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8 changes: 4 additions & 4 deletions 2018/03/03/USB调试Android设备时遇到no permissions (verify udev rules)的解决办法/index.html
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6 changes: 3 additions & 3 deletions 2018/08/03/如何防止开发者选项关闭动画后使其失效/index.html
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<meta property="og:locale" content="zh_CN">
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})(window)</script><script>document.oncontextmenu=function(){return!1}</script><script>document.addEventListener("DOMContentLoaded",function(){const e=document.getElementById("busuanzi_value_site_uv"),t=document.getElementById("busuanzi_value_site_pv"),n=new MutationObserver(e=>{for(let t of e)if("childList"===t.type){n.disconnect(),t.target.innerHTML=parseInt(t.target.innerHTML)+1e5;break}}),i=new MutationObserver(e=>{for(let t of e)if("childList"===t.type){i.disconnect(),t.target.innerHTML=parseInt(t.target.innerHTML)+3e5;break}}),r={childList:!0};n.observe(e,r),i.observe(t,r)});</script><meta name="referrer" content="no-referrer" /><meta name="generator" content="Hexo 6.3.0"></head><body><div id="sidebar"><div id="menu-mask"></div><div id="sidebar-menus"><div class="avatar-img is-center"><img src="/img/avatar-ysy.png" onerror="onerror=null;src='/img/friend_404.gif'" alt="avatar"/></div><div class="sidebar-site-data site-data is-center"><a href="/archives/"><div class="headline">文章</div><div class="length-num">93</div></a><a href="/tags/"><div class="headline">标签</div><div class="length-num">15</div></a><a href="/categories/"><div class="headline">分类</div><div class="length-num">0</div></a></div><hr class="custom-hr"/><div class="menus_items"><div class="menus_item"><a class="site-page" href="/"><i class="fa-fw fas fa-home"></i><span> Home</span></a></div><div class="menus_item"><a class="site-page" href="/archives/"><i class="fa-fw fas fa-archive"></i><span> Archives</span></a></div><div class="menus_item"><a class="site-page" href="/tags/"><i class="fa-fw fas fa-tags"></i><span> Tags</span></a></div><div class="menus_item"><a class="site-page" href="/gallery/"><i class="fa-fw fas fa-images"></i><span> Gallery</span></a></div><div class="menus_item"><a class="site-page" href="/about/"><i class="fa-fw fas fa-heart"></i><span> About</span></a></div></div></div></div><div class="post" id="body-wrap"><header class="post-bg" id="page-header" style="background-image: url('/img/home-bg.jpg')"><nav id="nav"><span id="blog-info"><a href="/" title="Pig Cat"><span class="site-name">Pig Cat</span></a></span><div id="menus"><div id="search-button"><a class="site-page social-icon search" href="javascript:void(0);"><i class="fas fa-search fa-fw"></i><span> Search</span></a></div><div class="menus_items"><div class="menus_item"><a class="site-page" href="/"><i class="fa-fw fas fa-home"></i><span> Home</span></a></div><div class="menus_item"><a class="site-page" href="/archives/"><i class="fa-fw fas fa-archive"></i><span> Archives</span></a></div><div class="menus_item"><a class="site-page" href="/tags/"><i class="fa-fw fas fa-tags"></i><span> Tags</span></a></div><div class="menus_item"><a class="site-page" href="/gallery/"><i class="fa-fw fas fa-images"></i><span> Gallery</span></a></div><div class="menus_item"><a class="site-page" href="/about/"><i class="fa-fw fas fa-heart"></i><span> About</span></a></div></div><div id="toggle-menu"><a class="site-page" href="javascript:void(0);"><i class="fas fa-bars fa-fw"></i></a></div></div></nav><div id="post-info"><h1 class="post-title">如何防止开发者选项关闭动画后使其失效</h1><div id="post-meta"><div class="meta-firstline"><span class="post-meta-date"><i class="far fa-calendar-alt fa-fw post-meta-icon"></i><span class="post-meta-label">发表于</span><time class="post-meta-date-created" datetime="2018-08-02T16:00:00.000Z" title="发表于 2018-08-03 00:00:00">2018-08-03</time><span class="post-meta-separator">|</span><i class="fas fa-history fa-fw post-meta-icon"></i><span class="post-meta-label">更新于</span><time class="post-meta-date-updated" datetime="2024-08-26T07:47:32.413Z" title="更新于 2024-08-26 15:47:32">2024-08-26</time></span></div><div class="meta-secondline"><span class="post-meta-separator">|</span><span class="post-meta-pv-cv" id="" data-flag-title="如何防止开发者选项关闭动画后使其失效"><i class="far fa-eye fa-fw post-meta-icon"></i><span class="post-meta-label">阅读量:</span><span id="busuanzi_value_page_pv"><i class="fa-solid fa-spinner fa-spin"></i></span></span></div></div></div></header><main class="layout" id="content-inner"><div id="post"><article class="post-content" id="article-container"><p>很多用户为了手机用起来感觉上快，在开发者选项里把系统动画给关了，即把那3个缩放比例改成了0，系统默认一般是1x。个人建议调到0.5x就很合适了，没必要关闭，否则某些动效比较多的App体验会很差。<br>本文的问题就是，当开发者选项中的动画缩放比例被全部调成0后，App中部分设置了duration的属性动画就会失效，表现为直接从开头跳到了结尾，没有动画过程。</p>
