I send a Broadcast by doing:
Intent intent = new Intent("com.usmaan.myApp.DATA_RECEIVED");
intent.putExtra("matchId", newRowId);
LocalBroadcastManager.getInstance(mContext).sendBroadcast(intent);
This is the Service that wraps up the AsyncTask which runs Broadcasts the above:
<service
android:name=".services.DataService"
android:exported="false" />
In my Activity, I register a Receiver in onResume:
IntentFilter intentFilter = new IntentFilter("com.usmaan.myApp.DATA_RECEIVED");
registerReceiver(mDataReceiver, intentFilter);
The `BroadReceiver looks like this:
private class DataReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
final long matchId = intent.getLongExtra("matchId", 0);
Toast.makeText(LaunchActivity.this, "" + matchId, Toast.LENGTH_LONG);
}
}
The onReceive is never fired. What am I doing wrong?
Either use LocalBroadcastManager in both places (sendBroadcast() and registerReceiver()), or do not use LocalBroadcastManager at all. Right now, you have a mismatched pair.
Related
Let's say I have this receiver:
private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
if(ACTION.equals(intent.action)){
doSth()
}
};
I then register it dynamically like that:
mContext.registerReceiver(mReceiver, new IntentFilter(ACTION));
Do I need to check inside the receiver with
if(ACTION.equals(intent.action)){
doSth()
}
since inside the method registerReceiver I put an intentFilter with ACTION?
You do not need to check for action assuming your filter is correct. As per documentation, "The receiver will be called with any broadcast Intent that matches filter, in the main application thread". More info: https://developer.android.com/reference/android/content/Context.html#registerReceiver(android.content.BroadcastReceiver,%20android.content.IntentFilter)
I have a service that subscribes from the server by Mqtt client. when arrived a message I do broadcast message and topic. In my fragment I declare a broadcast receiver like this:
private final BroadcastReceiver mChatReceiver = new BroadcastReceiver() {
int areaCode;
private BroadcastReceiver init(int areaCode) {
Log.i("====>", "init: BroadcastReceiver ");
this.areaCode = areaCode;
return this;
}
#Override
public void onReceive(Context context, Intent intent) {
Log.i("====>", "onReceive: BroadcastReceiver ");
//do sth
}
}.init(areaCode);
but init(areaCode) do not work and in original areaCode is for example 2 but I did not get 2 in private BroadcastReceiver init(int areaCode). I got 0.
how can I pass an integer out of private final BroadcastReceiver mChatReceiver class to this class?
Say you are registering for some custom IntentFilter like this:
IntentFilter filter = new IntentFilter("com.packageName.ACTION_SEND_INTEGER");
Register receiver like this:
your_context.registerReceiver(mChatReceiver,filter);
Trigger your broadcast receiver like this and send an integer:
Intent intent = new Intent("com.packageName.ACTION_SEND_INTEGER");
intent.putExtra("your_value",123);
sendBroadcast(intent);
I have an IntentService defined as below:
<service android:name=".service.AppService" android:process=":app_process" android:icon="#mipmap/ic_launcher" />
I have a WakefulBroadcastReceiver that receives some data and I would like to call my already running service above. The service above is always running, even if it is killed, it restarts. How can I pass messages to that?
I read the following:
http://www.mysamplecode.com/2011/10/android-intentservice-example-using.html
http://www.truiton.com/2014/09/android-service-broadcastreceiver-example/
http://developer.android.com/guide/components/services.html
I tried to do a startService, PendingIntent among other things and nothing seems to work.
First of all, remember that an IntentService works in a different worker thread, there for it's not possible to have intercommunication with the Activity that invoked it. That's why mostly we use them for synchronization on background where feedback to the user is not needed. However, if you want to pass some information to the Activity, you have to use a BroadcastReceiver as you said, and from there create the Intent that will send "data" to the Activity.
Going back to your question, you have to add the service and the receiver in your AndroidManifest.xml inside the <application> tag
<service android:name=".AppService"
android:enabled="true"/>
<receiver android:name=".WakefulBroadcastReceiver" >
</receiver>
Then in your Activity launch the service like this (whenever you need it, in the onCreate, or in a button listener)
IntentFilter filter = new IntentFilter(WakefulBroadcastReceiver.ACTION_RESP);
filter.addCategory(Intent.CATEGORY_DEFAULT);
WakefulBroadcastReceiver broadcastReceiver = new WakefulBroadcastReceiver();
registerReceiver(broadcastReceiver, filter);
In your BroadcastReceiver you override the onReceive() method like this:
#Override
public void onReceive(Context context, Intent intent) {
// HERE IS WHERE YOU RECEIVE THE INFORMATION FROM THE INTENTSERVICE, FROM HERE YOU CAN START AN ACTIVITY OR WHATEVER YOU AIM
Toast.makeText(context, "IntentService Broadcasting", Toast.LENGTH_SHORT).show();
}
Also in the same BroadcastReceiver add this variable that identifies the intentfilter:
public static final String ACTION_RESP = "MY_FILTER_NAME"
In your IntentService class you have to override the onHandleIntent() method like this:
#Override
protected void onHandleIntent(Intent intent) {
String msg = intent.getStringExtra("MSG");
Intent broadcast = new Intent();
broadcast.setAction(WakefulBroadcastReceiver.ACTION_RESP);
broadcast.addCategory(Intent.CATEGORY_DEFAULT);
broadcast.putExtra("MSG", resultTxt);
// HERE IS WHERE YOU SEND THE INFORMATION YOU LOADED TO THE APP
sendBroadcast(broadcast);
}
I have a demo project in my GitHub account here, where I use bound and unbound services and IntentServices:
https://github.com/isaacurbina/PermissionsAndServices
I hope it helps.
