Close application from broadcast receiver
I am new to android programming. I've tried registering the broadcast receiver in action, but my receiver doesn't work when the apps are onPause. So I found that I needed to register my receiver in the manifest.
My goal is to close my application for some time after the user disconnects Wi-Fi.
This is my code, but it doesn't work.
public class ReceiverWifi extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
Handler handler = new Handler();
Runnable runnable = new Runnable() {
@Override
public void run() {
MainActivity m = new MainActivity();
m.finish();
}
};
if (intent.getAction().equals(WifiManager.WIFI_STATE_CHANGED_ACTION)) {
int newWifiState = intent.getIntExtra(WifiManager.EXTRA_WIFI_STATE,
WifiManager.WIFI_STATE_UNKNOWN);
switch (newWifiState) {
case WifiManager.WIFI_STATE_DISABLED:
Toast.makeText(context, "Wi-fi Disconnected ",
Toast.LENGTH_SHORT).show();
handler.postDelayed(runnable, 15 * 1000);
break;
}
}
}
}
my manifest:
<receiver android:name="com.example.wifimonitor.ReceiverWifi" >
<intent-filter>
<action android:name="android.net.wifi.WIFI_STATE_CHANGED" />
</intent-filter>
</receiver>
How to achieve your goal?
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Is your broadcast receiver in primary activity class? If so, you can save the global context of your application and close it later in the broadcast receiver.
If it's on a service or vendor, just send it an instance of your app when you start / register it. Then you call finish () from that instance.
EDIT:
Try the following:
In your main activity, create this public method:
public static void closeActivity(){
finish();
}
Then, in your broadcast receiver, call this method like this:
MainActivity.closeActivity();
Hope it helps;)
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Use the following code to send a new intent to MainActivity from BroadcastReceiver:
Intent i = new Intent(context, MainActivity.class);
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
i.addFlags (Intent.FLAG_ACTIVITY_SINGLE_TOP);
i.putExtra("close_activity",true);
context.startActivity(i);
in MainActivity use OnNewIntent like below:
@Override
protected void onNewIntent(Intent intent) {
super.onNewIntent(intent);
if(intent.getBooleanExtra("close_activity",false)){
this.finish();
}
}
FYI, I haven't tried the above code, but similar code works for me.
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MainActivity m = new MainActivity();
m.finish();
When you say you're done, it won't clear the stack because you didn't first load the activity onto the stack. MainActivity is not an activity here, it is just a class object in your code
You have a broadcast receiver in mainactivity when onreceive exits. don't instantiate with a new one.
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