Question

第一次一切正常，如果您第二次启动，则会看到此错误：

FATAL EXCEPTION: main
Process: ro.vrt.videoplayerstreaming, PID: 23662
java.lang.IllegalStateException: Already managing a GoogleApiClient with id 0
   at com.google.android.gms.common.internal.zzx.zza(Unknown Source)
   at com.google.android.gms.common.api.internal.zzw.zza(Unknown Source)
   at com.google.android.gms.common.api.GoogleApiClient$Builder.zza(Unknown Source)
   at com.google.android.gms.common.api.GoogleApiClient$Builder.zze(Unknown Source)
   at com.google.android.gms.common.api.GoogleApiClient$Builder.build(Unknown Source)
   at ro.vrt.videoplayerstreaming.Login.onCreateView(Login.java:75)
   at android.support.v4.app.Fragment.performCreateView(Fragment.java:1974)
   at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1067)
   at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1252)
   at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:738)
   at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1617)
   at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:517)
   at android.os.Handler.handleCallback(Handler.java:739)
   at android.os.Handler.dispatchMessage(Handler.java:95)
   at android.os.Looper.loop(Looper.java:148)
   at android.app.ActivityThread.main(ActivityThread.java:5849)
   at java.lang.reflect.Method.invoke(Native Method)
   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:763)
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:653)

这是我的代码：

public class Login extends Fragment implements
        GoogleApiClient.OnConnectionFailedListener,
        View.OnClickListener {

    private static final String TAG = "SignInActivity";
    private static final int RC_SIGN_IN = 9001;

    private GoogleApiClient mGoogleApiClient;
    private TextView mStatusTextView;
    private ProgressDialog mProgressDialog;

    private static String url;

    private static View view;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        if (view != null) {
            ViewGroup parent = (ViewGroup) view.getParent();
            if (parent != null)
                parent.removeView(view);
        }
        try {
            view = inflater.inflate(R.layout.activity_login, container, false);

            // Views
            mStatusTextView = (TextView) view.findViewById(R.id.status);

            // Button listeners
            view.findViewById(R.id.sign_in_button).setOnClickListener(this);
            view.findViewById(R.id.sign_out_button).setOnClickListener(this);
            view.findViewById(R.id.disconnect_button).setOnClickListener(this);

            // [START configure_signin]
            // Configure sign-in to request the user's ID, email address, and basic
            // profile. ID and basic profile are included in DEFAULT_SIGN_IN.
            GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
                    .requestEmail()
                    .build();
            // [END configure_signin]

            // [START build_client]
            // Build a GoogleApiClient with access to the Google Sign-In API and the
            // options specified by gso.
            mGoogleApiClient = new GoogleApiClient.Builder(getActivity())
                    .enableAutoManage(getActivity()/* FragmentActivity */, this /* OnConnectionFailedListener */)
                    .addApi(Auth.GOOGLE_SIGN_IN_API, gso)
                    .build();
            // [END build_client]

            // [START customize_button]
            // Customize sign-in button. The sign-in button can be displayed in
            // multiple sizes and color schemes. It can also be contextually
            // rendered based on the requested scopes. For example. a red button may
            // be displayed when Google+ scopes are requested, but a white button
            // may be displayed when only basic profile is requested. Try adding the
            // Scopes.PLUS_LOGIN scope to the GoogleSignInOptions to see the
            // difference.
            SignInButton signInButton = (SignInButton) view.findViewById(R.id.sign_in_button);
            signInButton.setSize(SignInButton.SIZE_STANDARD);
            signInButton.setScopes(gso.getScopeArray());
            // [END customize_button]
        } catch (InflateException e) {
            /* map is already there, just return view as it is */
        }
        super.onCreate(savedInstanceState);

        return view;
    }

    @Override
    public void onStart() {
        super.onStart();

        OptionalPendingResult<GoogleSignInResult> opr = Auth.GoogleSignInApi.silentSignIn(mGoogleApiClient);
        if (opr.isDone()) {
            // If the user's cached credentials are valid, the OptionalPendingResult will be "done"
            // and the GoogleSignInResult will be available instantly.
            Log.d(TAG, "Got cached sign-in");
            GoogleSignInResult result = opr.get();
            handleSignInResult(result);
        } else {
            // If the user has not previously signed in on this device or the sign-in has expired,
            // this asynchronous branch will attempt to sign in the user silently.  Cross-device
            // single sign-on will occur in this branch.
            showProgressDialog();
            opr.setResultCallback(new ResultCallback<GoogleSignInResult>() {
                @Override
                public void onResult(GoogleSignInResult googleSignInResult) {
                    //adaugat de mine sa porneacsa singur cererea de logare
                    signIn();
                    //fin
                    hideProgressDialog();
                    handleSignInResult(googleSignInResult);
                }
            });
        }
    }

    // [START onActivityResult]
    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        // Result returned from launching the Intent from GoogleSignInApi.getSignInIntent(...);
        if (requestCode == RC_SIGN_IN) {
            GoogleSignInResult result = Auth.GoogleSignInApi.getSignInResultFromIntent(data);
            handleSignInResult(result);
        }
    }
    // [END onActivityResult]