})(window)</script><script>document.oncontextmenu=function(){return!1}</script><script>document.addEventListener("DOMContentLoaded",function(){const e=document.getElementById("busuanzi_value_site_uv"),t=document.getElementById("busuanzi_value_site_pv"),n=new MutationObserver(e=>{for(let t of e)if("childList"===t.type){n.disconnect(),t.target.innerHTML=parseInt(t.target.innerHTML)+1e5;break}}),i=new MutationObserver(e=>{for(let t of e)if("childList"===t.type){i.disconnect(),t.target.innerHTML=parseInt(t.target.innerHTML)+3e5;break}}),r={childList:!0};n.observe(e,r),i.observe(t,r)});</script><meta name="referrer" content="no-referrer" /><meta name="generator" content="Hexo 6.3.0"></head><body><div id="sidebar"><div id="menu-mask"></div><div id="sidebar-menus"><div class="avatar-img is-center"><img src="/img/avatar-ysy.png" onerror="onerror=null;src='/img/friend_404.gif'" alt="avatar"/></div><div class="sidebar-site-data site-data is-center"><a href="/archives/"><div class="headline">文章</div><div class="length-num">93</div></a><a href="/tags/"><div class="headline">标签</div><div class="length-num">15</div></a><a href="/categories/"><div class="headline">分类</div><div class="length-num">0</div></a></div><hr class="custom-hr"/><div class="menus_items"><div class="menus_item"><a class="site-page" href="/"><i class="fa-fw fas fa-home"></i><span> Home</span></a></div><div class="menus_item"><a class="site-page" href="/archives/"><i class="fa-fw fas fa-archive"></i><span> Archives</span></a></div><div class="menus_item"><a class="site-page" href="/tags/"><i class="fa-fw fas fa-tags"></i><span> Tags</span></a></div><div class="menus_item"><a class="site-page" href="/gallery/"><i class="fa-fw fas fa-images"></i><span> Gallery</span></a></div><div class="menus_item"><a class="site-page" href="/about/"><i class="fa-fw fas fa-heart"></i><span> About</span></a></div></div></div></div><div class="post" id="body-wrap"><header class="post-bg" id="page-header" style="background-image: url('/img/home-bg.jpg')"><nav id="nav"><span id="blog-info"><a href="/" title="Pig Cat"><span class="site-name">Pig Cat</span></a></span><div id="menus"><div id="search-button"><a class="site-page social-icon search" href="javascript:void(0);"><i class="fas fa-search fa-fw"></i><span> Search</span></a></div><div class="menus_items"><div class="menus_item"><a class="site-page" href="/"><i class="fa-fw fas fa-home"></i><span> Home</span></a></div><div class="menus_item"><a class="site-page" href="/archives/"><i class="fa-fw fas fa-archive"></i><span> Archives</span></a></div><div class="menus_item"><a class="site-page" href="/tags/"><i class="fa-fw fas fa-tags"></i><span> Tags</span></a></div><div class="menus_item"><a class="site-page" href="/gallery/"><i class="fa-fw fas fa-images"></i><span> Gallery</span></a></div><div class="menus_item"><a class="site-page" href="/about/"><i class="fa-fw fas fa-heart"></i><span> About</span></a></div></div><div id="toggle-menu"><a class="site-page" href="javascript:void(0);"><i class="fas fa-bars fa-fw"></i></a></div></div></nav><div id="post-info"><h1 class="post-title">如何防止开发者选项关闭动画后使其失效</h1><div id="post-meta"><div class="meta-firstline"><span class="post-meta-date"><i class="far fa-calendar-alt fa-fw post-meta-icon"></i><span class="post-meta-label">发表于</span><time class="post-meta-date-created" datetime="2018-08-02T16:00:00.000Z" title="发表于 2018-08-03 00:00:00">2018-08-03</time><span class="post-meta-separator">|</span><i class="fas fa-history fa-fw post-meta-icon"></i><span class="post-meta-label">更新于</span><time class="post-meta-date-updated" datetime="2025-01-21T07:06:28.432Z" title="更新于 2025-01-21 15:06:28">2025-01-21</time></span></div><div class="meta-secondline"><span class="post-meta-separator">|</span><span class="post-meta-pv-cv" id="" data-flag-title="如何防止开发者选项关闭动画后使其失效"><i class="far fa-eye fa-fw post-meta-icon"></i><span class="post-meta-label">阅读量:</span><span id="busuanzi_value_page_pv"><i class="fa-solid fa-spinner fa-spin"></i></span></span></div></div></div></header><main class="layout" id="content-inner"><div id="post"><article class="post-content" id="article-container"><p>很多用户为了手机用起来感觉上快，在开发者选项里把系统动画给关了，即把那3个缩放比例改成了0，系统默认一般是1x。个人建议调到0.5x就很合适了，没必要关闭，否则某些动效比较多的App体验会很差。<br>本文的问题就是，当开发者选项中的动画缩放比例被全部调成0后，App中部分设置了duration的属性动画就会失效，表现为直接从开头跳到了结尾，没有动画过程。</p>
