一个简单的单击事件监听代码哪里错了？

Question

MainActivity.java

 package com.example.a007;

import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;


public class MainActivity extends ActionBarActivity {
    private EditText myet1;
    private Button mybtn1;
    private TextView mytv1;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        this.myet1=(EditText)super.findViewById(R.id.et1);
        this.mybtn1=(Button)super.findViewById(R.id.btn1);
        this.mytv1=(TextView)super.findViewById(R.id.tv1);
        mybtn1.setOnClickListener(new ShowListener()); //注册监听
    }
    private class ShowListener implements OnClickListener{  //定义监听处理程序
        public void onClick(View v){
            String info=myet1.getText().toString();
            mytv1.setText("Your telephone number is:"+info);
        }
    }
}

activity_main.xml

 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.a007.MainActivity" >

    <EditText
        android:id="@+id/et1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="20px"
        android:phoneNumber="true"
        android:selectAllOnFocus="true"
        android:text="Please input your telephone number:" />
    <Button
        android:id="@+id/btn1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/et1"
        android:layout_marginTop="20dp"
        android:textSize="20px"
        android:text="Show your telephone number" />
    <View
        android:layout_height="1dp"
        android:background="#909090" />
    <TextView
        android:id="@+id/tv1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/btn1"
        android:layout_marginTop="20dp"
        android:textSize="20px" />
</RelativeLayout>

程序运行不起来，stopped unexpectedly..

Answer 1

class ButtonClick implements View.OnClickListener
{
@Override
public void onClick(View v)
{
}
}
最好能将出错的 LOG 帖出来， 这样好分析问题的原因在哪里？