如何超时GPS信号捕获 [英] How to time out GPS signal acquisition

问题描述

我的应用程序使用LocationListener的获得一个位置固定，然后removeUpdates（）每分钟一次（以节省电池）。的问题是，如果一个用户内移动然后它将永远寻找一个信号，燃烧更电池。我不知道是否有人知道一个公共的方法定位管理器中我可以用它来removeUpdates如果没有在15秒内获得了信号。然后，我会检查是否有位置固定，每五分钟，直到用户移动回室外。这是否有意义？也许有更好的方法来超时GPS信号捕获？我已经通过位置管理的公共方法看，但我似乎无法找到一个方法来做到这一点。非常感谢您的帮助！ -dom

My app uses the LocationListener to get one position fix and then removeUpdates() once every minute (to conserve battery). The problem is that if a user moves inside then it will perpetually look for a signal, burning more battery. I was wondering if anyone knows of a public method within Location Manager I can use to removeUpdates if a signal isn't acquired within 15 seconds. I would then check for a position fix every five minutes until the user moves back outdoors. Does this make sense? Maybe there is a better method to timeout GPS signal acquisition? I have looked through the Location Manager public methods but I can't seem to find a way to do it. Thanks so much for your help! -Dom

推荐答案

所以这就是我终于实现了。

So this is what I ended up doing.

这是我加入LocationListener的注意全局变量timertest和loccounter：

This is what i added to the LocationListener note the global variables timertest and loccounter:

public class MyLocationListener implements LocationListener

{
    public void onStart() {
        if (timertest==false) {
            timertest=true;
            serviceHandler = new Handler();
            serviceHandler.postDelayed( new timer(),1000L );
        }
    }
    class timer implements Runnable {
          public void run() {
            ++loccounter;
            if (runtest==true && loccounter>8) {
                dt=200;
                runtest=false;
                stoplistening();
            } else serviceHandler.postDelayed( this, 1000L );
          }
    }
}

我请求位置更新之前启动定时器权利。

I start the timer right before requesting location updates.

public void locupdate(int minTime, float minDistance) {
    mlocManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
    mlocListener = new MyLocationListener();
    if (mlocListener != null && mlocManager != null) {
        mlocManager.removeUpdates(mlocListener);
    }
    loccounter=0;
    ((MyLocationListener) mlocListener).onStart();
    runtest=true;
    mlocManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,
                minTime, minDistance, mlocListener);
}

和位置监听器内的最后一个方法：

and one last method within the location listener:

    public void stoplistening() {
        mlocManager.removeUpdates(mlocListener);
        loccounter=0;
    }

希望这可以帮助别人

Hope this helps someone

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