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Choreographer全解析
2022-04-23 13:53:00 【InfoQ】
- ", action=" + action + ", token=" + token
- ", delayMillis=" + delayMillis);
- ViewRootImpl初始化的时候,会实例化Choreographer对象,也就是获取当前线程(一般就是主线程)对应的Choreographer对象。
- Choreographer初始化的时候,会新建一个当前线程对应的Handler对象,初始化FrameDisplayEventReceiver,计算一帧的时间等一系列初始化工作。
- 当UI改变的时候,会调用到ViewRootImpl的scheduleTraversals方法,这个方法中加入了同步屏障消息,并且调用了Choreographer的postCallback方法去申请VSYNC信号。
- "receiver has already been disposed.");
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