为什么static final int GOOGLE_SIGN_IN = 123;
FirebaseAuth mAuth;
Button btn_login, btn_logout;
TextView text;
ImageView image;
ProgressBar progressBar;
GoogleSignInClient mGoogleSignInClient;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
btn_login = findViewById(R.id.login);
btn_logout = findViewById(R.id.logout);
text = findViewById(R.id.text);
image = findViewById(R.id.image);
progressBar = findViewById(R.id.progress_circular);
mAuth = FirebaseAuth.getInstance();
GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
.requestIdToken(getString(R.string.default_web_client_id))
.requestEmail()
.build();
mGoogleSignInClient = GoogleSignIn.getClient(this, gso);
btn_login.setOnClickListener(v -> SignInGoogle());
btn_logout.setOnClickListener(v -> Logout());
if (mAuth.getCurrentUser() != null) {
FirebaseUser user = mAuth.getCurrentUser();
updateUI(user);
}
}
public void SignInGoogle() {
progressBar.setVisibility(View.VISIBLE);
Intent signInIntent = mGoogleSignInClient.getSignInIntent();
startActivityForResult(signInIntent, GOOGLE_SIGN_IN);
}
private void firebaseAuthWithGoogle(GoogleSignInAccount acct) {
Log.d("TAG", "firebaseAuthWithGoogle:" + acct.getId());
AuthCredential credential = GoogleAuthProvider.getCredential(acct.getIdToken(), null);
mAuth.signInWithCredential(credential)
.addOnCompleteListener(this, task -> {
if (task.isSuccessful()) {
progressBar.setVisibility(View.INVISIBLE);
Log.d("TAG", "signInWithCredential:success");
FirebaseUser user = mAuth.getCurrentUser();
updateUI(user);
} else {
progressBar.setVisibility(View.INVISIBLE);
Log.w("TAG", "signInWithCredential:failure", task.getException());
Toast.makeText(LoginActivity.this, "Authentication failed.",
Toast.LENGTH_SHORT).show();
updateUI(null);
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == GOOGLE_SIGN_IN) {
Task<GoogleSignInAccount> task = GoogleSignIn.getSignedInAccountFromIntent(data);
try {
GoogleSignInAccount account = task.getResult(ApiException.class);
if (account != null) firebaseAuthWithGoogle(account);
} catch (ApiException e) {
Log.w("TAG", "Google sign in failed", e);
}
}
}
private void updateUI(FirebaseUser user) {
if (user != null)
{
String name = user.getDisplayName();
String email = user.getEmail();
String photo = String.valueOf(user.getPhotoUrl());
for (UserInfo userInfo : user.getProviderData())
if (name == null && userInfo.getDisplayName() != null)
name = userInfo.getDisplayName();
text.append("Info : \n");
text.append(name + "\n");
text.append(email);
Picasso.get().load(photo).into(image);
btn_logout.setVisibility(View.VISIBLE);
btn_login.setVisibility(View.INVISIBLE);
} else
{
text.setText("Distress Alert\n");
btn_logout.setVisibility(View.INVISIBLE);
btn_login.setVisibility(View.VISIBLE);
Picasso.get().load(R.drawable.ic_firebase_logo).into(image);
}
}
private void Logout()
{
FirebaseAuth.getInstance().signOut();
mGoogleSignInClient.signOut().addOnCompleteListener(this,
task -> updateUI(null));
}
在App.xml文件中找不到类CaptionButtonRectToMarginConverter？
Shell \ CaptionButtonRectToMarginConverter.csApp.xml
Error XDG0008 File App.xml Line 13
The name "CaptionButtonRectToMarginConverter" does not exist in the namespace
"clr-namespace:ErdBuilder.Shell".
Shell \ CaptionButtonRectToMarginConverter.cs
<nRoute:Application x:Class="ErdBuilder.App"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:nRoute="http://nRoute/schemas/2010/xaml"
xmlns:chronos="http://chronos/schemas/2010/xaml"
xmlns:shell="clr-namespace:ErdBuilder.Shell"
StartupUri="Shell\Shell.xaml"
ShutdownMode="OnMainWindowClose">
<nRoute:Application.Resources>
<ResourceDictionary>
<shell:CaptionButtonRectToMarginConverter x:Key="CaptionButtonMarginConverter" />