Button 上加圖片效果

1. mail.xml

 

<?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"
 
    >
 
        <RelativeLayout
 
                android:layout_marginTop="10dip"
 
                android:layout_width="fill_parent"
                android:layout_height="wrap_content">
 
                <Button android:id="@+id/button1"
 
                        android:layout_width="250dip"
 
                        android:layout_height="wrap_content"
 
                        android:gravity="center"
 
                        android:background="@drawable/buttonstyle"
 
                        android:textSize="20sp"
 
                        android:layout_marginLeft="30dip"
 
                        android:layout_marginRight="30dip">
 
                </Button>
 
        </RelativeLayout>
 
</LinearLayout>

 

2. res/drawable/buttonstyle.xml

 

<?xml version="1.0" encoding="UTF-8"?>
 
<selector xmlns:android="http://schemas.android.com/apk/res/android">
 

        <item android:state_pressed="true" android:drawable="@drawable/button_selected" />
 

        <item android:state_focused="true" android:state_enabled="true"
 
                android:state_window_focused="true" android:drawable="@drawable/button_focused" />
 

        <item android:drawable="@drawable/button_defalut" />
 
</selector>

 

3. demobutton.java

 

package com.demobutton;
 

import android.app.Activity;
 
import android.graphics.drawable.Drawable;
 
import android.os.Bundle;
 
import android.text.Html;
 
import android.text.Spanned;
 
import android.text.Html.ImageGetter;
 
import android.widget.Button;
 

public class demobutton extends Activity {
 
    /** Called when the activity is first created. */
 
    @Override
 
    public void onCreate(Bundle savedInstanceState) {
 
        super.onCreate(savedInstanceState);
 
        setContentView(R.layout.main);
 
       
 
                ImageGetter imgGetter = new Html.ImageGetter() {
 
                        @Override
 
                        public Drawable getDrawable(String source) {
 
                                Drawable drawable = null;
 
                                drawable = demobutton.this.getResources().getDrawable(
 
                                                Integer.parseInt(source));
 
                                drawable.setBounds(0, 0, drawable.getIntrinsicWidth(),
 
                                                drawable.getIntrinsicHeight());
 
                                return drawable;
 
                        }
 
                };
 
               
                Button button1 = (Button) findViewById(R.id.button1);
 
                StringBuffer dbutton = new StringBuffer();
 
                dbutton.append("<img src=\"").append(R.drawable.button1).append("\"/>").append("<font color=\"6f6f6f\">按鈕上加圖片效果</font>");;
 
                Spanned span = Html.fromHtml(dbutton.toString(), imgGetter, null);
 
                button1.setText(span);
 
                dbutton = null;
 
    }
 
}

 

 http://www.devdiv.com/article-2393-1.html