Android java代码设置背景

设置background（背景）的函数：

imageview.setBackgroundReource(int resid)  
imageview.setBackground(Drawable background)  
imageview.setBackgroundColor(int color)  
imageview.setBackgroundDrawable(Drawable background) //This method was deprecated in API level 16. use setBackground(Drawable) instead

设置src（前景）的函数：

imageview.setImageDrawable(Drawable drawable);  
imageview.setImageBitmap(Bitmap bm);  
imageview.setImageResource(int resId);