我正在尝试在简单应用程序的主要活动中添加Facebook登录按钮。当我按下"登录Facebook"按钮,我打开了FB应用程序进行登录,但成功登录后,应用程序返回到我的应用程序的主屏幕,没有任何反应(没有调用为LoginManager注册的回调函数)。
我的代码如下:
public class MainActivity extends FragmentActivity {
Button changeButton;
LoginButton loginButton;
CallbackManager callbackManager;
MainActivity thisActivity;
// Sets the Facebook login.
private void setupFacebookLogin() {
// Create the callbackManager and add functionality to it.
callbackManager = CallbackManager.Factory.create();
LoginManager.getInstance().registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
@Override
public void onSuccess(LoginResult loginResult) {
throw new AssertionError();
}
@Override
public void onCancel() {
}
@Override
public void onError(FacebookException e) {
}
});
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
thisActivity = this;
// Initialize Facebook SDK.
FacebookSdk.sdkInitialize(getApplicationContext());
setupFacebookLogin();
// Set the current layout to main.
setContentView(R.layout.activity_main);
}
@Nullable
@Override
public View onCreateView(String name, Context context, AttributeSet attrs) {
return super.onCreateView(name, context, attrs);
}
@Override
protected void onResume() {
super.onResume();
AppEventsLogger.activateApp(this);
}
@Override
public void onPause() {
super.onPause();
AppEventsLogger.deactivateApp(this);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data){
super.onActivityResult(requestCode, resultCode, data);
callbackManager.onActivityResult(requestCode, resultCode, data);
}
}
另外,我的xml是:
<TextView android:text="@string/hello_world" android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/textView" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="change"
android:id="@+id/button1"
android:layout_below="@+id/textView"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginTop="61dp" />
<com.facebook.login.widget.LoginButton
android:id="@+id/fb_login_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_below="@+id/button1"
android:layout_centerHorizontal="true" />
由于onSuccess中的断言,我希望应用程序在从FB登录返回时崩溃。但事实并非如此。 任何帮助将不胜感激,谢谢!
答案 0 :(得分:0)
在&#34中添加以下行;使用Facebook登录&#34;按钮单击侦听器:
LoginManager.getInstance().logInWithReadPermissions(WelcomeActivity1.this, (Arrays.asList("public_profile", "user_friends","user_birthday","user_about_me","email")));