android - 根据android唯一ID取消alarmmanager pendingintent

Question

我正在安排任务并根据日期和时间添加警报管理器，计划任务正在添加到列表中..当我添加任何任务时，它也会添加到 sqlite 数据库中并为警报管理器的待处理 Intent 分配一个唯一的 ID。

现在，如果我想解除警报，那么如果我从列表中删除该行，那么我也想解除该特定警报。我可以从数据库中删除行，但如何解除为该行设置的警报？

我的代码如下:

               Button  AddData=(Button)findViewById(R.id.senddata);
        AddData.setOnClickListener(new View.OnClickListener()
        {
        public void onClick(View v) {
            AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);                 
            int iUniqueId = (int) (System.currentTimeMillis() & 0xfffffff);

                Date= updatedate.getText().toString();
                Time= updateTime.getText().toString();
                Discripton= discription.getText().toString();
                //---get current date and time---
                Calendar calendar = Calendar.getInstance();       
                //---sets the time for the alarm to trigger---
                calendar.set(Calendar.YEAR, year);
                calendar.set(Calendar.MONTH, month);
                calendar.set(Calendar.DAY_OF_MONTH, day);                 
                calendar.set(Calendar.HOUR_OF_DAY, mHour);
                calendar.set(Calendar.MINUTE, mMinute);
                calendar.set(Calendar.SECOND, 0);
                Log.i("********####",year+"  ,"+month+" , "+day+" , "+mHour+" , "+mMinute+"----"+ calendar.getTimeInMillis());

                Intent intent = new Intent(AddEditExpense.this, TimeAlarm.class);
                //intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_SINGLE_TOP);

                Bundle b12 = new Bundle();
                mStuffresults=Discripton;
                b12.putString("serverresponse", mStuffresults);
                intent.setAction("" + Math.random());
                intent.putExtras(b12);
                PendingIntent displayIntent = PendingIntent.getBroadcast(AddEditExpense.this,iUniqueId,
                intent, PendingIntent.FLAG_UPDATE_CURRENT);
                    alarmManager.set(AlarmManager.RTC_WAKEUP,
                    calendar.getTimeInMillis(), displayIntent);

}
}

---

请参阅此处:已更新

  public boolean onContextItemSelected(MenuItem item) {
        switch(item.getItemId()) {
            case DELETE_ID:
                 UniqueId=AddEditExpense.s;
                 Log.i("UniqueId",UniqueId);
                    Integer i = Integer.valueOf(UniqueId);
                    PendingIntent contentIntent = PendingIntent.getBroadcast(TaskReminder.this, i,
                            new Intent(),PendingIntent.FLAG_UPDATE_CURRENT);
                    AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
                    alarmManager.cancel(contentIntent);
                AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
                mDbHelper.deleteNote(info.id);
                fillData();

                return true;
        }

Answer 1

您可以检索您为警报创建的 PendingIntent:

PendingIntent displayIntent = PendingIntent.getBroadcast(AddEditExpense.this, iUniqueId, intent, PendingIntent.FLAG_NO_CREATE);

请务必使用您保存在 sqlite 数据库中的唯一 ID，用于此警报。现在您应该取消 AlarmManager 中的 PendingIntent。并取消 PendingIntent本身:

if(displayIntent != null) {
   alarmManager.cancel(displayIntent);
   displayIntent.cancel();  
}