所以这就是我现在坚持了一天以上的事情。 我正在尝试将新的Firebase规范实施到使用Facebook登录用户到我的Android项目中。
我真的非常感谢能够帮助我找出问题所在的人。
错误我一次又一次地
活动确实在清单中，我可以启动它，但是当我点击登录按钮时，我收到以下错误（奇怪的是它提到了FacebookActivity而不是FacebookLoginActivity，这是名称我的活动）：
06-10 11:38:49.058 7210-7210/com.yatoo E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.yatoo, PID: 7210
Log in attempt failed: FacebookActivity could not be started. Please make sure you added FacebookActivity to the AndroidManifest.
at com.facebook.login.LoginManager.startLogin(LoginManager.java:369)
at com.facebook.login.LoginManager.logInWithReadPermissions(LoginManager.java:263)
at com.facebook.login.widget.LoginButton$LoginClickListener.onClick(LoginButton.java:737)
at com.facebook.FacebookButtonBase$1.onClick(FacebookButtonBase.java:359)
at android.view.View.performClick(View.java:5697)
at android.widget.TextView.performClick(TextView.java:10814)
at android.view.View$PerformClick.run(View.java:22526)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:158)
at android.app.ActivityThread.main(ActivityThread.java:7224)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)
在清单中仔细检查
<meta-data
android:name="com.facebook.sdk.ApplicationId"
android:value="@string/facebook_app_id" />
<activity
android:name=".activity.FacebookLoginActivity" />
FacebookLoginActivity代码 这与Google提供的示例完全相似，可以在此处找到：Google Link to Facebook Login integration using the new Firebase version
public class FacebookLoginActivity extends AppCompatActivity implements
View.OnClickListener {
private static final String TAG = "FacebookLogin";
private TextView mStatusTextView;
private TextView mDetailTextView;
// [START declare_auth]
private FirebaseAuth mAuth;
// [END declare_auth]
// [START declare_auth_listener]
private FirebaseAuth.AuthStateListener mAuthListener;
// [END declare_auth_listener]
private CallbackManager mCallbackManager;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
FacebookSdk.sdkInitialize(getApplicationContext());
setContentView(R.layout.activity_facebook_login);
// Views
mStatusTextView = (TextView) findViewById(R.id.status);
mDetailTextView = (TextView) findViewById(R.id.detail);
findViewById(R.id.button_facebook_signout).setOnClickListener(this);
// [START initialize_auth]
// Initialize Firebase Auth
mAuth = FirebaseAuth.getInstance();
// [END initialize_auth]
// [START auth_state_listener]
mAuthListener = new FirebaseAuth.AuthStateListener() {
@Override
public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
FirebaseUser user = firebaseAuth.getCurrentUser();
if (user != null) {
// User is signed in
Log.d(TAG, "onAuthStateChanged:signed_in:" + user.getUid());
} else {
// User is signed out
Log.d(TAG, "onAuthStateChanged:signed_out");
}
// [START_EXCLUDE]
updateUI(user);
// [END_EXCLUDE]
}
};
// [END auth_state_listener]
// [START initialize_fblogin]
// Initialize Facebook Login button
mCallbackManager = CallbackManager.Factory.create();
LoginButton loginButton = (LoginButton) findViewById(R.id.button_facebook_login);
loginButton.setReadPermissions("email", "public_profile");
loginButton.registerCallback(mCallbackManager, new FacebookCallback<LoginResult>() {
@Override
public void onSuccess(LoginResult loginResult) {
Log.d(TAG, "facebook:onSuccess:" + loginResult);
handleFacebookAccessToken(loginResult.getAccessToken());
}
@Override
public void onCancel() {
Log.d(TAG, "facebook:onCancel");
// [START_EXCLUDE]
updateUI(null);
// [END_EXCLUDE]
}
@Override
public void onError(FacebookException error) {
Log.d(TAG, "facebook:onError", error);
// [START_EXCLUDE]
updateUI(null);
// [END_EXCLUDE]
}
});
// [END initialize_fblogin]
}
// [START on_start_add_listener]
@Override
public void onStart() {
super.onStart();
mAuth.addAuthStateListener(mAuthListener);
}
// [END on_start_add_listener]
// [START on_stop_remove_listener]
@Override
public void onStop() {
super.onStop();
if (mAuthListener != null) {
mAuth.removeAuthStateListener(mAuthListener);
}
}
// [END on_stop_remove_listener]
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
mCallbackManager.onActivityResult(requestCode, resultCode, data);
}
// [START auth_with_facebook]
private void handleFacebookAccessToken(AccessToken token) {
Log.d(TAG, "handleFacebookAccessToken:" + token);
// [START_EXCLUDE silent]
// [END_EXCLUDE]
AuthCredential credential = FacebookAuthProvider.getCredential(token.getToken());
mAuth.signInWithCredential(credential)
.addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
Log.d(TAG, "signInWithCredential:onComplete:" + task.isSuccessful());
// If sign in fails, display a message to the user. If sign in succeeds
// the auth state listener will be notified and logic to handle the
// signed in user can be handled in the listener.
if (!task.isSuccessful()) {
Log.w(TAG, "signInWithCredential", task.getException());
Toast.makeText(FacebookLoginActivity.this, "Authentication failed.",
Toast.LENGTH_SHORT).show();
}
// [START_EXCLUDE]
// [END_EXCLUDE]
}
});
}
// [END auth_with_facebook]
public void signOut() {
mAuth.signOut();
LoginManager.getInstance().logOut();
updateUI(null);
}
private void updateUI(FirebaseUser user) {
if (user != null) {
mStatusTextView.setText(getString(R.string.facebook_status_fmt, user.getDisplayName()));
mDetailTextView.setText(getString(R.string.firebase_status_fmt, user.getUid()));
findViewById(R.id.button_facebook_login).setVisibility(View.GONE);
findViewById(R.id.button_facebook_signout).setVisibility(View.VISIBLE);
} else {
mStatusTextView.setText(R.string.signed_out);
mDetailTextView.setText(null);
findViewById(R.id.button_facebook_login).setVisibility(View.VISIBLE);
findViewById(R.id.button_facebook_signout).setVisibility(View.GONE);
}
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.button_facebook_signout:
signOut();
break;
}
}
}
答案 0 :(得分：2)
您还应该在清单中定义默认FacebookActivity，例如
<activity
android:name="com.facebook.FacebookActivity"
android:configChanges="keyboard|keyboardHidden|screenLayout|screenSize"
android:label="@string/app_name"/>
答案 1 :(得分：0)
您可能还想在https://developers.facebook.com/quickstarts/?platform=android
浏览Android的Facebook快速入门指南