Android broadcastreceiver not triggering when app is not running

Question

Following this guide https://developer.android.com/training/monitoring-device-state/battery-monitoring.html

I made a receiver that should log battery info to a file

Answer 1

Try to set android:enabled="true" to your receiver

Like this

 <receiver android:name=".Receiver"
    android:enabled="true">
        <intent-filter>
            <action android:name="android.intent.action.ACTION_POWER_CONNECTED"/>
            <action android:name="android.intent.action.ACTION_POWER_DISCONNECTED"/>
        </intent-filter>
    </receiver>

Update

I just implemented it in my app your's way and it worked. But I did it with right click->new->other->broadcast receiver

After inserting intent-filter I got code like this

    <receiver
        android:name=".MyReceiver"
        android:enabled="true"
        android:exported="true">
        <intent-filter>
            <action android:name="android.intent.action.ACTION_POWER_CONNECTED"/>
            <action android:name="android.intent.action.ACTION_POWER_DISCONNECTED"/>
        </intent-filter>
    </receiver>

And it actually calling onReceive method

Answer 2

Did you try using wake-locks? Generally app will wake up on the receive of broascast butif it doesnot (happens in few devices), then try using wake-locks which will forcefully wake up the device.

How to use wake-locks :

//Register for wake-locks

if (mWakeLock == null) {
        PowerManager pm = (PowerManager)yourcontext.getSystemService(Context.POWER_SERVICE);
        mWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, yourcontext);
        mWakeLock.setReferenceCounted(false);

}

//Apply wake-lock using acquire

mWakeLock.acquire();