android - Android: How to Make A Drawable Selector

Question

I feel like this is kind of a silly question, but here I go anyways. I have an image button, and I want to be able to change it's image everytime it is clicked. The API seems to say that the best way to go about doing this is to create xml resource in the drawable folder that contains a selector and values. However when I go to make a new android xml resource, there's no option for drawables. What am I missing?

Answer 1

您可以在 Android Studio 中添加它，使用Right click on project structure -> New -> Drawable resource file. 它应该如下所示：

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_enabled="false" 
        android:drawable="@drawable/cell_top_selected" />
    <item android:drawable="@drawable/cell_top" />
</selector>

Answer 2

你也可以试试这个作为选择器

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <!-- pressed -->
    <item android:drawable="@drawable/button_1_selected" android:state_pressed="true"/>
    <!-- focused -->
    <item android:drawable="@drawable/button_1_normal" android:state_focused="true"/>
    <!-- default -->
    <item android:drawable="@drawable/button_1_normal"/>

</selector>