public void onCreate() {
locationListener = new GeoUpdateHandler();
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
try {
gps_enabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
network_enabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
} catch (Exception ex) {
}
if(gps_enabled) {
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, TIME_DURATION, 100, locationListener);
} else if(network_enabled) { // Checking for GSM
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, TIME_DURATION, DISTANCE, locationListener);
}
}
public class GeoUpdateHandler implements LocationListener {
private void getPresentLocation(Location location) {
...
//Fetch the locations
...
}
@Override
public void onProviderDisabled(String provider) { }
@Override
public void onProviderEnabled(String provider) { }
@Override
public void onStatusChanged(String provider, int status, Bundle extras) { }
@Override
public void onLocationChanged(Location location) {
getPresentLocation(location);
}
}
这是我的代码片段,我的问题是,一旦应用程序安装了GPS Switched ON,那么一旦我们关闭GPS,它就不会切换到GSM获取位置,反之亦然。
所以请告诉我一种根据位置提供商的可用性在GPS和GSM之间有效切换的方法。
注意:我的应用是一项服务。
感谢。
编辑:我有一个BroadcastReceiver,这就是为什么我假设一旦GPS ON / OFF发生就会调用onCreate()。
我还尝试检查onLocationChanged(位置位置)中的提供程序可用性。 但它没有帮助。
编辑:我修改了我的onProviderDisabled&像这样的onProviderEnabled, 请告诉我这里做错了什么.. public void onProviderDisabled(String provider) {
locationManager.removeUpdates(locationListener);
if (provider.toLowerCase().equals(LocationManager.GPS_PROVIDER)) {
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, TIME_DURATION, 1, locationListener);
} else {
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, TIME_DURATION, 1, locationListener);
}
}
@Override
public void onProviderEnabled(String provider) {
locationManager.removeUpdates(locationListener);
if (provider.toLowerCase().equals(LocationManager.GPS_PROVIDER)) {
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, TIME_DURATION, 1, locationListener);
} else {
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, TIME_DURATION, 1, locationListener);
}
}
答案 0 :(得分:5)
为此找到了解决方案:
public void onProviderDisabled(String provider) {
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
if (locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener);
} else {
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListener);
}
}
@Override
public void onProviderEnabled(String provider) {
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
if (locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener);
} else {
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListener);
}
}
我错过了什么
locationManager =(LocationManager)getSystemService(Context.LOCATION_SERVICE);
在onProviderEnabled()和onProviderDisabled()。
由于
答案 1 :(得分:0)
看起来您只是在onCreate()方法中请求位置更新。一旦提供商改变,您必须从新提供商请求更新,不是吗?
这是Android博客上关于位置的帖子,它也涵盖了监控提供商的变化:
http://android-developers.blogspot.com/2011/06/deep-dive-into-location.html