Question

我正在尝试使用facebook登录我的应用程序。我有一个主要活动和几个片段。使用facebook sdk 3.5.2我做了facebook officaial tutorial，但是当我添加这行authButton.setFragment(this);时，它给了我一个错误，我的片段不是片段。

（LoginButton类型中的方法setFragment（Fragment）不是适用于参数（FaceobookLoginFragment））

我正在将主要类的片段添加到动作栏中，就像这样

ActionBar bar = getActionBar();

bar.setDisplayShowHomeEnabled(false);

bar.setDisplayShowTitleEnabled(false);

bar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);

String FloginTitle = "Flogin";
ActionBar.Tab FloginTab = bar.newTab();
FloginTab.setText(FloginTitle);
FloginTab.setTabListener(new TabListener(this, FloginTitle, FaceobookLoginFragment.class));
bar.addTab(FloginTab);

这是听众

public class TabListener implements ActionBar.TabListener{

private final FragmentActivity fActivity;
private final String ftag;
private final Class fragmentClass;
private Fragment fragment;


public TabListener(FragmentActivity activity, String tag, Class fragmentClass ) {
    this.fActivity = activity;
    this.ftag = tag;
    this.fragmentClass = fragmentClass;

    this.fragment = activity.getFragmentManager().findFragmentByTag(tag);

}

@Override
public void onTabReselected(Tab tab, android.app.FragmentTransaction ft) {
    // TODO Auto-generated method stub

}

@Override
public void onTabSelected(Tab tab, android.app.FragmentTransaction ft) {
    if (fragment == null) {
        // instantiate a new fragment for the given class
        fragment = Fragment.instantiate(fActivity, fragmentClass.getName());
        // place in the default root viewgroup - android.R.id.content
        ft.replace(android.R.id.content, fragment, ftag);
    } else {
        if (fragment.isDetached())
            ft.attach(fragment);
    }

}

@Override
public void onTabUnselected(Tab tab, android.app.FragmentTransaction ft) {
    if (fragment != null) {
        ft.detach(fragment);
    }       
}

和Facebook Fragment

public class FaceobookLoginFragment extends Fragment {

private static final String TAG = "FBLOGINFRAGMENT";

private UiLifecycleHelper uiHelper;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    uiHelper = new UiLifecycleHelper(getActivity(), callback);
    uiHelper.onCreate(savedInstanceState);
}

@Override
public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);

}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.facebook_login_layout, container, false);
    LoginButton authButton = (LoginButton) view.findViewById(R.id.authButton);
    authButton.setFragment(new FaceobookLoginFragment());
    return view;
}

private void onSessionStateChange(Session session, SessionState state, Exception exception) {
    if (state.isOpened()) {
        Log.i(TAG , "Logged in...");
    } else if (state.isClosed()) {
        Log.i(TAG, "Logged out...");
    }
}

private Session.StatusCallback callback = new Session.StatusCallback() {
    @Override
    public void call(Session session, SessionState state, Exception exception) {
        onSessionStateChange(session, state, exception);
    }
};

@Override
public void onResume() {
    super.onResume();
    uiHelper.onResume();
}

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

@Override
public void onPause() {
    super.onPause();
    uiHelper.onPause();
}

@Override
public void onDestroy() {
    super.onDestroy();
    uiHelper.onDestroy();
}

@Override
public void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState);
    uiHelper.onSaveInstanceState(outState);
}

// prints a hashkey for facebook app data
public void printHashKey() {

    try {
        PackageInfo info = getActivity().getPackageManager().getPackageInfo("com.mio.discounthunter", PackageManager.GET_SIGNATURES);
        for (Signature signature : info.signatures) {
            MessageDigest md = MessageDigest.getInstance("SHA");
            md.update(signature.toByteArray());
            Log.d("TEMPTAGHASH KEY:", Base64.encodeToString(md.digest(), Base64.DEFAULT));
        }
    } catch (NameNotFoundException e) {

    } catch (NoSuchAlgorithmException e) {

    }

}

更新：找出原因.. facebook sdk只适用于android支持库，因此解决方案是使用import android.support.v4.app。*遍布我的应用程序并重新考虑所有涉及支持库......

Answer 1

而不是setFragment(this)

您可以在onActivityResult中使用Activity并从那里调用片段的onActivityResult，如下所示：

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

感谢@Andre Classen的原始答案：https://stackoverflow.com/a/26695501/2082569

facebook登录按钮setfragment错误

1 个答案: