在Button任意位置加图片效果

通常情况会想到drawableLeft，drawableTop,drawableRight,drawableBotton，这样是可以做，但只能在四个位置。 
下面这种办法可以实现任意位置： 

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 btn = (Button) findViewById(R.id.button1);
                StringBuffer sb = new StringBuffer();
                sb.append("<img src=\"").append(R.drawable.button1).append("\"/>").append("<font color=\"6f6f6f\">按钮上加图片效果</font>");;
                Spanned span = Html.fromHtml(sb.toString(), imgGetter, null);
                btn.setText(span);
                sb = null;
    }
}

 
采用Spanned也不是什么新鲜事了，呵呵。这里只提供一种思路。不止Button，任意可以显示文字的View都可以这样做。

转自：http://gundumw100.iteye.com/blog/1205578