按钮和手势无效问题及解决方案

按钮和手势无效问题
一般有四种情况：
1.父类或本身userInteractionEnabled设置了NO。置正确userInteractionEnabled就可以。
2.被上层的组件的事件拦截。如上面有一个文本输出框，虽然你把这个文本输入框设置了userInteractionEnabled为NO。替换不会交互的组件如UILabel。
3.被其它手势事件拦截。如对父视图设置了手势，那么它上面的表格行事件就会无效。参考：《点击UICollectionViewCell和UICollectionView空白处事件响应》。
4.不在感应区内。
本问主要介绍下空间不在感应区的情况。
有人说可以通过view来响应事件来解决，经过实践，确实能不解决该类问题，但是它只能解决父视图和该组件是直接父子关系的情况。我遇到的是正常的父视图和该组件隔了一个有相同问题的view，导致该方法无效。

//返回一个view来响应事件
- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event{
    UIView *view = [super hitTest:point withEvent:event];
    if (view == nil){
        //转换坐标
        CGPoint tempPoint = [self.calendarFootView convertPoint:point fromView:self];
       //判断点击的点是否在按钮区域内
        if (CGRectContainsPoint(self.calendarFootView.bounds, tempPoint)){
            //返回按钮
            return self.calendarFootView;
        }
    }
    return view;
}

下面看我的问题分析和解决方案。不在感应区主要分三种情况：
1.它的父视图的frame设置的过小，该组件在它的视图外面。这个是代码错误，把父视图的frame设置正确就可以。通过View UI Hierarchy直接可以看到父视图和它的frame大小。这个是常见的错误。
2.自己修改了自己的frame，没有在父视图里修改frame。若本组件不想有响应，你自己修改自己的frame没有问题；若需要想有响应事件，需要通过block传递到父视图，让父视图修改frame。

    self.calendarView = [[BGCalendarView alloc] initWithIsEnabledSelect:NO icon:[UIImage imageNamed:@"返回 拷贝(1)"] selectedIcon:[UIImage imageNamed:@"返回 拷贝"] selectColor:BGColorHex(FF7648) isHiddenLine:NO lineColor:BGColorHex(F8F8F8) isUnfold:NO frame:CGRectMake(0, kNavBarAndStatusBarHeight, sCommonUnitFullWidth(), (10+15+10+12+5+(sCalendarCellInterval+12+sCalendarCellInterval)+10))];
    @weakify(self);
    self.calendarView.selectBlock = ^(BOOL isSelectContent) {
        @strongify(self);
        self.model.isUnfold = isSelectContent;
        if(isSelectContent)
        {
            self.calendarView.frame = CGRectMake(0, kNavBarAndStatusBarHeight, sCommonUnitFullWidth(), (10+15+10+12+5+(sCalendarCellInterval+12+sCalendarCellInterval)*5+10));
            self.tabview.frame = CGRectMake(0, kNavBarAndStatusBarHeight+(10+15+10+12+5+(sCalendarCellInterval+12+sCalendarCellInterval)*5+10)-BG_1PX, kUIScreenWidth, FULL_HEIGHT -(kNavBarAndStatusBarHeight+(10+15+10+12+5+(sCalendarCellInterval+12+sCalendarCellInterval)*5+10)+kBottomSafeHeight)+BG_1PX);
            [self.tabview reloadData];
        }
        else
        {
            self.calendarView.frame = CGRectMake(0, kNavBarAndStatusBarHeight, sCommonUnitFullWidth(), (10+15+10+12+5+(sCalendarCellInterval+12+sCalendarCellInterval)+10));
            self.tabview.frame = CGRectMake(0, kNavBarAndStatusBarHeight+(10+15+10+12+5+(sCalendarCellInterval+12+sCalendarCellInterval)+10)-BG_1PX, kUIScreenWidth, FULL_HEIGHT -(kNavBarAndStatusBarHeight+(10+15+10+12+5+(sCalendarCellInterval+12+sCalendarCellInterval)+10)+kBottomSafeHeight)+BG_1PX);
            [self.tabview reloadData];
        }
    };

3.在父视图里修改了组件的位置，但是没有修改组件的frame。 若本组件不想有响应，你父视图里修改了组件的位置没有问题；若需要想有响应事件，需要通过block传递到父视图，让父视图修改frame。

