iOS UIView的Touch事件有哪几种触摸事件？

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处理事件的方法

<ul>
<li>UIView是UIResponder的子类，可以覆盖下列4个方法处理不同的触摸事件</li>
</ul>

<pre><code class=""language-objectivec"" lang=""objectivec""> //一根或者多根手指开始触摸view
– (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
//一根或者多根手指在view上移动
– (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
//一根或者多根手指离开view
– (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
//触摸结束前，某个系统事件(例如电话呼入)会打断触摸过程
– (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event
</code></pre>

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