我在表格视图中添加了一个搜索栏,当用户搜索时,我希望表格视图滚动到您键入的文本。
如何自动滚动滚动视图?
这是我尝试过的,但是我得到一个错误,说Integer不能转换为索引Path。我该怎么办?
self.tableview.scrollToRowAtIndexPath(1, atScrollPosition: UITableViewScrollPosition.Middle, animated: true)
或
self.tableview.scrollToNearestSelectedRowAtScrollPosition(scrollPosition: UITableViewScrollPosition.Middle, animated: true)
答案 0 :(得分:29)
您必须按以下方式调用方法scrollToRowAtIndexPath
:
var indexPath = NSIndexPath(forRow: numberOfRowYouWant, inSection: 0)
self.tableview.scrollToRowAtIndexPath(indexPath,
atScrollPosition: UITableViewScrollPosition.Middle, animated: true)
上面的例子假设你只有一个部分。我希望这能帮到你。
对于Swift 3:
let indexPath = NSIndexPath(item: numberOfRowYouWant, section: 2)
tableView.scrollToRow(at: indexPath as IndexPath, at: UITableViewScrollPosition.middle, animated: true)
答案 1 :(得分:9)
对于Swift 4.2(Xcode 12.1):
let numberOfSections = self.tableView.numberOfSections
let numberOfRows = self.tableView.numberOfRows(inSection: numberOfSections-1)
let indexPath = IndexPath(row: numberOfRows-1 , section: numberOfSections-1)
self.tableView.scrollToRow(at: indexPath, at: UITableView.ScrollPosition.middle, animated: true)
对于Swift 2:
let numberOfSections = self.tableView.numberOfSections
let numberOfRows = self.tableView.numberOfRows(inSection: numberOfSections-1)
let indexPath = IndexPath(row: numberOfRows-1 , section: numberOfSections-1)
self.tableView.scrollToRow(at: indexPath, at: UITableViewScrollPosition.middle, animated: true)
答案 2 :(得分:5)
如果您想自动向下滚动:
numberOfSections = tableView.numberOfSections()
let numberOfRows = tableView.numberOfRowsInSection(numberOfSections-1)
var indexPath = NSIndexPath(forRow: numberOfRows, inSection: numberOfSections)
self.tableview.scrollToRowAtIndexPath(indexPath,
atScrollPosition: UITableViewScrollPosition.Middle, animated: true)
答案 3 :(得分:3)
这里是Swift 2.0版本,根据此帖子前面的Thiago代码滚动到多个部分的最后一行:
let numberOfSections = self.tableView.numberOfSections
let numberOfRows = self.tableView.numberOfRowsInSection(numberOfSections-1)
print ("scrolling to bottom row \(numberOfRows)")
let indexPath = NSIndexPath(forRow: numberOfRows-1, inSection: numberOfSections-1)
self.tableView.scrollToRowAtIndexPath(indexPath,
atScrollPosition: UITableViewScrollPosition.Middle, animated: true)
答案 4 :(得分:0)
SWIFT 4
/* Variables */
var scrollTimer = Timer()
// AN AUTOMATIC SCROLL OF THE YOUT IMAGE
scrollTimer = Timer.scheduledTimer(timeInterval: 3.0, target: self, selector: #selector(automaticScroll), userInfo: nil, repeats: true)
// MARK: - SCROLLVIEW DELEGATE: SHOW CURRENT PAGE IN THE PAGE CONTROL
func scrollViewDidScroll(_ scrollView: UIScrollView) {
let pageWidth = containerScrollView.frame.size.width
let page = Int(floor((containerScrollView.contentOffset.x * 2 + pageWidth) / (pageWidth * 2)))
pageControl.currentPage = page
}
// MARK: - AUTOMATIC SCROLL
@objc func automaticScroll() {
var scroll = containerScrollView.contentOffset.x
if scroll < CGFloat(view.frame.size.width) * CGFloat(numberOfImages-1) {
scroll += CGFloat(view.frame.size.width)
containerScrollView.setContentOffset(CGPoint(x: scroll, y:0), animated: true)
} else {
// Stop the timer
scrollTimer.invalidate()
}
}
答案 5 :(得分:-1)
i