tap

In my application, i've to detect single, double and triple taps. So, I'm using UITapGestureRecognizer. I'm using the following code: UITapGestureRecognizer *oneTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleSingleTapGestureOnAnimal:)]; oneTap.numberOfTapsRequired = 1; UITapGestureRecognizer *doubleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleDoubleTapGestureOnAnimal:)]; doubleTap.numberOfTapsRequired = 2; [doubleTap requireGestureRecognizerToFail:oneTap]; UITapGestureRecognizer* tripleTap = [[UITapGestureRecognizer alloc]

The new Task.Run static method that's part of .NET 4.5 doesn't seem to behave as one might expect. For example: Task<Int32> t = Task.Run(()=>5); compiles fine, but Task<Int32> t = Task.Run(MyIntReturningMethod); ... public Int32 MyIntReturningMethod() { return (5); } complains that MyIntReturningMethod is returning the wrong type. Perhaps I am just not understanding which overload of Task.Run is being called. But in my mind, my lambda code above looks a lot like a Func<Int32> , and MyIntReturningMethod is definitely compatible with Func<Int32> Any ideas of what's going on? Michael Jeppe Stig

Has anyone seen, tried to implement, or otherwise played with TAP in shell? We're looking to create unit tests across many languages (don't get me started on why this doesn't exist so far), and since we have so much Perl code, we'll be looking at TAP (among others, I imagine). I've found a TAP library for C, Perl, of course, has it built-in, and I've even found an API for Java. But one area missing is shell script testing. Not that I've found much on unit-testing shell scripts, either, but since we do have thousands of lines of shell code, it'd be nice to be able to test it somehow. Chas.

In this code: private async void button1_Click(object sender, EventArgs e) { try { await Task.WhenAll(DoLongThingAsyncEx1(), DoLongThingAsyncEx2()); } catch (Exception ex) { // Expect AggregateException, but got InvalidTimeZoneException } } Task DoLongThingAsyncEx1() { return Task.Run(() => { throw new InvalidTimeZoneException(); }); } Task DoLongThingAsyncEx2() { return Task.Run(() => { throw new InvalidOperation();}); } I expected WhenAll to create and throw an AggregateException , since at least one of the tasks it was awaiting on threw an exception. Instead, I'm getting back a single

移动端的主要问题是click会有200-300ms的延迟，主要原因是苹果手机在设计时，考虑到用户在浏览网页时需要放大，所以，在用户点击的300ms之后，才触发click，如果300ms之内还有click，就会进行放大缩小。 　　但是，问题是大部分时候放大、缩小时不需要的，有时开发者也会禁用他们，那么300ms的延迟就是性能上的损耗的，所以，如何解决这300ms的延迟？ 在移动端，最容易想到的就是使用touchend来替代click，但是touchend是存在很大的问题的，因为touchend之前可能是touchstart、touchmove，最后才是touchend，具体情境可能是用户滑动页面时，不小心在一个按钮那里触发了touchend，这样就执行了，但是用户的本意不是如此。 1.tap事件 　　为了减少这300ms的延迟，tap事件被很多框架（如zepto）封装，来减少这延迟问题， tap事件不是原生的，所以是封装的，那么具体是如何实现的呢？ 主要考虑到下面两点： 按住的事件不能超过延时时间，因为长时间可能就是浏览器的复制、粘贴等操作了。 不能在页面中移动，移动是不能触发tap事件的。 2.点透问题 　　如果我们在移动端所有的click都替换为了tap事件，还是会触发点透问题的，因为实质是： 在同一个z轴上，z-index不同的两个元素，上面的元素是一个绑定了tap事件的

<view class="tabs"> <jc-tabs list="{{tab_list}}" color="#009942" bind:switch="switchTab" view-key="name" scroll="true" active="{{status}}"></jc-tabs> </view> switchTab(e){ this.setData({ status: this.data.tab_list[e.detail.index].id }); this.getList(1); }, [e.detail.index].id index和id互相绑定 来源： https://blog.csdn.net/qq_37995109/article/details/100889620

I have a doubt that is on tap listener implemented on a particular button, or image view or view? because the sites which I surfed only shows for the whole layout and I want my action to be performed on the tapping of a view. please help. Thank you. Kenny Any view can be setup with an onClickListener() which is part of the view class. The easiest way to do it is when you setup the references to your view in the onCreate() method. Here is an example for a image view: ImageView iv = (ImageView) findViewByID(R.id.example); iv.setOnClickListener(new View.OnClickListener() { public void onClick