
在我的应用程序中登录Facebook后获取Profile.getCurrentProfile()时出现问题.我正在使用Facebook Android SDK 4.0.0.登录后我想得到用户名并在TextVIEw中显示它,但我得到profile == null,我不知道为什么.我有正确的应用ID和HashKey.
这是我的代码:
public class MyFragment extends Fragment { CallbackManager callbackManager; Loginbutton loginbutton; FacebookCallback<LoginResult> loginResultFacebookCallback = new FacebookCallback<LoginResult>() { @OverrIDe public voID onSuccess(LoginResult loginResult) { Accesstoken accesstoken = loginResult.getAccesstoken(); Log.e("FB", String.valueOf(accesstoken)); Profile profile = Profile.getCurrentProfile(); if (profile != null) { name.setText("Witam " + profile.getname()); Log.e("FB", "w"); } } @OverrIDe public voID onCancel() { // App code } @OverrIDe public voID one rror(FacebookException exception) { // App code } }; TextVIEw name; @OverrIDe public voID onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); FacebookSdk.sdkInitialize(getActivity().getApplicationContext()); callbackManager = CallbackManager.Factory.create(); } @OverrIDe public VIEw onCreateVIEw(LayoutInflater inflater, @Nullable VIEwGroup container, @Nullable Bundle savedInstanceState) { VIEw vIEw = inflater.inflate(R.layout.myfragment_facebook, container, false); name = (TextVIEw) vIEw.findVIEwByID(R.ID.name); return vIEw; } @OverrIDe public voID onVIEwCreated(VIEw vIEw, @Nullable Bundle savedInstanceState) { super.onVIEwCreated(vIEw, savedInstanceState); loginbutton = (Loginbutton) vIEw.findVIEwByID(R.ID.login_button); loginbutton.setReadPermissions(Arrays.asList("public_profile", "user_frIEnds")); loginbutton.setFragment(this); loginbutton.registerCallback(callbackManager, loginResultFacebookCallback); } @OverrIDe public voID onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); callbackManager.onActivityResult(requestCode, resultCode, data); }}当我在Logcat中检查Token时,我获得了Accesstoken令牌:ACCESS_TOKEN_REMOVED
解决方法:
登录发生后异步提取配置文件.如果要跟踪它,类似于此示例:https://github.com/facebook/facebook-android-sdk/blob/b384c0655fe96db71229bfdcb981a522f3f1e675/samples/SwitchUserSample/src/com/facebook/samples/switchuser/ProfileFragment.java#L54
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