我开发了一款用于查找设备当前位置的应用程序。我使用 Fused Location API 获取当前位置。
我遇到了一个非常奇怪的问题,在某些设备上,我无法获得准确的当前位置,直到我打开内置的谷歌地图,一旦我打开谷歌地图并回到我的应用程序,应用程序就会返回准确的位置。
这是我的位置请求。
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(UPDATE_INTERVAL);
mLocationRequest.setFastestInterval(FATEST_INTERVAL);
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
mLocationRequest.setSmallestDisplacement(DISPLACEMENT); // 10 meters
谁能告诉我哪里出了问题?非常感谢您的帮助。
最佳答案
所以 Waze 和我们过去使用 FusedLocation 并面临很多问题。 API 已损坏。有些设备不能正确执行它。融合了很多继电器的 Activity 识别无法正常工作并正确识别员工。 我们结束,切换回位置管理器 API。
这里是 fragment :
初始化位置管理器并开始请求不同线程上的更新。 我亲自为每个提供商注册单独的听众
if (mLocationManager == null) {
LOGGER.info("Location track,start called first time. Creating Location Manager");
mLocationManager = (LocationManager) mContextWeakReference.get()
.getSystemService(Context.LOCATION_SERVICE);
mLocationHandlerThread
= new HandlerThread("LocationThread", Thread.NORM_PRIORITY);
mLocationHandlerThread.start();
// Now get the Looper from the HandlerThread
// NOTE: This call will block until the HandlerThread gets control and initializes its Looper
Looper looper = mLocationHandlerThread.getLooper();
Location networkLastKnownLocation = null;
Location gpsLastKnownLocation = null;
mGpsLocationListener = new GpsLocationListener();
mNetworkLocationListener = new NetworkLocationListener();
// Register the listener with the Location Manager to receive location updates
if (mLocationManager.getAllProviders().contains(LocationManager.GPS_PROVIDER)) {
mLocationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,
LOCATION_REQUEST_INTERVAL_MILLIS, SMALLEST_DISPLACEMENT_METERS,
mGpsLocationListener,
looper);
gpsLastKnownLocation = mLocationManager
.getLastKnownLocation(LocationManager.GPS_PROVIDER);
} else {
setGpsProviderAvailable(false);
}
if (mLocationManager.getAllProviders().contains(LocationManager.NETWORK_PROVIDER)) {
networkLastKnownLocation = mLocationManager
.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
mLocationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER,
LOCATION_REQUEST_INTERVAL_MILLIS, SMALLEST_DISPLACEMENT_METERS,
mNetworkLocationListener,
looper);
}
setLastKnownLocationDifferentProviders(gpsLastKnownLocation,
networkLastKnownLocation);
}
听众是:
public class GpsLocationListener implements LocationListener {
@Override
public void onLocationChanged(Location location) {
LOGGER.info("Location track ,onLocationChanged location={}", location);
switch (location.getProvider()) {
case LocationManager.GPS_PROVIDER:
if (mLocationManager != null) {
mLocationManager.removeUpdates(mNetworkLocationListener);
}
break;
}
setLastKnownLocation(location);
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
LOGGER.info("onStatusChanged: {}, status: {}", provider, status);
}
@Override
public void onProviderEnabled(String provider) {
LOGGER.info("onProviderEnabled: " + provider);
if (provider.equals(LocationManager.GPS_PROVIDER)) {
setGpsProviderAvailable(true);
}
}
@Override
public void onProviderDisabled(String provider) {
LOGGER.info("onProviderDisabled: " + provider);
if (provider.equals(LocationManager.GPS_PROVIDER)) {
setGpsProviderAvailable(false);
}
}
}
public class NetworkLocationListener implements LocationListener {
@Override
public void onLocationChanged(Location location) {
LOGGER.info("Location track ,onLocationChanged location={}", location);
switch (location.getProvider()) {
case LocationManager.NETWORK_PROVIDER:
setLastKnownLocation(location);
break;
}
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
LOGGER.info("onStatusChanged: {}, status: {}", provider, status);
}
@Override
public void onProviderEnabled(String provider) {
LOGGER.info("onProviderEnabled: " + provider);
if (provider.equals(LocationManager.GPS_PROVIDER)) {
setGpsProviderAvailable(true);
}
}
@Override
public void onProviderDisabled(String provider) {
LOGGER.info("onProviderDisabled: " + provider);
if (provider.equals(LocationManager.GPS_PROVIDER)) {
setGpsProviderAvailable(false);
}
}
}
不要忘记取消注册并停止所有线程:)
关于android - 应用程序获取错误位置,直到打开内置的 Google map 应用程序,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/35456254/