onProviderEnabled不工作？ [英] onProviderEnabled not working?

问题描述

有关GPS与放大器之间切换;网络位置提供我只是想在这样的方式，来确定当一个供应商被禁止切换到另一个，但没有被调用我的onProviderEnabled

For switching between GPS & Network location provider i just tried in a way like this, to identify when a provider is disabled switch to another, but my onProviderEnabled is not getting invoked

public void onProviderDisabled(String provider) {
  Toast.makeText(TrackerService.this, "Disabled : " + provider, Toast.LENGTH_LONG).show();
}
public void onProviderEnabled(String provider) {
  Toast.makeText(TrackerService.this, "Enabled : " + provider, Toast.LENGTH_LONG).show();
}

感谢。

推荐答案

定义一个位置监听器类似如下：

Define a location listener like the following:

LocationListener locationListener = new LocationListener() {
            public void onLocationChanged(Location location) {

            }
            public void onProviderDisabled(String provider) {}
            public void onProviderEnabled(String provider) {}
            public void onStatusChanged(String provider, int status, Bundle extras) {}
        };

然后：

LocationManager lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE); 
  lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener);
  lm.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListener);

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