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Broadcast receiver in fragment called 3 time send only once

I am creating sending broadcast from activity to fragment. But in my case receiver called three times as I only send broadcast once. please help
Here , I am registering broadcast in Fragment
#Override
public void onResume() {
super.onResume();
getActivity().registerReceiver(broadcastReceiver, new IntentFilter("example.com"));
}
#Override
public void onPause() {
super.onPause();
getActivity().unregisterReceiver(broadcastReceiver);
}
And my receiver in Fragment
BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
// Here I am receiving the data and want to update the list in
//my fragment
};
Sending the broadcast
Intent intent = new Intent("example.com");
intent.putExtra("data","any_data");
sendBroadcast(intent);

You must always set Action to Intent like below,
Intent intent = new Intent();
intent.setAction("action_type");
sendBroadcast(intent);
And in your receiver add this line :
BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
if(intent.getAction("action_type")) {
// Write your code here now.
}
};
Hope it works.

BroadcastReceiver does not receive intent Intent.ACTION_LOCALE_CHANGED

I want my app to be aware anytime the user changes the locale. So in my Application class, I create a receiver to listen to the system intent ACTION_LOCALE_CHANGED:
public final class MyApp extends Application {
private BroadcastReceiver myReceiver = new BroadcastReceiver() {
#Override public void onReceive(Context context, Intent intent) {
String locale = Locale.getDefault().getCountry();
Toast.makeText(context, "LOCALE CHANGED to " + locale, Toast.LENGTH_LONG).show();
}
};
#Override public void onCreate() {
IntentFilter filter = new IntentFilter(Intent.ACTION_LOCALE_CHANGED);
LocalBroadcastManager.getInstance(this).registerReceiver(myReceiver, filter);
}
}
When I press home and go to the settings app to change my locale, the Toast is not shown. Setting the breakpoint inside onReceive shows it never gets hit.

Why do you want the BroadcastReceiver in Application class. My suggestion is to have a separate class for BroadcastRecevier.
public class LocaleChangedReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction (). compareTo (Intent.ACTION_LOCALE_CHANGED) == 0)
{
Log.v("LocaleChangedRecevier", "received ACTION_LOCALE_CHANGED");
}
}
}
and register your Brodcast receiver in Manifest file.
<receiver
android:name=".LocaleChangedReceiver"
android:enabled="true"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.LOCALE_CHANGED" />
</intent-filter>
</receiver>

Intent.ACTION_LOCALE_CHANGED is not a local broadcast, so it won't work when you register it with LocalBroadcastManager. LocalBroadcastManager is used for the broadcast used inside your app.
public class MyApp extends Application {
private BroadcastReceiver myReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
String locale = Locale.getDefault().getCountry();
Toast.makeText(context, "LOCALE CHANGED to " + locale,
Toast.LENGTH_LONG).show();
}
};
#Override
public void onCreate() {
super.onCreate();
IntentFilter filter = new IntentFilter(Intent.ACTION_LOCALE_CHANGED);
registerReceiver(myReceiver, filter);
}
}

LocalBroadcastManager not working

I'm trying to sendMessage from service to activity, but for some reason it's not working.
Activity
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_barcode);
LocalBroadcastManager.getInstance(this).registerReceiver(mMessageReceiver,
new IntentFilter("custom-event-name"));
private BroadcastReceiver mMessageReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
// Get extra data included in the Intent
Boolean state = intent.getBooleanExtra("state",false);
if(state){
Toast.makeText(getApplicationContext(),"Данные успешно отправлены",Toast.LENGTH_SHORT).show();
}
}
};
#Override
protected void onDestroy() {
// Unregister since the activity is about to be closed.
LocalBroadcastManager.getInstance(this).unregisterReceiver(mMessageReceiver);
super.onDestroy();
}
Service
private void sendMessage(boolean state) {
Log.d("sender", "Broadcasting message");
Intent intent = new Intent("custom-event-name");
// You can also include some extra data.
intent.putExtra("state", state);
LocalBroadcastManager.getInstance(this).sendBroadcast(intent);
}
Log.d "broadcasting message" is shown and then nothing happens
PROBLEM SOLVED
In android manifest
<service
android:name=".service.TerminalService"
android:process=":update_service" >
</service>
It seems when android:process is specified localbroadcastmanager is not working. I just deleted android:process line and it worked

