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Android: Getting a count of the visible children in a listview

由 女生的网名这么多〃 提交于 2019-12-29 04:15:06
问题 Is there are way to get a count of the number of visible listview children? I have a listview with info linked to a database that can change at any time. When the database is changed, I send out a broadcast notifying the ui class handling the list view. The child element relating to the changed data is then updated. I am achieving this by giving each listview item a tag, and then iterating over the listviews to find the row matching the tag from the broadcast. I want to only iterate over the

WinForm 之 窗口最小化到托盘及右键图标显示菜单

由 假如想象 提交于 2019-12-26 21:16:45
　　Form最小化是指整个Form都缩小到任务栏上，但是窗体以Form的标题栏形式显示在任务栏上， 若是想让Form以Icon的形式显示在任务栏右下角，则需要给Form添加一个NotifyIcon控件。 一、添加NotifyIcon控件 　　 1 如下图为窗体添加一个 NotifyIcon 控件，并指定 Icon 和 Text 属性，如下图： 　　 　　 2 在需要窗体最小化到托盘的处理代码中，添加如下代码： if(this.WindowState==FormWindowState.Normal&&this.Visible==true) { this.notifyIcon1.Visible=true;//在通知区显示Form的Icon this.WindowState=FormWindowState.Minimized; this.Visible=false; this.ShowInTaskbar=false;//使Form不在任务栏上显示 } 　　 　　 3 可以为 添加NotifyIcon控件指定双击事件，双击还原，代码如下： /// <summary> /// 添加双击托盘图标事件（双击显示窗口） /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void

OnPause() different behaviors with 8 oreo and 7 nougat

由 你离开我真会死。 提交于 2019-12-24 08:56:15
问题 I am trying to enable view when onPause is called by AppSwitcherFrame.Visibility = ViewStates.Visible; and when I enter task manager in the android 8, 8.1 it gets visible and everything works as intended. However, when I am testing it with 7.1 nougat or kitkat then AppSwitcherFrame just blinks and dissapears, in task manager my frame is not visible. Do you have any solutions? 来源： https://stackoverflow.com/questions/51285368/onpause-different-behaviors-with-8-oreo-and-7-nougat

OnPause() different behaviors with 8 oreo and 7 nougat

由 吃可爱长大的小学妹 提交于 2019-12-24 08:52:53
问题 I am trying to enable view when onPause is called by AppSwitcherFrame.Visibility = ViewStates.Visible; and when I enter task manager in the android 8, 8.1 it gets visible and everything works as intended. However, when I am testing it with 7.1 nougat or kitkat then AppSwitcherFrame just blinks and dissapears, in task manager my frame is not visible. Do you have any solutions? 来源： https://stackoverflow.com/questions/51285368/onpause-different-behaviors-with-8-oreo-and-7-nougat

XL2003: Changing ThisWorkbook.Windows().Visible property during Workbook_BeforeClose event prevents workbook from closing

由 情到浓时终转凉″ 提交于 2019-12-24 01:18:30
问题 As title. This is driving me mad and I can't find any reference to it anywhere else on the web. I have a VBA-laden workbook which is normally hidden through use of: ThisWorkbook.Windows(1).Visible = False However, when the workbook is closed I need it to revert to a default state whereby its window is visible and a "special" worksheet which instructs the user on enabling macros is shown. This is to provide guidance should the next user open the workbook with macros disabled. When the workbook

Performance of jquery visible

由 China☆狼群 提交于 2019-12-23 18:55:41
问题 I have a bunch of checkboxes on a page, and I only show a subset of those checkboxes at a time. I then perform some action which loops through all of the checkboxes and sees if they are checked or not: e.g. $(".delete_items").click( function() { $('.checkboxes' ).each(function(){ //do stuff } } Then I was thinking, well since the user can never interact with the hidden checkboxes, that adding :visible to checkboxes would speed up the loop e.g. $(".delete_items").click( function() { $('

COM Interop & Outlook - Make Outlook Visible?

由 99封情书 提交于 2019-12-23 16:43:26
问题 I'm automating Outlook from a VB.NET program, transferring items into the calendar and contacts at the user's request. It's all working, that isn't the problem; the problem is that automating Outlook like this when it wasn't already open creates a hidden instance. I can perhaps understand how this could be useful, to stop the user closing it down while you're still working on it, but since Outlook appears to force one instance only, if the user tries to inspect the changes made while my

Get visible height of an element instead of its actual height with jquery

由 不羁的心 提交于 2019-12-23 08:08:28
问题 This post is related to this one. Please consider reading it as well. :-) In the post I linked to, I figured the solution to my problem would be to change the target of a link if the visible height of a div is greater than that of another div. In my layout, all the divs I'm referring to have a height of 1100px. But that's not what I want to get. I'd like the script to get height of the div that is currently visible to the visitor, not its real height. Is there a way to do it using jQuery?

How to add some custom CSS for the last child only if visible with Jquery?

由 橙三吉。 提交于 2019-12-22 13:31:35
问题 I am allowing users to make parts of a list hidden/visible etc. Now here is my list: Basic list, but the very end list item has some custom CSS "border-bottom: none" - just to make it a bit more nicer looking. <ul> <li class="item">Item</li> <li class="widget">widget</li> <li class="item">Item</li> <li class="item">Item</li> <li class="widget">Widget</li> <li class="widget">Widget</li> </ul> When I use the last selector, to add some custom CSS, it works perfect. My problem is when I hide the

How to add some custom CSS for the last child only if visible with Jquery?

由 元气小坏坏 提交于 2019-12-22 13:31:34
问题 I am allowing users to make parts of a list hidden/visible etc. Now here is my list: Basic list, but the very end list item has some custom CSS "border-bottom: none" - just to make it a bit more nicer looking. <ul> <li class="item">Item</li> <li class="widget">widget</li> <li class="item">Item</li> <li class="item">Item</li> <li class="widget">Widget</li> <li class="widget">Widget</li> </ul> When I use the last selector, to add some custom CSS, it works perfect. My problem is when I hide the
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