无法在broadcastreceiver onReceive（）中启动警报

Question

我正在尝试使用以下方法来创建警报。它在一个简单的活动中运行良好，但现在当我尝试在我的广播接收器的onResume（）函数中使用它时，它无法创建警报。

有谁知道我的代码有什么问题或有改进建议？


代码如下：

public class SmsReceiver extends BroadcastReceiver
{

private Context c;


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

    c = context;

    Bundle  extras = intent.getExtras();
    String body = "";
    String address = "";



    if ( extras != null )//if-1
    {
        // Get received SMS array
        Object[] smsExtra = (Object[]) extras.get("pdus");


        for ( int i = 0; i < smsExtra.length; ++i )
        {
            SmsMessage sms = SmsMessage.createFromPdu((byte[])smsExtra[i]);

            body = sms.getMessageBody().toString();
            address = sms.getOriginatingAddress();

            boolean a = contactExists(context, address);


            if(a == true) // if-2
            {
                String check = body.split("\n")[0].toLowerCase();


                if(check.equals("reminder")) // if-3
                {   
                    abortBroadcast();

                    String[] parts = body.split("\n");

                    String title = parts[1];
                    String[] time = parts[2].split(":");
                    String[] date = parts[3].split("-");
                    String des = parts[4];                      

                    int hr = Integer.parseInt(time[0]);
                    int min = Integer.parseInt(time[1]);
                    int s = 0;
                    int day = Integer.parseInt(date[0]);
                    int mnth = Integer.parseInt(date[1]);
                    int year = Integer.parseInt(date[2]);


                    addRemInDb add = new addRemInDb();
                    int v = add.insert(title, hr, min, mnth, day, year, des, s);

                    if(v == -1)// if-4
                    {
                        Toast.makeText(context, "Title & Time Must Not Be Same",Toast.LENGTH_SHORT).show();
                    }
                    else
                    {                                               

                        Calendar cal = Calendar.getInstance();

                        //Setting alarm to be triggered on specified date and time
                        cal.set(year, mnth, day, hr, min, s);

                        int requestcode= (int) cal.getTimeInMillis() * (-1);







                        Intent alarmIntent = new Intent(c, AlarmReceiverRem.class);

                        alarmIntent.putExtra("title", title);           
                        alarmIntent.putExtra("note", des);


                        PendingIntent sender = PendingIntent.getService(c, requestcode, alarmIntent,PendingIntent.FLAG_UPDATE_CURRENT | Intent.FILL_IN_DATA);



                        AlarmManager alarmManager = (AlarmManager)c.getSystemService(Context.ALARM_SERVICE);
                        alarmManager.set(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(), sender);                       



                        add.saveRequestCode(requestcode, title);


                     }// end of if-4

                    add.closeDB();

                }// end of if-3

            }//end of if-2


        }//end of forloop


    }//end of if-1



}//end of onReceive
}