Summary of common problems in using UITableView in iOS

1. How to set headerView and its height

tableView.tableHeaderView = myHeaderView
 
let height = headerView.systemLayoutSizeFittingSize(UILayoutFittingCompressedSize).height
var frame = headerView.frame
frame.size.height = height
headerView.frame = frame

2. Remove the dividing line of redundant cell

self.tableView.tableFooterView = [[UIView alloc] initWithFrame:CGRectZero];

3. How to set section number and row number

extension MyViewController: UITableViewDataSource {
 
 // section Number 
 func numberOfSections(in: UITableView) -> Int {
 }
 
 // row Number 
 public func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
 }
 
 //  In section And row Under, cell
 public func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
 }
 
}

4. iOS 8 + Automatic calculation of row height and section height

tableView.estimatedRowHeight = 80
tableView.rowHeight = UITableViewAutomaticDimension

In fact, the height of sectionHeader can also be calculated automatically

tv.estimatedSectionHeaderHeight = 20
tv.sectionHeaderHeight = UITableViewAutomaticDimension

Of course, sectionFooter is ok, so I won't go into details

5. Disable the dividing line of tableview

tv.separatorStyle = .none

6. Set sectionHeader and sectionFooter and their heights

view

extension MyViewController: UITableViewDelegate {
 func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
 
 }
 
 func tableView(_ tableView: UITableView, viewForFooterInSection section: Int) -> UIView? {
 
 }
}

Height

extension TTEntranceExamReportViewController: UITableViewDelegate {
 func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
 }
 
 func tableView(_ tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
 }
}

7. Click cell to have a shadow. When you lift it, the shadow disappears

func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
 tableView.deselectRow(at: indexPath, animated: no)
 // other code
}

8. The problem of UITableViewCell automatic indentation of iPad

if (IS_IPAD && [_tableView respondsToSelector:@selector(setCellLayoutMarginsFollowReadableWidth:)]) {
 _tableView.cellLayoutMarginsFollowReadableWidth = NO;
}

Swift version:

self.tableView.tableFooterView = [[UIView alloc] initWithFrame:CGRectZero];

0

9. Set the click effect of UITableviewCell pressing

self.tableView.tableFooterView = [[UIView alloc] initWithFrame:CGRectZero];

1

PureColorView is a class that converts color into solid color View, which can be found on the Internet

10. sectionHeader does not attract roof

self.tableView.tableFooterView = [[UIView alloc] initWithFrame:CGRectZero];

2

11. After using. groupted, there is an extra blank space of 20px at the bottom of TableView

tv.tableFooterView = UIView(frame: CGRect(x: 0, y: 0, width: 1, height: CGFloat.leastNormalMagnitude))

12. On the ios 8 system, click cell push1 vc, and then pop comes back, and some cell heights will be messed up

Need to force the lower estimated height

Portal

self.tableView.tableFooterView = [[UIView alloc] initWithFrame:CGRectZero];

4

Summarize