Failed to find byte code for com/facebook/android/Facebook$ServiceListener
오류가 뜹니다. 코드는 아래와 같습니다.
package com.example.kimyuhyeon;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import com.facebook.CallbackManager;
import com.facebook.FacebookCallback;
import com.facebook.FacebookException;
import com.facebook.FacebookSdk;
import com.facebook.GraphRequest;
import com.facebook.GraphResponse;
import com.facebook.login.LoginResult;
import com.facebook.login.widget.LoginButton;
import org.json.JSONObject;
import java.util.Arrays;
public class Login extends AppCompatActivity {
CallbackManager callbackManager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
FacebookSdk.sdkInitialize(this.getApplicationContext());
setContentView(R.layout.activity_login);
callbackManager = CallbackManager.Factory.create();
LoginButton loginButton = (LoginButton)findViewById(R.id.btnLogin);
loginButton.setReadPermissions("email");
loginButton.registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
public void onSuccess(LoginResult loginResult) {
GraphRequest graphRequest = GraphRequest.newMeRequest(loginResult.getAccessToken(), new GraphRequest.GraphJSONObjectCallback() {
@Override
public void onCompleted(JSONObject object, GraphResponse response) {
Log.v("result",object.toString());
}
});
Bundle parameters = new Bundle();
parameters.putString("fields", "id,name,email,gender,birthday");
graphRequest.setParameters(parameters);
graphRequest.executeAsync();
}
@Override
public void onCancel() {
}
@Override
public void onError(FacebookException error) {
Log.e("LoginErr",error.toString());
}
});
}
}