The below code should describe an app where once the widget button is clicked, it sends off an intent that should be received by TestReceiver. However, in running my below code, the onReceive of TestReceiver is never called.
Could someone let me know what I'm doing wrong?
Widget code
public class Widget extends AppWidgetProvider {
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
final int N = appWidgetIds.length;
// Perform this loop procedure for each App Widget that belongs to this provider
for (int i=0; i<N; i++) {
int appWidgetId = appWidgetIds[i];
// Create an Intent to launch ExampleActivity
//Intent intent = new Intent(context.getApplicationContext(), TestReceiver.class);
Intent intent = new Intent();
intent.setAction(TestReceiver.TEST_INTENT);
intent.setClassName(TestReceiver.class.getPackage().getName(), TestReceiver.class.getName());
PendingIntent pendingIntent = PendingIntent.getBroadcast(context.getApplicationContext(), 0, intent, PendingIntent.FLAG_CANCEL_CURRENT);
// Get the layout for the App Widget and attach an on-click listener to the button
RemoteViews views;
views = new RemoteViews(context.getPackageName(), R.layout.main);
views.setOnClickPendingIntent(R.id.btnTest, pendingIntent);
// Tell the AppWidgetManager to perform an update on the current App Widget
appWidgetManager.updateAppWidget(appWidgetId, views);
}
}
}
Receiver Code:
public class TestReceiver extends BroadcastReceiver {
public static final String TEST_INTENT= "MyTestIntent";
#Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
Toast.makeText(context, "Test", Toast.LENGTH_SHORT);
if(intent.getAction()==TEST_INTENT)
{
System.out.println("GOT THE INTENT");
Toast.makeText(context, "Test", Toast.LENGTH_SHORT);
}
}
}
Manifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.test.intenttest"
android:versionCode="1"
android:versionName="1.0">
<application android:icon="#drawable/icon" android:label="#string/app_name">
<receiver android:name=".TestReceiver" android:label="#string/app_name">
<intent-filter>
<action android:name="MyTestIntent">
</action>
</intent-filter>
</receiver>
<receiver android:label="#string/app_name" android:name="Widget">
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
</intent-filter>
<meta-data android:name="android.appwidget.provider" android:resource="#xml/widget" />
</receiver>
</application>
<uses-sdk android:minSdkVersion="3" />
</manifest>
It probably works, but you forgot to add .show() at the end of your Toast :)
== tests for reference equality (whether they are the same object).
.equals() tests for value equality (whether they are logically "equal").
String values are compared using '==' not 'equals'
This "if(intent.getAction()==TEST_INTENT)" change this "if(intent.getAction().equals(TEST_INTENT))"
and of course Toast.makeText(context, "Test", Toast.LENGTH_SHORT).show();
All code:
package *********;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.widget.Toast;
public class TestReceiver extends BroadcastReceiver {
public static final String TEST_INTENT= "MyTestIntent";
#Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
Toast.makeText(context, "Test holaaa", Toast.LENGTH_SHORT).show();
if(intent.getAction() == TEST_INTENT)
// if(intent.getAction().equals(TEST_INTENT))
{
System.out.println("GOT THE INTENT");
Toast.makeText(context, "Test Goooo", Toast.LENGTH_SHORT).show();
}
}
}
Related
My widget app is running fine on all android version except 8 Oreo.
I get a W/BroadcastQueue: Background execution not allowed: receiving Intent message.
There is an interesting blog from CommonsWare but I don't fully understand why it applies to my case.
https://commonsware.com/blog/2017/04/11/android-o-implicit-broadcast-ban.html
My case looks pretty simple: I have a widget with a button and I want to change the text's button when it is clicked.
What is the right way to fix this issue?
