Manifest;
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
Java;
int sarj;
private BroadcastReceiver alici = new BroadcastReceiver(){
@Override
public void onReceive(Context ctxt, Intent intent) {
sarj = intent.getIntExtra(BatteryManager.EXTRA_LEVEL, 0);
TextView isim = (TextView) findViewById(R.id.textView);
isim.setText(String.valueOf(sarj) + "%");
}
};
OnClick...
TextView isim = (TextView) findViewById(R.id.textView);
this.registerReceiver(this.alici, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
isim.setText(String.valueOf(isim));
burada anlatilmis http://www.tutorialforandroid.com/2009/01/getting-battery-information-on-android.html
