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Mhandler.sendmessage AtFront OfQueue on Muck Rack

Mhandler.sendmessage AtFront OfQueue

As seen in: 51cto.com
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ViewRootImpl如何负责管理绘制视图树和刷新界面-51CTO.COM

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By boolean invalidateCache, Mhandler.sendmessage AtFront OfQueue, mTraversal Runnable
| 51cto.com
2024-05-22 08:35:41 mHandler是当前主线程的handler，当接收到onVsync信号的时候，将自己封装到Message中，等到Looper处理，最后Looper处理消息的时候就会调用run方法最终从mCallbackQueues取回之前添加的任务再执行run方法，也就是TraservalRunnable的run方法。 ViewRootImpl位于视图层次结构的顶部，负责View和WindowManager之间的通信。 视图绘制：负责调用View树的绘制流程，包括测量（measure）、布局（layout）和绘制（draw）等操作。监听View树的改变，并根据需要触发相应的绘制操作，确保界面的及时更新。 事件分发：负责将输入的各种事件（如触摸事件、按键事件等）分发给正确的View处理。根据触摸事件的位置信息，逐层遍历View树，找到最合适的View来处理事件。将处理结果返回给系统，以便进行后续的处理，如滚动、点击等。...
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Android 怎么就不卡了呢之Choreographer

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By Mhandler.sendmessage AtFront OfQueue, int mFrame, Mframe Info.markinput HandlingStart, mFrame Info.markAnimations Start
| 51cto.com
水花哒哒 2023-08-15 11:40:58 博主文章分类：Anroid进阶 文章标签 System Android UI 文章分类 Android 移动开发 ©著作权归作者所有：来自51CTO博客作者水花哒哒的原创作品，请联系作者获取转载授权，否则将追究法律责任 赞 收藏 评论 分享 举报
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