custom-view

问题 Actually this question or this puzzle needs the heroes in mathematics :) I have some image and i want to add some selection box to make a crop .. for that i want to control from point 2 to scale horizontally or vertically .. I find some nice code but it is make scaling eventually in x and y with each together so i am making some manipulation to be able scale any axis dependently .. I have get success to do that in Y axis but no success for X axis This is the code : case MotionEvent.ACTION

来源： https://stackoverflow.com/questions/63775522/nsmenuitem-with-custom-view-in-macos-11-big-sur

来源： https://stackoverflow.com/questions/63775522/nsmenuitem-with-custom-view-in-macos-11-big-sur

来源： https://stackoverflow.com/questions/63775522/nsmenuitem-with-custom-view-in-macos-11-big-sur

来源： https://stackoverflow.com/questions/63775522/nsmenuitem-with-custom-view-in-macos-11-big-sur

来源： https://stackoverflow.com/questions/63775522/nsmenuitem-with-custom-view-in-macos-11-big-sur

来源： https://stackoverflow.com/questions/63775522/nsmenuitem-with-custom-view-in-macos-11-big-sur

来源： https://stackoverflow.com/questions/63775522/nsmenuitem-with-custom-view-in-macos-11-big-sur

问题 Bellow code is adding a customView to navigationItem successfully, but when trying to access the customView it always return nil override func viewDidLoad() { super.viewDidLoad() let customView = getCustomView() // supposed that the function return a custom view let actionButton = UIBarButtonItem(customView: customView) self.navigationItem.rightBarButtonItem = actionButton // successfully added customView print(navigationItem.rightBarButtonItem?.customView) // print always nil } Result : nil

问题 I have created a simple custom view that contains a RelativeLayout and an EditText : <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="wrap_content"> <EditText android:id="@+id/edt_content" android:layout_width="match_parent" android:layout_height="wrap_content"/> </RelativeLayout> Also I have added some custom attributes in res/values/attrs.xml and I retrieve these attributes in my custom view constructor and