解决办法: 在自定义的View 的构造方法中添加一句话: this.setWillNotDraw(false);解释:那么加这条语句的作用是什么?先看API: If this view doesn't do any drawing on its own, set this flag to allow further optimizations. By default, this flag is not set on View, but could be set on so
最近阅读一篇文献<Regional and individual variations in the function of the human eccrine sweat gland>,想看看里面几个变量之间的关系是怎么样,因此把文献里面的数据提取出来, 在R里面输入数据: sample<-seq(1,14,by=1) forehead<-c(249,189,128,111,184,233,313,120,151,196,135,157,145,218) forearm<-