Nothing wrong with your code .only update your receive method else clause
private BroadcastReceiver mMessageReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
// Get extra data included in the Intent
Boolean state = intent.getBooleanExtra("state",false);
if(state){
Toast.makeText(getApplicationContext(),"Данные успешно отправлены",Toast.LENGTH_SHORT).show();
}
else {
Toast.makeText(getApplicationContext(),"else message ",Toast.LENGTH_SHORT).show();
}
}
};

com.android.support:localbroadcastmanager -> change
androidx.localbroadcastmanager:localbroadcastmanager:1.0.0

unable to send and receive Broadcast from activity :android

I am unable to send a Broadcast from one activity to other activity please see the code below. There are two buttons one for send Broadcast and other is for receiving Broadcast. I have tried following code. But my Receiver activity is running only when I click on checkBrodcast button.
public class MainActivity extends Activity {
protected void onCreate(Bundle savedInstanceState) {
sendBrodcast = (Button) findViewById(R.id.send_brodcast);
checkBrodcast = (Button) findViewById(R.id.check_brodcast);
sendBrodcast.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
Log.w("Check", "inside send broadcast");
Intent broadcast = new Intent();
broadcast.setAction("BROADCAST_ACTION");
broadcast.addCategory(Intent.CATEGORY_DEFAULT);
sendBroadcast(broadcast);
}
});
checkBrodcast.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent(MainActivity.this, Receiver.class);
startActivity(intent);
}
});
}
}
public class Receiver extends Activity {
BroadcastReceiver br = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
Log.w("Check", "Inside On Receiver");
Toast.makeText(getApplicationContext(), "received",
Toast.LENGTH_LONG).show();
}
};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
IntentFilter filter = new IntentFilter();
filter.addAction("BROADCAST_ACTION");
filter.addCategory(Intent.CATEGORY_DEFAULT);
registerReceiver(br, filter);
}
#Override
protected void onPause() {
super.onPause();
unregisterReceiver(br);
}
}

The way you have Initiated the BroadCast is fine. You just need to change the way you intercept this Broadcast.
INITIATE A BROADCAST
Intent broadcast = new Intent();
broadcast.setAction("BROADCAST_ACTION");
broadcast.addCategory(Intent.CATEGORY_DEFAULT);
sendBroadcast(broadcast);
INTERCEPT IT
A) CREATE A RECEIVER
BroadcastReceiver br = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
Log.w("Check", "Inside On Receiver");
Toast.makeText(getApplicationContext(), "received",
Toast.LENGTH_LONG).show();
}
};
B) REGISTER RECEIVER - Do this onCreate Activity Call Back
registerReceiver(br , new IntentFilter("BROADCAST_ACTION"));
Broadcast receivers registered this way(SINGLETON DECLARATION and NOT IN MANIFEST) - do not receive broadcasts unless the containing app is running. But as in your case you are firing a broadcast message onClick event, so the the app must be running. So I guess it is safe to assume that your receiver set up using this method, will work fine - provided the class in which you declared your receiver is created and exists in the activity stack, before you fire a broadcast from a different activity.

This is because you're not declaring your broadcast receiver in your Android Manifest. Dynamically registered receivers well not receive broadcasts unless the containing app is running.
If you want the second activity to get the broadcasts without having to click the button to start the app, then add the appropriate broadcast receiver to the second activities android manifest.

