[Android]开关控件Switch

<Switch
        android:id="@+id/switch1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:checked="true"
        android:track="@drawable/selector"
        android:thumb="@drawable/rbzhong"
        />

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
  <item android:drawable="@drawable/shape1" android:state_checked="true"/>
  <item android:drawable="@drawable/shape2" android:state_checked="false"/>
</selector>

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    <corners android:radius="45dp"/>
    <stroke android:width="2dp" android:color="#ff99cc"/>
    <gradient android:startColor="#ffcccc" android:centerColor="#ff6699" android:endColor="#ff3399"></gradient>
</shape>

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    <solid android:color="@color/white"/>
      <corners android:radius="45dp"/>
    <stroke android:width="2dp" android:color="#ff99cc"/>
</shape>

val switch1:Switch=findViewById(R.id.switch1)
        switch1.setOnCheckedChangeListener { buttonView, isChecked ->
            when(isChecked){
                true->{Toast.makeText(this,"true",Toast.LENGTH_SHORT).show()}
                false->{Toast.makeText(this,"false",Toast.LENGTH_SHORT).show()}
            }
        }