我正在androidX迁移项目上使用google auth。参见[StackOverflow链接] [1]。我收到以下异常：
2018-12-29 15:02:16.127 8904-8904/com.sumit.movieticketbookingapp E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.sumit.movieticketbookingapp, PID: 8904
java.lang.IncompatibleClassChangeError: Class 'com.google.android.gms.auth.api.signin.internal.SignInHubActivity' does not implement interface 'androidx.lifecycle.LifecycleOwner' in call to 'androidx.lifecycle.Lifecycle androidx.lifecycle.LifecycleOwner.getLifecycle()' (declaration of 'androidx.lifecycle.LiveData' appears in /data/app/com.sumit.movieticketbookingapp-_SKmr46VFm1sF3eifoZ-kQ==/split_lib_dependencies_apk.apk)
at androidx.lifecycle.LiveData.observe(LiveData.java:172)
at androidx.loader.app.LoaderManagerImpl$LoaderInfo.setCallback(LoaderManagerImpl.java:100)
at androidx.loader.app.LoaderManagerImpl.createAndInstallLoader(LoaderManagerImpl.java:400)
at androidx.loader.app.LoaderManagerImpl.initLoader(LoaderManagerImpl.java:421)
at com.google.android.gms.auth.api.signin.internal.SignInHubActivity.zzn(Unknown Source:80)
at com.google.android.gms.auth.api.signin.internal.SignInHubActivity.onActivityResult(Unknown Source:68)
at android.app.Activity.dispatchActivityResult(Activity.java:7454)
at android.app.ActivityThread.deliverResults(ActivityThread.java:4353)
at android.app.ActivityThread.handleSendResult(ActivityThread.java:4402)
at android.app.servertransaction.ActivityResultItem.execute(ActivityResultItem.java:49)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
2018-12-29 15:02:16.128 8904-8904/com.sumit.movieticketbookingapp E/UncaughtException: java.lang.IncompatibleClassChangeError: Class 'com.google.android.gms.auth.api.signin.internal.SignInHubActivity' does not implement interface 'androidx.lifecycle.LifecycleOwner' in call to 'androidx.lifecycle.Lifecycle androidx.lifecycle.LifecycleOwner.getLifecycle()' (declaration of 'androidx.lifecycle.LiveData' appears in /data/app/com.sumit.movieticketbookingapp-_SKmr46VFm1sF3eifoZ-kQ==/split_lib_dependencies_apk.apk)
at androidx.lifecycle.LiveData.observe(LiveData.java:172)
at androidx.loader.app.LoaderManagerImpl$LoaderInfo.setCallback(LoaderManagerImpl.java:100)
at androidx.loader.app.LoaderManagerImpl.createAndInstallLoader(LoaderManagerImpl.java:400)
at androidx.loader.app.LoaderManagerImpl.initLoader(LoaderManagerImpl.java:421)
at com.google.android.gms.auth.api.signin.internal.SignInHubActivity.zzn(Unknown Source:80)
at com.google.android.gms.auth.api.signin.internal.SignInHubActivity.onActivityResult(Unknown Source:68)
at android.app.Activity.dispatchActivityResult(Activity.java:7454)
at android.app.ActivityThread.deliverResults(ActivityThread.java:4353)
at android.app.ActivityThread.handleSendResult(ActivityThread.java:4402)
at android.app.servertransaction.ActivityResultItem.execute(ActivityResultItem.java:49)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
2
我正在使用以下依赖项：
implementation 'androidx.appcompat:appcompat:1.0.2'
implementation 'androidx.constraintlayout:constraintlayout:2.0.0-alpha2'
implementation 'androidx.legacy:legacy-support-v4:1.0.0'
implementation 'androidx.vectordrawable:vectordrawable:1.1.0-alpha01'
implementation 'com.google.android.gms:play-services-auth:16.0.1'
implementation 'com.google.firebase:firebase-crash:16.2.1'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test:runner:1.1.1'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'
compileSdkVersion 28
minSdkVersion 15
targetSdkVersion 28
我的LoginFragment：
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import androidx.lifecycle.Lifecycle;
import androidx.lifecycle.LifecycleOwner;
import androidx.lifecycle.OnLifecycleEvent;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.google.android.gms.auth.api.signin.GoogleSignIn;
import com.google.android.gms.auth.api.signin.GoogleSignInAccount;
import com.google.android.gms.auth.api.signin.GoogleSignInClient;
