在我的应用程序中,用户可以设置一定的时间,我希望当时间到达应用程序当前正在运行的设置时间(基本上是警报)时,屏幕上会显示通知。
我将如何做到这一点?
答案 0 :(得分:2)
没有用到很长的答案,你显然没有多搜索......
http://developer.android.com/reference/android/app/AlarmManager.html
答案 1 :(得分:2)
立即检查,我已更新代码。
这是CountDownTimer的代码。 当时间完成时,它会发送通知。 您可以在服务中或在正常活动中使用它。
public String ns = Context.NOTIFICATION_SERVICE;
public NotificationManager mNotificationManager;
Notification notification;
PendingIntent contentIntent;
Intent notificationIntent;
public class Main extends Activity{
private final long startTime = 50000;
private final long interval = 1000;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
int time=Integer.parseInt(editText.getText().toString());
time=time*1000;
startTime = time;
// place this code on button listener if you want.
countDownTimer = new MyTimer(startTime, interval);
}
}
public class MyTimer extends CountDownTimer
{
public MyTimer(long startTime, long interval)
{
super(startTime, interval);
}
@Override
public void onFinish()
{
mNotificationManager = (NotificationManager) getSystemService(ns);
notificationIntent = new Intent(this, MyActivity.class);
notificationIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
contentIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);
notification = new Notification(R.drawable.icon,"Time up..", System.currentTimeMillis());
notification.setLatestEventInfo(this, "CallingaCab", "YOUR TIME COMPLETED", contentIntent);
mNotificationManager.notify(0, notification);
startActivity(notificationIntent);
}
@Override
public void onTick(long millisUntilFinished)
{
//Perform what do you want on each tick.
}
}
}
答案 2 :(得分:0)
请创建服务以扩展服务在后台运行的服务类,并检查您想要的内容。 here you can find service example