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Android 重写TextView的onDraw函数遇坑记

平台RK3288 + Android 7.1 + Android Studio Chipmunk | 2021.2.1问题重写也TextView, 尝试在onDraw中绘制一些图形时不能正确显示出来.比如, 给TextView 增加下个蓝色边框, 再绘制一条从左上到右下的绿色直线然而, 实际的效果却...

Android绘图操作onDraw

做java的都知道，绘图肯定首先需要一个Canvas，然后在用Graphics在上面绘制自己想要图案。不错，Android上面也类似，你可以从一个Bitmap得到它的Canvas，进行绘制，也可以自定义一个View，用它的 Canvas。不同的时，Android里没有Graphics，而用 Pain...

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android：自定义控件时，需要的那个ondraw()方法具体是如何绘制的？

android：自定义控件时，需要的那个ondraw()方法具体是怎么绘制的？因为不了解现在自定义控件的知识

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更新时间 2023-04-20 10:33:02

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