Google API Client 给出 null onConnected 方法，并获取 LastLocation 也为

Question

Google 客户端实现如下：

if (mGoogleApiClient == null) {
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks((GoogleApiClient.ConnectionCallbacks) this)
.addOnConnectionFailedListener((GoogleApiClient.OnConnectionFailedListener) this)
.addApi(LocationServices.API)
.build();
}

onStart 我正在连接谷歌Api客户端

@Override
protected void onStart() {
super.onStart();
if (mGoogleApiClient != null)
mGoogleApiClient.connect();
}

直到这里一切都很好，但在连接的方法上它返回 null

@Override
public void onConnected(Bundle bundle) {
if (bundle != null)// always null
Log.e(TAG, bundle.toString());
}

获取位置代码在连接到谷歌 api 客户端后单击浮动按钮

//Floating Action Button
floatingActionButton.setOnClickListener(new View.OnClickListener() {
@TargetApi(Build.VERSION_CODES.M)
@Override
public void onClick(View v) {
//To Check Runtime Permission
checkRuntimePermission();
mMap.clear();
mMap.setMyLocationEnabled(true);
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(50);
mLocationRequest.setFastestInterval(10);
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);

mLastLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
if (!Utils.GPS_SERVICE(mContext)) {
Utils.isGPSOnline(mContext);
}
if (mLastLocation != null) {
double lon = mLastLocation.getLongitude();
double lat = mLastLocation.getLatitude();
LatLng latlng = new LatLng(lat, lon);
mMap.addMarker(new MarkerOptions().position(latlng).title("My_location"));
//TO move the marker when user enter any Location
mMap.moveCamera(CameraUpdateFactory.newLatLng(latlng));
mMap.animateCamera(CameraUpdateFactory.zoomTo(15));
}
}
}

Answer 1

尝试

if (mGoogleApiClient == null) {
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks((GoogleApiClient.ConnectionCallbacks) this)
.addOnConnectionFailedListener((GoogleApiClient.OnConnectionFailedListener) this)
.addApi(LocationServices.API)
.enableAutoManage(activityContext, this) // this - for implementing Interface
.build();
}

Answer 2

if (mGoogleApiClient == null)

也删除此条件并在回调中传递此条件

mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();

你也可以看看这个完整的例子 http://www.androidhive.info/2015/02/android-location-api-using-google-play-services/

Answer 3

如果onConnected()被召唤，你GoogleApiClient没关系。

为什么捆绑包为空？

看看这个方法——

public abstract void onConnected (Bundle connectionHint)

connectionHint捆绑包的内容由特定服务定义。如果服务未提供任何内容，则可能为 null。