Drawable 選擇器 Android

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_checked="true">
        <shape android:shape="rectangle">
            <corners android:radius="4dp" />
            <stroke android:width="1dp" android:color="@android:color/black" />
        </shape>
    </item>

    <item android:state_checked="false" >
        <shape android:shape="rectangle">
            <corners android:radius="4dp" />
            <stroke android:width="1dp" android:color="@android:color/white" />
        </shape>
    </item>
</selector>

Color 選擇器 Android

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:color="#7C7C7C" android:state_checked="false" />
    <item android:color="#359DF5" android:state_checked="true" />
</selector>

此篇文章對(duì)選擇器狀態(tài)進(jìn)行了講解。

去掉 RadioButton 默認(rèn)的選擇器 參考：
XML 布局中 android:button="@null"
Java 代碼 radioButton.setButtonDrawable(new StateListDrawable());
Kotlin 代碼 radioButton { buttonDrawable = StateListDrawable() }

代碼設(shè)置 TextView TabHost 的 Color Selector:
Java 代碼 textView.setTextColor(AppCompatResources.getColorStateList(context, R.color.selector));
Kotlin 代碼 radioButton { setTextColor(AppCompatResources.getColorStateList(ctx, R.color.selector)) }