写的一个scrollView里循环滚动新闻的控件，在updateForTopTalkArray方法中添加
if ([_containerView subviews].count) {
for (UIView *view in [_containerView subviews]) {
if ([view isKindOfClass:[DyTopTalkButton class]]) {
[view removeFromSuperview];
}
}
}变回报错，下面是错误信息：
2015-11-28 17:42:51.793 WanFanTian[9068:2279758] *** Assertion failure in -[MASViewConstraint install], /Users/deyi/Documents/Deyi/WanFanTian/Pods/Masonry/Masonry/MASViewConstraint.m:345
2015-11-28 17:42:51.966 WanFanTian[9068:2279758] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'couldn't find a common superview for <DyTopTalkButton: 0x7fe2f84b3330; baseClass = UIButton; frame = (0 0; 0 0); opaque = NO; layer = <CALayer: 0x7fe2fa85b2e0>> and <DyTopTalkButton: 0x7fe2fa988a50; baseClass = UIButton; frame = (0 144; 304 36); opaque = NO; layer = <CALayer: 0x7fe2fa987ee0>>'其中MASViewConstraint.m:345的内容就是：
@"couldn't find a common superview for %@ and %@",
同时按钮添加的监听方法无效，点击之后没有效果
望大牛能够帮忙解决!!!
详细代码如下：
#import "DySelectionTopTalkCell.h"
#import "WebViewController.h"
static const CGFloat cellHeight = 36.f;
@implementation DySelectionTopTalkCell{
DyTopTalkButton *_lastBtn;
NSTimer *timer;
NSInteger currentPage;
}
- (void)initView{
[super initView];
self.selectionStyle = UITableViewCellSelectionStyleNone;
self.backgroundColor = [UIColor whiteColor];
_topLineView = [[UIView alloc]init];
_bottomLineView = [[UIView alloc]init];
_seperatorLineView = [[UIView alloc]init];
_topLineView.backgroundColor = [UIColor appSplitLineColor];
_bottomLineView.backgroundColor = [UIColor appSplitLineColor];
_seperatorLineView.backgroundColor = [UIColor appSplitLineColor];
_label = [[UILabel alloc]init];
[_label setTextColor:[UIColor appAirConditionOrangeColor]];
[_label setFont:[UIFont systemFontOfSize:13]];
NSString *text = @"今日头条";
[_label setText:text];
CGSize labelSize = [text sizeWithFont:[UIFont systemFontOfSize:13] constrainedToSize:CGSizeMake(30, 36)];
NSLog(@"labe-大小%@",NSStringFromCGSize(labelSize));
[_label setFrame:CGRectMake(0, 0, labelSize.width, labelSize.height)];
_topTalkScrollView = [[UIScrollView alloc]init];
_topTalkScrollView.bounces = NO;
_topTalkScrollView.pagingEnabled = YES;
_topTalkScrollView.scrollEnabled = NO;
_containerView = [[UIView alloc]init];
[self.contentView addSubview:_topTalkScrollView];
[_topTalkScrollView addSubview:_containerView];
[self.contentView addSubview:_topLineView];
[self.contentView addSubview:_bottomLineView];
[self.contentView addSubview:_seperatorLineView];
[self.contentView addSubview:_label];
timer = [NSTimer timerWithTimeInterval:2.f target:self selector:@selector(updateTimer) userInfo:nil repeats:YES];
[[NSRunLoop currentRunLoop]addTimer:timer forMode:NSRunLoopCommonModes];
[self layoutConstraints];
}
- (void)updateTimer{
if (!_top_talkArray.count) {
return;
}
if (currentPage == _top_talkArray.count-1) {
currentPage = 0;
[_topTalkScrollView setContentOffset:CGPointMake(0, 0) animated:YES];
}else{
currentPage ++;
[UIView animateWithDuration:0.6f animations:^{
[_topTalkScrollView setContentOffset:CGPointMake(0, currentPage*cellHeight) animated:YES];
}];
}
}
- (void)updateForTopTalkArray{
if ([_containerView subviews].count) {
for (UIView *view in [_containerView subviews]) {
if ([view isKindOfClass:[DyTopTalkButton class]]) {
[view removeFromSuperview];
}
}
}
NSString *url = nil;
if (_top_talkArray.count) {
for (NSDictionary *dataDic in _top_talkArray) {
DyTopTalkButton *scrollButton = [[DyTopTalkButton alloc]init];
