[view superview] !...rightItemCustomView]; self.navigationItem.rightBarButtonItem = rightItem; } 但是这个方法会有约束冲突问题,所以我们把产生冲突的约束删除...[view superview] !...LFBarButtonItemViewTypeLeft) { CGFloat margin = kAppAdaptHeight(15); //删除原来的...LFBarButtonItemViewTypeRight) { CGFloat margin = -kAppAdaptHeight(15); //删除原来的
AnimationTimeInterval animations:^{ __strong typeof(weakSelf) strongSelf = weakSelf; strongSelf.superView.backgroundColor...AnimationTimeInterval animations:^{ __strong typeof(weakSelf) strongSelf = weakSelf; strongSelf.superView.alpha...completion:^(BOOL finished) { __strong typeof(weakSelf) strongSelf = weakSelf; [strongSelf.superView...removeFromSuperview]; strongSelf.superView = nil; }]; } //输入密码或删除时 - (void)updateLabelBoxWithText...else { label.text = @""; } } } //删除时
0x7fdf7048b200> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key 解决办法:删除多余的连线...NSInvalidArgumentException', reason: '-[ViewController delete2]: unrecognized selector sent to instance >解决办法:添加对应的方法或者删除多余的连线...UIView介绍 控件:界面中的所有元素 控件的共有属性:尺寸、位置、背景色等等 - 控件的共有属性封装在其父类——UIView中 UIView常见属性 superView:查看父控件 NSLog(@..."%@",self.greenView.superview); subView:查看子控件 NSLog(@"%@",self.greenView.subviews); 查看View中控件的数量 NSLog...self.view.subviews.count); 控制器的父控件:UIWindow -(void)viewDidAppear:(BOOL)animated{ NSLog(@"%@",self.view.superview
我不是已经删除了吗?...实际上,你可能和我一样,没有理解这个removeFromSuperview到底是什么意思,先来说说这个属性的意思: 官方文档这样描述它 Unlinks the receiver from its superview...If the view’s superview is not nil, the superview releases the view.
uploadView mas_makeConstraints:^(MASConstraintMaker *make) { make.center.equalTo(uploadView.superview...titleLabel mas_makeConstraints:^(MASConstraintMaker *make) { make.centerX.equalTo(titleLabel.superview...successView mas_makeConstraints:^(MASConstraintMaker *make) { make.size.equalTo(successView.superview...历史 基本功能如下 加载iCloud数据 删除记录 分享 这里使用了MVVM+RAC ViewModel 创建两个command, 获取数据,及删除数据 @interface MMHistoryViewModel...UIButton *deleteBtn = [UIButton buttonWithType:UIButtonTypeSystem]; [deleteBtn setTitle:@"删除记录
(SUPERVIEW,WIDTH,COLUMN) SUPERVIEW.subviews.count % COLUMN * WIDTH /** 设置格子的Y坐标 * SUPERVIEW 指九宫格每个小格子的父视图...(SUPERVIEW,HEIGHT,COLUMN) SUPERVIEW.subviews.count / COLUMN * HEIGHT /**************************有间距*...,WIDTH,COLUMN,MARGIN) SUPERVIEW.subviews.count % COLUMN * WIDTH + SUPERVIEW.subviews.count % COLUMN...,HEIGHT,COLUMN,MARGIN) SUPERVIEW.subviews.count / COLUMN * HEIGHT + SUPERVIEW.subviews.count / COLUMN...,WIDTH,COLUMN,MARGIN) SUPERVIEW.subviews.count % COLUMN * WIDTH + (SUPERVIEW.subviews.count % COLUMN
要在superview的subviews中间插入subview,请调用superview的任何insertSubview:...方法。...使用这些方法比删除subview并重新插入它们要快。 要从其superview移除subview,请调用subview的removeFromSuperview方法(而不是superview)。...如果您希望将subview剪裁到superview的边界,则必须明确地将superview的clipsToBounds属性设置为YES。...因此,隐藏view通常是从view层次结构中删除view的一种方便的替代方法,特别是如果您计划在不久的将来再次显示view时。...添加或删除subview或核心动画layer。 通过调用setNeedsDisplay或setNeedsDisplayInRect:方法强制subview重绘。
[view isKindOfClass:UINavigationBar.class] && view.superview) { view = [view superview];...if ([view isKindOfClass:UIStackView.class] && view.superview) { if (self.position == SXBarViewPositionLeft...) { for (NSLayoutConstraint *constraint in view.superview.constraints) {...removeConstraint:constraint]; } } [view.superview...removeConstraint:constraint]; } } [view.superview
可复制代码: UIView* superView = [[UIViewalloc]init]; [self.viewaddSubview:superView]; UIView* subView =...[[UIViewalloc]init]; [superViewaddSubview:subView]; superView.backgroundColor = [UIColor greenColor...offset(100); }]; [subViewmas_makeConstraints:^(MASConstraintMaker *make) { make.left.equalTo(superView.mas_left...).offset(10); make.top.equalTo(superView.mas_top).offset(10); make.right.equalTo(superView.mas_right...).offset(-10); make.bottom.equalTo(superView.mas_bottom).offset(-10); make.width.height.equalTo
Autoresizing的各种组合预览 ** UIViewAutoresizingNone** view的frame不会随superview的改变而改变(这样的约束条件有冲突,会默认左间距和上间距固定...UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight view与其superView...UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight view与其superView...UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight view与其superView...的宽高比例维持不变,上下左右间距也随其superView的缩放而缩放 UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight
