解决listview设置背景图片以后，拖动出现黑色的问题。

android接受的颜色： #RGB, #ARGB, #RRGGBB, #AARRGGBB

注意每种写法对应的位数不同。

解决listview设置背景图片以后，拖动出现黑色的问题。

To fix this issue, all you have to do is either disable the cache color hint optimization, if you use a non-solid color background, or set the hint to the appropriate solid color value. You can do this from code (seesetCacheColorHint(int)) or preferably from XML, by using theandroid:cacheColorHintattribute. To disable the optimization, simply use the transparent color#00000000. The following screenshot shows a list withandroid:cacheColorHint="#00000000"set in the XML layout file:

这里的#00000000 应该是#AARRGGBB写法。