Android UI设计--新闻或信息条数的实现

例如短信或者新闻的条数经常做在图片之上，实现方式如下，可以根据不同的图片大小进行调节

    private Bitmap generateNumberIcon(int resId, int newsCount){
    	Bitmap icon = BitmapFactory.decodeResource(getResources(), resId);
    	int iconSize = icon.getWidth();
    	Bitmap mBitmap = Bitmap.createBitmap(iconSize, iconSize, Config.ARGB_8888);
    	Canvas canvas = new Canvas(mBitmap);
    	
    	Paint paint = new Paint();
    	paint.setDither(true);
    	paint.setFilterBitmap(true);
    	Rect src = new Rect(0, 0, iconSize, iconSize);
    	Rect dst = new Rect(0, 0,iconSize, iconSize);
    	canvas.drawBitmap(icon, src, dst, paint);	
    	Paint countPaint = new Paint(Paint.ANTI_ALIAS_FLAG|Paint.DEV_KERN_TEXT_FLAG);
    	countPaint.setColor(getResources().getColor(R.color.red));
    	countPaint.setStyle(Paint.Style.STROKE);
    	countPaint.setTypeface(Typeface.DEFAULT_BOLD);
    	
    	countPaint.setTextSize(iconSize*2/3f);
    	canvas.drawText(String.valueOf(newsCount),iconSize/4 , iconSize*5/6, countPaint);
    	return mBitmap;	
    }

　　参考效果：