【发布时间】:2018-08-21 08:02:22
【问题描述】:
我正在尝试更改导航栏的背景颜色,但遇到了问题:
let colourRGBs: [[CGFloat]] = [[247, 247, 247], [38, 123, 238], [93, 204, 3]]
let colourTitles: [String] = ["Default", "Blue", "Green"]
override func viewDidLoad() {
super.viewDidLoad()
// Uncomment the following line to preserve selection between presentations
// self.clearsSelectionOnViewWillAppear = false
// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
// self.navigationItem.rightBarButtonItem = self.editButtonItem
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// MARK: - Table view data source
override func numberOfSections(in tableView: UITableView) -> Int {
// #warning Incomplete implementation, return the number of sections
return 1
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// #warning Incomplete implementation, return the number of rows
return colourTitles.count
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "PickNavBarColourCell", for: indexPath) as! PickNavBarColourCell
let RGB = colourRGBs[indexPath.row]
cell.backgroundColor = UIColor(red: RGB[0]/255.0, green: RGB[1]/255.0, blue: RGB[2]/255.0, alpha: 1.0)
cell.configureCell(text: colourTitles[indexPath.row])
if indexPath.row == passOnNavBarColour.colour {
cell.accessoryType = UITableViewCellAccessoryType.checkmark
}
else {
cell.accessoryType = UITableViewCellAccessoryType.none
}
return cell
}
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
UserDefaults.standard.set(indexPath.row, forKey: "NavBarColour")
passOnNavBarColour.colour = indexPath.row
tableView.reloadData()
let RGB = colourRGBs[indexPath.row]
self.navigationController?.navigationBar.backgroundColor = UIColor(red: RGB[0]/255.0, green: RGB[1]/255.0, blue: RGB[2]/255.0, alpha: 1.0)
}
override func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return 44
}
它比应有的要暗得多。
我尝试了以下代码:
self.navigationController?.navigationBar.isTranslucent = false
我在设置单元格背景颜色之前运行的
self.navigationController?.navigationBar.backgroundColor = UIColor(red: RGB[0]/255.0, green: RGB[1]/255.0, blue: RGB[2]/255.0, alpha: 1.0)
但是这不会导致任何颜色变化。
我该如何解决这个问题?
【问题讨论】:
-
您是否将以下代码放入 viewDidLoad 方法?
-
否 - 该代码属于整个视图控制器
标签: ios swift xcode uinavigationcontroller uinavigationbar