Android-在设定的时间创建重复通知

Question

I have looked through a ton of documentation and stackoverflow questions on how to set a repeating notification set to a certain time but can not get any of them to work. Here is what I have right now.

The method I set up the AlarmManager in:

//set alarm method
private void setAlarm() {
    if(enableCheckBox.isChecked()) {
        //save time / title / message
        mTinyDB.putInt(Constants.SAVED_HOUR, timePicker.getCurrentHour());
        mTinyDB.putInt(Constants.SAVED_MINUTE, timePicker.getCurrentMinute());
        mTinyDB.putString(Constants.SAVED_TITLE, titleEditText.getText().toString().trim());
        mTinyDB.putString(Constants.SAVED_MESSAGE, messageEditText.getText().toString().trim());
        mTinyDB.putBoolean(Constants.SAVED_NOTIFICATION_ENABLED, enableCheckBox.isChecked());

        //create repeating notification
        Intent intent = new Intent(NotificationActivity.this, Notify.class);
        AlarmManager manager = (AlarmManager) getSystemService(Activity.ALARM_SERVICE);
        PendingIntent pendingIntent = PendingIntent.getService(this,
                0, intent, 0);
        Calendar cal = Calendar.getInstance();
        cal.set(Calendar.HOUR_OF_DAY, mTinyDB.getInt(Constants.SAVED_HOUR, 0));
        cal.set(Calendar.MINUTE,  mTinyDB.getInt(Constants.SAVED_MINUTE, 0));
        cal.set(Calendar.SECOND, 0);
        cal.set(Calendar.MILLISECOND, 0);
        manager.setRepeating(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(), 24 * 60 * 60 * 1000, pendingIntent);
    }
}

The Notify class which extends BoradcastReceiver:

public class Notify extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
    TinyDB mTinyDB = new TinyDB(context);
    Notification builder = new Notification.Builder(context)
            .setContentTitle(mTinyDB.getString(Constants.SAVED_TITLE))
            .setContentText(mTinyDB.getString(Constants.SAVED_MESSAGE))
            .setSmallIcon(R.drawable.ic_action_check)
            .setContentIntent(pIntent)
            .build();
    NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
    notificationManager.notify(1, builder);
}

}

Am I doing this completely wrong? I can't get anything to come up (at least at the set time). Help or guidance is appreciated :)

Answer 1

You're using PendingIntent.getService , but your intent is not for a service. For a BroadcastReceiver , you should be using PendingIntent.getBroadcast .

PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, 0);

Answer 2

The problem you're running into is that you can't set an exact , repeatable alarm in Android. If you want your repeating alarm to occur at an exact time, you must set a one time exact alarm and recreate it after the alarm goes off in your code.

Citation: Documentation for setRepeating

Answer 3

In order for the system to be able to launch a component, it should be registered in your manifest:

AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.mypackage.myapplication" >
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <receiver
            android:name=".Notify" />
    </application>
</manifest>