how to cancel multiple alarm using other activity

问题

Create note Activity from where Alarm trigger! and Alarm delete code in other Activity,it delete only last trigger Alarm means if 3 Alarm are created and I want to delete Alarm 1 it deletes but when the time of Alarm 1 reaches it trigger while it already deleted and it wont trigger other Alarm 2 and 3, on static broadcast id it trigger only last alarm for example alarm 3 trigger delete code in other activity if it delete on using same pending intent in other activity how can i use the pending intent which use trigger alarm in my delete alarm activity

 AlarmManager alarmMgr = (AlarmManager)getSystemService(Context.ALARM_SERVICE);
                    Intent intent = new Intent(getApplicationContext(), AlarmReceiver.class);
                    String alertTitle = mTitleText.getText().toString();
                    intent.putExtra(getString(R.string.alert_title), alertTitle);
                   // broadcastCode++;
                    PendingIntent pendingIntent = PendingIntent.getBroadcast(getApplicationContext(), broadcastCode, intent,  PendingIntent.FLAG_UPDATE_CURRENT);
                    alarmMgr.set(AlarmManager.RTC_WAKEUP, calender.getTimeInMillis(), pendingIntent);
                    cv.put(mDbHelper.TIME, timeString);
                    cv.put(mDbHelper.DATE, dateString);
public void delete(int id)
{

    db.delete( DbHelper.TABLE_NAME, DbHelper.C_ID + "="+id, null);
    db.close();

    Intent intent = new Intent(getBaseContext(), AlarmReceiver.class);
    PendingIntent pendingIntent = PendingIntent.getBroadcast(getBaseContext(), CreateNote.broadcastCode, intent, 0);
    AlarmManager alarmManager = (AlarmManager)getSystemService(Context.ALARM_SERVICE);
    alarmManager.cancel(pendingIntent);

}  

回答1:

The PendingIntent needs to be created exactly as it was when you started the AlarmManager.

Use PendingIntent.FLAG_UPDATE_CURRENT instead of 0 when creating the PendingIntent to cancel the alarm. FLAG_UPDATE_CURRENT is equal to the constant 134217728, not 0.

回答2:

Use this code:

PendingIntent pendingIntent = PendingIntent.getBroadcast(this, _id, intent, 0);
        AlarmManager alarmManager = (AlarmManager) this.getSystemService(Context.ALARM_SERVICE);
        alarmManager.cancel(pendingIntent);

Hope this helps.

来源：https://stackoverflow.com/questions/43291826/how-to-cancel-multiple-alarm-using-other-activity