Question

我试图在Android上创建Facebook登录，但在运行应用时出现以下致命异常：

java.lang.RuntimeException: Unable to start activity ComponentInfo{at.friendlyride.friendlyride/at.friendlyride.friendlyride.LaunchActivity}: android.view.InflateException: Binary XML file line #20: Binary XML file line #20: Error inflating class com.facebook.login.widget.LoginButton

我已按照Facebook Dev页面上的说明使用了XML代码，但我无法找到错误。这是我的代码：

// I have many more Imports, but I think this is the important one:
import com.facebook.login.widget.LoginButton;


//---------

public class LaunchFragment extends Fragment {

private TextView textDetails;

private AccessTokenTracker accessTokenTracker;
private ProfileTracker profileTracker;

private CallbackManager callbackManager;
private FacebookCallback<LoginResult> mCallback = new FacebookCallback<LoginResult>() {
    @Override
    public void onSuccess(LoginResult loginResult) {
        AccessToken accessToken = loginResult.getAccessToken();
        Profile profile = Profile.getCurrentProfile();

        if (profile != null){
            textDetails.setText("Welcome "+profile.getName());
        }
    }

    @Override
    public void onCancel() {

    }

    @Override
    public void onError(FacebookException error) {

    }
};

public LaunchFragment(){

}

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    FacebookSdk.sdkInitialize(getActivity().getApplicationContext());
    callbackManager = CallbackManager.Factory.create();

    accessTokenTracker = new AccessTokenTracker() {
        @Override
        protected void onCurrentAccessTokenChanged(AccessToken oldAccessToken, AccessToken currentAccessToken) {

        }
    };

    profileTracker = new ProfileTracker() {
        @Override
        protected void onCurrentProfileChanged(Profile oldProfile, Profile currentProfile) {

        }
    };

    accessTokenTracker.startTracking();
    profileTracker.startTracking();
}

@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    return inflater.inflate(R.layout.fragment_launch, container, false);
}

@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);
    LoginButton loginButton = (LoginButton) view.findViewById(R.id.login_button);
    loginButton.setReadPermissions(Arrays.asList("public_profile", "email", "user_friends"));
    loginButton.setFragment(this);
    loginButton.registerCallback(callbackManager, mCallback);
}

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    callbackManager.onActivityResult(requestCode, resultCode, data);
}

@Override
public void onStop() {
    super.onStop();
    accessTokenTracker.stopTracking();
    profileTracker.stopTracking();
}

@Override
public void onDestroy() {
    super.onDestroy();
    accessTokenTracker.stopTracking();
    profileTracker.stopTracking();
}
}

带有Facebook登录按钮的XML文件：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="16dp"
android:paddingRight="16dp"
android:paddingBottom="16dp"
android:paddingTop="16dp"
tools:context=".LaunchActivity"
android:background="#953395">

<TextView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:text="Hello World!"
    android:textColor="#ffffff"
    android:layout_centerHorizontal="true"/>

<com.facebook.login.widget.LoginButton
    android:id="@+id/login_button"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center_horizontal"
    android:layout_centerInParent="true"
    android:layout_marginTop="30dp"
    android:layout_marginBottom="30dp" />

</RelativeLayout>

如果有人可以帮助我，那将是很棒的，我需要这个用于我最后的学校项目：）

Answer 1

您是否在AndroidManifest.xml中记录了facebook活动和元数据？

Answer 2

我认为这是工作

使用FacebookSdk.sdkInitialize(getApplicationContext()); 之前

setContentView(R.layout.your_activity_layout);

Android Studio Facebook登录致命异常

2 个答案: