Facebook登录后将活动重定向到Frontpage活动

Question

I am trying to accomplish a redirection to a Frontpage activity after facebook login,I have tried this given code but didn't workout yes also tried this link but didn't work out
Code from Login activity.

public  class login extends FragmentActivity {


private boolean isMainLobbyStarted = false;

CallbackManager callbackManager;
private LoginButton loginButton;
private loginResult loginResult;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    FacebookSdk.sdkInitialize(this.getApplicationContext());
    setContentView(R.layout.activity_login);


    public void onSuccess(LoginResult loginResult) {
        System.out.println("onSuccess");
        Intent mainLobby = new Intent(login.this, Frontpage.class);
        if(!isMainLobbyStarted) {
            startActivity(mainLobby);
            isMainLobbeyStarted = true;
    }

}




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

Messages gradle built

Error:(54, 2) error: reached end of file while parsing
Error:(35, 9) error: illegal start of expression
Error:(35, 16) error: illegal start of expression
Error:(35, 30) error: ';' expected
Error:(35, 54) error: ';' expected
Error:(49, 36) error: ';' expected
Error:(49, 53) error: <identifier> expected
Error:(49, 58) error: not a statement
Error:(49, 68) error: ';' expected
Error:(49, 81) error: ';' expected
Error:Execution failed for task ':app:compileDebugJavaWithJavac'.
Compilation failed; see the compiler error output for details.

Answer 1

I have posted the answer with the complete set of coding please feel free to ask me if you find your self with an error

import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import com.facebook.CallbackManager;
import com.facebook.FacebookCallback;
import com.facebook.FacebookException;
import com.facebook.FacebookSdk;
import com.facebook.login.LoginManager;
import com.facebook.login.LoginResult;

public  class login extends FragmentActivity {

CallbackManager callbackManager;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    FacebookSdk.sdkInitialize(this.getApplicationContext());
    setContentView(R.layout.activity_login);

    callbackManager = CallbackManager.Factory.create();

    LoginManager.getInstance().registerCallback(callbackManager,
            new FacebookCallback<LoginResult>() {
                @Override
                public void onSuccess(LoginResult loginResult) {
                    Intent intent = new Intent(login.this, Frontpage.class);
                    startActivity(intent);
                    // App code
                }

                @Override
                public void onCancel() {
                    // App code
                }

                @Override
                public void onError(FacebookException exception) {
                    // App code
                }
            });
}


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

}