我正在使用Google Api Clint登录Google帐户。我的代码工作正常，但是当我尝试从片段Logout.java注销时，它无法正常工作，请参阅下面的登录活动代码。
GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
.requestEmail()
.build();
mGoogleApiClient = new GoogleApiClient.Builder(this)
.enableAutoManage(this, this)
.addApi(Auth.GOOGLE_SIGN_IN_API, gso)
.build();
// Customizing G+ button
btnSignIn.setSize(SignInButton.SIZE_STANDARD);
btnSignIn.setScopes(gso.getScopeArray());
其余的代码
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == RC_SIGN_IN) {
GoogleSignInResult result = Auth.GoogleSignInApi.getSignInResultFromIntent(data);
handleSignInResult(result);
}
}
private void signIn() {
Intent signInIntent = Auth.GoogleSignInApi.getSignInIntent(mGoogleApiClient);
startActivityForResult(signInIntent, RC_SIGN_IN);
}
private void signOut() {
Auth.GoogleSignInApi.signOut(mGoogleApiClient).setResultCallback(
new ResultCallback<Status>() {
@Override
public void onResult(Status status) {
updateUI(false);
}
});
}
private void revokeAccess() {
Auth.GoogleSignInApi.revokeAccess(mGoogleApiClient).setResultCallback(
new ResultCallback<Status>() {
@Override
public void onResult(Status status) {
updateUI(false);
}
});
}
private void handleSignInResult(GoogleSignInResult result) {
Log.d(TAG, "handleSignInResult:" + result.isSuccess());
if (result.isSuccess()) {
// Signed in successfully, show authenticated UI.
GoogleSignInAccount acct = result.getSignInAccount();
Log.e(TAG, "display name: " + acct.getDisplayName());
String personName;
//String personPhotoUrl = acct.getPhotoUrl().toString();
String email;
String gid;
String location = "Location Not Set";
String oarth = "Google";
String gender = "Not Set";
if(acct.getDisplayName() != null){
personName = acct.getDisplayName();
}else{
personName ="";
}
if(acct.getEmail() != null){
email = acct.getEmail();
}else{
email ="";
}
if(acct.getId() != null){
gid = String.valueOf(acct.getId());
}else{
gid ="";
}
Log.e(TAG, "Name: " + personName + ", email: " + email
+ ", id: " + gid +", location:" +location+", oarth: "+oarth+", gender: "+gender);
//session.setMember(gid, personName, location, gender, email, oarth);
InsertFbLogindata(gid, personName, location, gender, email, oarth);
updateUI(true);
} else {
// Signed out, show unauthenticated UI.
updateUI(false);
}
}
@Override
public void onClick(View v) {
int id = v.getId();
switch (id) {
case R.id.btn_sign_in:
signIn();
break;
case R.id.btn_sign_out:
signOut();
break;
case R.id.btn_revoke_access:
revokeAccess();
break;
}
}
@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.
showDialog();
opr.setResultCallback(new ResultCallback<GoogleSignInResult>() {
@Override
public void onResult(GoogleSignInResult googleSignInResult) {
hideDialog();
handleSignInResult(googleSignInResult);
}
});
}
}
@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
Log.d(TAG, "onConnectionFailed:" + connectionResult);
}
private void updateUI(boolean isSignedIn) {
if (isSignedIn) {
btnSignIn.setVisibility(View.GONE);
btnSignOut.setVisibility(View.VISIBLE);
btnRevokeAccess.setVisibility(View.VISIBLE);
} else {
btnSignIn.setVisibility(View.VISIBLE);
btnSignOut.setVisibility(View.GONE);
btnRevokeAccess.setVisibility(View.GONE);
}
}
在我的注销片段
中public class logout extends Fragment {
Button Logout;
Session session;
LoginActivity la;
private GoogleApiClient mGoogleApiClient;
@Override
public View onCreateView(LayoutInflater inflater,ViewGroup container,Bundle savedInstanceState) {
View root = inflater.inflate(R.layout.sent_layout,container,false);
final Button logout = (Button)root.findViewById(R.id.buttonLogout);
logout.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
session = new Session(getActivity());
Intent intent = new Intent(getActivity(), LoginActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
session.setLogin(false);
LoginManager.getInstance().logOut();
Auth.GoogleSignInApi.signOut(mGoogleApiClient);
Toast.makeText(getActivity(), "Logged Out", Toast.LENGTH_SHORT).show();
startActivity(intent);
}
});
return root;
}
}
我尝试了很多例子但没有用。这有可能吗？请提出最佳方法。
答案 0 :(得分：0)
你的活动代码绝对没问题，但在login.java中，你必须按如下方式更改一些代码。
GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
.requestIdToken(getString(R.string.server_client_id))
.requestEmail()
.build();
mGoogleSignInClient=GoogleSignIn.getClient(
getActivity(),gso);
mAuth=FirebaseAuth.getInstance();
mGoogleSignInClient.signOut().
addOnCompleteListener(getActivity(),
new OnCompleteListener<Void>()
{
@Override
public void onComplete (@NonNull Task < Void > task) {
SharedPreferences getUser = getActivity().getSharedPreferences("user_info", getActivity().MODE_PRIVATE);
SharedPreferences.Editor ed = getUser.edit();
ed.putString("username", null);
ed.commit();
Snackbar.make(v.getRootView().findViewById(R.id.settings_fragment_layout), "Logged Out Successfully", Snackbar.LENGTH_SHORT).show();
HomeFragment hf = new HomeFragment();
getFragmentManager()
.beginTransaction()
.replace(R.id.fragment_container, hf)
.commit();
}
});