ios - 添加到 UIButton 的 UIButton 不响应选择器

Question

我已向披露按钮添加了一个 ui 按钮

并实现了选择器方法

但是操作选择器不响应按钮，原因和操作

//To add a discloser button to show route map
UIButton *detailBtn=[UIButton buttonWithType:UIButtonTypeDetailDisclosure];
pinView.leftCalloutAccessoryView=detailBtn;
[detailBtn addTarget:self action:@selector(showRoute:) forControlEvents:UIControlEventTouchUpInside];
DisplayMap *ann=(DisplayMap *)annotation;
detailBtn.tag = ann.detailButtonTag;


UIButton *btnOnPopup=[[UIButton alloc] initWithFrame:CGRectMake(- 207, -6, 300, 43)];
btnOnPopup.backgroundColor = [UIColor whiteColor];
[btnOnPopup addTarget:self action:@selector(showRoute2:) forControlEvents:UIControlEventTouchUpInside];
btnOnPopup.tag = ann.detailButtonTag;
btnOnPopup.userInteractionEnabled = YES;
[detailBtn insertSubview:btnOnPopup aboveSubview:detailBtn];

选择器

[btnOnPopup addTarget:self action:@selector(showRoute2:) forControlEvents:UIControlEventTouchUpInside];

(第二个按钮 btnOnPopup)不起作用。

Answer 1

您的btnOnPopup超出了detailBtn的范围，因此触摸甚至无法到达它。无论如何，向按钮添加按钮并不是一个很好的做法。将其添加到按钮的 super View 可能会好一点(并且将使您的触摸正常工作，但您可能需要调整框架)

[detailBtn.superview insertSubview:btnOnPopup aboveSubview:detailBtn];