent.
getBroadcast(context, 0,
intent2, PendingIntent.FLAG_UPDATE_CURRENT);
RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.my_widget);
views.setOnClickPendingIntent(R.id.appwidget_text, pendingIntent);
appWidgetManager.updateAppWidget(appWidgetId, views);
}
#Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
// There may be multiple widgets active, so update all of them
for (int appWidgetId : appWidgetIds) {
updateAppWidget(context, appWidgetManager, appWidgetId);
}
}
#Override
public void onReceive(Context context, Intent intent) {
super.onReceive(context, intent);
context.startService(new Intent(context, MyService.class));
}
#Override
public void onEnabled(Context context) {
.................. }
#Override
public void onDisabled(Context context) {
.................}
Always use an explicit Intent whenever possible. Your code would not work on Android 8.0 and higher, where implicit broadcasts are banned. And an explicit Intent can move your app out of the stopped state.
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.
How can we updating the View of a Home Screen Widget on the onReceive method of AppWidgetProvider?.I am trying to update the listview of my Home screen widget but it seems that I cant access the listview of my AppWidgetProvider on onReceive method.My problem is when i changes in my application and come back to the home screen that the widget has no modification.Here is a sample code of my onReceive
public class WidgetTaskSchedular extends AppWidgetProvider {
private final String TAG = "CalendarViewSample:"
+ this.getClass().getName();
static int ID;
int[] sameid=new int[1];
#Override
public void onReceive(Context context, Intent intent) {
super.onReceive(context, intent);
if(intent.getAction().equals("update_widget"))
{
Log.i(TAG,"AppWidgetIds:"+ID);
for(int i=0;i<1;i++)
{
sameid[i]=ID;
Log.i(TAG,"SameId:"+sameid[i]);
onUpdate(context, AppWidgetManager.getInstance(context),sameid);
}
}
}
public static String EXTRA_WORD=
"com.capsone.testing.calendar.WORD";
#SuppressWarnings("deprecation")
#Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager,
int[] appWidgetIds) {
super.onUpdate(context, appWidgetManager, appWidgetIds);
for (int i=0; i<appWidgetIds.length; i++) {
ID=appWidgetIds[i];
Log.i(TAG,"LengthofWidget:"+appWidgetIds.length);
Log.i(TAG,"TestAppWidget:"+appWidgetIds[i]);
Intent intentWidgetService=new Intent(context, WidgetService.class);
intentWidgetService.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetIds[i]);
intentWidgetService.setData(Uri.parse(intentWidgetService.toUri(Intent.URI_INTENT_SCHEME)));
RemoteViews remoteView=new RemoteViews(context.getPackageName(),
R.layout.widgetlayout);
remoteView.setRemoteAdapter(appWidgetIds[i], R.id.listWidget,
intentWidgetService);
Intent clickIntent=new Intent(context, ActionBarActivity.class);
PendingIntent clickPendingIntent=PendingIntent
.getActivity(context, 0,
clickIntent,
PendingIntent.FLAG_UPDATE_CURRENT);
remoteView.setPendingIntentTemplate(R.id.listWidget, clickPendingIntent);
ComponentName component=new ComponentName(context,WidgetTaskSchedular.class);
appWidgetManager.updateAppWidget(component, remoteView);
}
}
}
MainActivity class:
In this main class i change some modification and broadcast this to widget class using on pause method:
#Override
public void onPause() {
super.onPause();
Intent updateWidget = new Intent(getActivity(), WidgetTaskSchedular.class);
updateWidget.setAction("update_widget");
PendingIntent pending = PendingIntent.getBroadcast(getActivity(), 0, updateWidget, PendingIntent.FLAG_CANCEL_CURRENT);
try {
pending.send();
} catch (CanceledException e) {
e.printStackTrace();
}
}
So, I've got a widget, I want it to update every 60 seconds. When the widget is first added to the homescreen, it runs its update function just fine. Beyond that it's supposed to start an AlarmManager, which will rerun the update method every 60 seconds. That's the part that it doesn't seem to be actually doing. Here's my code:
public class ClockWidget extends AppWidgetProvider {
public static String CLOCK_WIDGET_UPDATE = "com.nickavv.cleanwidget.CLEANCLOCK_UPDATE";
#Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int appWidgetIds[]) {
final int N = appWidgetIds.length;
for (int i = 0; i < N; i++) {
int appWidgetId = appWidgetIds[i];
RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.clocklayout);
appWidgetManager.updateAppWidget(appWidgetId, views);
updateAppWidget(context, appWidgetManager, appWidgetId);
}
}
public static void updateAppWidget(Context context, AppWidgetManager appWidgetManager, int appWidgetId) {
Log.d("log","Entered update cycle");
//Unimportant for these purposes
appWidgetManager.updateAppWidget(appWidgetId, views);
}
private PendingIntent createClockTickIntent(Context context) {
Intent intent = new Intent(CLOCK_WIDGET_UPDATE);
PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0,
intent, PendingIntent.FLAG_UPDATE_CURRENT);
return pendingIntent;
}
#Override
public void onEnabled(Context context) {
super.onEnabled(context);
Log.d("onEnabled","Widget Provider enabled. Starting timer to update widget every minute");
AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
alarmManager.setRepeating(AlarmManager.RTC, System.currentTimeMillis(), 60000, createClockTickIntent(context));
}
#Override
public void onDisabled(Context context) {
super.onDisabled(context);
Log.d("onDisabled", "Widget Provider disabled. Turning off timer");
AlarmManager alarmManager = (AlarmManager) context
.getSystemService(Context.ALARM_SERVICE);
alarmManager.cancel(createClockTickIntent(context));
}
#Override
public void onReceive(Context context, Intent intent) {
super.onReceive(context, intent);
Log.d("onReceive", "Received intent " + intent);
if (CLOCK_WIDGET_UPDATE.equals(intent.getAction())) {
Log.d("onReceive", "Clock update");
// Get the widget manager and ids for this widget provider, then
// call the shared
// clock update method.