    // [START handleSignInResult]
    private void handleSignInResult(GoogleSignInResult result) {
        Log.d(TAG, "handleSignInResult:" + result.isSuccess());
        if (result.isSuccess()) {
            // Signed in successfully, show authenticated UI.
            GoogleSignInAccount acct = result.getSignInAccount();
            mStatusTextView.setText(getString(R.string.signed_in_fmt, acct.getDisplayName() + " Your token " + acct.getId()));

            url = "http://grupovrt.ddns.net:81/index.php?token="+acct.getId();

            updateUI(true);
        } else {
            // Signed out, show unauthenticated UI.
            updateUI(false);
        }
    }
    // [END handleSignInResult]

    // [START signIn]
    private void signIn() {
        Intent signInIntent = Auth.GoogleSignInApi.getSignInIntent(mGoogleApiClient);
        startActivityForResult(signInIntent, RC_SIGN_IN);
    }
    // [END signIn]

    // [START signOut]
    private void signOut() {
        Auth.GoogleSignInApi.signOut(mGoogleApiClient).setResultCallback(
                new ResultCallback<Status>() {
                    @Override
                    public void onResult(Status status) {
                        // [START_EXCLUDE]
                        updateUI(false);
                        // [END_EXCLUDE]
                    }
                });
    }
    // [END signOut]

    // [START revokeAccess]
    private void revokeAccess() {
        Auth.GoogleSignInApi.revokeAccess(mGoogleApiClient).setResultCallback(
                new ResultCallback<Status>() {
                    @Override
                    public void onResult(Status status) {
                        // [START_EXCLUDE]
                        updateUI(false);
                        // [END_EXCLUDE]
                    }
                });
    }
    // [END revokeAccess]

    @Override
    public void onConnectionFailed(ConnectionResult connectionResult) {
        // An unresolvable error has occurred and Google APIs (including Sign-In) will not
        // be available.
        Log.d(TAG, "onConnectionFailed:" + connectionResult);
    }

    private void showProgressDialog() {
        if (mProgressDialog == null) {
            mProgressDialog = new ProgressDialog(getActivity());
            mProgressDialog.setMessage(getString(R.string.loading));
            mProgressDialog.setIndeterminate(true);
        }

        mProgressDialog.show();
    }

    private void hideProgressDialog() {
        if (mProgressDialog != null && mProgressDialog.isShowing()) {
            mProgressDialog.hide();
        }
    }

    private void updateUI(boolean signedIn) {
        if (signedIn) {
            getView().findViewById(R.id.sign_in_button).setVisibility(View.GONE);
            getView().findViewById(R.id.sign_out_and_disconnect).setVisibility(View.VISIBLE);
        } else {
            mStatusTextView.setText(R.string.signed_out);

            getView().findViewById(R.id.sign_in_button).setVisibility(View.VISIBLE);
            getView().findViewById(R.id.sign_out_and_disconnect).setVisibility(View.GONE);
        }
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.sign_in_button:
                signIn();
                break;
            case R.id.sign_out_button:
                signOut();
                break;
            case R.id.disconnect_button:
                revokeAccess();
                break;
        }
    }
}

据我所知，问题出在以下几个方面：

 mGoogleApiClient = new GoogleApiClient.Builder(getActivity())
         .enableAutoManage(getActivity()/* FragmentActivity */, this /* OnConnectionFailedListener */)
         .addApi(Auth.GOOGLE_SIGN_IN_API, gso)
         .build();

我尝试过显式传递0：

的ID

.enableAutoManage(getActivity() /* FragmentActivity */, 0, this /* OnConnectionFailedListener */)

但仍然没有效果。

我错过了什么？

Answer 1

您应该使用stopAutoManage()的{{1}}方法拨打onPause()：

Fragment

Answer 2

您应该在onPause()的{{1}}方法中致电stopAutoManage()，如下所示：

Fragment

Answer 3

避免进一步的问题

@Override
public void onStop() {
    super.onStop();
    if (mGoogleApiClient != null && mGoogleApiClient.isConnected()) {
        mGoogleApiClient.stopAutoManage((Activity) context);
        mGoogleApiClient.disconnect();
    }
}

Answer 4

当我在属于同一Fragment的两个不同Activity中放置登录按钮时，我遇到了类似的问题。

我通过为每个自动管理的GoogleApiClient分配不同的ID来解决此问题。

例如，在Fragment 1中，在创建我的GoogleApiClient对象时，我指定为0 作为ID：

mGoogleApiClient = new GoogleApiClient.Builder(getActivity())
                    .enableAutoManage(getActivity(), 0, this /* OnConnectionFailedListener */)
                    .addApi(Auth.GOOGLE_SIGN_IN_API, gso)
                    .build();

在Fragment 2中，在创建我的GoogleApiClient对象时，我指定了1 作为ID：

mGoogleApiClient = new GoogleApiClient.Builder(getActivity())
                    .enableAutoManage(getActivity(), 1, this /* OnConnectionFailedListener */)
                    .addApi(Auth.GOOGLE_SIGN_IN_API, gso)
                    .build();

