如何在我们行走时获得实时当前位置更新
如何在我们行走时获得实时当前位置更新
提问于 2017-07-09 18:35:22
我想讨论在我们移动时是否有可能获得实时的当前位置更新，我尝试使用FusedLocationProviderClient每2分钟请求一次当前位置更新
我们可以做什么来实现这一点，实现detectActivity的步行和请求当前位置更新每2分钟或更短的时间？
或者在FusedLocationProviderClient中有位置改变监听器的事情？这样我们就可以监听位置是否有变化，并在应用程序中实时延迟并在文本视图中显示？位置更改侦听器在GoogleMap对象上可用，但不建议现在使用，对吗？
或者我应该坚持FusedLocationProviderClient的请求更新？
事前谢谢
同时告诉我，如果我把手机从一个房间移到另一个房间，延迟时间会有变化吗？
回答 1
Stack Overflow用户
发布于 2017-07-09 18:52:43
您可以使用我创建的这个类：
public class LocationFetcher implements com.google.android.gms.location.LocationListener, GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener {
public GoogleApiClient googleApiClient;
Context context;
private LocationRequest locationRequest;
public LocationFetcher(Context context) {
this.context = context;
googleApiClient = new GoogleApiClient.Builder(context)
.addApi(LocationServices.API)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.build();
locationRequest = new LocationRequest();
}
public void connectGps() {
googleApiClient.connect();
}
public void requestLocationUpdate() {
if (ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions((Activity) context, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, 100);
} else {
locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
//Getting location every 3 seconds. You can change this.
locationRequest.setInterval(3000);
locationRequest.setFastestInterval(3000);
LocationServices.FusedLocationApi.requestLocationUpdates(googleApiClient, locationRequest, this);
}
}
public boolean isConnected() {
return googleApiClient.isConnected();
}
@Override
public void onLocationChanged(Location location) {
//You will get location updates here.
}
@Override
public void onConnected(@Nullable Bundle bundle) {
LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder()
.addLocationRequest(locationRequest);
builder.setAlwaysShow(true);
PendingResult result = LocationServices.SettingsApi.checkLocationSettings(googleApiClient, builder.build());
if (result != null) {
result.setResultCallback(new ResultCallback<LocationSettingsResult>() {
@Override
public void onResult(LocationSettingsResult locationSettingsResult) {
final Status status = locationSettingsResult.getStatus();
switch (status.getStatusCode()) {
case LocationSettingsStatusCodes.SUCCESS:
requestLocationUpdate();
break;
case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
try {
if (status.hasResolution()) {
status.startResolutionForResult((Activity) context, 1000);
}
} catch (IntentSender.SendIntentException e) {
}
break;
case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
break;
}
}
});
}
}
@Override
public void onConnectionSuspended(int i) {
}
@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
DialogPopup.getInstance().showLocationSettingsAlert(context);
}
public void removeLocationUpdates() {
if (googleApiClient.isConnected()){
LocationServices.FusedLocationApi.removeLocationUpdates(googleApiClient, this);
}
}
public void disconnectGps() {
googleApiClient.disconnect();
}
}在您活动的onStart中，调用以下代码：
LocationFetcher locationFetcher = new LocationFetcher(this);
locationFetcher.connectGps();在onStop中使用以下代码：
locationFetcher.disconnectGps();您将在类的onLocationChangedMethod中获得位置更新。
您还必须添加此依赖项：
compile 'com.google.android.gms:play-services-location:10.2.1'希望这能有所帮助。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/44995445
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