我正在开发的Android应用程序出现问题。该应用程序运行一个倒数计时器，并在计时器达到零时发送文本消息。在9秒钟时，该应用程序应该可以获取手机的位置。当计时器达到零时，它将在短信中作为地图链接发送位置（在9秒时收到）。
该应用程序可以运行，但是它发送的GPS位置有时在100米之外。我需要应用程序尽可能精确。我有一个使用android.location框架的版本和一个使用fusedlocationapi的版本。我拥有的android.location版本比fusedlocationapi准确得多，这对我来说很混乱。
真正困扰我的是：如果我运行计时器并获得不正确的位置，我可以打开google maps（它将显示一个非常准确的位置），回到我的应用程序，再次运行计时器，然后我会收到一个精确的位置（类似于Google地图刚刚向我显示的位置）。谷歌地图使用更好的方法来获取我的位置，还是我的代码不好？我以为该应用程序将显示与Google地图相同的位置，但事实并非如此，这让我非常沮丧。任何对此的想法将不胜感激。
这是我的代码，我在其中添加了fusionlocationapi：
/**
* Creating google api client object
* */
protected synchronized void buildGoogleApiClient() {
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API).build();
mGoogleApiClient.connect();
LocationRequest mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(10000);
mLocationRequest.setFastestInterval(5000);
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder()
.addLocationRequest(mLocationRequest);
PendingResult<LocationSettingsResult> result =
LocationServices.SettingsApi.checkLocationSettings(mGoogleApiClient, builder.build());
result.setResultCallback(new ResultCallback<LocationSettingsResult>() {
@Override
public void onResult(LocationSettingsResult locationSettingsResult) {
final Status status = locationSettingsResult.getStatus();
switch (status.getStatusCode()) {
case LocationSettingsStatusCodes.SUCCESS:
// All location settings are satisfied. The client can initialize location requests here
getLocation();
break;
case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
try {
// Show the dialog by calling startResolutionForResult(),
// and check the result in onActivityResult().
status.startResolutionForResult(SafetyAlarmActivity.this, REQUEST_CHECK_SETTINGS);
} catch (IntentSender.SendIntentException e) {
// Ignore the error.
}
break;
case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
break;
}
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
final LocationSettingsStates states = LocationSettingsStates.fromIntent(data);
switch (requestCode) {
case REQUEST_CHECK_SETTINGS:
switch (resultCode) {
case Activity.RESULT_OK:
// All required changes were successfully made
getLocation();
break;
case Activity.RESULT_CANCELED:
// The user was asked to change settings, but chose not to
break;
default:
break;
}
break;
}
}
@Override
public void onConnected(@Nullable Bundle bundle) {
Log.e(TAG, " mGoogleApiClient Connection connected:");
getLocation();
}
@Override
public void onConnectionSuspended(int i) {
mGoogleApiClient.connect();
}
@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
Log.e(TAG, "Connection failed: ConnectionResult.getErrorCode() = "+ connectionResult.getErrorCode());
}
以下是应用在9秒内获取位置信息的代码：
/*
update GPS location
*/
private void updateGPSLocation(long millisUntilFinished) {
Log.e("current time remaining", " time: "+millisUntilFinished/1000);
if(millisUntilFinished/1000==9)
{
Log.e("9 seconds remaining", "get locaiton");
getLocation();
}
}
/*
get location
*/
private void getLocation()
{
try
{
Location lastLocation = LocationServices.FusedLocationApi
.getLastLocation(mGoogleApiClient);
PersistObject.apply(con,AppConstant.LOCATION,lastLocation);
}
catch (SecurityException e)
{
e.printStackTrace();
}
}
这是我的权限：
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />