我的应用程序的一部分需要位置服务,因此如果当前关闭位置,应用程序将提示用户启用它.下面是我正在做它:(也见于这个堆栈溢出的答案)
LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder()
.addLocationRequest(mLocationRequest);
builder.setAlwaysShow(true);
PendingResult<LocationSettingsResult> result = LocationServices.SettingsApi.checkLocationSettings(mGoogleApiClient, builder.build());
result.setResultCallback(new ResultCallback<LocationSettingsResult>()
{
@Override
public void onResult(LocationSettingsResult result)
{
final Status status = result.getStatus();
final LocationSettingsStates = result.getLocationSettingsStates();
switch (status.getStatusCode())
{
case LocationSettingsStatusCodes.SUCCESS:
// All location settings are satisfied. The client can initialize location
// requests here.
...
Log.d("onResult", "SUCCESS");
break;
case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
// Location settings are not satisfied. But could be fixed by showing the user
// a dialog.
Log.d("onResult", "RESOLUTION_REQUIRED");
try …我想定期(比如每2分钟)当前位置更新为这个我下面的官方文档,我写了这个代码,但它不会给当前的位置即使在我传递requestLocationUpdates LocationRequest对象指定每两分钟更新( ),这里是代码:
public class MapsActivity extends FragmentActivity implements OnMapReadyCallback,
GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener{
private FusedLocationProviderClient FusedLocationClient;
private GoogleApiClient mGoogleApiClient;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
if (mGoogleApiClient == null) {
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
}
SupportMapFragment map =
getSupportFragmentManager().findFragmentById(R.id.map));
map.getMapAsync(this);
FusedLocationClient LocationServices.getFusedLocationProviderClient(this);
}
@Override
public void onConnected(Bundle bundle) {
FusedLocationClient.getLastLocation()
.addOnSuccessListener(this, new OnSuccessListener<Location>() {
@Override
public void onSuccess(Location location) {
if (location != null) {
Log.i("MainActivity ", "" + location.getLongitude())
}
}
});
FusedLocationClient = …java android google-maps-android-api-2 android-fusedlocation
我想在地图上显示我的位置并放大它.我想使用GoolgeAPIClient.地图渲染和指针创建但位置错误.我觉得即使在调用GoogleAPIClient的onConnected方法之前,也会先执行onMapReady.请帮助这是我的代码.
import android.location.Location;
import android.support.v4.app.FragmentActivity;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;
import android.widget.Toast;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.location.LocationServices;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.CameraPosition;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.LatLngBounds;
import com.google.android.gms.maps.model.MarkerOptions;
public class MapsActivity extends FragmentActivity implements OnMapReadyCallback, GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener {
protected static final String TAG = "MainActivity";
/**
* Provides the entry point to Google Play services.
*/
protected GoogleApiClient mGoogleApiClient;
/**
* Represents a geographical location.
*/
protected Location mLastLocation;
protected String mLatitudeLabel;
protected …我正在尝试按照Android 接收位置更新教程.示例代码在Github上.
一切都在工作,除了这一行:
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
这是一个cannot resolve method requestLocationUpdates错误.我在文档中没有看到任何内容,但我对Android很新,所以可能会遗漏一些东西:).
这是完整的代码.我出错的任何想法？谢谢!
package location.test.example.com;
import android.app.Fragment;
import android.content.Intent;
import android.location.Location;
import android.location.LocationListener;
import android.os.Bundle;
import android.support.v4.app.NavUtils;
import android.text.format.DateFormat;
import android.util.Log;
import android.view.ActionMode;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationServices;
import java.util.ArrayList;
import java.util.Date;
public class LocationFragment extends Fragment implements
GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, LocationListener {
protected GoogleApiClient …我使用LocationManager跟踪用户当前位置.现在,在将位置管理器更改为FusedLocation API之后,即使在设置之后也不会显示蓝点和圆圈map.setMyLocationEnabled(true).我可以在地图片段的右上角看到当前位置图标,但点击它不会做任何事情.我将我的代码恢复到LocationManager现在我能够看到指向我当前位置的蓝点.使用Fused Location API可能有什么问题.
在我的片段中,我正在尝试使用TMDB的开放电影数据库来获取有关"正在播放"电影的详细信息.
如果我使用RequestFuture.get(time,TimeUnit)方法来执行此排球请求,我总是会收到超时错误.如果我在Safari中手动测试相同的Url,我会立即得到结果.
我知道的:
1.)它不是任何JSON解析错误.(程序甚至没有进入解析步骤)
2.)AVD没有互联网问题.(后面解释的原因).
3.)我的凌空单件类或我的请求队列不是问题.(后来解释的原因).
所以我认为我在排球/请求未来的使用方面犯了另一个错误.
片段代码如下:
public class BoxOffice extends android.support.v4.app.Fragment {
private VolleySingleton volleySingleton;
private RequestQueue requestQueue;
private ImageLoader imageLoader;
private ArrayList<MyMovie> movieList;
private MyUriBuilder mBuilder;
public BoxOffice() {
// Required empty public constructor
volleySingleton = VolleySingleton.getInstance();
requestQueue = volleySingleton.getRequestQueue();
mBuilder = new MyUriBuilder();
movieList = new ArrayList<>();
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
mParam1 = getArguments().getString(ARG_PARAM1);
mParam2 = getArguments().getString(ARG_PARAM2);
}
StepA();
}
public void StepA() {
String url = …我在我的Android应用中使用谷歌地图.我需要将地图重新定位到客户端的当前位置.我使用了以下声明 -
map.setmylocationenabled(true);
这会在右上方显示一个按钮,但单击该按钮不起作用.
按钮单击侦听器:
mMap.setOnMyLocationButtonClickListener(new GoogleMap.OnMyLocationButtonClickListener() {
@Override
public boolean onMyLocationButtonClick() {
mMap.addMarker(new MarkerOptions().position(myLatLng).title("My Location"));
mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(myLatLng, zoomLevel));
return false;
}
});
我正试图在我的应用程序内的谷歌地图上显示用户的当前位置,但我不想在用户移动时不断更新位置.他的初始位置应该被记录并显示,直到他关闭应用程序.我为此编写了以下代码:
private GoogleMap mMap;
protected GoogleApiClient mGoogleApiClient;
Location mLastLocation;
double lat =0, lng=0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_map);
buildGoogleApiClient();
// Obtain the SupportMapFragment and get notified when the map is ready to be used.
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
}
private void buildGoogleApiClient() {
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
}
/**
* Manipulates the map once available.
* This callback is triggered when the map is ready to be used.
* This …我目前正在制作一个带有谷歌地图的片段.一旦用户访问该片段,他的地图应该缩放并关注他的位置.但是,它显示的是世界地图而不是附近的位置(靠近用户):
@SuppressWarnings("unused")
public class DeferredMapFragment extends MapFragment implements GoogleMap.OnCameraChangeListener, OnMapReadyCallback, GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener,
LocationListener {
private static final String TAG = "DeferredMapFragment";
private Deque<Runnable> pendingActions;
private AbstractMap<Marker, Object> tags;
private GoogleMap map;
private LocationRequest mLocationRequest;
private GoogleApiClient mGoogleApiClient;
private Location mLastLocation;
private Marker marker;
private GoogleMap.OnCameraChangeListener cameraChangeListener = null;
private boolean isMapReady = false;
/*
* INTERNALS
*/
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
if (getMap() != null) {
map = getMap();
getMap().setOnCameraChangeListener(this);
}
}
@Override
public void onCameraChange(CameraPosition cameraPosition) …我找到了一些方法来做到这一点,但已被弃用或无效.我想从设备获得当前的经度和经度.
以下是我获取当前位置的getMyLocation()方法,但不推荐使用 GoogleMap 方法:
void getCurrentLocation()
{
Location myLocation = map.getMyLocation();
if(myLocation!=null)
{
double dLatitude = myLocation.getLatitude();
double dLongitude = myLocation.getLongitude();
map.addMarker(new MarkerOptions().position(new LatLng(dLatitude, dLongitude))
.title("My Location").icon(BitmapDescriptorFactory
.defaultMarker(BitmapDescriptorFactory.HUE_RED)));
map.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(dLatitude, dLongitude), 8));
}
else
{
Toast.makeText(this, "Unable to fetch the current location", Toast.LENGTH_SHORT).show();
}
}