TestWidget.java
public class TestWidget extends AppWidgetProvider {
private static RemoteViews views;
private static boolean buttonClicked = false;
public static final String ACTION_AUTO_UPDATE = "AUTO_UPDATE";
#Override
public void onReceive(Context context, Intent intent)
{
super.onReceive(context, intent);
if(intent.getAction().equals(ACTION_AUTO_UPDATE))
{
Log.i("TESTWID", "get onReceive");
}
}
static void updateAppWidget(Context context, AppWidgetManager appWidgetManager,
int appWidgetId) {
views = new RemoteViews(context.getPackageName(), R.layout.test_widget);
views.setOnClickPendingIntent(R.id.wid_btn_tst, setButton(context));
appWidgetManager.updateAppWidget(appWidgetId, views);
}
#Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
Log.i("TESTWID", "onupdate ");
for (int appWidgetId : appWidgetIds) {
updateAppWidget(context, appWidgetManager, appWidgetId);
}
}
public static PendingIntent setButton(Context context) {
Intent intent = new Intent();
intent.setAction("TEST");
return PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
}
public static void pushWidgetUpdate(Context context, RemoteViews remoteViews) {
ComponentName myWidget = new ComponentName(context, TestWidget.class);
AppWidgetManager manager = AppWidgetManager.getInstance(context);
manager.updateAppWidget(myWidget, remoteViews);
}
}
TestWidgetReceiver.java
public class TestWidgetReceiver extends BroadcastReceiver{
private static boolean isButtonON = false;
#Override
public void onReceive(Context context, Intent intent) {
Log.i("TESTWID", "onReceive "+intent.getAction());
if(intent.getAction().equals("TEST")){
updateWidgetButton(context, 2);
}
}
private void updateWidgetButton(Context context, int index) {
RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.test_widget);
if(index == 2) {
if(isButtonON) {
remoteViews.setTextViewText(R.id.wid_btn_tst, "Test Off");
isButtonON = false;
}
else{
remoteViews.setTextViewText(R.id.wid_btn_tst, "Test On");
isButtonON = true;
}
}
TestWidget.pushWidgetUpdate(context.getApplicationContext(), remoteViews);
}
}
Manifest.xml:
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="Test"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name=".TestWidget">
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
</intent-filter>
<intent-filter>
<action android:name="AUTO_UPDATE" />
</intent-filter>
<meta-data
android:name="android.appwidget.provider"
android:resource="#xml/test_widget_info" />
</receiver>
<receiver
android:name=".TestWidgetReceiver"
android:label="widgetBroadcastReceiver" >
<intent-filter>
<action android:name="TEST" />
</intent-filter>
<meta-data
android:name="android.appwidget.provider"
android:resource="#xml/test_widget_info" />
</receiver>
</application>
It's subtle, but it is because of the implicit broadcast being used to trigger your TestWidgetReceiver. It is implicit because it is only specifying the action portion of the Intent. Make the broadcast Intent explicit by specifying the receiver class in the constructor:
public static PendingIntent setButton(Context context) {
Intent intent = new Intent(context, TestWidgetReceiver.class);
intent.setAction("TEST");
return PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
}
Things are changed now a days in Android. For the security & battery consumption google introduced so many ways & increased some problem for developers.
You haven't passed the Context of the TestWidgetReceiver.class to you intent.
You can do it like that in java
Intent intent = new Intent(context, TestWidgetReceiver.class);
or in kotlin
val intent = Intent(context, TestWidgetReceiver.class);
You can read more changes here
https://developer.android.com/about/versions/oreo/android-8.0-changes
Regards
I'm trying to follow this example:
What is the correct way for sharing data among AppWidgetProvider and RemoteViewsService.RemoteViewsFactory
As such, I have a RemoteViewsFactory that has this:
#Override
public void onDataSetChanged() {
// Subsequent calls to get the data.
newsGetter.updateListFeed(null, new NewsGetter.OnUpdateListFeedFinishedListener() {
#Override
public void onUpdateListFeedFinished(VolleyError error) {
//async return here from volley
Intent widgetUpdateIntent = new Intent(NewsWidgetBase.FEED_UPDATED);
widgetUpdateIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
LocalBroadcastManager.getInstance(context).sendBroadcast(widgetUpdateIntent);
}
});
Log.e(TAG, "******************************** onDataSetChanged PROVIDER");
}
Then I have an AppWidgetProvider that has this:
#Override
public void onReceive(Context context, Intent intent) {
final String action = intent.getAction();
if (AppWidgetManager.ACTION_APPWIDGET_UPDATE.equals(action)) {
Log.e("WidgetBase", "******************************** onReceive ACTION_APPWIDGET_UPDATE");
} else if (FEED_UPDATED.equals(action)) {
Log.e("WidgetBase", "******************************** onReceive FEED_UPDATED");
AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
int appWidgetId = intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID,
AppWidgetManager.INVALID_APPWIDGET_ID);
updateAppWidget(context, appWidgetManager, appWidgetId);
}
super.onReceive(context, intent);
}
And in the manifest:
<receiver android:name=".widgets.a">
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
<action android:name="com.myapp.FEED_UPDATED" />
</intent-filter>
<meta-data
android:name="android.appwidget.provider"
android:resource="#xml/abc" />
</receiver>
I get the debugger log for ACTION_APPWIDGET_UPDATE, but for my own Intent broadcast, it never fires onReceive (breakpoint is never even hit). Does anyone see what I'm doing wrong?
