scrollview

Android — ScrollView inside a Gallery

由 自闭症网瘾萝莉.ら 提交于 2020-02-06 05:06:13
问题 So, the goal is to have a scroll view behaving correctly inside a gallery. I'm using an example posted by atraudes which you can see below: public class GalleryFriendlyScrollView extends ScrollView{ private static int NONE = -1; private static int DOSCROLLVIEW = 0; private static int DOGALLERY = 1; private float lastx = 0; private float lasty = 0; private float firstx = 0; private float firsty = 0; private float lastRawx = 0; private float lastRawy = 0; private int gestureRecipient = NONE;

Content in scrollview as a list item disappears when scrolling (swiftui), why?

由 余生颓废 提交于 2020-02-04 05:29:46
问题 Solution by @Asperi, ScrollView().id(UUID().uuidString). There is a scrollview in the list item, when I scroll the list, the content in scrollview disappears. I think the issue is about scrollview & list reusable item conflict. If I remove scrollview(just hstack{}), nothing disappears. So I think it's scrollview's issue. Any ideal? struct ContentView: View { var body: some View { List { ForEach(0...100, id: \.self) { _ in ItemView().padding() } } } } struct ItemView: View { var body: some

Content in scrollview as a list item disappears when scrolling (swiftui), why?

由 微笑、不失礼 提交于 2020-02-04 05:29:21
问题 Solution by @Asperi, ScrollView().id(UUID().uuidString). There is a scrollview in the list item, when I scroll the list, the content in scrollview disappears. I think the issue is about scrollview & list reusable item conflict. If I remove scrollview(just hstack{}), nothing disappears. So I think it's scrollview's issue. Any ideal? struct ContentView: View { var body: some View { List { ForEach(0...100, id: \.self) { _ in ItemView().padding() } } } } struct ItemView: View { var body: some

android 滚动视图（ScrollView）

由 左心房为你撑大大i 提交于 2020-02-03 13:05:03
为了可以让内嵌布局管理器之中加入多个显示的组件，而且又保证程序不这么冗余，所以可以通过 Activity程序进行控制，向内嵌布局管理器中添加多个组件。 ScrollView提供一个显示的容器，可以包含多个组件并进行滚动。 在ScrollView中只能包含一种组件。 在main.xml文件中代码如下： <?xml version="1.0" encoding="utf-8"?> <ScrollView //注意改标签 xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/myscroll" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical"> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:id="@+id/mylinear" android:orientation="vertical"

ReactNative组件之scrollView实现轮播

由 这一生的挚爱 提交于 2020-02-02 21:50:31
想要实现轮播效果，首先安装时间定时器 接下来就是在我们的项目中使用定时器 接下来我们将竖着的轮播图变成横着的 接下来我们调整间距 我们知道轮播图下方，还有5个圆点，那我们怎么做呢？ 拿到每一个圆点 看对应的样式 关于当前样式和小圆点颜色的改变 见成品图 我们要达到的效果是，哪一个轮播图在前面，对应的小圆点就变色 我们在每一帧滚动结束的时候，进行调用对应的函数 通过偏移量与宽度比求对应页面，再更新状态机 最后再看效果图 我们发现我们的轮播图一直都是手动的，我们需要使用定时器让其自动播放 我们设置固定的每一帧的时间 当轮播图挂载上去的时候，我们是要直接插入对应的html值的 当添加定时器对应的页数改变了，对应的状态也是会改变的 当我们手动拖拽轮播图 开始拖拽时停止定时器 当我们停止拖拽 当调用停止拖拽的时候，我们调用定时器让其自动轮播 好了来自ReactNative的轮播图就完成了~ 本文升华自ReactNative视频教程 详细demo见我的github： https://github.com/JserJser/reactWebApp/blob/master/MyApp/scrollView.js 来源： https://www.cnblogs.com/smart-girl/p/9758187.html

Horizontal RecylerView look as ViewPager

由 蹲街弑〆低调 提交于 2020-01-31 19:02:11
问题 I try to convert horizontal RecylerView into ViewPager . (work like horizontal RecylerView look like ViewPager) I'm working on existing project where horizontal RecylerView is already in use and work perfectly as per requirement, but i need to change design of it as RecylerView is horizontal only one item at time should be shown so for user better understanding i need to add one linear layout below item which shows indicator (just like ViewPager) of total items in RecylerView. purpose of

主流界面搭建原理（类似百思不得姐主界面）

由 心已入冬 提交于 2020-01-25 10:42:17
1.项目需求 主界面能左右滚动，还能上下滚动，点击按钮跳转界面。 2.分析界面 点击按钮跳转界面可以自定义UITabBarCotroller来实现； 左右滚动，可以利用scrollView来实现 或 UICollectionView； 上下滚动，用tableView可以实现。 3.选择实现方案 方案一：UITabBarCotroller + scrollView + tableView + titleView(TabBar条)； UIScrollView弊端：没有做离屏渲染优化； 使用scrollView，没有显示的tableView也会渲染，渲染比较耗内存，创建很多对象； 离屏渲染： 如果一个界面,没有显示到屏幕上，不会渲染，如果在屏幕上，就会渲染； 方案二：UITabBarCotroller + UICollectionView + tableView + scrollView(TabBar条) 能扩展标题； UICollectionView好处：优化离屏渲染，并不是少创建UITableView； tableView添加UICollectionView的cell里面。 4.界面搭建实现步骤 4.1 先创建一个UIViewContriller 。 4.2 创建UICollectionView添加到UIViewContriller的View上面；

How to add scrollbar to my dialog in Angular?

由 孤街浪徒 提交于 2020-01-25 06:49:07
问题 I am opening a dialog window using the following function: doOutput(){ this.dialog.open(NgxChartsComponent ) ; } And the HTML code of my NgxChartsComponent is: <!-- The chart type goes in here --> <div> This is a visual representation of a line chart</div> <div style="display: inline-block"> <ngx-charts-line-chart [view]="view" [scheme]="colorScheme" [results]="multi" [gradient]="gradient" [xAxis]="showXAxis" [yAxis]="showYAxis" [legend]="showLegend" [showXAxisLabel]="showXAxisLabel"

Android scroll view does not scroll all the way down

由 故事扮演 提交于 2020-01-25 06:46:31
问题 I have looked at many questions, but none of the solutions listed solved my problems: Scrollview doesn't scroll to the margin at the bottom ScrollView doesn't scroll to the bottom (Android) ScrollView won't scroll all the way to the bottom of my LinearLayout I have an app with the following layout that contains a LinearLayout within a ScrollView <ScrollView android:id="@+id/Scroll" android:layout_width="match_parent" android:layout_height="match_parent" android:fillViewport="true" xmlns

ScrollView vs ListView Performance

由 陌路散爱 提交于 2020-01-24 23:43:26
问题 I have this situation I wanted to discuss: I have a listview that it's purpose is show 25 stores. For the design I want I have: 2 layouts, the first one has: 1 big photo of the store (downloaded from a database). 1 icon if the store belongs to the best rated stores list (that icon is on my app) 1 textview (downloaded string) the second has: 3 textviews.(downloaded string) Everytextview has a custom typeface. As you can Imagine, this is a huge task for each item. My main question is: Wouldn't
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