scrollview

问题 In React Native, I have a screen with a ScrollView : let scrollView; let myComponent2; function onPress() { myComponent2.measure((frameOffsetX, frameOffsetY, width, height, pageOffsetX, pageOffsetY) => { scrollView.scrollTo({ y: frameOffsetY }); } function MyScrollView() { return ( <ScrollView ref={ref => scrollView = ref}> <MyButton onPress={onPress} /> <MyComponent1 /> <MyComponent2 ref={ref => myComponent2 = ref} /> <MyComponent3 /> </ScrollView> ); }; And MyButton is defined like this:

问题 I've included to my project : "import QtQuickQontrols 1.4" But now I need to use ScrollBar , and for this, I need to include "import QtQuickControls 2.2" But when I include version 2.2 and delete 1.4, my project is ruined... MenuBar, TableView is under errors! Ok, when I include both this version it's errors , too! I did run qmake, and give me some advice what should I do to implement my ScrollBar. I've tried to add ScrollView, but inside this it doesn't work : .... ScrollBar.vertical:

问题 Is there a way to build UI elements in SwiftUI inside scroll view with bottom Alignment? My use case: I have a screen where the screen has Spacer ( What ever is left after allocating below elements ) LogoView Spacer() - 30 Some Text - 4/5 lines Spacer() - 50 (this will be calculated off of GR size Height) HStack with Two Button - This should be pinned to bottom of view / ScrollView I would like to know how Can I pin the HStack view to ScrollView Bottom I've replicated my setup and reproduced

问题 Is there a way to build UI elements in SwiftUI inside scroll view with bottom Alignment? My use case: I have a screen where the screen has Spacer ( What ever is left after allocating below elements ) LogoView Spacer() - 30 Some Text - 4/5 lines Spacer() - 50 (this will be calculated off of GR size Height) HStack with Two Button - This should be pinned to bottom of view / ScrollView I would like to know how Can I pin the HStack view to ScrollView Bottom I've replicated my setup and reproduced

问题 DynamicScalingView is a child view with two buttons designed to have equal width & height using preferencekey Issue: When DynamicScalingView is embedded in NavigationView it not longer adapts to intrinsic and increases its frame size. Current implementation without Navigation works fine but would like to understand how to fix this issue when embedded in NavigationView Uncomment NavigationView in sample view to reproduce the issue DynamicScalingView should adapt to Dynamic font size and

问题 I am trying to move textfields up while showing the keyboard. I am doing login screen in react native application, So, I have added Scrollview . But, Its scrolling for all devices. But, I need only for iPhone 5s device only. Even I tried with KeyboardAvoidingView , But, due to this entire data is overlapping. Any suggestions to avoid this issue? 回答1: You have to use KeyboardAvoidingView but not with scrollview because scrollview does not have a height. If you have to use KeyboardAvoidingView

问题 I am trying to move textfields up while showing the keyboard. I am doing login screen in react native application, So, I have added Scrollview . But, Its scrolling for all devices. But, I need only for iPhone 5s device only. Even I tried with KeyboardAvoidingView , But, due to this entire data is overlapping. Any suggestions to avoid this issue? 回答1: You have to use KeyboardAvoidingView but not with scrollview because scrollview does not have a height. If you have to use KeyboardAvoidingView

问题 I want display or hide items by scroll direction just like safari. Hide something when scroll up, and show it when scroll down. 回答1: You would use GeometryReader to get the global position of one in the views in the ScrollView to detect the scroll direction. The code below will print out the current midY position. Dependent on the +/- value you could display or hide other views. struct ContentView: View { var body: some View { ScrollView{ GeometryReader { geometry in Text("Top View \(geometry

问题 I want display or hide items by scroll direction just like safari. Hide something when scroll up, and show it when scroll down. 回答1: You would use GeometryReader to get the global position of one in the views in the ScrollView to detect the scroll direction. The code below will print out the current midY position. Dependent on the +/- value you could display or hide other views. struct ContentView: View { var body: some View { ScrollView{ GeometryReader { geometry in Text("Top View \(geometry

问题 I put a slider on a CustomScollView, When I drag the slider, the scrollview will scroll up and down slightly, so my question is When I drag the slider, how to fibidden scroll of the scrollview? This slider is custom slider which extends RenderConstrainedBox class _RenderCupertinoSlider extends RenderConstrainedBox { _RenderCupertinoSlider(){ _drag = new HorizontalDragGestureRecognizer() ..onStart = _handleDragStart ..onUpdate = _handleDragUpdate ..onEnd = _handleDragEnd; }