Android 安卓列表视图。如何更改手动选择的项目的背景颜色
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Android ListView. How to change background color of manually selected item
提问by bukka.wh
Can You help me please. I need to change background color of my list view item which is selected manually by setSelection(int pos)function and I need to stay with new color until new setSelection call. I have read some topics of how to do this, but I still have no succes. Thanks!
你能帮我吗。我需要更改由setSelection(int pos)函数手动选择的列表视图项的背景颜色，并且我需要保持新颜色，直到新的 setSelection 调用。我已经阅读了一些关于如何做到这一点的主题，但我仍然没有成功。谢谢！
回答by T.V.
I've managed to accomplish that by making several selectors for the different states
我已经通过为不同的状态制作几个选择器来实现这一点
first put this in your listview
首先把它放在你的列表视图中
android:listSelector="@drawable/list_selector"
Then create xml files in drawable to control the diferent states
然后在drawable中创建xml文件来控制不同的状态
@drawable/list_selector
@drawable/list_selector
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@drawable/list_item_bg_normal" android:state_activated="false"/>
<item android:drawable="@drawable/list_item_bg_pressed" android:state_pressed="true"/>
<item android:drawable="@drawable/list_item_bg_pressed" android:state_activated="true"/>
</selector>
@drawable/list_item_bg_normal
@drawable/list_item_bg_normal
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<gradient
android:startColor="@color/list_background"
android:endColor="@color/list_background"
android:angle="90" />
</shape>
@drawable/list_item_bg_pressed
@drawable/list_item_bg_pressed
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<gradient
android:startColor="@color/list_background_pressed"
android:endColor="@color/list_background_pressed"
android:angle="90" />
</shape>
In your ListView Selection
在您的 ListView 选择中
listView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,long arg3) {
view.setSelected(true);
...
}
}
Don't forget to add list_background_pressedand list_backgroundto your values/color.xml or just set the color manually in each file.
不要忘记将list_background_pressed和list_background添加到您的 values/color.xml 或只是在每个文件中手动设置颜色。
And I Believe that when you use setSelection(int pos)that will automatically uset the layout you've set as selectected.
而且我相信，当您使用setSelection(int pos) 时，它会自动使用您设置为已选择的布局。
Hope it helps.
希望能帮助到你。
回答by nandish
listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
if (updateview != null) updateview.setBackgroundColor(Color.TRANSPARENT);
updateview = view;
view.setBackgroundColor(Color.CYAN);
}
});
