Android资源|来自子活动的NotFoundException反馈

Question

概述活动将发送和整数到培训活动，培训活动将在活动从堆栈中弹出时向其调用者发送反馈。所以当它返回一个整数到概述活动时，logcat会说错误。资源未找到

这是OverviewActivity Class

package com.ehsan.myapplication;

import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;



public class OverviewActivity extends AppCompatActivity {

    String text = null;
    int skillLevle = 0;
    public static final int REQUEST_CODE = 0;

    private TextView mTextView;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_overview);

        Intent intent = getIntent();
        Bundle bundle = intent.getExtras();
        mTextView = (TextView) findViewById(R.id.username);


        if(intent != null){

            text = bundle.getString("username");

            mTextView.setText(text);


        }
    }

    public void onClick(View view){


        Intent intent = new Intent(this,LearnActivity.class);

        intent.putExtra("skill",skillLevle);

        startActivityForResult(intent,REQUEST_CODE);


    }

    public void onActivityResult(int reqeuestCode,int resutlCode,Intent extras){


        int skills = extras.getIntExtra("skill",0);

        Toast.makeText(this, skills, Toast.LENGTH_LONG).show();


    }
}

这是LearnActivity Class

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

public class LearnActivity extends AppCompatActivity {

    private int skillLevle = 5;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_learn);

        Intent intent = getIntent();

        if (intent != null){
            skillLevle = intent.getExtras().getInt("skill");
        }
    }

    public void finish(){

        Intent intent2 = new Intent();

        intent2.putExtra("skill",skillLevle);

        setResult(RESULT_OK,intent2);

        super.finish();


    }

}