发送短信后台时电源按钮为pressed [英] Sends SMS in Background when Power Button is pressed

问题描述

有没有办法告诉我的应用程序做一些事情，而它的在后台运行？我尝试做的是发送短信时，我preSS的电源按钮。
这是我写的，它的作品，而现在我是在应用程序中：

 公共布尔的onkeydown（INT键code，KeyEvent的事件）{
    startService（新意图（这一点，BackgroundService.class））;
        如果（event.getKey code（）== KeyEvent.KEY code_POWER）{
            SmsManager smsManager = SmsManager.getDefault（）;
            smsManager.sendTextMessage（PHONENO，NULL，非物质文化遗产brauche Hilfe！海尔北京时间炒面aktueller Standort，kannst杜MIR helfen kommen？+\\ n+http://maps.google.com/?q=+纬度+ ，+ LON，NULL，NULL）;
            返回true;
        }
    返回super.onKeyDown（键code，事件）;
}
 

解决方案

当你的应用程序是不可见的不是在后台运行。这是处于休眠状态等待恢复或释放。有，而它在这个状态下，它明确地执行一些操作，你需要设置将从您的应用程序独立运行后台服务。要开始，看看这个谷歌指南： http://developer.android.com/guide /components/services.html

Is there a way to tell my app to do something while it's running in the Background? What i try to do is to send a sms when i press the Power Button. This is what i wrote and it works currently while i'm inside the app:

  public boolean onKeyDown(int keyCode, KeyEvent event) {
    startService(new Intent(this, BackgroundService.class));
        if (event.getKeyCode() == KeyEvent.KEYCODE_POWER) {
            SmsManager smsManager = SmsManager.getDefault();
            smsManager.sendTextMessage(phoneNo, null, "Ich brauche Hilfe! Hier ist mein aktueller Standort, kannst du mir helfen kommen?" + "\n" + "http://maps.google.com/?q=" + lat + "," + lon, null, null);
            return true;
        }
    return super.onKeyDown(keyCode, event);
}

解决方案

When your app is not visible it isn't "running in the background." It's in a dormant state waiting to be restored or released. To have it explicitly perform some operation while it is in this state, you need to set up a background service that will run independently from your app. To get started, check out this Google guide: http://developer.android.com/guide/components/services.html

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