如何开始在Android立即报警 [英] How to start an immediate alarm on Android

问题描述

我试图写一个code有事时激活报警。我想过使用默认的报警及消防它，当我考虑，但首先我不知道如何来触发报警或处理。第二：我不知道是否有火灾立即报警，听起来并告诉用户一个消息的最简单的方法

I'm trying to write a code that activates an alarm when something happens. I've thought on using the default alarm and fire it when I consider it, but first: I don't know how to fire the alarm or handle it. Second: I don't know if there is an easiest way to fire an immediate alarm that sounds and tells the user a message.

例如：

（真）
   火灾声音报警，提示信息提醒用户
其他
   其他一些code

if (true) Fire an audible alarm with a message to advise the user else Some other code

感谢您的帮助。

推荐答案

AlarmManager：

AlarmManager:

public void startAlert() {
Intent intent = new Intent(this, MyBroadcastReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(
        this.getApplicationContext(), 234324243, intent, 0);
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis()
        + (i * 1000), pendingIntent);
Toast.makeText(this, "Alarm set in " + i + " seconds",
        Toast.LENGTH_LONG).show();
}

广播接收器：

    public class MyBroadcastReceiver extends BroadcastReceiver {
    @Override
  public void onReceive(Context context, Intent intent) {
  Toast.makeText(context, "Don't panik but your time is up!!!!.",
        Toast.LENGTH_LONG).show();
// Vibrate the mobile phone
  Vibrator vibrator = (Vibrator)    

        context.getSystemService(Context.VIBRATOR_SERVICE);
vibrator.vibrate(2000);
}


 }

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