Tag: 工具栏

从Kotlin类调用方法

我有一个util Kotlin类，我设置工具栏的标题，隐藏或显示工具栏取决于片段： class MyToolbarUtils() { fun hideToolbar(activity: Activity) { (activity as MainActivity).supportActionBar!!.hide() } fun showToolbar(activity: Activity, tag: String) { setToolbarTitle(tag, activity) (activity as MainActivity).supportActionBar!!.show() } fun setToolbarTitle(tag: String, activity: Activity) { var title = "" when (tag) { "Main_fragment" -> title = activity.resources.getString(R.string.Main_screen) "Add_note" -> title = activity.resources.getString(R.string.Add_note) } activity.title = title } } 如何从Fragment调用showToolbar（…）？ […]