Question

我想在facebook登录后开始一项新活动。我想要一个具有facebook登录按钮的应用程序，并在登录后输入其他活动，在本教程中，点击登录按钮后会出现注销按钮，我不想显示注销按钮。这是我的代码。我正在使用facebook-android-sdk 4.1.2 Test是新的活动类。我想在facebook登录后打开它。

TextView info;
private LoginButton loginButton;
private CallbackManager callbackManager;
String name;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    FacebookSdk.sdkInitialize(getApplicationContext());
    callbackManager = CallbackManager.Factory.create();
    setContentView(R.layout.fb_button);
    info = (TextView)findViewById(R.id.info);
    loginButton = (LoginButton)findViewById(R.id.login_button);
    loginButton.setReadPermissions(Arrays.asList("public_profile, email, user_birthday, user_friends"));

    loginButton.registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
        @Override
        public void onSuccess(LoginResult loginResult) {
          GraphRequest request = GraphRequest.newMeRequest(
                    loginResult.getAccessToken(),
                    new GraphRequest.GraphJSONObjectCallback() {
                        @Override
                        public void onCompleted(
                                JSONObject object,
                                GraphResponse response) {
                            // Application code

                            try {
                           // URL image_value = new URL("http://graph.facebook.com/"+id+"/picture" );
                                name = object.getString("email");
                            } catch (JSONException e) {
                                e.printStackTrace();
                            }
                            // getting email of the use
                           info.setText(name);

                            Log.v("LoginActivity", response.toString());
                        }
                    });
            Bundle parameters = new Bundle();
            parameters.putString("fields", "id,name,email,gender, birthday");
            request.setParameters(parameters);
            request.executeAsync();
            Intent intent = new Intent(FbActivity.this, Test.class);
            FbActivity.this.startActivity(intent);

        }

        @Override
        public void onCancel() {

            info.setText("Login attempt canceled.");

        }

        @Override
        public void onError(FacebookException e) {

            info.setText("Login attempt failed.");

        }
    });

    // Execute DownloadJSON AsyncTask

}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    callbackManager.onActivityResult(requestCode, resultCode, data);
   Intent intent = new Intent(FbActivity.this, Test.class);
            FbActivity.this.startActivity(intent);
}

Answer 1

写 -

Bundle parameters = new Bundle();
    parameters.putString("fields", "id,name,email,gender, birthday");
    request.setParameters(parameters);
    request.executeAsync();
    Intent intent = new Intent(FbActivity.this, Test.class);
    FbActivity.this.startActivity(intent);

完成后，例如 -

   @Override
        public void onSuccess(LoginResult loginResult) {
          GraphRequest request = GraphRequest.newMeRequest(
                    loginResult.getAccessToken(),
                    new GraphRequest.GraphJSONObjectCallback() {
                        @Override
                        public void onCompleted(
                                JSONObject object,
                                GraphResponse response) {
                            // Application code

                            try {
                           // URL image_value = new URL("http://graph.facebook.com/"+id+"/picture" );
                                name = object.getString("email");
                            } catch (JSONException e) {
                                e.printStackTrace();
                            }
                            // getting email of the use
                           info.setText(name);


                 Bundle parameters = new Bundle();
                 parameters.putString("fields", "id,name,email,gender, birthday"); 
                 request.setParameters(parameters);
                 request.executeAsync();
                 Intent intent = new Intent(FbActivity.this, Test.class);
                 FbActivity.this.startActivity(intent);

                 Log.v("LoginActivity", response.toString());
                        }
                    });

Answer 2

登录后，您必须将此行添加到您的代码中。

loginButton.setVisibility(View.INVISIBLE);

在注销后显示

显示按钮

loginButton.setVisibility(View.VISIBLE);

使用Facebook登录按钮登录并开始新活动

2 个答案: