我是新手学生，自学android，求助
我写书上的例子来练手。但是在虚拟机上无法运行，老是出现“unfortunately，。。。。has stoped"
下面是logCat和代码，求教


package com.example.perssionget;



import android.os.Bundle;
import android.app.Activity;

import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.TextView;

public class MainActivity extends Activity
{
/** Called when the activity is first created. */


/*声明 TextView、CheckBox、Button对象*/
public TextView myTextView1;
public TextView myTextView2;
public CheckBox myCheckBox;
public Button myButton;

@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
/*取得TextView、CheckBox、Button*/
myTextView1 = (TextView) findViewById(R.id.myTextView1);
myTextView2 = (TextView) findViewById(R.id.myTextView2);
myCheckBox = (CheckBox) findViewById(R.id.myCheckBox);
myButton = (Button) findViewById(R.id.myButton);
/*将CheckBox、Button预设为未选取状态*/
myCheckBox.setChecked(false);
myButton.setEnabled(false);
myCheckBox.setOnClickListener(new CheckBox.OnClickListener()
{
@Override public void onClick(View v)
{
// TODO Auto-generated method stub
if(myCheckBox.isChecked())
{
myButton.setEnabled(true);
myTextView2.setText("");
}
else
{
myButton.setEnabled(false);
myTextView1.setText(R.string.text1);
/*在TextView2里显示出"请勾选我同意"*/

myTextView2.setText(R.string.no);
}
}
});
myButton.setOnClickListener(new Button.OnClickListener()
{
@Override
public void onClick(View v)
{
// TODO Auto-generated method stub
if(myCheckBox.isChecked())
{
myTextView1.setText(R.string.ok);
}
else
{
}
}
});
}
}
Android 虚拟机 CheckBox
[解决办法]
logCat的显示呢，“unfortunately，。。。。has stoped"这个程序运行不了都会出现的，我也是新手，我开始也以为是logcat