<p>我们先分析下为什么会这样。<br>看ValueAnimator（&#x2F;frameworks&#x2F;base&#x2F;core&#x2F;java&#x2F;android&#x2F;animation&#x2F;ValueAnimator.java）的部分源码：</p>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="keyword">final</span> <span class="type">boolean</span> <span class="title function_">doAnimationFrame</span><span class="params">(<span class="type">long</span> frameTime)</span> &#123;</span><br><span class="line"> ......</span><br><span class="line"> </span><br><span class="line"> <span class="keyword">if</span> (mLastFrameTime &lt; <span class="number">0</span>) &#123;</span><br><span class="line"> <span class="keyword">if</span> (mSeekFraction &gt;= <span class="number">0</span>) &#123;</span><br><span class="line"> <span class="type">long</span> <span class="variable">seekTime</span> <span class="operator">=</span> (<span class="type">long</span>) (getScaledDuration() * mSeekFraction); <span class="comment">// 开发者选项改后此处为0</span></span><br><span class="line"> mStartTime = frameTime - seekTime;</span><br><span class="line"> mSeekFraction = -<span class="number">1</span>;</span><br><span class="line"> &#125;</span><br><span class="line"> mStartTimeCommitted = <span class="literal">false</span>;</span><br><span class="line"> &#125;</span><br><span class="line"> mLastFrameTime = frameTime;</span><br><span class="line"> </span><br><span class="line"> <span class="keyword">final</span> <span class="type">long</span> <span class="variable">currentTime</span> <span class="operator">=</span> Math.max(frameTime, mStartTime);</span><br><span class="line"> <span class="type">boolean</span> <span class="variable">finished</span> <span class="operator">=</span> animateBasedOnTime(currentTime);</span><br><span class="line"> </span><br><span class="line"> <span class="keyword">if</span> (finished) &#123;</span><br><span class="line"> endAnimation();</span><br><span class="line"> &#125;</span><br><span class="line"> <span class="keyword">return</span> finished;</span><br><span class="line">&#125;</span><br><span class="line"> </span><br><span class="line"><span class="type">boolean</span> <span class="title function_">animateBasedOnTime</span><span class="params">(<span class="type">long</span> currentTime)</span> &#123;</span><br><span class="line"> <span class="type">boolean</span> <span class="variable">done</span> <span class="operator">=</span> <span class="literal">false</span>;</span><br><span class="line"> <span class="keyword">if</span> (mRunning) &#123;</span><br><span class="line"> <span class="keyword">final</span> <span class="type">long</span> <span class="variable">scaledDuration</span> <span class="operator">=</span> getScaledDuration(); <span class="comment">// 开发者选项改后此处为0</span></span><br><span class="line"> ......</span><br><span class="line"> <span class="keyword">if</span> (scaledDuration == <span class="number">0</span>) &#123;</span><br><span class="line"> <span class="comment">// 0 duration animator, ignore the repeat count and skip to the end</span></span><br><span class="line"> done = <span class="literal">true</span>;</span><br><span class="line"> &#125; ......</span><br><span class="line"> &#125;</span><br><span class="line"> <span class="keyword">return</span> done;</span><br><span class="line">&#125;</span><br><span class="line"> </span><br><span class="line"> </span><br><span class="line"><span class="keyword">private</span> <span class="type">long</span> <span class="title function_">getScaledDuration</span><span class="params">()</span> &#123;</span><br><span class="line"> <span class="keyword">return</span> (<span class="type">long</span>)(mDuration * sDurationScale); <span class="comment">// 开发者选项修改直接影响sDuration的值</span></span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

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