Android - GoogleApiClient - 不连接 fragment 负载

Question

在 Fragment onCreateview 中，连接 GoogleAPIClient，但它不会触发 onConnected 调用，但如果我转到另一个 fragment 并返回，它会触发.

Couldnt find why? any help would be appreciated as i got stuck ?

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {   
    mGoogleApiClient = new GoogleApiClient.Builder(getActivity())
                    .enableAutoManage(getActivity(), GOOGLE_API_CLIENT_ID, this)
                    .addConnectionCallbacks(this)
                    .addApi(LocationServices.API)
                    .addApi(Places.GEO_DATA_API)
                    .addApi(Places.PLACE_DETECTION_API)
                    .build(); 
    mGoogleApiClient.connect();
}

@Override
public void onConnected(Bundle bundle) {
    mPlaceArrayAdapter.setGoogleApiClient(mGoogleApiClient);
    Log.i(LOG_TAG, "Google Places API connected.");
 }

Answer 1

void onCreate (Bundle savedInstanceState) Called to do initial creation of a fragment.

您应该添加此 onCreate 部分

@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

       mGoogleApiClient = new GoogleApiClient.Builder(getActivity())
                    .enableAutoManage(getActivity(), GOOGLE_API_CLIENT_ID, this)
                    .addConnectionCallbacks(this)
                    .addApi(LocationServices.API)
                    .addApi(Places.GEO_DATA_API)
                    .addApi(Places.PLACE_DETECTION_API)
                    .build(); 

        Log.d(TAG, "onCreate");
    }

然后

@Override
    public void onResume() {
        super.onResume();
        mGoogleApiClient .connect();
        Log.d(TAG, "onResume");
    }

这将是检查 onPause() 状态的好方法。

@Override
    public void onPause() {
        super.onPause();
        if (mGoogleApiClient.isConnected())
            mGoogleApiClient.disconnect();
            Log.d(TAG, "onPause");
    }