package com.lxt008;import com.lxt008.R;import android.app.Activity;import android.os.Bundle;import android.view.KeyEvent;import android.view.View;import android.widget.EditText;import android.widget.TextView;public class Activity01 extends Activity{    private TextView    m_TextView;    private EditText    m_EditText;    /** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState)    {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        m_TextView = (TextView) findViewById(R.id.TextView01);        m_EditText = (EditText) findViewById(R.id.EditText01);        m_TextView.setTextSize(20);        /**         * 设置当m_EditText中为空时提示的内容          * 在XML中同样可以实现：android:hint="请输入账号"         */        m_EditText.setHint("请输入账号");                /* 设置EditText事件监听 */        m_EditText.setOnKeyListener(new EditText.OnKeyListener() {            public boolean onKey(View arg0, int arg1, KeyEvent arg2)            {                // TODO Auto-generated method stub                // 得到文字，将其显示到TextView中                m_TextView.setText("文本框中内容是：" + m_EditText.getText().toString());                return false;            }        });    }}

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    >    <TextView      android:id="@+id/TextView01"    android:layout_width="fill_parent"     android:layout_height="wrap_content"     />  <EditText  android:id="@+id/EditText01"  android:layout_width="fill_parent"  android:layout_height="wrap_content"  android:textSize="18sp"      android:layout_x="29px"  android:layout_y="33px"  /></LinearLayout>