随机错过一次点击
我有以下代码片段
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
UITouch *touch = [touches anyObject];
NSUInteger numberTaps = [touch tapCount];
// Tapping
if (numberTaps > 0) {
// do something
}
...
上面的代码基本上检测小图像上的单击（宽度 = 18 和高度 = 36）。它在 90% 的时间内都能检测到单次点击。
但有时它会错过它（随机地）。我必须点击几次才能让它按下一次。
我做错了什么或错过了什么，才能始终如一地 100% 检测到单次点击？
I have the following code snippets
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
UITouch *touch = [touches anyObject];
NSUInteger numberTaps = [touch tapCount];
// Tapping
if (numberTaps > 0) {
// do something
}
...
The above code basically detects a single tap on a small image (width = 18 and height = 36). It works 90% of the time detecting a single tap.
But it sometime misses it (randomly). I have to tap several times before it picks up the single tap.
What did I do wrong or miss so I could consistently detect the single tap 100%?
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您可能错过了点击，因为您的手指不够准确，无法始终点击硬件上的正确位置。我的应用程序中有一些可以点击的小图像，但我经常错过它们。尝试将图像放大以验证它是否始终有效。您可以人为地使图像变大，并在其周围留有空白，以使击球更加准确。
It is possible you are missing the tap because your finger isn't accurate enough to always hit the proper place on the hardware. I have small images in my app which can be tapped, and I often miss them. Try making the image larger to verify if it always works then. You can artificially make an image larger with blank space around it to make hitting it more accurate.