Question

我正在尝试创建一个可识别位置的商家搜索应用。要做到这一点，我使用Google Places Api，特别是Places.GEO_DATA_API和LocationServices.API。这个想法是用户可以使用他们当前的位置或使用autoComplete搜索来输入地址。我的问题是，我认为两个api在调用onConnected()时混淆了，因为我一直收到这个错误：

E/AndroidRuntime: FATAL EXCEPTION: main
                  Process: edu.depaul.csc472.coffeeshoplocator, PID: 9420
                  java.lang.IllegalStateException: GoogleApiClient is not connected yet.
                      at com.google.android.gms.internal.zzrb.zzb(Unknown Source)
                      at com.google.android.gms.internal.zzrf.zzb(Unknown Source)
                      at com.google.android.gms.internal.zzrd.zzb(Unknown Source)
                      at com.google.android.gms.location.internal.zzd.requestLocationUpdates(Unknown Source)
                      at edu.depaul.csc472.coffeeshoplocator.MainActivity.startLocationUpdates(MainActivity.java:233)
                      at edu.depaul.csc472.coffeeshoplocator.MainActivity.getLocation(MainActivity.java:241)
                      at edu.depaul.csc472.coffeeshoplocator.MainActivity.onConnected(MainActivity.java:263)
                      at com.google.android.gms.common.internal.zzk.zzp(Unknown Source)
                      at com.google.android.gms.internal.zzrd.zzn(Unknown Source)
                      at com.google.android.gms.internal.zzrb.zzass(Unknown Source)
                      at com.google.android.gms.internal.zzrb.onConnected(Unknown Source)
                      at com.google.android.gms.internal.zzrf.onConnected(Unknown Source)
                      at com.google.android.gms.internal.zzqr.onConnected(Unknown Source)
                      at com.google.android.gms.common.internal.zzj$1.onConnected(Unknown Source)
                      at com.google.android.gms.common.internal.zze$zzj.zzavj(Unknown Source)
                      at com.google.android.gms.common.internal.zze$zza.zzc(Unknown Source)
                      at com.google.android.gms.common.internal.zze$zza.zzv(Unknown Source)
                      at com.google.android.gms.common.internal.zze$zze.zzavl(Unknown Source)
                      at com.google.android.gms.common.internal.zze$zzd.handleMessage(Unknown Source)
                      at android.os.Handler.dispatchMessage(Handler.java:102)
                      at android.os.Looper.loop(Looper.java:154)
                      at android.app.ActivityThread.main(ActivityThread.java:6077)
                      at java.lang.reflect.Method.invoke(Native Method)
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)

有时只会发生。我已成功运行该程序，除了此崩溃外没有任何意外行为。

构建apis的代码如下：

protected synchronized void buildGoogleApiClient(){
        mGoogleApiLocation = new GoogleApiClient.Builder(this)
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .addApi(LocationServices.API)
                .build();
         mGoogleApiAutoComplete = new GoogleApiClient.Builder(this)
                 .addApi(Places.GEO_DATA_API)
                 .enableAutoManage(this,GOOGLE_API_CLIENT_ID,this)
                 .addConnectionCallbacks(this)
                 .build();
    }

这是我的onConnected()方法，它请求从用户访问精确位置的权限，然后尝试获取用户的位置：

@Override
    public void onConnected(Bundle bundle) {
        requestForSpecificPermission();
        getLocation();
        placeArrayAdapter.setGoogleApiClient(mGoogleApiAutoComplete);

    }

...和我的getLocation()方法：

private void getLocation(){
        try {
            location = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiLocation);
            if (location == null) {
                LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiLocation, locationRequest, this);
            }
            else{
                handleNewLocation(location);
            }
        }catch (SecurityException e){
            Toast.makeText(getApplicationContext(),
                    "You don't have permission!", Toast.LENGTH_LONG)
                    .show();
        }
    }

我的好奇心是：如果从我的理解中你必须连接到onConnected()和两个：为什么这只会在某些时候发生，我怎么会得到这个错误。是否允许首先使用多个客户端，或者如果不允许在同一活动中使用两种不同的技术（apis）？

Answer 1

请勿在{{1}} / implements ConnectionCallbacks中Activity尝试以下操作：

Fragment

然后改变你的方法：

GoogleApiClient.ConnectionCallbacks mGoogleApiLocationCallback = new GoogleApiClient.ConnectionCallbacks() {
        @Override
        public void onConnected(@Nullable Bundle bundle) {

        }

        @Override
        public void onConnectionSuspended(int i) {

        }
    };

    GoogleApiClient.ConnectionCallbacks mGoogleApiAutoCompleteCallback = new GoogleApiClient.ConnectionCallbacks() {
        @Override
        public void onConnected(@Nullable Bundle bundle) {

        }

        @Override
        public void onConnectionSuspended(int i) {

        }
    };

请务必从protected synchronized void buildGoogleApiClient(){ mGoogleApiLocation = new GoogleApiClient.Builder(context) .addConnectionCallbacks(mGoogleApiLocationCallback) .addOnConnectionFailedListener(this) .addApi(LocationServices.API) .build(); mGoogleApiAutoComplete = new GoogleApiClient.Builder(context) .addConnectionCallbacks(mGoogleApiAutoCompleteCallback) .addApi(Places.GEO_DATA_API) .enableAutoManage(this,GOOGLE_API_CLIENT_ID,this) .build(); } / implements GoogleApiClient.ConnectionCallbacks

中移除Activity

是否可以在一个活动中拥有多个GoogleApiClients？

1 个答案: