如何在android中更改按钮的背景并在几秒钟后保留它

<Button
    android:id="@+id/myButton"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="点击按钮"
    android:background="@drawable/initial_background" />

<animation-list xmlns:android="http://schemas.android.com/apk/res/android" android:oneshot="true">
    <item android:drawable="@drawable/initial_background" android:duration="1000" />
    <item android:drawable="@drawable/new_background" android:duration="1000" />
</animation-list>

Button myButton = findViewById(R.id.myButton);
AnimationDrawable animationDrawable = (AnimationDrawable) getResources().getDrawable(R.drawable.button_animation);
myButton.setBackground(animationDrawable);

Handler handler = new Handler();
handler.postDelayed(new Runnable() {
    @Override
    public void run() {
        animationDrawable.stop(); // 停止动画
        myButton.setBackgroundResource(R.drawable.new_background); // 设置按钮保留的背景
    }
}, 5000); // 5000毫秒后执行动画停止并设置按钮保留的背景