我有一个表格视图，其中的行填充了数组中的数据。通过调用此函数在 viewDidLoad() 中动态设置行高：
func configureTableView() {
/* When you set the rowHeight as UITableViewAutomaticDimension, the table view knows to use the auto layout constraints to determine each cell’s height. This also reuqires a estimetedRowHeoght, an arbitary number */
println("Configure Table View called")
tableView.estimatedRowHeight = 74.0;
tableView.rowHeight = UITableViewAutomaticDimension;
tableView.separatorStyle = UITableViewCellSeparatorStyle.None;
}
填充每一行的数据正在从 Parse 加载到数组中。一旦将数据加载到数组中，我就会调用：
self.tableView.reloadData();
self.configureTableView();
...为了重新加载表行数据，然后根据行内填充标签的注释大小动态重新配置行高。
问题有两个方面：
- 只有某些行的高度是动态设置的，其他行的行高似乎是固定的，如果超过一行，您将无法查看评论
- 当用户滚动 tableview 时，刷新的视图所有行都是静态的，似乎没有动态设置高度，只能看到一行注释。
任何输入表示赞赏
我还使用了一个页脚视图，它是用代码以编程方式创建的，以允许显示和隐藏键盘，我认为这可能与它有关....
// viewDidlLoad
/* Setup the keyboard notifications so does not block textview for adding comments */
NSNotificationCenter.defaultCenter().addObserver(self, selector: "keyBoardWillShow:", name: UIKeyboardWillShowNotification, object: nil)
NSNotificationCenter.defaultCenter().addObserver(self, selector: "keyBoardWillHide:", name: UIKeyboardWillHideNotification, object: nil)
/* Setup the contentInsets fo keyboard */
self.tableView.contentInset = UIEdgeInsetsZero
self.tableView.scrollIndicatorInsets = UIEdgeInsetsZero
self.edgesForExtendedLayout = UIRectEdge.None
/* Make sure the content doesn't go below tabbar/navbar */
self.extendedLayoutIncludesOpaqueBars = true
self.automaticallyAdjustsScrollViewInsets = false
提前道歉，但此处分配代码用于设置页脚视图和处理用户输入......
func tableView(tableView: UITableView, viewForFooterInSection section: Int) -> UIView? {
footerView = UIView(frame: CGRect(x: 0, y: 0, width: tableView.bounds.width, height: FOOTERHEIGHT))
footerView?.backgroundColor = UIColor(red: 243.0/255, green: 243.0/255, blue: 243.0/255, alpha: 1)
commentView = UITextView(frame: CGRect(x: 10, y: 5, width: tableView.bounds.width - 80 , height: 40))
commentView?.backgroundColor = UIColor.whiteColor()
commentView?.textContainerInset = UIEdgeInsetsMake(5, 5, 5, 5)
commentView?.layer.cornerRadius = 2
commentView?.scrollsToTop = true
footerView?.addSubview(commentView!)
let button = UIButton(frame: CGRect(x: tableView.bounds.width - 65, y: 10, width: 60 , height: 30))
button.setTitle("Reply", forState: UIControlState.Normal)
button.backgroundColor = UIColor(red: 155.0/255, green: 189.0/255, blue: 113.0/255, alpha: 1)
button.layer.cornerRadius = 5
button.addTarget(self, action: "reply", forControlEvents: UIControlEvents.TouchUpInside)
footerView?.addSubview(button)
commentView?.delegate = self
return footerView
}
func tableView(tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
if self.footerView != nil {
return self.footerView!.bounds.height
}
return FOOTERHEIGHT
func keyBoardWillShow(notification: NSNotification) {
// Called in viewDidlOad, make sure keyoard doe snot cover add comments textview in table voew footer
var info:NSDictionary = notification.userInfo!
var keyboardSize = (info[UIKeyboardFrameBeginUserInfoKey] as NSValue).CGRectValue()
var keyboardHeight:CGFloat = keyboardSize.height - 40
var animationDuration:CGFloat = info[UIKeyboardAnimationDurationUserInfoKey] as CGFloat
var contentInsets: UIEdgeInsets = UIEdgeInsetsMake(0.0, 0.0, keyboardHeight, 0.0);
self.tableView.contentInset = contentInsets
self.tableView.scrollIndicatorInsets = contentInsets
}
func keyBoardWillHide(notification: NSNotification) {
//As above
self.tableView.contentInset = UIEdgeInsetsZero
self.tableView.scrollIndicatorInsets = UIEdgeInsetsZero
}
func textViewDidChange(textView: UITextView) {
// Allow for dynamic changing if TableView Footer textview size when commenst added
if (contentHeight == 0) {
contentHeight = commentView!.contentSize.height
}
if(commentView!.contentSize.height != contentHeight && commentView!.contentSize.height > footerView!.bounds.height) {
UIView.animateWithDuration(0.2, animations: { () -> Void in
let myview = self.footerView
println(self.commentView!.contentSize.height)
println(self.commentView?.font.lineHeight)
let newHeight : CGFloat = self.commentView!.font.lineHeight
let myFrame = CGRect(x: myview!.frame.minX, y: myview!.frame.minY - newHeight , width: myview!.bounds.width, height: newHeight + myview!.bounds.height)
myview?.frame = myFrame
let mycommview = self.commentView
let newCommHeight : CGFloat = self.commentView!.contentSize.height
let myCommFrame = CGRect(x: mycommview!.frame.minX, y: mycommview!.frame.minY, width: mycommview!.bounds.width, height: newCommHeight)
mycommview?.frame = myCommFrame
self.commentView = mycommview
self.footerView = myview
for item in self.footerView!.subviews {
if(item.isKindOfClass(UIButton.self)){
let button = item as UIButton
let newY = self.footerView!.bounds.height / 2 - button.bounds.height / 2
let buttonFrame = CGRect(x: button.frame.minX, y: newY , width: button.bounds.width, height : button.bounds.height)
button.frame = buttonFrame
}
}
})
println(self.footerView?.frame)
println(self.commentView?.frame)
contentHeight = commentView!.contentSize.height
}
}
func reply() {
// When Add button clicked in custom TabkeView Footer
println("User added comment: \(commentView?.text)");
self.commentView?.resignFirstResponder()
//userComments = commentView!.text;
//addComment();
self.tableView.reloadData()
//self.configureTableView();
}