我对 iphone4s 上的表格视图和单元格的外观有一些问题。在模拟器和新设备上一切都很好。
UITableViewController 自定义表格单元格（图 1）未正确显示。所有标签等都位于彼此之上。它们应该像在模拟器上一样显示在另一个下方。
ViewController 和 TableView 其他自定义单元格在 iPhone4s 上甚至不显示，只出现一个灰色方块。
我正在使用自动布局。你有什么建议吗？
这是代码：第一张图片：
import UIKit
class FeedController: TableViewController {
override func viewDidLoad() {
super.viewDidLoad()
// adjusting text size without quitting app
NSNotificationCenter.defaultCenter().addObserver(self,
selector: "onContentSizeChange:",
name: UIContentSizeCategoryDidChangeNotification,
object: nil)
// set table row height
tableView.estimatedRowHeight = 89
tableView.rowHeight = UITableViewAutomaticDimension
// removes the back button after clicked on send button to write a post
self.navigationItem.hidesBackButton = true
// refresh control
self.refreshControl = UIRefreshControl()
self.refreshControl!.addTarget(self, action: Selector("refresh:"), forControlEvents: UIControlEvents.ValueChanged)
self.refreshControl!.backgroundColor = UIColor.grayColor()
self.refreshControl!.tintColor = UIColor.whiteColor()
self.tableView.addSubview(refreshControl!)
}
func reloadFeed(note: NSNotification){
tableView.reloadData()
}
func refresh(sender: AnyObject){
self.refreshControl!.endRefreshing()
}
// called when the text size was changed by the user
func onContentSizeChange(notification: NSNotification) {
tableView.reloadData()
}
}
import Foundation
import UIKit
class TableViewController: UITableViewController, UITableViewDelegate, UITableViewDataSource, PDeliversStatusAlerts {
let notifCenter = NSNotificationCenter.defaultCenter()
override init() {
super.init()
notifCenter.addObserver(self, selector: "displayConnectionLostAlert", name: kConnectionLostNotification, object: self)
}
required init(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
notifCenter.addObserver(self, selector: "displayConnectionLostAlert", name: kConnectionLostNotification, object: self)
}
func displaySimpleAlert(#title:String, message:String){
var alert = UIAlertController(title: title, message: message, preferredStyle: UIAlertControllerStyle.Alert)
alert.addAction(UIAlertAction(title: "Ok", style: UIAlertActionStyle.Default, handler: nil))
self.presentViewController(alert, animated: true, completion: nil)
}
func displayModalDialog(#title: String, message: String, yesHandler: ((UIAlertAction!) -> Void)?, noHandler: ((UIAlertAction!) -> Void)?) {
var alert = UIAlertController(title: title, message: message, preferredStyle: UIAlertControllerStyle.Alert)
alert.addAction(UIAlertAction(title: "Cancel", style: UIAlertActionStyle.Default, handler: yesHandler))
alert.addAction(UIAlertAction(title: "Yes", style: UIAlertActionStyle.Default, handler: noHandler))
self.presentViewController(alert, animated: true, completion: nil)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
func push(sender: AnyObject) {
}
//Tableview
override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return 1
}
override func tableView(tableView: UITableView, canEditRowAtIndexPath indexPath: NSIndexPath) -> Bool {
return false
}
第二张图：
import UIKit
class NextViewController: ViewController, UITableViewDelegate, UITableViewDataSource{
var followedFeed : FollowedHashtagFeed?
var hottestFeed : HottestHashtagFeed?
var nearbyFeed : NearbyHashtagFeed?
var hashtagFeed : HashtagFeed?
@IBAction func hottestButtonTapped(sender:AnyObject) {
hashtagFeed = FeedFactory.instance().hottestHashtagFeed()
notifCenter.removeObserver(self)
notifCenter.addObserver(self, selector: "reloadFeed", name: hashtagFeed?.notificationName, object: nil)
hashtagFeed!.subscribe()
reloadFeed()
}
@IBAction func nearbyButtonTapped(sender: AnyObject) {
hashtagFeed = FeedFactory.instance().nearbyHashtagFeed()
notifCenter.removeObserver(self)
notifCenter.addObserver(self, selector: "reloadFeed", name: hashtagFeed?.notificationName, object: nil)
notifCenter.addObserver(self, selector: "didReceiveLocationPermissionNeededNotification:", name: "location_permission_needed", object: nil)
hashtagFeed!.subscribe()
reloadFeed()
}
@IBAction func followedButtonTapped(sender: AnyObject) {
hashtagFeed = FeedFactory.instance().followedHashtagFeed()
notifCenter.removeObserver(self)
notifCenter.addObserver(self, selector: "reloadFeed", name: hashtagFeed?.notificationName, object: nil)
hashtagFeed!.subscribe()
reloadFeed()
}
override func viewDidLoad() {
super.viewDidLoad()
//set table row height
tableView.rowHeight = UITableViewAutomaticDimension
//load feed cell
var nipName=UINib(nibName: "NextTableCell", bundle:nil)
self.tableView.registerNib(nipName, forCellReuseIdentifier: "nextCell")
followedButtonTapped(followedButton)
view.setNeedsLayout()
view.layoutIfNeeded()
println("Frame Height:")
println(tableView.frame.height)
println(tableView.bounds.height)
println("Frame Width:")
println(self.tableView.frame.width)
println(self.tableView.bounds.width)
/*
hashtagFeed = FeedFactory.instance().followedHashtagFeed()
//subscribe to feed changes
notifCenter.addObserver(self, selector: "reloadFeed", name: hashtagFeed?.notificationName, object: nil)
hashtagFeed!.subscribe()*/
}
func didReceiveLocationPermissionNeededNotification(note: NSNotification){
displayModalDialog(
title: "Location Permission Needed",
message: "In order to use this functionality the app needs your permission to use location data - do you want to give this permission now?",
yesHandler: {
(action: UIAlertAction!) in LocationHelper.instance().askForPermission()
},
noHandler: nil
)
}
//Tableview
func reloadFeed(){
tableView.reloadData()
}
func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return 1
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return hashtagFeed!.count
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("nextCell", forIndexPath: indexPath) as NextTableCell
let hashtag = hashtagFeed!.toArray()[indexPath.row]
cell.loadItem(hashtag)
return cell
}
func tableView(tableView: UITableView!, didSelectRowAtIndexPath indexPath: NSIndexPath!) {
}
}