Kotlin语言实现单击任意TextVIew切换一个新页面，并且实现颜色变换

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:orientation="vertical" android:layout_height="match_parent">

    <!-- 这里放置你的其他视图组件 -->
    <RadioGroup android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal" >
    <RadioButton android:id="@+id/textView1" android:layout_width="wrap_content" android:button="@null" android:textColor="@color/color" android:checked="true" android:layout_marginHorizontal="20dp" android:layout_height="wrap_content" android:text="First TextView" android:clickable="true" />

    <RadioButton android:id="@+id/textView2" android:layout_width="wrap_content" android:layout_marginHorizontal="20dp" android:button="@null" android:layout_height="wrap_content" android:text="Second TextView" android:textColor="@color/color" android:clickable="true" android:layout_below="@id/textView1" />

    <!-- 更多的 TextView 组件 -->
</RadioGroup>


    <FrameLayout android:id="@+id/container" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_below="@id/textView2" />

</LinearLayout>

创建一个新包 color

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:color="@color/purple_700" android:state_checked="true"/>
    <item android:color="@color/black" android:state_checked="false"/>
</selector>

功能页

class MainActivity2 : AppCompatActivity() {
    
    private lateinit var fragmentManager: FragmentManager
    private val binding by lazy {
    
        ActivityMain2Binding.inflate(layoutInflater)
    }
    override fun onCreate(savedInstanceState: Bundle?) {
    
        super.onCreate(savedInstanceState)
        setContentView(binding.root)
        fragmentManager = supportFragmentManager

        binding.textView1.setOnClickListener {
    
            replaceFragment(HomeFragment())
        }

        binding.textView2.setOnClickListener {
    
            replaceFragment(SecondFragment())
        }
    }
    private fun replaceFragment(fragment: Fragment) {
    
        val transaction: FragmentTransaction = fragmentManager.beginTransaction()
        transaction.replace(R.id.container, fragment)
        transaction.addToBackStack(null)
        transaction.commit()
    }
}