Answer 5

official doc for enableAutoManage说：

在任何给定时间，每个ID只允许一个自动管理的客户端。要重用id，必须先在前一个客户端上调用stopAutoManage（FragmentActivity）。

您的代码使用的是enableAutoManage版本而没有clientId参数，因此它默认为0.下面我解释为什么您将为clientId 0提供多个自动管理客户端，这就是上述文档警告的内容。

将您的登录片段附加到FragmentActivity后，它会告诉该活动开始管理GoogleApiClient的新实例。但是，如果FragmentActivity已经在管理另一个GoogleApiClient实例呢？那是你收到错误的时候。

有一些可能的情况可能导致多个GoogleApiClients-per-FragmentActivity情况。

除了Login之外，FragmentActivity还有另一个Fragment，它创建了一个GoogleApiClient，并要求FragmentActivity对其进行管理。
FragmentActivity本身创建了一个GoogleApiClient，并在将Login Fragment附加到FragmentActivity之前开始管理它。
也许您在FragmentTransaction中添加Login Fragment并调用addToBackStack。然后用户点击回来，然后稍后以某种方式重新附加登录片段。在这种情况下，重要的Login Activity方法调用是onCreateView - ＆gt; onDestroyView - ＆gt; onCreateView如下所示：

这是有问题的，因为第二次调用Login.onCreateView会尝试让FragmentActivity管理第二个GoogleApiClient。

如果我是你，我会认真考虑在活动中创建GoogleApiClient而不是任何片段。那么你可以在Activity中完成需要GoogleApiClient的工作，或者在从Activity中获取GoogleApiClient之后继续在Login Fragment中执行此操作：

private GoogleApiClient googleApiClient;

@Override
void onAttach(Activity activity) {
    super.onAttach(activity);
    googleApiClient = activity.getGoogleApiClient();
}

@Override
void onDetach() {
    super.onDetach();
    googleApiClient = null;
}

Answer 6

我建议您在mGoogleApiClient而不是onCreate()中初始化onCreateView()。

作为pointed out by @vlazzle，onCreateView()可以在单个Activity的生命周期内被多次调用。

Answer 7

您应该在片段的stopAutoManage()方法中调用onDestroy()，如下所示：

     @Override
        public void onDestroy() {
             super.onDestroy();
             mGoogleApiClient.stopAutoManage(getActivity());
             mGoogleApiClient.disconnect();
          }

Answer 8

这对我来说可以避免使用Kotlin导致崩溃的问题

private lateinit var googleApiClient: GoogleApiClient

然后验证该变量是否已初始化

 if(!::googleApiClient.isInitialized) {
            googleApiClient = GoogleApiClient.Builder(context)
                    .enableAutoManage(activity, this)
                    .addApi(Auth.GOOGLE_SIGN_IN_API, options)
                    .build()
  }

Answer 9

如果您在“活动”中多次使用Login片段，则选中的答案将不起作用，因为在短时间内顺序添加片段会导致相同的崩溃。 Android有时会混合在Activity中添加的片段的生命周期。

因此，我建议您在单独的抽象活动中为mGoogleApiClient做一名工作人员，并让所有添加Login片段的活动都扩展此活动。

通过在下面创建此抽象活动，我设法摆脱了崩溃，只需将其复制粘贴到您的项目中即可：

abstract class LoginableActivity : BaseActivity() {

    lateinit var googleApiClient: GoogleApiClient

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        val gso = GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
            .requestIdToken(getString(R.string.fcm))
            .requestEmail()
            .build()

        googleApiClient = GoogleApiClient.Builder(this)
            .enableAutoManage(this, 1, null)
            .addApi(Auth.GOOGLE_SIGN_IN_API, gso)
            .build()
    }

    override fun onStart() {
        super.onStart()
        if (!googleApiClient.isConnected && !googleApiClient.isConnecting) {
            googleApiClient.connect()
        }
    }

    override fun onStop() {
        super.onStop()
        if (googleApiClient.isConnected) {
            googleApiClient.stopAutoManage(this)
            googleApiClient.disconnect()
        }
    }
}

将googleApiClient移至LoginableActivity之后，您可以像这样从googleApiClient片段访问Login（让我们用Java来做）：

final Activity = getActivity();
if (activity instanceof LoginableActivity) {
    final GoogleApiClient googleApiClient = ((LoginableActivity) activity).googleApiClient;
}

Answer 10

尝试使用您活动中的mGoogleApiClient。如果您已在活动中声明GoogleApiClient，则无法在您的片段上重新声明。相反，从片段

重用该活动中的变量

mGoogleApiClientInFragment = ((Youractivityclass)getActivity()).mGoogleApiClient;

将YouractivityClass替换为您的片段活动，并确保将您的活动中的mGoogleApiClient字段设置为公开

片段错误：＆＃34;已经管理了ID为0＆＃34的GoogleApiClient;

10 个答案: