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。
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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 (see?setCacheColorHint(int)) or preferably from XML, by using the?android:cacheColorHint?attribute. To disable the optimization, simply use the transparent color?#00000000. The following screenshot shows a list with?android:cacheColorHint="#00000000"?set in the XML layout file:
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这里的#00000000 应该是#AARRGGBB写法。
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