Scheduled Alarm Manager Not Working Android

I am trying to start an alarm service that repeats every day at a particular time. I have gone through a lot of threads on stack overflow regarding this but no luck. I followed a f

Solution 1:

Here is what I did to get it working:

1) Added <uses-permission android:name="com.android.alarm.permission.SET_ALARM"/> to my manifest file.

2) Changed code in my Main activity to:

 AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);

        Calendar calendar = Calendar.getInstance();
        calendar.set(Calendar.HOUR, 3);
        calendar.set(Calendar.MINUTE, 29);
        calendar.set(Calendar.AM_PM, Calendar.PM);

         Intent myIntent = new Intent(this, MyReceiver.class);
         pendingIntent = PendingIntent.getBroadcast(this, 0, myIntent,0);

         alarmManager.setInexactRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(),
                 AlarmManager.INTERVAL_DAY, pendingIntent);

Hope someone finds this helpful!

Solution 2:

Main Activity

public class MainActivity extends AppCompatActivity {
 @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Intent intent = new Intent(this, MyBroadcastReceiver.class);
        PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
        AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
        alarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis()
                + (60 * 1000), pendingIntent); // 60 seconds after the current time
    }
}

Alarm Receiver

public class MyBroadcastReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {

        
        Log.e("Testing","ok");

    }

}

Manifests file

 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
        package="com.testapp">
    
        <uses-permission android:name="android.permission.INTERNET" />
        <uses-permission android:name="android.permission.WAKE_LOCK" />
        <uses-permission android:name="android.permission.VIBRATE" />
        <uses-permission android:name="android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS"/>
        <uses-permission android:name="com.android.alarm.permission.SET_ALARM"/>
    
        <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=".MyBroadcastReceiver" 
              android:enabled="true" />
        </application>
    
    </manifest>

For background working add this in main activity(if application remove in to recent)

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            Intent intent = new Intent();
            String packageName = getPackageName();
            PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
            if (!pm.isIgnoringBatteryOptimizations(packageName)) {
                intent.setAction(Settings.ACTION_REQUEST_IGNORE_BATTERY_OPTIMIZATIONS);
                intent.setData(Uri.parse("package:" + packageName));
                startActivity(intent);
            }
        }