在oncreate中View.getWidth和View.getHeight无法获得一个view的高度和宽度，这是因为View组件布局要在onResume回调后完成。 所以现在需要使用getViewTreeObserver().addOnGlobalLayoutListener()来获得宽度或者高度。这是获得一个view的宽度和高度的方法之一。 OnGlobalLayoutListe
关于Activity中获取View宽高的那些事 现在有一个业务需求，需要在Activity已启动的时候做一个任务，该任务需要获取某个View的宽/高。直接的想法是从Activity的onCreate或者onResume里面去获取这个View的宽/高。但是实际上在onCreate、onStart、onResume中均无法获取正确的
前言：代码很简单，网上资料很多，此篇只是做记录用。 ViewTreeObserver ViewTreeObserver vto = mRootView.getViewTreeObserver(); vto.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() { @Override public void
/** * A view tree observer is used to register listeners that can be notified of global * changes in the view tree. Such global events include, but are not limited to, * layout of the whole tree, beginning of the drawing pass, touch mode change.... *
原文地址: https://blog.csdn.net/geekzhe/article/details/47003811 Aview tree observer is used to register listeners that can be notified of globalchanges in the view tree. Such global events include, but are not limited to,layout of the whole tree, beginning o
