android中Bitmap转换Drawable

Drawable转换为Bitmap

/*** Drawable转换为Bitmap* */public static  Bitmap DrawableToBitmap(Drawable drawable){if(drawable==null)return null;if(drawable instanceof  BitmapDrawable)return ((BitmapDrawable)drawable).getBitmap();Bitmap bitmap=null;//如果是ColorDrawable随便给一个宽高if(drawable instanceof  ColorDrawable)bitmap=Bitmap.createBitmap(2,2,Bitmap.Config.ARGB_8888);elsebitmap=Bitmap.createBitmap(drawable.getIntrinsicWidth(),drawable.getIntrinsicHeight(),Bitmap.Config.ARGB_8888);Canvas canvas=new Canvas(bitmap);//设置绘制的矩形区域drawable.setBounds(0,0,drawable.getIntrinsicWidth(),drawable.getIntrinsicHeight());drawable.draw(canvas);return bitmap;}

/*** Drawable转换为Bitmap* */public static  Bitmap DrawableToBitmap(Context mContext,int ResId){Bitmap bitmap= BitmapFactory.decodeResource(mContext.getResources(),ResId);return bitmap;