Question

我正在尝试使用Smart Location Library获取定期位置更新。但是当启动进程时它会触发侦听器，然后就没有进一步的更新。这是我使用的代码

public void startTracking(View v)    {
    provider = new LocationGooglePlayServicesWithFallbackProvider(this);


    Log.i("Tag","Start Tracking");
    SmartLocation smartLocation = new SmartLocation.Builder(this)
            .logging(true)
            .build();

    smartLocation.location(provider)
            .config(LocationParams.BEST_EFFORT)
            .start(this);
    smartLocation.activity().start(this);
}

public void stopTracking(View v) {
    Log.i("Tag","Stop Tracking");
    SmartLocation.with(this).location().stop();
    SmartLocation.with(this).activity().stop();

}

@Override
public void onActivityUpdated(DetectedActivity detectedActivity)
{
    Log.i("Tag","ActivityUpdate : "+detectedActivity.toString());
}

@Override
public void onLocationUpdated(Location location)
{
    Log.i("Tag","LocationUpdate : "+location.getLatitude()+","+location.getLongitude());
}

这是我得到的Logcat输出

 01-27 14:09:01.791 3038-3038/com.angulusits.smartlocationtest I/Tag:
 Start Tracking 

 01-27 14:09:01.879 3038-3038/com.angulusits.smartlocationtest I/Tag:
 ActivityUpdate : DetectedActivity [type=STILL, confidence=100] 

 01-27 14:09:02.017 3038-3038/com.angulusits.smartlocationtest I/Tag:
 LocationUpdate : <some-value>,<some-value>

一旦按下startButton，就会给出这个，然后再没有值。

我检查了Library for BEST_EFFORT值的代码：

public static final LocationParams BEST_EFFORT = new Builder().setAccuracy(LocationAccuracy.MEDIUM).setDistance(150).setInterval(2500).build();

所以我希望每个 2500毫秒的更新，即使设备没有移动。如果有人能指出我正确的方向，我将不胜感激。

Answer 1

创建位置监听器时需要说continuous()。请尝试下面的代码段，

private void startLocationListener() {

    long mLocTrackingInterval = 1000 * 5; // 5 sec
    float trackingDistance = 0;
    LocationAccuracy trackingAccuracy = LocationAccuracy.HIGH;

    LocationParams.Builder builder = new LocationParams.Builder()
            .setAccuracy(trackingAccuracy)
            .setDistance(trackingDistance)
            .setInterval(mLocTrackingInterval);

    SmartLocation.with(this)
            .location()
            .continuous()
            .config(builder.build())
            .start(new OnLocationUpdatedListener() {
                @Override
                public void onLocationUpdated(Location location) {
                    processLocation(location);
                }
            });
}

迟到的回复！无论如何，这会对某人有所帮助。

Answer 2

使用GoogleFuse Api要好得多。Here是这个Api的完整文档。它比使用Github库进行位置跟踪要好得多。

使用智能位置库的问题

2 个答案: