我收到提示我的片段类,这是状态Android的一个空对象引用
的Java -boolean com.google.android.gms.common.api.GoogleApiClient.isConnected()”。 lang.NullPointerException:尝试在fragment.HomeFragment.onResume
上的空对象引用调用虚拟方法“布尔com.google.android.gms.common.api.GoogleApiClient.isConnected()”这是我的部分代码在HomeFragment
private GoogleApiClient mGoogleApiClient;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
mCurrentLocation = savedInstanceState.getParcelable(KEY_LOCATION);
mCameraPosition =
savedInstanceState.getParcelable(KEY_CAMERA_POSITION);
} buildGoogleApiClient();
}
@Override
public void onResume() {
super.onResume();
if (mGoogleApiClient.isConnected()) {
getDeviceLocation();
}
updateMarkers();
}
private synchronized void buildGoogleApiClient() {
GoogleApiClient.Builder builder = new GoogleApiClient.Builder(getActivity());
mGoogleApiClient = builder.build();
//builder.enableAutoManage(this /* FragmentActivity */, this /* OnConnectionFailedListener */);
builder.addConnectionCallbacks(this);
builder.addApi(LocationServices.API);
builder.addApi(Places.GEO_DATA_API);
builder.addApi(Places.PLACE_DETECTION_API);
builder.build();
createLocationRequest();
}
我还实施
- OnMapReadyCallback
- GoogleApiClient.ConnectionCallbacks
- GoogleApiClient.OnConnectionFailedListener
- LocationListener的
- DirectionFinderListener
有人可以帮助我?
的可能的复制[什么是空指针异常,如何修复它(http://stackoverflow.com/questions/218384/what-is-a-nullpointerexception-and-how-做-I-FIX-IT)。我们只需要两个相关的代码部分:您从未向我们展示过您将“mGoogleApiAgent”分配到哪里。 –
@ M.Prokhorov我编辑了我的文章。 – nao
考虑到你添加的部分,我的链接甚至比它更相关。 –