Android ListView选择动画
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12-10-2019 - |
题
当用户在listView中选择元素时,如何设置动画?
我正在制作自己的listView适配器,以将粉红色背景和奇数行设置为带有紫色背景的行。唯一的问题是,我不确定如何为用户单击(“触摸”)元素设置动画。
我考虑过在选择时实现OnTouchListener并将背景更改为绿色,但是由于实现了OnTouchListener,行内的按钮可能不再起作用。这是真的?
代码:
public class MyAdapter extends BaseAdapter {
public View getView(int position, View convertView, ViewGroup parent) {
// position is the element's id to use
// convertView is either null -> create a new view for this element!
// or not null -> re-use this given view for element!
// parent is the listview all the elements are in
if (convertView == null) {
convertView = mInflater.inflate(R.layout.your_layout, null);
// here you must do whatever is needed to populate the elements of your
// list element layout
...
} else {
// re-use the given convert view
// here you must set all the elements to the required values
}
// your drawable here for this element
convertView.setBackground(...);
// maybe here's more to do with the view
return convertView;
}
}
解决方案
使用statelistable可用于state_selected的定义项目。
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_selected="true" android:drawable="@drawable/selected" />
...Other States...
<item android:drawable="@drawable/normal" />
</selector>
This way, when the list item is selected it will use that "selected" graphic automatically.
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