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framework.scheduler.html
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<!DOCTYPE html>
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<div class="pageId"><span>zh_cn:api:framework.scheduler</span></div>
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<h3 class="toggle">Table of Contents</h3>
<div>
<ul class="toc">
<li class="level1"><div class="li"><a href="#frameworkscheduler">framework.scheduler</a></div>
<ul class="toc">
<li class="level2"><div class="li"><a href="#schedulerscheduleupdateglobal">scheduler.scheduleUpdateGlobal</a></div></li>
<li class="level2"><div class="li"><a href="#schedulerscheduleglobal">scheduler.scheduleGlobal</a></div></li>
<li class="level2"><div class="li"><a href="#schedulerunscheduleglobal">scheduler.unscheduleGlobal</a></div></li>
<li class="level2"><div class="li"><a href="#schedulerperformwithdelayglobal">scheduler.performWithDelayGlobal</a></div></li>
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<h1 class="sectionedit1" id="frameworkscheduler">framework.scheduler</h1>
<div class="level1">
<p>
全局计时器、计划任务
</p>
<p>
<strong>«该模块在框架初始化时不会自动载入»</strong>
</p>
<hr />
</div>
<h2 class="sectionedit2" id="schedulerscheduleupdateglobal">scheduler.scheduleUpdateGlobal</h2>
<div class="level2">
<p>
计划一个全局帧事件回调，并返回该计划的句柄。
</p>
<p>
格式：
</p>
<pre class="code lua">handle <span class="sy0">=</span> scheduler<span class="sy0">.</span>scheduleUpdateGlobal<span class="br0">(</span>回调函数<span class="br0">)</span></pre>
<p>
全局帧事件在任何场景中都会执行，因此可以在整个应用程序范围内实现较为精确的全局计时器。
</p>
<p>
该函数返回的句柄用作 scheduler.unscheduleGlobal() 的参数，可以取消指定的计划。
</p>
<hr />
</div>
<h2 class="sectionedit3" id="schedulerscheduleglobal">scheduler.scheduleGlobal</h2>
<div class="level2">
<p>
计划一个以指定时间间隔执行的全局事件回调，并返回该计划的句柄。
</p>
<p>
格式：
</p>
<pre class="code lua">handle <span class="sy0">=</span> scheduler<span class="sy0">.</span>scheduleGlobal<span class="br0">(</span>回调函数<span class="sy0">,</span> 间隔时间<span class="br0">)</span></pre>
<p>
用法示例：
</p>
<pre class="code lua"><span class="kw1">local</span> <span class="kw1">function</span> onInterval<span class="br0">(</span>dt<span class="br0">)</span>
<span class="kw1">end</span>
<span class="co1">-- 每 0.5 秒执行一次 onInterval()</span>
<span class="kw1">local</span> handle <span class="sy0">=</span> scheduler<span class="sy0">.</span>scheduleGlobal<span class="br0">(</span>onInterval<span class="sy0">,</span> <span class="nu0">0.5</span><span class="br0">)</span></pre>
<hr />
</div>
<h2 class="sectionedit4" id="schedulerunscheduleglobal">scheduler.unscheduleGlobal</h2>
<div class="level2">
<p>
取消一个全局计划。
</p>
<p>
格式：
</p>
<pre class="code lua">scheduler<span class="sy0">.</span>unscheduleGlobal<span class="br0">(</span>句柄<span class="br0">)</span></pre>
<p>
scheduler.unscheduleGlobal() 的参数就是 scheduler.scheduleUpdateGlobal() 和 scheduler.scheduleGlobal() 的返回值。
</p>
<hr />
</div>
<h2 class="sectionedit5" id="schedulerperformwithdelayglobal">scheduler.performWithDelayGlobal</h2>
<div class="level2">
<p>
计划一个全局延时回调，并返回该计划的句柄。
</p>
<p>
格式：
</p>
<pre class="code lua">handle <span class="sy0">=</span> scheduler<span class="sy0">.</span>performWithDelayGlobal<span class="br0">(</span>回调函数<span class="sy0">,</span> 延迟时间<span class="br0">)</span></pre>
<p>
scheduler.performWithDelayGlobal() 会在等待指定时间后执行一次回调函数，然后自动取消该计划。
</p>
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<div class="docInfo">zh_cn/api/framework.scheduler.txt · Last modified: 2013/08/16 14:50 by Yu Lei Liao</div>
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