1 package a.a;
2
3 import android.app.Activity;
4 import android.os.Bundle;
5 import android.view.View;
6 import android.widget.Button;
7 import android.widget.EditText;
8
9 public class AActivity extends Activity {
10 /** Called when the activity is first created. */
11
12 EditText Ev1;
13
14 @Override
15 public void onCreate(Bundle savedInstanceState) {
16 super.onCreate(savedInstanceState);
17 setContentView(R.layout.main);
18
19 Ev1 = (EditText)findViewById(R.id.editText1);
20
21 //第一种方式
22 Button Btn1 = (Button)findViewById(R.id.button1);//获取按钮资源
23 Btn1.setOnClickListener(new Button.OnClickListener(){//创建监听
24 public void onClick(View v) {
25 String strTmp = "点击Button01";
26 Ev1.setText(strTmp);
27 }
28
29 });
30
31 //第二种方式
32 Button Btn2 = (Button) findViewById(R.id.button2);//获取按钮资源
33 Btn2.setOnClickListener(listener);//设置监听
34
35 }
36
37 Button.OnClickListener listener = new Button.OnClickListener(){//创建监听对象
38 public void onClick(View v){
39 String strTmp="点击Button02";
40 Ev1.setText(strTmp);
41 }
42
43 };
44
45
46 //第三种方式(Android1.6版本及以后的版本中提供了)
47 public void Btn3OnClick(View view){
48 String strTmp="点击Button03";
49 Ev1.setText(strTmp);
50
51 }
52 }
1 <?xml version="1.0" encoding="utf-8"?>
2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
3 android:layout_width="fill_parent"
4 android:layout_height="fill_parent"
5 android:orientation="vertical" >
6
7 <TextView
8 android:layout_width="fill_parent"
9 android:layout_height="wrap_content"
10 android:text="@string/hello" />
11
12 <Button
13 android:id="@+id/button1"
14 android:layout_width="wrap_content"
15 android:layout_height="wrap_content"
16 android:text="Button1" />
17
18 <Button
19 android:id="@+id/button2"
20 android:layout_width="wrap_content"
21 android:layout_height="wrap_content"
22 android:text="Button2" />
23
24 <Button
25 android:id="@+id/button3"
26 android:layout_width="wrap_content"
27 android:layout_height="wrap_content"
28 android:text="Button3"
29 android:onClick="Btn3OnClick"/>
30
31 <EditText
32 android:id="@+id/editText1"
33 android:layout_width="match_parent"
34 android:layout_height="wrap_content" >
35
36 <requestFocus />
37 </EditText>
38
39 </LinearLayout>