ios 类方法block怎么回调函数?

Question

ios 类方法block怎么回调函数

Answer 1

我在viewDidLoad中断点打印showDataLabel是这样的
Printing description of self->_showDataLabel:
<UILabel: 0x7f86bb5b8cc0; frame = (134 98; 170 21); text = '我是第一个页面的数据'; opaque = NO; autoresize = RM+BM; userInteractionEnabled = NO; layer = <_UILabelLayer: 0x7f86bb545b60>>
是有值的 .
在CCViewController中我把myblock声明成属性
回调写在返回事件中
- (IBAction)backPageAction:(id)sender {
if (self.myblock) {
self.myblock(self.showDataLabel.text);
}
[self dismissViewControllerAnimated:YES completion:^{
}];
}