大家好,我遇到了一个问题,当我创建一个新的 Google Api 客户端实例并调用方法“.connect”时,我收到一个异常,提示 GoogleApiClient 尚未连接。
主 Activity .java
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
this.googleApiClient = new GoogleApiClient.Builder(this)
.addApi(LocationServices.API)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.build();
//Setup LocationRequest
this.locationRequest = LocationRequest.create()
.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY)
.setInterval(1000 * 10)
.setInterval(1000 * 3);
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
LocationServices.FusedLocationApi.requestLocationUpdates(googleApiClient, locationRequest, this);
}
@Override
public void onStart(){
super.onStart();
this.googleApiClient.connect();
}
@Override
public void onStop(){
super.onStop();
this.googleApiClient.disconnect();
}
异常(exception):
08-27 22:54:04.536 11610-11610/at.ideafactory.spotted E/AndroidRuntime: FATAL EXCEPTION: main
Process: at.ideafactory.spotted, PID: 11610
java.lang.RuntimeException: Unable to start activity ComponentInfo{at.ideafactory.spotted/at.ideafactory.spotted.Activity.Main.MainActivity}: java.lang.IllegalStateException: GoogleApiClient is not connected yet.
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2596)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2653)
at android.app.ActivityThread.access$800(ActivityThread.java:156)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1355)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:157)
at android.app.ActivityThread.main(ActivityThread.java:5872)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:858)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:674)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.IllegalStateException: GoogleApiClient is not connected yet.
at com.google.android.gms.internal.zzpy.zzd(Unknown Source)
at com.google.android.gms.location.internal.zzd.requestLocationUpdates(Unknown Source)
at at.ideafactory.spotted.Activity.Main.MainActivity.onCreate(MainActivity.java:108)
at android.app.Activity.performCreate(Activity.java:5312)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1111)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2552)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2653)
at android.app.ActivityThread.access$800(ActivityThread.java:156)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1355)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:157)
at android.app.ActivityThread.main(ActivityThread.java:5872)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:858)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:674)
at dalvik.system.NativeStart.main(Native Method)
也许任何人都可以帮我解决这个问题。
亲切的问候
最佳答案
这是因为您试图在 onStart 中使用 connect()。在您的 onStart 和 onStop 方法中放置一个空检查,如下所示
@Override
public void onStart(){
super.onStart();
if(this.googleApiClient != null){
this.googleApiClient.connect();
}
}
类似地在 onStop() 中放置一个空检查。
编辑
您应该按如下方式进行。首先在您的 Activity 中实现这些。在 OnConnected 回调中执行以下操作。
public class MainActivity extends AppCompatActivity implements
GoogleApiClient.OnConnectionFailedListener,
GoogleApiClient.ConnectionCallbacks,
LocationListener {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
buildGoogleApiClient();
}
@Override
public void onConnected(@Nullable Bundle bundle) {
Log.d(TAG, "Connection established. Fetching location ..");
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(1000);
mLocationRequest.setFastestInterval(1000);
mLocationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
}
@Override
public void onLocationChanged(Location location) {
Log.d("Lat: " + location.getLatitude() + "Lng : " + location.getLongitude());
LatLng latLng = new LatLng(location.getLatitude(), location.getLongitude());
}
public synchronized void buildGoogleApiClient() {
mGoogleApiClient = new GoogleApiClient.Builder(getBaseContext())
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
mGoogleApiClient.connect();
}
@Override
public void onPause() {
super.onPause();
//stop location updates when Activity is no longer active
if (mGoogleApiClient != null) {
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
}
}
}
关于java - Android Google API 客户端未连接,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/39185723/