Android開發學習筆記：圓角的Button

在res目錄下的drawable-mdpi建立xml文件shape.xml,如下圖所示：

shape.xml

<?xml version="1.0" encoding="UTF-8"?> 
<shape 
    xmlns:android="http://schemas.android.com/apk/res/android" 
    android:shape="rectangle"> 
    <!-- 填充的顏色 --> 
    <solid android:color="#FFFFFF" /> 
    <!-- 設置按鈕的四個角為弧形 --> 
    <!-- android:radius 弧形的半徑 --> 
    <corners android:radius="5dip" /> 
      
<!-- padding：Button里面的文字與Button邊界的間隔 --> 
<padding 
   android:left="10dp" 
   android:top="10dp" 
   android:right="10dp" 
   android:bottom="10dp" 
/> 
</shape> 

 

main.xml

在android:background="@drawable/shape"就使用了shape.xml資源

<?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:layout_width="fill_parent"   
    android:layout_height="wrap_content"   
    android:text="@string/hello" 
    />   
<Button   
    android:id="@+id/roundButton" 
    android:text=" 圓角按鈕 " 
    android:layout_width="wrap_content"   
    android:layout_height="wrap_content"   
    android:background="@drawable/shape" 
    /> 
</LinearLayout> 

strings.xml

<?xml version="1.0" encoding="utf-8"?> 
<resources> 
    <string name="hello">Hello World, RoundButtonDemoActivity!</string> 
    <string name="app_name">RoundButtonDemo</string> 
</resources> 

RoundButtonDemoActivity.java

package com.android.RoundButtonDemo.activity;  
 
import android.app.Activity;  
import android.os.Bundle;  
import android.view.View;  
import android.view.View.OnClickListener;  
import android.widget.Button;  
import android.widget.Toast;  
 
public class RoundButtonDemoActivity extends Activity {  
    Button roundButton;  
    @Override 
    public void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.main);  
          
        roundButton=(Button)findViewById(R.id.roundButton);  
      //使用匿名類注冊Button事件  
        roundButton.setOnClickListener(new OnClickListener()  
      {       
            public void onClick(View v)  
            {  
                Toast.makeText(RoundButtonDemoActivity.this, "你點擊了圓角按鈕",Toast.LENGTH_LONG).show();  
            }  
        });  
    }  
} 

效果圖：

 轉http://liangruijun.blog.51cto.com/3061169/630051