Kind regards!
You can write this in your class that extends WakefulBroadcastReceiver :
#Override
public void onReceive(Context context, Intent intent) {
Intent gcmIntent = new Intent(context, MessageService.class);
gcmIntent.putExtras(intent.getExtras());
startWakefulService(context, gcmIntent);
setResultCode(Activity.RESULT_OK);
}
And write this in your class that extend IntentService :
#Override
protected void onHandleIntent(Intent intent) {
Bundle bundle = intent.getExtras();
//do sth with that data
MessageReceiver.completeWakefulIntent(intent);
}
I am trying to use BroadcastReceiver inside my service but it is not working properly.
I am starting my service in an onCreate in my activity. Then in the services onCreate I am calling the following to register the Broadcast reciever:
IntentFilter filter = new IntentFilter();
registerReceiver(DataUpdateReceiver, filter);
Here's the broadcast receiver i am trying to register:
private BroadcastReceiver DataUpdateReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
Toast.makeText(context, "Test", Toast.LENGTH_LONG).show();
}
};
Then else where in the Activity I am trying to call this so therefor the Toast message will be displayed.
Intent i = new Intent();
sendBroadcast(i);
But the Toast is not being displayed, I have also tried logging but nothing shows up. If anyone could help me out on this it would be appreciated, ty.
In my opinion, you have to specify action (or actions), which fire onReceive() method. Something like this might help you:
IntentFilter filter = new IntentFilter("some_action");
registerReceiver(DataUpdateReceiver, filter);
...
Intent i = new Intent("some_action");
sendBroadcast(i);
Declare on top of the class
public final static String MY_RECEIVER_START = "com.yourcompanyname.appname.MY_RECEIVER_START";
private Radio radio;
In the service constructor
//Initiate our receiver
radio = new Radio();
//Activate our recevier
context.registerReceiver(radio, new IntentFilter(MY_RECEIVER_START));
Also in the service, create the receiver class and the method which shows toast
/**
* Receiver Class
* This setup checks for the incoming intent action to be able to
* attach more messages to one receiver.
*/
private class Radio extends BroadcastReceiver{
#Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(MY_RECEIVER_START)){
//show toast
}
}
}
After from anywhere in the application send message to our radio
context.sendBroadcast(new Intent("com.yourcompanyname.appname.MY_RECEIVER_START"));
I'm stuck here at my previous struggle >> Prev. Struggle!
Raanan there helped! me a lot but then he I think went away as timing zone is different , now I'm stuck with my service code that I'm using to call my BroadcastReceiver() that is in the activity! and also I'm not getting with what parameter I should load the filter.addAction(action); in place of action??
Kinldy guide me!
CODE in the Server:
Toast.makeText(Server.this, hr +" , " +min, Toast.LENGTH_LONG).show();
Intent intent = new Intent(this, andRHOME.class);
//intent.putExtra("sendMessage","1");
sendBroadcast(intent);
and CODE IN THE ACITIVITY(Broadcast Receiver)
private BroadcastReceiver ReceivefrmSERVICE = new BroadcastReceiver(){
#Override
public void onReceive(Context context, Intent intent) {
Toast.makeText(context, "IN DA BroadCASTER",
Toast.LENGTH_LONG).show();
sendMessage("1");
}
};
IntentFilter filter = new IntentFilter();
You need to add these line to regiester your receiver for some action for example define a Global variable like this:
public static String NOTIFCATION_BROADCAST_ACTION = "com.your_packagename.UPDATE_NOTIFICATION_INTENT";
then register the action like this in your activity onCreate() Method.
IntentFilter filter = new IntentFilter();
filter.addAction(Global.NOTIFCATION_BROADCAST_ACTION);
registerReceiver(ReceivefrmSERVICE, filter);
Then send the broadcast from your service like this
Intent broadcast = new Intent();
broadcast.setAction(Global.NOTIFCATION_BROADCAST_ACTION);
sendBroadcast(broadcast);
Then in your broadcast Receiver filter this action like this
private BroadcastReceiver ReceivefrmSERVICE = new BroadcastReceiver(){
#Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(Global.NOTIFCATION_BROADCAST_ACTION)) {
//Do your stuff here :)
}
}
};