scrollButton.title = dataDic[@"title"];
scrollButton.type = [dataDic[@"type"]integerValue];
// scrollButton.backgroundColor =[UIColor colorWithHue:( arc4random() % 256 / 256.0 )
// saturation:( arc4random() % 128 / 256.0 ) + 0.5
// brightness:( arc4random() % 128 / 256.0 ) + 0.5
// alpha:1];
url = dataDic[@"url"];
if(url) {
scrollButton.url = url;
[scrollButton setTitleColor:[UIColor appAirConditionOrangeColor] forState:UIControlStateNormal];
// [scrollButton addTarget:self action:@selector(topTalkbtnClick:) forControlEvents:UIControlEventTouchUpInside];
[scrollButton addTarget:self action:@selector(topTalkbtnClick:) forControlEvents:UIControlEventTouchDragInside];
NSLog(@"%@--网址",url);
}
[_containerView addSubview:scrollButton];
[scrollButton mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.right.equalTo(_containerView);
make.height.mas_equalTo(cellHeight);
if (_lastBtn) {
make.top.equalTo(_lastBtn.mas_bottom);
}else{
make.top.equalTo(_containerView.mas_top);
}
}];
_lastBtn = scrollButton;
}
}
else{
DyTopTalkButton *scrollButton = [[DyTopTalkButton alloc]initWithFrame:_containerView.bounds];
scrollButton.title = @"小编睡懒觉了，尝试刷新一下叫醒她！";
[_containerView addSubview:scrollButton];
[scrollButton mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.right.top.equalTo(_containerView);
make.height.mas_equalTo(cellHeight);
}];
}
//
// [_containerView mas_makeConstraints:^(MASConstraintMaker *make) {
// make.bottom.equalTo(_lastBtn.mas_bottom);
// }];
}
- (void)layoutConstraints{
WeakSelf(weakSelf);
[_topTalkScrollView mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.equalTo(_seperatorLineView.mas_right).offset(4.f);
make.top.bottom.right.equalTo(weakSelf.contentView);
// make.height.mas_equalTo(cellHeight);
// NSLog(@"-----scroll布局属性---%@",NSStringFromCGRect(_topTalkScrollView.frame));
}];
[_containerView mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.right.top.equalTo(_topTalkScrollView);
make.width.equalTo(_topTalkScrollView);
}];
[_topLineView mas_makeConstraints:^(MASConstraintMaker *make) {
make.top.equalTo(weakSelf.contentView);
make.left.equalTo(weakSelf.contentView);
make.width.equalTo(weakSelf.contentView);
make.height.mas_equalTo(1.f);
}];
[_bottomLineView mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.equalTo(weakSelf.contentView);
make.bottom.width.equalTo(weakSelf.contentView);
make.width.equalTo(weakSelf.contentView);
make.height.mas_equalTo(1.f);
}];
[_label mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.equalTo(weakSelf.contentView).offset(7.f);
make.centerY.equalTo(weakSelf.contentView);
make.width.mas_equalTo(55);
}];
[_seperatorLineView mas_makeConstraints:^(MASConstraintMaker *make) {
make.width.mas_equalTo(1.f);
make.top.equalTo(weakSelf.contentView).offset(7.f);
make.bottom.equalTo(weakSelf.contentView).offset(-7.f);
make.left.equalTo(_label.mas_right).offset(4.f);
}];
}
- (void)topTalkbtnClick:(DyTopTalkButton *)btn{
NSLog(@"clicked 点击");
WebViewController *web = [[WebViewController alloc]initWithWeburl:btn.url];
web.hidesBottomBarWhenPushed = YES;
[self.viewController.navigationController pushViewController:web animated:YES];
}'couldn't find a common superview for 出现这个错误的原因是，你所设置约束的这个控件和所依赖的控件没有共同的父视图。因为没有共同的视图作为参照，frame 就不能转换到一个相同的坐标系。这个问题经常会出现在，我们创建了要设置约束的视图，而没有将它添加到父控件中，又或者，要设置约束的这个视图和所依赖的视图没有共同的父视图，也就是你遇到的这种情况。
你在清空_containerView的时候忘记对_lastBtn进行置空了吧。导致_lastBtn非空，但这个button实际上不在view hierarchy上