如何在标题中创建下拉菜单,如图所示?
为此使用Popupwidow,您可以将弹出窗口显示到屏幕的任何位置
跟随此链接Popupwidow:
https://developer.android.com/reference/android/widget/PopupWindow
对于Popupwidow教程,
https://medium.com/@evanbishop/popupwindow-in-android-tutorial-6e5a18f49cc7