Develop Reference

Launch single BroadcastReceiver form another application

I created an Application that shares a BroadcastReceiver that launches a Service.
The app that holds the receiver doesn't have activities, there are the receiver class and the services.
Here are the manifest declaration:
<service
android:name=".services.PrintService"
android:enabled="true"
android:exported="true" />
<receiver
android:name=".receivers.MyReceiver"
android:enabled="true"
android:exported="true">
<intent-filter>
<action android:name="art.bridge.PRINT_MESSAGE" />
</intent-filter>
</receiver>
Receiver class
public class MyReceiver extends BroadcastReceiver {
public MyReceiver() {
}
#Override
public void onReceive(Context context, Intent intent) {
Log.d(ArtAppl.name , "Receiver reached");
Intent print = new Intent(context, PrintService.class);
if(intent.getStringExtra("message") != null)
print.putExtra("message",intent.getStringExtra("message"));
else
print.putExtra("message","Message not found");
context.startService(print);
}
}
Form an another app, i try to launch the receiver like following:
Intent bReceiver = new Intent("art.bridge.PRINT_MESSAGE");
sendBroadcast(bReceiver);
But the receiver doesn't run.
Am I missing something? Do I have to set another action in the manifest?

Could it be that you need to include Intent.FLAG_INCLUDE_STOPPED_PACKAGES as a flag?
See: How to Send BroadCast from one app to another app

Priority two apps use bootcompletedReceiver on android

recently I use BOOT_COMPLETED 2 app (A app, and B app)
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED"/>
</intent-filter>
A app is activity and B app is service app
when my device boot,
first A app launch and B app launch
so, show B app screen.
I want
first B app launch and A app launch showing A app screen
perhaps, Can I give BOOT_COMPLETED Priority is possible?
finally, I want when I boot my device, show A app screen
Thanks!
add
I try
B app(service)
public class BootCompletedReceiver extends BroadcastReceiver{
#Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED) {
Intent i = new Intent("A app package name.BOOT_COMPLETED");
context.sendBroadcast(i);
}
}
}
<receiver android:name=".BootCompletedReceiver"
android:enabled="true"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED"/>
</intent-filter>
</receiver>
A app(activity)
public class BootSendReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context,Intent intent) {
if( intent.getAction().equals("B app packagename.BOOT_COMPLETED"));
Intent i = new Intent (context, MainActivity.class);
context.startActivity(i);
}
}
<receiver android:name=".BootSendReceiver">
<intent-filter>
<action android:name="blackeyeonandroid.iosystem.co.kr.simpleserviceexample.BOOT_COMPLETED"/>
</intent-filter>
</receiver>
and I try boot .. but showing B app screen

I think you can not control that..
Instead, you can make APP1 start the APP2. This way, only APP1 receives the BOOT_COMPLETE message. Then, APP1 is responsible to send a new intent to start APP2:
Maybe, you can do as follows (note that APP2 does not receive android's default BOOT_COMPLETED message):
APP1
Manifest:
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<receiver android:name=".AppToStartFirstBroadcastReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
Receiver
#Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED)) {
Intent i = new Intent("com.example.mytestapp.BOOT_COMPLETED");
context.sendBroadcast(i);
}
}
APP2
Manifest:
<receiver android:name=".AppToStartLaterBroadcastReceiver">
<intent-filter>
<action android:name="com.example.mytestapp.BOOT_COMPLETED" />
</intent-filter>
</receiver>
Receiver
#Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals("com.example.mytestapp.BOOT_COMPLETED")) {
// Do what you want in secundary APP
}
}
Note
This is an suggestion and you should adjust to your case. Since I don't have more details about your code, you may need to modify it to your case.. But you can use the idea.

Are two Broadcast Receivers (one Alarm Manager and another for System Events) required?

I am calling the following BroadcastReceiver using AlarmManager every X mins. Its working fine.
public class MyAlarmReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
if (CommonFuncs.isConnectedBySettings(context)) {
if(CommonFuncs.isUpdateTimeValid(context)){
Intent intentCurSvc = new Intent(context, CurrencySvc.class);
context.startService(intentCurSvc);
}
}
}
Manifest
<receiver
android:name=".service.AlarmSvcRecevier"
android:process=":remote" >
</receiver>
I want to use the same BroadcastReceiver for connectivity change as well, by just adding the following manifest.
<receiver
android:name=".service.AlarmSvcRecevier"
android:process=":remote" >
<intent-filter>
<action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
</intent-filter>
</receiver>
But my receiver is not getting called when WIFI is connected. I am not sure what is the problem. Do I need a separate receiver for AlarmManager and CONNECTIVITY_CHANGE to perform same operation? Is my approach correct?

How to check if my BroadcastReceiver receives the BOOT?

I have a BroadcastReceiver who should receive the BOOT.
Is there a simple way to check if the BroadcastReceiver receives the BOOT correctly?
Thanks

Assuming BOOT means BOOT_COMPLETED then you could use the following:
public class BootCompleteReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED)) {
//Do a Log or, less likely, a Toast or start your application here.
}
}
};
You would register this in the manifest like such:
<receiver android:name="com.example.yourAppName.BootReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED"/>
</intent-filter>
</receiver>

Android BroadcastReceiver in separate project

I'm developing two Android applications.
The first one calls broadcast receiver from activity.
The second one contains broadcast receiver that is called from first application.
I've manage to do broadcast call when it is in the same application with caller activity.
But when I take receiver to separate project it doesn't work. What should I change?

This is how I register receiver:
<receiver
android:name=".TestReceiver"
android:enabled="true"
android:exported="true"
android:process=":deltaFO">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED"/>
<action android:name="com.myapp.intent.action.FILE_OPERATION" />
</intent-filter>
</receiver>
This is how I send intent
Intent intent = new Intent("com.myapp.intent.action.FILE_OPERATION");
intent.putExtra("operation", operation);
context.sendBroadcast(intent);
This is class that receives intent:
public class TestReceiver extends BroadcastReceiver{
public final String TAG="TestReceiver";
#Override
public void onReceive(Context context, Intent intent) {
Log.i(TAG,"EXTERNAL BROADCAST...");
}
}