QT 5.4 How do I know the Battery Level on Android?

helpforprogrammer

Sanchir Kartiev

I think so you can resolve this problem using JNI.

helpforprogrammer

I have an error java.lang.RuntimeException: Can not create handler inside thread that has not called Looper.prepare ()

@import android.content.Intent;
import android.content.IntentFilter;
import android.os.BatteryManager;
import android.app.Activity;
import android.os.Bundle;

public class NotificationClient extends org.qtproject.qt5.android.bindings.QtActivity
{

public float getBatteryLevel() {
    Intent batteryIntent = registerReceiver(null, new     IntentFilter(Intent.ACTION_BATTERY_CHANGED));
    int level = batteryIntent.getIntExtra(BatteryManager.EXTRA_LEVEL, -1);
    int scale = batteryIntent.getIntExtra(BatteryManager.EXTRA_SCALE, -1);
    if(level == -1 || scale == -1) {
        return 50.0f;
    }

    return ((float)level / (float)scale) * 100.0f;
}

public static float notify2()
{
    try{
    NotificationClient obj1 = new NotificationClient();
    return obj1.getBatteryLevel();
    }catch(Exception e){
    System.out.println( e.toString() );
    }
}

}@