If you want to broadcast data from one activity to another, simply make use of Intent. In the light of your case simply call finish() in your onClickListener() and then in the onDestroy method of your second activity create Intent object and broadcast data as intent extra then, use intent.getExtra() method on onReceive() method of your broadcastReceiver class.
For more details:
follow this tutorial

The problem is with your manifest. You have to register your receiver in your Manifest like this:
<receiver android:name="MyReceiver" >
<intent-filter>
<action android:name="com.android.mybroadcast" />
</intent-filter>
</receiver>
But anyway, personally, I don't like how you are building the broadcast receiver structure.
You should create a class that extendes from BroadcastReceiver like:
public class MyBroadcastReceiver extends BroadcastReceiver
{
#Override
public void onReceive(Context context, Intent intent)
{
Toast.makeText(context, "Your receiver!!!!.",
Toast.LENGTH_LONG).show();
}
}
Dont forget to set up your manifest:
<receiver android:name="MyBroadcastReceiver" >
</receiver>
And now the class from you are calling:
public class AlarmActivity extends Activity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
public void startAlert(View view)
{
int i = Integer.parseInt(text.getText().toString());
Intent intent = new Intent(this, MyBroadcastReceiver.class);
PendingIntent pendingIntent =
PendingIntent.getBroadcast(this.getApplicationContext(), 234324243, intent, 0);
}
}
Something like that!!!

End to end BroadcastReceiver linking

There are lots of posts out there on using BroadcastReceiver for receiving messages in an Activity that are broadcast from a Service. I've been through dozens and haven't found one that puts it all together. Bottom line is I can't get my Activity to receive broadcasts. Here's what I've done to date:
Service class broadcast:
Context context = this.getApplicationContext();
Intent intentB2 = new Intent(context, StationActivity.AudioReceiver.class);
intentB2.putExtra("Track", mSongTitle);
this.sendBroadcast(intentB2);
Log.i(TAG, "Broadcast2: " + mSongTitle);
Activity class declaration:
public String INCOMING_CALL_ACTION = "com.example.android.musicplayer.action.BROADCAST";
Activity class inline BroadcastReceiver:
public class AudioReceiver extends BroadcastReceiver
{
#Override
public void onReceive(Context context, Intent intent) {
// Handle receiver
Log.i(TAG, "Inner BroadcastReceiver onReceive()");
String mAction = intent.getAction();
if(mAction.equals(INCOMING_CALL_ACTION)) {
Log.i(TAG, "Inner BroadcastReceiver onReceive() INCOMING_CALL_ACTION");
}
}
};
Android manifest receiver declaration:
<receiver android:name=".StationActivity.AudioReceiver">
<intent-filter>
<action android:name="com.example.android.musicplayer.action.BROADCAST" />
</intent-filter>
</receiver>
What am I missing? Thanks in advance.

In your service:
Intent intentB2 = new Intent("some_action_string_id");
intentB2.putExtra("Track", mSongTitle);
sendBroadcast(intentB2);
Then in your activity:
public class MyActivity extends Activity {
private BroadcastReceiver myReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
Toast.makeText(getApplicationContext(), "Woot! Broadcast received!", Toast.LENGTH_SHORT);
}
};
#Override
protected void onResume() {
super.onResume();
IntentFilter filter = new IntentFilter("some_action_string_id"); // NOTE this is the same string as in the service
registerReceiver(myReceiver, filter);
}
#Override
protected void onPause() {
super.onPause();
unregisterReceiver(myReceiver);
}
}
This is the common approach to receive broadcast events in activities. Note that we are registering the receiver when the activity is in the foreground and unregistering it when the activity is no longer visible.

replace your service code with below code and add String INCOMING_CALL_ACTION in your service or directly use it from activity class.
Context context = this.getApplicationContext();
Intent intentB2 = new Intent();
intentB2.setAction(INCOMING_CALL_ACTION);
intentB2.putExtra("Track", mSongTitle);
this.sendBroadcast(intentB2);
Log.i(TAG, "Broadcast2: " + mSongTitle);