import com.google.android.gms.auth.api.signin.GoogleSignInOptions;
import com.google.android.gms.common.SignInButton;
import com.google.android.gms.common.api.ApiException;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.sumit.movieticketbookingapp.framework.Constants;
import com.sumit.movieticketbookingapp.framework.OnFragmentInteractionListener;
import com.sumit.movieticketbookingapp.R;
public class FragmentLogin extends Fragment implements LifecycleOwner {
private static final String ARG_PARAM1 = "param1";
GoogleSignInOptions googleSignInOptions;
GoogleSignInClient googleSignInClient;
private static final int RC_SIGN_IN = 9001;
private static final String TAG = "FragmentLogin";
private String mParam1;
public FragmentLogin() {
// Required empty public constructor
}
public static FragmentLogin newInstance(String param1) {
FragmentLogin fragment = new FragmentLogin();
Bundle args = new Bundle();
args.putString(ARG_PARAM1, param1);
fragment.setArguments(args);
return fragment;
}
@OnLifecycleEvent(Lifecycle.Event.ON_CREATE)
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
mParam1 = getArguments().getString(ARG_PARAM1);
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_login, container, false);
}
@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
googleSignInOptions= new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
.requestEmail()
.requestProfile()
.build();
googleSignInClient= GoogleSignIn.getClient(view.getContext(), googleSignInOptions);
GoogleSignInAccount googleSignInAccount= GoogleSignIn.getLastSignedInAccount(view.getContext());
SignInButton signInButton = view.findViewById(R.id.sign_in_button);
signInButton.setSize(SignInButton.SIZE_STANDARD);
signInButton.setColorScheme(SignInButton.COLOR_LIGHT);
signInButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
signIn();
}
});
}
@OnLifecycleEvent(Lifecycle.Event.ON_START)
@Override
public void onStart() {
super.onStart();
GoogleSignInAccount googleSignInAccount= GoogleSignIn.getLastSignedInAccount(getContext());
updateUI(googleSignInAccount);
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == RC_SIGN_IN) {
Task<GoogleSignInAccount> task = GoogleSignIn.getSignedInAccountFromIntent(data);
handleSignInResult(task);
}
}
private void handleSignInResult(Task<GoogleSignInAccount> completedTask) {
try {
GoogleSignInAccount account = completedTask.getResult(ApiException.class);
updateUI(account);
} catch (ApiException e) {
Log.w(TAG, "signInResult:failed code=" + e.getStatusCode());
updateUI(null);
}
}
private void signIn() {
Intent signInIntent = googleSignInClient.getSignInIntent();
startActivityForResult(signInIntent, RC_SIGN_IN);
}
private void signOut() {
googleSignInClient.signOut()
.addOnCompleteListener(getActivity(), new OnCompleteListener<Void>() {
@Override
public void onComplete(@NonNull Task<Void> task) {
updateUI(null);
}
});
}
private void revokeAccess() {
googleSignInClient.revokeAccess()
.addOnCompleteListener(getActivity(), new OnCompleteListener<Void>() {
@Override
public void onComplete(@NonNull Task<Void> task) {
updateUI(null);
}
});
}
private void updateUI(@Nullable GoogleSignInAccount account) {
if (account != null) {
SharedPreferences sharedPreferences=getContext().getSharedPreferences(Constants.LOGIN_PREF,Context.MODE_PRIVATE);
SharedPreferences.Editor editor=sharedPreferences.edit();
editor.putBoolean(Constants.LOGIN,true);
editor.putString(Constants.EMAIL,""+account.getEmail());
editor.putString(Constants.NAME,""+account.getDisplayName());
editor.putString(Constants.PROFILE_PIC,""+account.getPhotoUrl());
editor.apply();
} else {
SharedPreferences sharedPreferences=getContext().getSharedPreferences("login_pref",Context.MODE_PRIVATE);
SharedPreferences.Editor editor=sharedPreferences.edit();
editor.clear();
editor.apply();
}
}
}
出现用户帐户选择屏幕。选择帐户后，应用程序崩溃。在FragmentLogin.java中，SharedPreferences被保存在updateUI（）函数中。之后，使用OnFragmentInteractionListener膨胀下一个片段会崩溃。根据堆栈跟踪，问题似乎出在SignInHubActivity中而不实现侦听器。请解决此问题。