Android 2.2 API ---------ImageButton

一：Activity——main:
<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=".MainActivity"
android:background="@drawable/bg1"
>

<TextView
android:id="@+id/tvNamePrompt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="171dp"
android:text="@string/tv_namePrompt" />
<EditText
android:id="@+id/etName"
android:hint="@string/tv_namePrompt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/tvNamePrompt"
android:layout_centerHorizontal="true"
android:layout_marginTop="20dp"
android:ems="10"
android:inputType="textPersonName" >

<requestFocus />
</EditText>

<Button
android:id="@+id/btn_Click"
android:background="@null"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignRight="@+id/tvNamePrompt"
android:layout_below="@+id/etName"
android:layout_marginTop="26dp"
android:layout_marginLeft="10dp"
android:text="@string/btn_Click" />

</RelativeLayout>
二：MainActivity:
package cn.edu.bztc.android;

import org.apache.http.client.protocol.ClientContextConfigurer;

import cn.edu.bztc.andriod.R;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends Activity {
public static final String TAG="MainActivity";
private Button  btnClick;
private EditText etName;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

btnClick = (Button) findViewById(R.id.btn_Click);
btnClick.setOnClickListener(new ClickHandler());
etName=(EditText) findViewById(R.id.etName);
}
class ClickHandler implements OnClickListener{

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
String name=etName.getText().toString();
Log.d(TAG, "name="+name);
Toast.makeText(MainActivity.this, "你好"+name, Toast.LENGTH_LONG).show();
}

}

三：Strings.xml:
<resources>

<string name="app_name">Andriod</string>
<string name="action_settings">Settings</string>
<string name="tv_namePrompt">请输入你的姓名!</string>
<string name="btn_Click">请触摸它</string>

</resources>