For your own Intent broadcast to work, you have to register your BroadcastReceiver programmatically. So register your receiver as
LocalBroadcastManager.getInstance(this).registerReceiver(YourWidgetReceiver, new IntentFilter("your_intent_action"));
And then send your broadcast as
Intent intent = new Intent("your_intent_action");
LocalBroadcastManager.getInstance(getApplicationContext()).sendBroadcast(intent)
;
Hope this helps.
I am trying to use BroadcastReceiver but it is not working, please help me to solve this problem.
MyReceiver.java
package com.example.broadcast_receiver;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;
public class MyReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
Log.i("[BroadcastReceiver]", "MyReceiver");
if(intent.getAction().equals(Intent.ACTION_SCREEN_ON)){
Log.i("[BroadcastReceiver]", "Screen ON");
}
else if(intent.getAction().equals(Intent.ACTION_SCREEN_OFF)){
Log.i("[BroadcastReceiver]", "Screen OFF");
}
}
}
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.broadcast_receiver"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="9"
android:targetSdkVersion="16" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<receiver android:name=".MyReceiver"
android:enabled="true"
android:exported="false">
<intent-filter>
<action android:name="android.intent.action.SCREEN_ON"/>
<action android:name="android.intent.action.SCREEN_OFF"/>
</intent-filter>
</receiver>
<activity
android:name="com.example.broadcast_receiver.MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
BroadcastReceiver not working and not making any log, please help me to solve this problem.
Hey try using dynamic calling of broadcast,I tried this it will surly work...
public class MainActivity extends Activity {
//Create broadcast object
BroadcastReceiver mybroadcast = new BroadcastReceiver() {
//When Event is published, onReceive method is called
#Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
Log.i("[BroadcastReceiver]", "MyReceiver");
if (intent.getAction().equals(Intent.ACTION_SCREEN_ON)) {
Log.i("[BroadcastReceiver]", "Screen ON");
}
else if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) {
Log.i("[BroadcastReceiver]", "Screen OFF");
}
}
};
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
registerReceiver(mybroadcast, new IntentFilter(Intent.ACTION_SCREEN_ON));
registerReceiver(mybroadcast, new IntentFilter(Intent.ACTION_SCREEN_OFF));
}
}
If you want this receiver to be called by the system, you would need to export it. You set exported = "false", change this to true or remove exported entirely and this will start working. Normally this would be insecure, but as both SCREEN_ON and SCREEN_OFF are protected-broadcasts, and you verify the actions, only more trusted system code can send them too you, so it's pretty safe.
Sadly this wont work in this case as the intents broadcast have the following flags:
Intent.FLAG_RECEIVER_REGISTERED_ONLY | Intent.FLAG_RECEIVER_FOREGROUND
Can you try with getting battery value:
public class Broadcast extends Activity {
//Create broadcast object
BroadcastReceiver mybroadcast = new BroadcastReceiver() {
//When Event is published, onReceive method is called
#Override
public void onReceive(Context context, Intent intent) {
//Get battery percentage
int batterylevel = intent.getIntExtra("level", 0);
//get progressbar
ProgressBar myprogressbar = (ProgressBar) findViewById(R.id.progressbar);
myprogressbar.setProgress(batterylevel);
TextView tv = (TextView) findViewById(R.id.textfield);
//Set TextView with text
tv.setText("Battery Level: " + Integer.toString(batterylevel) + "%");
}
});
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_broadcast);
registerReceiver(mybroadcast, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
}
}
I need to make a widget which, once clicked, would start a service. Service would perform a certain action, change the widgets picture, play a sound, etc., and stop.
