[英]Android - Facebook log in outside of an Activity with your own button
编辑:当我单击我的按钮并调用fbLogin()
该应用程序会自动登录,但仍然无法访问我的onSuccess()
方法并将其打印为“成功”,是否是因为我没有从自己的活动中进行操作onCreate方法,但是当我使用按钮时该怎么做? (我正在扩展我的活动):
public class AndroidPlatform extends AndroidLauncher implements PlatformSpecific{
private Activity context;
private CallbackManager callbackManager;
public AndroidPlatform(Activity context){
this.context = context;
callbackManager = CallbackManager.Factory.create();
}
@Override
public void fbLogin() {
System.out.println("Hello Android");
String a[] = new String[]{"user_friends"};
LoginManager.getInstance().logInWithReadPermissions(context, Arrays.asList(a)); //Log in to FB
LoginManager.getInstance().registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
@Override
public void onSuccess(LoginResult loginResult) {
System.out.println("Success");
}
@Override
public void onCancel() {
System.out.println("Cancel");
}
@Override
public void onError(FacebookException e) {
System.out.println("Error");
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
callbackManager.onActivityResult(requestCode, resultCode, data);
}
}
为了清楚起见,这里是我扩展的类(我的活动):
public class AndroidLauncher extends AndroidApplication {
@Override
protected void onCreate (Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
FacebookSdk.sdkInitialize(getApplicationContext());
AndroidApplicationConfiguration config = new AndroidApplicationConfiguration();
initialize(new MyGdxGame(new AndroidPlatform(this)), config);
}
}
如果我无法访问该方法,那么我将无法获得有关用户的任何信息,问题是我必须在此类中进行操作,我无法在自己的活动中进行操作,有没有办法使该工作有效?
您应该重写onActivityResult,以便在Facebook将控制权返回给您的活动时,该活动将能够使用您注册的回调管理器来处理结果。
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
callbackManager.onActivityResult(requestCode, resultCode, data);
}
有关使用LoginButton的示例,请参见https://developers.facebook.com/docs/facebook-login/android/v2.4#callback_handling 。
要使用非活动类的您自己的按钮登录到Facebook,可以执行以下操作:
您从以下位置登录的班级:
public AndroidPlatform(Activity context){
this.context = context;
callbackManager = CallbackManager.Factory.create();
}
@Override
public void fbLogin() {
String a[] = new String[]{"user_friends"};
LoginManager.getInstance().logInWithReadPermissions(context, Arrays.asList(a)); //Log in to FB
LoginManager.getInstance().registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
@Override
public void onSuccess(LoginResult loginResult) {
System.out.println("Success");
GraphRequest request = GraphRequest.newMeRequest(
loginResult.getAccessToken(),
new GraphRequest.GraphJSONObjectCallback() {
@Override
public void onCompleted(
JSONObject object,
GraphResponse response) {
// Application code
Log.v("LoginActivity", response.toString());
}
});
Bundle parameters = new Bundle();
parameters.putString("fields", "id,name,email,gender, birthday");
request.setParameters(parameters);
request.executeAsync();
}
@Override
public void onCancel() {
System.out.println("Cancel");
}
@Override
public void onError(FacebookException e) {
System.out.println("Error");
}
});
}
public CallbackManager getCM(){
return callbackManager;
}
这是非常标准的,关键是您在类中为CallbackManager
制定了get方法,因此您可以像这样从Activity调用onActivityResult
:
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
ap.getCM().onActivityResult(requestCode, resultCode, data);
}
这就是全部。
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