alarmManager 中有多个报警

Question

这是一个短信定时器应用程序，所以我需要使用闹钟管理器设置多个闹钟，以便我可以向很多人发送消息。我的代码是：

Phone = phone.getText().toString();
        Message = message.getText().toString();
        phone.setText("");
        message.setText("");
        //Validating if any field empty
        if (Phone.length() >= 10 && Message.length() > 0) {
            Toast.makeText(this.getApplicationContext(), "Your sms will be sent soon", Toast.LENGTH_SHORT).show();
            //Getting Calender Reference
            Calendar cal = Calendar.getInstance();
            int currentApiVersion = android.os.Build.VERSION.SDK_INT;
            if (currentApiVersion > android.os.Build.VERSION_CODES.LOLLIPOP_MR1) {
                cal.set(Calendar.MINUTE, time_picker.getMinute());
                cal.set(Calendar.HOUR_OF_DAY, time_picker.getHour());
            } else {
                //Setting the date and time from the time picker
                cal.set(Calendar.MINUTE, time_picker.getCurrentMinute());
                cal.set(Calendar.HOUR_OF_DAY, time_picker.getCurrentHour());
            }

            int a = (Calendar.getInstance().get(Calendar.SECOND) * 1000);

            myIntent = new Intent(this, MyReceiver.class);
            //Pending Intent for sending the intent afterwards
            pendingIntent = PendingIntent.getBroadcast(this.getApplicationContext(), 0, myIntent, 0);
            alarmManager = (AlarmManager) (this.getSystemService(Context.ALARM_SERVICE));
            alarmManager.set(AlarmManager.RTC, cal.getTimeInMillis() - a, pendingIntent);

所有代码都在一个onclick函数中，所以当用户填写数据并点击发送时应该设置一个警报。我最多只需要 5 个警报。我尝试创建 AlarmManager[] 和 ArrayList<PendingIntent> 但它没有用，只有最新的警报正在设置。

Answer 1

PendingIntents 通常由它们的 requestCode 区分（就像 ID 一样），这可能是导致您的问题的原因，您可以像这样设置 requestCode：

在 onCreate 之外添加：

static int i;

并替换为：

pendingIntent = PendingIntent.getBroadcast(this.getApplicationContext(), 0, myIntent, 0);

有了这个：

pendingIntent = PendingIntent.getBroadcast(this.getApplicationContext(), i++ /*this number is the PendingIntent's requestCode*/, myIntent, 0);

alarmManager 中有多个报警

More than one alarms in alarmManager

java

android

alarmmanager

android-studio