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android get view height oncreate

android get view height oncreate

很经常当我们动态创建某些View时，需要通过获取他们的width和height来确定别的view的布局，但是在onCreate()获取view的width和height会得到0.view.getWidth()和view.getHeight()为0的根本原因是控件还没有完成绘制，你必须等待系统将绘制完View

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