The purpose of the app is to show a view on home screen while power connect or disconnect irrespective of app's running status. It should show view on home screen even if the app is not running. PROBLEM: 1: No pop up screen is showing on while app is close.
Note: It shows a popup screen while app is running.
Device : Lollipop
Mode : Developer Mode
Here I have attached the code. The main Activity class is as below. It opens on start of application.
public class MainActivity extends AppCompatActivity {
private static final int REQUEST_CODE_SOME_FEATURES_PERMISSIONS = 101;
static WindowManager.LayoutParams params;
static WindowManager wm;
static ViewGroup lockScreen;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Bundle bundle = getIntent().getExtras();
try {
String from = bundle.getString("from");
if (from.equalsIgnoreCase("broadcast")) {
startActivity(new Intent(getApplicationContext(), BatteryAdActivity.class));
finish();
}
} catch (Exception ex) {
}
getPermission();
}
private void getPermission() {
String[] PERMISSIONS = {Manifest.permission.BATTERY_STATS, Manifest.permission.SYSTEM_ALERT_WINDOW, Manifest.permission.REORDER_TASKS};
if (!hasPermissions(this, PERMISSIONS)) {
ActivityCompat.requestPermissions(this, PERMISSIONS, REQUEST_CODE_SOME_FEATURES_PERMISSIONS);
}
}
public static boolean hasPermissions(Context context, String... permissions) {
if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && context != null && permissions != null) {
for (String permission : permissions) {
if (ActivityCompat.checkSelfPermission(context, permission) != PackageManager.PERMISSION_GRANTED) {
return false;
}
}
}
return true;
}
}
2:The BroadCast receiver class is as below.
public class PowerConnectionReceiver extends BroadcastReceiver {
Context context;
@Override
public void onReceive(Context context, Intent intent) {
this.context = context;
PackageManager pm = context.getPackageManager();
Intent launchIntent = pm.getLaunchIntentForPackage("com.dogpo.batteryoptimize");
launchIntent.putExtra("from", "broadcast");
context.startActivity(launchIntent);
showMessage("charging");
}
private void showMessage(String charging) {
Toast.makeText(context, charging, Toast.LENGTH_SHORT).show();
}
}
3: The activity which opens on power disconnect or connect is as below.
public class BatteryAdActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_battery_ad);
}
}
4: The Manifest code is as below.
<?xml version="1.0" encoding="utf-8"?>
<uses-permission android:name="android.permission.BATTERY_STATS" />
<uses-permission android:name="android.permission.REORDER_TASKS" />
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name=".PowerConnectionReceiver">
<intent-filter>
<action android:name="android.intent.action.ACTION_POWER_CONNECTED" />
<action android:name="android.intent.action.ACTION_POWER_DISCONNECTED" />
</intent-filter>
</receiver>
<activity android:name=".BatteryAdActivity"
></activity>
</application>