前言 iOS的组件都是封装好的,又没法看源代码,所以我们不容易知道组件的结构,所以我们可以遍历所有的视图,打印出来,来查看结构 /** 打印层级结构 - parameter superView: view...- parameter level: 0 */ static func printViewHierarchy(superView:UIView,level:Int?...= 0) -> Void { let className = "\(superView.dynamicType)"; let frame = "\(superView.frame)";...{ print("\t", terminator:"") } if let backgroundColor = superView.backgroundColor...backgroundColor)]") }else{ print("\(className) \(frame) [背景色:透明]") } for sonView in superView.subviews
changeList 是不能在提交窗口那边删除的,如果想删除怎么办呢? 删除步骤: 打开version control 或者快捷键alt+ 9 ?...2.)选择Local Changes 下面会列出来changeList,在想要删除的changeList上面,直接右键--Delete ChangeList
看到标题,有的童鞋心中暗想“数据删除有什么可提的呢?不就是执行个delete语句吗?有什么难的呀?”其实呢数据删除没有你想的这么简单,一般情况下公司会明确的要求数据只能逻辑删除,不能物理删除。...那什么优势逻辑删除,什么又是物理删除呢?...物理删除的代价一 由于物理删除是真的被删除的,当我们发现数据是被误删除的,那么恢复起来是非常困难的,恢复数据还要停掉数据库,对业务系统的影响是非常大的,所以误删除的后果是非常严重。...如果误删除了数据,有什么办法恢复数据吗?当然有了,如果误删除了数据,需要停掉数据库才行,对业务系统的影响是非常大的。...当然了,在一些必须要物理删除的情形下,还是有折中的加速分页查询的方法 什么样的数据不适合物理删除 核心业务表的数据不建议做物理删除,因为物理删除后,真的就只能停机恢复数据,这个代价真的非常大,反之我们可以对需要删除的记录做状态上的变更
(superview.mas_bottom).offset(-padding.bottom); make.right.equalTo(superview.mas_right).offset(-padding.right...); }]; 甚至可以更短: [view1 mas_makeConstraints:^(MASConstraintMaker *make) { make.edges.equalTo(superview...+ 5, left = superview.left + 10, // bottom = superview.bottom - 15, right = superview.right - 20...make.size.greaterThanOrEqualTo(titleLabel) //使 width = superview.width + 100, height = superview.height...button1 make.center.equalTo(button1) //使 centerX = superview.centerX - 5, centerY = superview.centerY
It occupies the entire screen and forms the background, and is the ultimate superview of, all your other...When addSubview: is called, the view is placed last among its superview’s subviews; thus it is drawn...This affects subviews: if a superview has an alpha of 0.5, none of its subviews can have an apparent...Frame A view’s frame property, a CGRect, is the position of its rectangle within its superview....* M_PI/180.0); v2.transform = CGAffineTransformTranslate(v2.transform, 100, 0); 效果: 例5: 旋转平移后再反转(删除旋转
先说需求:在tableView中每一行有一个删除按钮,点击删除当前行。...cell.deleteButton, deleteButtonKey, indexPath, OBJC_ASSOCIATION_COPY_NONATOMIC); return cell; } //删除行...void)deleteRow:(UIButton *)button { //方法一 /* SGMyNewsViewTableViewCell *cell = (id)button.superview...[cell isKindOfClass:[SGMyNewsViewTableViewCell class]]) { cell = (id)cell.superview; }...[self.tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:YES]; //方法二需要刷新 因为这里做删除处理
/** 设置格子的X坐标 * SUPERVIEW 指九宫格每个小格子的父视图 * WIDTH 指九宫格每个小格子的宽度 int width = (VVS_SCREEN_WIDTH - (colunm...,WIDTH,COLUMN,MARGIN) SUPERVIEW.subviews.count % COLUMN * WIDTH + (SUPERVIEW.subviews.count % COLUMN...+ 1) * MARGIN /** 设置格子的Y坐标 * SUPERVIEW 指九宫格每个小格子的父视图 * HEIGHT 指九宫格每个小格子的高度 * COLUMN 指九宫格的纵向列数...,HEIGHT,COLUMN,MARGIN) SUPERVIEW.subviews.count / COLUMN * HEIGHT + (SUPERVIEW.subviews.count / COLUMN...另外,使用这个宏时,一旦格子被创建出来就必须加到superView中,不能等到所有的格子都创建好后再一起加到父视图。 上面第一个宏是可以计算每个格子的X坐标。第二个宏可以计算每个格子的Y坐标。
multiplier:(CGFloat)multiplier constant:(CGFloat)constant; Button.centerX = Superview.centerX...NSLayoutAttributeCenterX relatedBy:NsLayoutRelationEqual toItem:superview...NSLayoutAttributeCenterX multiplier:1.0 constant:0.0]; Button.bottom = Superview.bottom...NSLayoutAttributeBottom relatedBy:NsLayoutRelationEqual toItem:superview...Connection to Superview |-50-[purpleBox]-50-| ? 4.
* 1.0 + 10 UIView *superview = self.view; UIView *view1 = [[UIView alloc] init]; view1....translatesAutoresizingMaskIntoConstraints = NO; view1.backgroundColor = [UIColor greenColor]; [superview...addSubview:view1]; UIEdgeInsets padding = UIEdgeInsetsMake(10, 10, 10, 10); [superview...对象回调给用户,让用户对constraintMaker对象的属性进行初始化,其中block(constraintMaker)就相当于我们直接在该方法内部调用make.left.mas_equalTo(superview...; return [constraintMaker install]; } 紧接着看下block回调回来的操作是如何进行的,也就是下面的这些代码: make.left.mas_equalTo(superview
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