标签下划线返回屏幕旋转时的第一个标签

Question

I haven't used tabs in my project because of some UI constraint, instead I have used three buttons with viewpager which work as a tab. Below the three buttons I have used three views which are working as tabs underline.

The problem is, when the screen is rotated, correct viewpager is showing up, but underline is coming below the first button, however, it should be below the currently selected button.

Answer 1

您必须使用onRestoreInstanceState将视图位置编号（例如选项卡编号2或选项卡编号3）存储在一个包中，并从onSaveInstanceState中读取它。