ComponentName thisAppWidget = new ComponentName(context.getPackageName(), getClass().getName());
AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
int ids[] = appWidgetManager.getAppWidgetIds(thisAppWidget);
for (int appWidgetID: ids) {
updateAppWidget(context, appWidgetManager, appWidgetID);
}
}
}
}
It's the product of a few tutorials I've found on the matter, and my own knowledge of Android. According to my logcats, it never gets to the Log.d("onReceive", "Clock update"); line. And yes, my Manifest is set up with the clock update intent. Thanks!
EDIT: Additional info. I put a log line in the createClockTickIntent method, and it fires off. So I guess this means that my application is running the alarmManager.setRepeating line, no idea why is isn't actually repeating.
Arggghhh, it was a simple typo. The intent filter was "com.nickavv.cleanwidgets.CLEANCLOCK_UPDATE", and I had written "com.nickavv.cleanwidget.CLEANCLOCK_UPDATE"
What a pain, but hey, now I know.
So, moral of the story for anybody with a similar problem to me: Check your spelling! Check it twice, or ten times. On everything!
You have to make an appwidget-provider and set updatePeriodMillis on 0.6 second , then it will be update per 60 seconds.
<?xml version="1.0" encoding="utf-8" ?>
<appwidget-provider
xmlns:android="http://schemas.android.com/apk/res/android"
android:minWidth="146dp"
android:initialLayout="#layout/YourLayout"
android:updatePeriodMillis="0.6"
android:minHeight="144dp"/>
Hello I'm trying to add buttons to my Appwidget, but even after reading many codes, my buttons aren't working.
This is my AppWidgetProvider:
public class MyWidget extends AppWidgetProvider {
public void onUpdate(Context context, AppWidgetManager appWidgetManager,
int[] appWidgetIds) {
Intent intent = new Intent(context, MyService.class);
intent.setAction("0");
intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, appWidgetIds);
PendingIntent pendingIntent = PendingIntent.getService(context, 0, intent, 0);
RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.widgetlayout);
views.setOnClickPendingIntent(R.id.button_widget, pendingIntent);
appWidgetManager.updateAppWidget(appWidgetIds, views);
}
}
And here is MyService:
public class MyService extends Service {
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
String command = intent.getAction();
int[] appWidgetIds = intent
.getIntArrayExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS);
RemoteViews remoteView = new RemoteViews(getApplicationContext()
.getPackageName(), R.layout.widgetlayout);
AppWidgetManager appWidgetManager = AppWidgetManager
.getInstance(getApplicationContext());
if (command.equals("0")) {
remoteViews.setTextViewText(R.id.button_widget, "TextChanged");
}
RemoteViews remoteViews = new RemoteViews(getPackageName(),
R.layout.widgetlayout);
appWidgetManager.updateAppWidget(appWidgetIds, remoteView);
super.onStart(intent, startId);
return 0;
}
#Override
public IBinder onBind(Intent arg0) {
return null;
}
}
This is just a dummy code that is supposed to changed a button's text when you click it. It doesn't.
Any ideas about what I'm doing wrong?
Thanks.
i just take a look in your source code, it seem problem belong logic,
your re-create new RemoteView object after your change text content:
Solution: Comment out following line of code:
/* 22/07/2011 DELETE START */
//RemoteViews remoteViews = new RemoteViews(getPackageName(),
// R.layout.widgetlayout);
/* 22/07/2011 DELETE END */
In class MyService:
public class MyService extends Service {
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
String command = intent.getAction();
int[] appWidgetIds = intent
.getIntArrayExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS);
RemoteViews remoteView = new RemoteViews(getApplicationContext()
.getPackageName(), R.layout.widgetlayout);
AppWidgetManager appWidgetManager = AppWidgetManager
.getInstance(getApplicationContext());
if (command.equals("0")) {
remoteViews.setTextViewText(R.id.button_widget, "TextChanged");
}
/* 22/07/2011 DELETE START */
//RemoteViews remoteViews = new RemoteViews(getPackageName(),
// R.layout.widgetlayout);
/* 22/07/2011 DELETE END */
appWidgetManager.updateAppWidget(appWidgetIds, remoteView);
super.onStart(intent, startId);
return 0;
}
#Override
public IBinder onBind(Intent arg0) {
return null;
}
}
Try to put your code from onStartCommand into
public void onStart(Intent intent, int startId)
as you might run your code on older Android platforms that only use onStart.