-(void)setupCommonCollectionViewCellView
{
//    self.contentView.backgroundColor = [UIColor whiteColor];
//    [self.contentView addSubview:self.bgBtn];
//    [self.contentView addSubview:self.decribeImageView];
//    [self.decribeImageView addSubview:self.describeTitleLabel];
//    [self.decribeImageView addSubview:self.subDescribeTitleLabel];
//    [self.decribeImageView addSubview:self.iconImageView];
//    [self unitsCommonCollectionViewCellSdLayout];
    self.commonSelectView =  [[BGCommonSelectView alloc] initWithFrame:CGRectMake(0, 0, sCommonUnitFullWidth(), 43)];
    @weakify(self);
    self.commonSelectView.hitBlock = ^(NSInteger row) {
        @strongify(self);
        if(1==row)
        {
            [self showShopGoodsDetailParamsSelectView];
        }
        else
        {
            [self showShopGoodsDetailSelectView];
        }
    };
    [self.contentView addSubview:self.commonSelectView];
}

-(void)showShopGoodsDetailParamsSelectView{
    if(isCommonUnitEmptyArray(self.model.goods_param))
    {
        return;
    }
    self.shopGoodsDetailParamsSelectView = [[CBPShopGoodsDetailParamsSelectView alloc]initWithFrame:CGRectMake(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT) bottomViewHeight:(kBottomSafeHeight +self.model.goods_param.count*42+55+45+BG_1PX*2) model:self.model];
    [[[PPSingleObject sharedInstance] getLevelNormalWindwow] addSubview:self.shopGoodsDetailParamsSelectView];
    [UIView animateWithDuration:0.3 animations:^{
        self.shopGoodsDetailParamsSelectView.bottomView.centerY = FULL_HEIGHT - (kBottomSafeHeight+55+45 +self.model.goods_param.count*42)/2;
    } completion:^(BOOL finished) {
        
    }];
}

-(void)showShopGoodsDetailSelectView{
    if(isCommonUnitEmptyArray(self.model.spec_list))
    {
        return;
    }
    self.shopGoodsDetailSelectView = [[CBPShopGoodsDetailSelectView alloc]initWithFrame:CGRectMake(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT) bottomViewHeight:(60+75+kBottomSafeHeight +self.model.spec_list.count*(15+12+10+32)+30+30+45+15+BG_1PX+self.model.spec_list.count*BG_1PX) model:self.model];
    @weakify(self);
    self.shopGoodsDetailSelectView.keyboardChangeBlock = ^(CGFloat keyboardHeight) {
        @strongify(self);
        self.shopGoodsDetailSelectView.bottomView.frame = CGRectMake(0, FULL_HEIGHT - (keyboardHeight+60+75+kBottomSafeHeight +self.model.spec_list.count*(15+12+10+32)+30+30+45+15+BG_1PX+self.model.spec_list.count*BG_1PX), SCREEN_WIDTH, (60+75+kBottomSafeHeight +self.model.spec_list.count*(15+12+10+32)+30+30+45+15+BG_1PX+self.model.spec_list.count*BG_1PX));
//        self.shopGoodsDetailSelectView.bottomView.centerY = FULL_HEIGHT - (60+75+kBottomSafeHeight +self.model.spec_list.count*(15+12+10+32)+30+30+45+15+BG_1PX+self.model.spec_list.count*BG_1PX)/2-keyboardHeight;
    };
    [[[PPSingleObject sharedInstance] getLevelNormalWindwow] addSubview:self.shopGoodsDetailSelectView];
    [UIView animateWithDuration:0.3 animations:^{
//        self.shopGoodsDetailSelectView.bottomView.centerY = FULL_HEIGHT - (60+75+kBottomSafeHeight +self.model.spec_list.count*(15+12+10+32)+30+30+45+15+BG_1PX+self.model.spec_list.count*BG_1PX)/2;
        self.shopGoodsDetailSelectView.bottomView.frame = CGRectMake(0, FULL_HEIGHT - (60+75+kBottomSafeHeight +self.model.spec_list.count*(15+12+10+32)+30+30+45+15+BG_1PX+self.model.spec_list.count*BG_1PX), SCREEN_WIDTH, (60+75+kBottomSafeHeight +self.model.spec_list.count*(15+12+10+32)+30+30+45+15+BG_1PX+self.model.spec_list.count*BG_1PX));
    } completion:^(BOOL finished) {
        
    }];
}

本文地址：https://blog.csdn.net/jia12216/article/details/111869578