AppWidgetProvider:
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.LinLayWiget, pendingIntent);
appWidgetManager.updateAppWidget(appWidgetIds, remoteViews);
context.startService(intent);
}
}
service:
public class SilentService extends Service {
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public void onCreate() {
Toast.makeText(this, "I'm Alive!", 1500).show();
MediaPlayer mpl = MediaPlayer.create(this, R.raw.enter );
mpl.start();
}
#Override
public void onDestroy() {
//code to execute when the service is shutting down
}
#Override
public void onStart(Intent intent, int startid) {
//code to execute when the service is starting up
}
}
manifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="FX.Widget"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="8" />
<application android:icon="#drawable/icon" android:label="#string/app_name">
<receiver android:name="widget.cam.com.WidgetActivity" android:label="FXMaster" android:icon="#drawable/assiconwi">
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
<action android:name="android.appwidget.action.APPWIDGET_ENABLED"/>
</intent-filter>
<meta-data
android:name="android.appwidget.provider"
android:resource="#xml/widgetprovider" />
</receiver>
<service
android:enabled="true"
android:name=".SilentService">
</service>
</application>
</manifest>
But once I click on the widget, nothing happens... any ideas why?
Thanks!
I'm trying to make an Android widget, to show some info from my app.
I have succeed to show some info, but know i what to have a feature to "switch page" in my app. It means pressing a button, and new info is showing. But how do i do it? I have tried different thing, and I'm ending up with the following code:
public class HelloWidget extends AppWidgetProvider {
RemoteViews remoteViews;
#Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
Toast.makeText(context, "onUpdate", Toast.LENGTH_SHORT).show();
RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.widget_layout);
Intent intent = new Intent();
intent.setAction(TestReceiver.TEST_INTENT);
intent.setClassName(TestReceiver.class.getPackage().getName(), TestReceiver.class.getName());
PendingIntent pendingIntent = PendingIntent.getBroadcast(context.getApplicationContext(), 0, intent, PendingIntent.FLAG_CANCEL_CURRENT);
remoteViews.setOnClickPendingIntent(R.id.bbutton1, pendingIntent);
remoteViews.setTextViewText(R.id.widgetTxt, "The textview");
appWidgetManager.updateAppWidget(appWidgetIds[0], remoteViews);
super.onUpdate(context, appWidgetManager, appWidgetIds);
}
public class TestReceiver extends BroadcastReceiver {
public static final String TEST_INTENT = "MyTestIntent";
#Override
public void onReceive(Context context, Intent intent) {
Toast.makeText(context, "You reached the TestReceiver", Toast.LENGTH_SHORT).show();
if (intent.getAction() == TEST_INTENT) {
remoteViews.setTextViewText(R.id.widgetTxt, "Is changed");
}
}
}
#Override
public void onReceive(Context context, Intent intent) {
final String action = intent.getAction();
if (AppWidgetManager.ACTION_APPWIDGET_DELETED.equals(action)) {
final int appWidgetId = intent.getExtras().getInt(
AppWidgetManager.EXTRA_APPWIDGET_ID,
AppWidgetManager.INVALID_APPWIDGET_ID);
if (appWidgetId != AppWidgetManager.INVALID_APPWIDGET_ID) {
this.onDeleted(context, new int[] { appWidgetId });
}
} else {
super.onReceive(context, intent);
}
}
#Override
public void onDeleted(Context context, int[] appWidgetIds) {
Toast.makeText(context, "onDelete", Toast.LENGTH_SHORT).show();
super.onDeleted(context, appWidgetIds);
}
}
Toast are showing "onUpdate" and then i remove it at "onDeleted". The textview also change in the onUpdate, but nothing happens when i press the button.
My Manifest look like this:
<receiver android:name=".HelloWidget" android:label="#string/app_name">
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
</intent-filter>
<meta-data android:name="android.appwidget.provider"
android:resource="#xml/hello_widget_provider" />
</receiver>
<receiver android:name=".TestReceiver" android:label="#string/app_name">
<intent-filter>
<action android:name="MyTestIntent">
</action>
</intent-filter>
</receiver>
What am i doing wrong?
Thanks
Is your TestReceiver an inner class of HelloWidget?
Then you didn't specify the correct name in the manifest.