Gallery/AdapterView Child Drawable State-优快云博客

本文探讨了在使用Gallery视图时遇到的问题：当滑动Gallery而非点击按钮时，所有子按钮的状态变为按下状态，同时TextView选中状态改变。文中介绍了尝试通过设置duplicateParentState属性来解决此问题的方法，但发现该属性对pressed和selected状态无效。最终解决方案是创建自定义视图类并重写dispatchSetSelected和dispatchSetPressed方法。

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转自http://stackoverflow.com/questions/3858220/gallery-adapterview-child-drawable-state

I am using a Gallery view where the view corresponding to each item is non-trivial and consists of text as well as multiple buttons.

When I click to drag the gallery view (somewhere not on one of the buttons) the button's drawable state changes to pressed and appears as if all of the buttons are currently being pressed. Additionally, the same behavior happens for the selected state (e.g. all of the text of the child TextViews changes color).

I am trying to prevent this behavior and have found the android:duplicateParentState xml attribute as well as the setDuplicateParentStateEnabled property. This seems like it should accomplish what I am trying to do, but it seems to have no effect.

Any ideas?

Not sure where the duplicateParentState property comes into play, but breaking through the source shows that it is never taken into account for the selected and pressed states. I would up creating a custom view class and overriding the dispatchSetSelected and dispatchSetPressed methods.