android 设计带图片的文本框代码

android 设计带图片的文本框代码
基本原理
自定义一个IconTextView类继承自TextView，添加iconsrc属性，表示图片。
重新onDraw方法，将图片绘制到textVIew前面,然后将textView右移。
废话不多说了，直接代码就明白。
转自：http://blog.csdn.net/hopezhangbo/article/details/7351290

<div class="dp-highlighter bg_java"><div class="bar"><div class="tools"><b>[java]</b> <a href="#" class="ViewSource" title="view plain" onclick="dp.sh.Toolbar.Command('ViewSource',this);return false;">view plain</a><a href="#" class="CopyToClipboard" title="copy" onclick="dp.sh.Toolbar.Command('CopyToClipboard',this);return false;">copy</a><a href="#" class="PrintSource" title="print" onclick="dp.sh.Toolbar.Command('PrintSource',this);return false;">print</a><a href="#" class="About" title="?" onclick="dp.sh.Toolbar.Command('About',this);return false;">?</a><div style="position: absolute; left: 0px; top: 0px; width: 0px; height: 0px; z-index: 99;"><embed id="ZeroClipboardMovie_2" src="http://static.blog.csdn.net/scripts/ZeroClipboard/ZeroClipboard.swf" loop="false" menu="false" quality="best" bgcolor="#ffffff" width="0" height="0" name="ZeroClipboardMovie_2" align="middle" allowscriptaccess="always" allowfullscreen="false" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" flashvars="id=2&width=0&height=0" wmode="transparent"></div></div></div><ol start="1" class="dp-j"><li class="alt"><span><span>  </span></span></li></ol></div><pre name="code" class="java" style="background-color: rgb(255, 255, 255); display: none;">

package com.zb;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Rect;
import android.graphics.drawable.BitmapDrawable;
import android.util.AttributeSet;
import android.view.View;
import android.widget.TextView;
public class IconTextView extends TextView {
	
	private final String nameSpace="http://com.zb.text";
	
	//保存图像资源ID的变量
	private int resourceId=0;
	
	private Bitmap bitmap;
	public IconTextView(Context context, AttributeSet attrs) {
		super(context, attrs);
		resourceId=attrs.getAttributeResourceValue(nameSpace, "iconSrc", 0);//获取图像资源的值
		if(resourceId!=0)
			bitmap=BitmapFactory.decodeResource(getResources(), resourceId);
		
	}
	
	@Override
	protected void onDraw(Canvas canvas) {
		if(bitmap!=null){
			Rect src=new Rect();//原图区域
			Rect target=new Rect();//目标区域
			
			src.left=0;
			src.top=0;
			src.right=bitmap.getWidth();
			src.bottom=bitmap.getHeight();
			
			int textHeight=(int) getTextSize();
			target.left=0;
			
			//计算图像复制区域的纵坐标，
			target.top=(int) (((getMeasuredHeight()-getTextSize())/2)+1);
			
			target.bottom=target.top+textHeight;
			target.right=(int) (textHeight*((float)bitmap.getWidth()/bitmap.getHeight()));
			
			//绘制
			canvas.drawBitmap(bitmap, src, target, getPaint());
			//向右移动TextView的的距离
			canvas.translate(target.right+2,0);
			
		}
		super.onDraw(canvas);
	}
	
}

[plain] view plaincopyprint?
  
    xmlns:zb="http://com.zb.text"  
    android:layout_width="fill_parent"  
    android:layout_height="fill_parent"  
    android:orientation="vertical" >  
  
    
        android:id="@+id/iconText1"  
        android:layout_width="fill_parent"  
        android:layout_height="wrap_content"  
        zb:iconSrc="@drawable/small"  
        android:text="妞给爷笑一个" />  
      
    
        android:id="@+id/iconText1"  
        android:layout_width="fill_parent"  
        android:layout_height="wrap_content"  
        zb:iconSrc="@drawable/small"  
        android:textSize="30dp"  
        android:text="妞给爷笑一个" />  
  
  


    
    
    



[java] view plaincopyprint?






"code" class="java" style="background-color: rgb(255, 255, 255); ">
"code" class="java" style="background-color: rgb(255, 255, 255); ">"font-family: monospace; white-space: pre; ">代码很简单把。  

"code" class="java" style="background-color: rgb(255, 255, 255); ">布局文件

"code" class="java" style="background-color: rgb(255, 255, 255); ">

"code" class="java" style="background-color: rgb(255, 255, 255); ">这里需要几个地方，namespace xmlns:zb="http://com.zb.text"要和代码里面定义的一样。

"code" class="java" style="background-color: rgb(255, 255, 255); ">ok！！