ChipGroup单选 [英] ChipGroup single selection

问题描述

如何强制ChipGroup像RadioGroup一样，始终具有至少一个选定的项目?如果在Chip上单击两次，则设置setSingleSelection(true)还会增加不选择任何内容的可能性.

How can I force a ChipGroup to act like a RadioGroup as in having at least one selected item always? Setting setSingleSelection(true) also adds the possibility to have nothing selected if you click twice on a Chip.

推荐答案

要防止取消选择所有筹码，可以使用方法 setSelectionRequired :

To prevent all chips from being deselected you can use the method setSelectionRequired:

chipGroup.setSelectionRequired(true)

您还可以使用 app:selectionRequired 属性在布局中对其进行定义:

You can also define it in the layout using the app:selectionRequired attribute:

<com.google.android.material.chip.ChipGroup
    app:singleSelection="true"
    app:selectionRequired="true"
    app:checkedChip="@id/..."
    ..>

注意:这要求最低版本为 1.2.0-alpha02

Note: This requires a minimum of version 1.2.0-alpha02

这篇关于ChipGroup单选的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！