1

我正在实现我的应用程序，它可以为用户获取位置。但是，我发现 LocationManager 并不总是适用于所有设备，你知道，有很多不同的 Android 设备。然后我正在考虑获取原始 gps 数据并将其发送到位置网络服务以获取位置会更好。

在环顾四周之后，我没有得到一个强大的解决方案，有什么想法吗？我真的很好奇市场上的一些 GPS 应用程序如何在每台设备上运行。

代码片段

LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
MyLocationListener locationListener = new MyLocationListener(locationManager);
locationListener.start();

听众，

public class MyLocationListener implements LocationListener{

public static int PERMISSION_DENIED = 1;
public static int POSITION_UNAVAILABLE = 2;
public static int TIMEOUT = 3;

protected LocationManager locationManager;
protected boolean running = false;
public MyLocationListener(LocationManager locationManager )
{
    this.locationManager = locationManager;
}


public void onProviderDisabled(String provider) {
    Log.d(TAG, "Location provider '" + provider + "' disabled.");
}

public void onProviderEnabled(String provider) {
    Log.d(TAG, "Location provider "+ provider + " has been enabled");
}

public void onStatusChanged(String provider, int status, Bundle extras) {
    Log.d(TAG, "The status of the provider " + provider + " has changed");
    if (status == 0) {
        Log.d(TAG, provider + " is OUT OF SERVICE");
    }
    else if (status == 1) {
        Log.d(TAG, provider + " is TEMPORARILY_UNAVAILABLE");
    }
    else {
        Log.d(TAG, provider + " is AVAILABLE");
    }
}

public void onLocationChanged(Location location) {
    Log.d(TAG, "The location has been updated!");
    Log.d(TAG, "latitude = "+location.getLatitude()+" altitude = "+location.getAltitude());
}

public void start() {

    if (!this.running) {
        if (this.locationManager.getProvider(LocationManager.GPS_PROVIDER) != null) {
            this.running = true;
            Log.d(TAG,"using gps");
            this.locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 600000, 0, this);
        } else {
              Log.d(TAG, "GPS provider is not available.");
        }
    }

    if (!this.running) {
        if (this.locationManager.getProvider(LocationManager.NETWORK_PROVIDER) != null) {
            this.running = true;
            Log.d(TAG,"using network");
            this.locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 600000, 10, this);
        } else {
           Log.d(TAG, "Network provider is not available.");
        }
    }
}

private void stop() {
    if (this.running) {
        this.locationManager.removeUpdates(this);
        this.running = false;
    }
}

/**
 * Destroy listener.
 */
public void destroy() {
    this.stop();
}

有时， onStatusChanged 什么也得不到。

4

1 回答 1

0

LocationManager是唯一的方法。所有设备都有 Android API - 并非所有设备都有内部 GPS 模块。但是您也可以使用它来检查它LocationManager。

于 2012-09-10T08:16:31.447 回答