Android开发之onClick事件的三种写法

「爱情、让人受尽委屈。」 2022-08-05 16:17 169阅读 0赞

[http://blog.csdn.net/a9529lty/article/details/7542828][http_blog.csdn.net_a9529lty_article_details_7542828]

**\[java\]** [ view plain][view plain] [copy][view plain] [print][view plain] [?][view plain]

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 AActivityextends 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. \}

package a.a;
    
    import android.app.Activity;
    import android.os.Bundle;
    import android.view.View;
    import android.widget.Button;
    import android.widget.EditText;
    
    public class AActivity extends Activity {
    	/** Called when the activity is first created. */
    
    	EditText Ev1;
    
    	@Override
    	public void onCreate(Bundle savedInstanceState) {
    		super.onCreate(savedInstanceState);
    		setContentView(R.layout.main);
    
    		Ev1 = (EditText)findViewById(R.id.editText1);  
    
    		//第一种方式  
    		Button Btn1 = (Button)findViewById(R.id.button1);//获取按钮资源  
    		Btn1.setOnClickListener(new Button.OnClickListener(){//创建监听  
    			public void onClick(View v) {  
    				String strTmp = "点击Button01";  
    				Ev1.setText(strTmp);  
    			}  
    
    		});  
    
    		//第二种方式  
    		Button Btn2 = (Button) findViewById(R.id.button2);//获取按钮资源  
    		Btn2.setOnClickListener(listener);//设置监听  
    
    	}
    
    	Button.OnClickListener listener = new Button.OnClickListener(){//创建监听对象  
    		public void onClick(View v){  
    			String strTmp="点击Button02";  
    			Ev1.setText(strTmp);  
    		}  
    
    	};
    
    
    	//第三种方式(Android1.6版本及以后的版本中提供了)  
    	public void Btn3OnClick(View view){  
    		String strTmp="点击Button03";
    		Ev1.setText(strTmp);
    
    	}  
    }

**\[html\]** [ view plain][view plain] [copy][view plain] [print][view plain] [?][view plain]

1.  <?xmlversion="1.0"encoding="utf-8"?> 
2.  <LinearLayoutxmlns: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>

[http_blog.csdn.net_a9529lty_article_details_7542828]: http://blog.csdn.net/a9529lty/article/details/7542828
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