makeObjectsPerformSelector 用法

makeObjectsPerformSelector

这是数组用的方法，类似于for循环

makeObjectsPerformSelector:@selector(method:)

意为数组中的每个元素都执行method方法 obj是对象不能是基本数据类型

makeObjectsPerformSelector:@selector(method:) withObject:obj

例如：

1、按钮全部设置为选中状态

[self.selectedBtnArr makeObjectsPerformSelector:@selector(setSelected:) withObject:@(YES)];

2、将self.view的上的子视图逐一从父视图上移除

[self.View.subviews makeObjectsPerformSelector:@selector(removeFromSuperview)];