UIScrollView 表示滚动但不在视图中滚动
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【中文标题】UIScrollView 表示滚动但不在视图中滚动【英文标题】：UIScrollView indicates scrolling but doesnt scroll in view 【发布时间】：2016-01-15 10:50:52 【问题描述】：我有一个滚动视图，其内容视图大于使用约束的实际滚动视图。在这个 contentview uiview 我设置了我的所有内容，它表明它是可滚动的。向下滚动时滚动指示器会移动，但实际上并不滚动。
// MARK: - Methods
// MARK: - Private
private func setupViews()
// Scroll View
scrollView = UIScrollView()
addSubview(scrollView)
// Scroll Content View
scrollContentView = UIView()
scrollView.addSubview(scrollContentView)
// Image View
settingsImageView = UIImageView()
settingsImageView.image = UIImage(named: "CheckSettings")
scrollContentView.addSubview(settingsImageView)
// Title label
settingsTitleLabel = UILabel()
settingsTitleLabel.text = NSLocalizedString("checkSettingsTitle", comment: "")
settingsTitleLabel.textColor = .whiteColor()
settingsTitleLabel.font = UIFont(name: ApplicationFont.bold, size: Design.Constraints.settingsTitleLabelFontSize)
settingsTitleLabel.numberOfLines = 0
settingsTitleLabel.textAlignment = .Center
settingsTitleLabel.lineBreakMode = .ByWordWrapping
scrollContentView.addSubview(settingsTitleLabel)
// Lab test reminder
labTestReminderView = LMSettingView(frame: CGRectZero, title: NSLocalizedString("titleLabTestReminder", comment: ""), stringValue: "Yes, Monthly 10:00 AM starting at 16 May 2015", boolValue: true)
scrollContentView.addSubview(labTestReminderView)
// Self check reminder
selfCheckReminderView = LMSettingView(frame: CGRectZero, title: NSLocalizedString("titleSelfCheckReminder", comment: ""), stringValue: "Yes, Monthly 12:45 PM starting today", boolValue: true)
scrollContentView.addSubview(selfCheckReminderView)
// Weekly tip
weeklyTipView = LMSettingView(frame: CGRectZero, title: NSLocalizedString("titleWeeklyTips", comment: ""), stringValue: "On", boolValue: true)
scrollContentView.addSubview(weeklyTipView)
private func setupConstraints()
// Scroll View
scrollView.snp_makeConstraints make in
make.top.equalTo(snp_top)
make.left.equalTo(snp_left)
make.right.equalTo(snp_right)
make.bottom.equalTo(snp_bottom)
// Scroll Content View
scrollContentView.snp_makeConstraints make in
make.edges.equalTo(scrollView.snp_edges)
make.width.equalTo(scrollView.snp_width)
make.bottom.equalTo(weeklyTipView.snp_bottom)
// Image View
settingsImageView.snp_makeConstraints make in
make.top.equalTo(snp_top).offset(Design.Constraints.settingsImageViewTopOffset)
make.centerX.equalTo(snp_centerX)
// Title label
settingsTitleLabel.snp_makeConstraints make in
make.top.equalTo(settingsImageView.snp_bottom).offset(Design.Constraints.settingsTitleLabelTopOffset)
make.left.equalTo(snp_left).offset(Design.Constraints.settingsLeftRightOffset)
make.right.equalTo(snp_right).inset(Design.Constraints.settingsLeftRightOffset)
// Lab test reminder
labTestReminderView.snp_makeConstraints make in
make.top.equalTo(settingsTitleLabel.snp_bottom).offset(Design.Constraints.labTestReminderViewTopOffset)
make.left.equalTo(snp_left)
make.right.equalTo(snp_right)
make.height.equalTo(Design.Constraints.settingsViewHeight)
// Self check reminder
selfCheckReminderView.snp_makeConstraints make in
make.top.equalTo(labTestReminderView.snp_bottom)
make.left.equalTo(snp_left)
make.right.equalTo(snp_right)
make.height.equalTo(Design.Constraints.settingsViewHeight)
// Weekly tip
weeklyTipView.snp_makeConstraints make in
make.top.equalTo(selfCheckReminderView.snp_bottom)
make.left.equalTo(snp_left)
make.right.equalTo(snp_right)
make.height.equalTo(Design.Constraints.settingsViewHeight)
可以看到scrollContentView的设置为最新元素的底部。
我不知道为什么会这样。
【问题讨论】：
【参考方案1】：将此代码添加到您的视图控制器：
override func viewDidLayoutSubviews()
super.viewDidLayoutSubviews()
scrollView.contentSize = scrollContentView.bounds.size
【讨论】：
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