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Android/性能优化.md

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- **include**:避免布局重用,更加利于维护
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- **merge**:减少一层嵌套的布局,减少界面测量、布局、绘制的耗时,不能与**ViewStub**同时使用
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- **ViewStub**:懒加载,比起Visibilty.GONE效率更高,因为真正的内容布局并未装载到界面和内存中
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- 在多次操作View的时候可以改用`addViewInLayout` or `removeViewInLayout`,再调用`requestLayout``invalidate`,减少识图重绘次数
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### 生命周期的利用
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