通知中心今天小部件闪烁然后 "unable to load" Swift

Question

我正在开发一个简单的提醒应用程序，我运行在使用 Today Extension 时遇到了一些麻烦。该扩展在我的 iPad 和模拟器中完美运行，但是在我的 iPhone 上它在显示 "Unable to Load" 消息之前闪烁两次。我认为这是由某种内存问题引起的，因为在我的一个调试会话中调用了 didRecieveMemoryWarning，但通常我收到的唯一控制台输出是 "Program ended with exit code: 0." 任何帮助将不胜感激。这是我的 Today Extension 代码：

import UIKit
import NotificationCenter

class TodayViewController: UITableViewController, NCWidgetProviding {
let repeatTitles = ["No Repeat", "Repeat Every Minute", "Repeat Hourly", "Repeat Daily", "Repeat Weekly", "Repeat Monthly", "Repeat Annually", "Repeat Monthly Week Number", "Repeat Annual Week Number"]
var mainColor = UIColor(colorLiteralRed: 57/255, green: 181/255, blue: 74/255, alpha: 1.0)
var secondColor = UIColor(colorLiteralRed: 95/255, green: 147/255, blue: 196/255, alpha: 1.0)

var objects = [NSArray]()
override func viewDidLoad() {
    super.viewDidLoad()

    }


override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
    print("MEMORY WARNING NC")

}


override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
    return 1
}

override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return objects.count
}

override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath)

    let object = objects[indexPath.row] as NSArray
    if object[7] as! String == "CREATEONE" || object[7] as! String == "MOREMEMOS" {
        cell.detailTextLabel!.text = object[2] as? String
        cell.detailTextLabel!.textColor = secondColor
        cell.detailTextLabel!.font = UIFont.systemFontOfSize(16)
    }
    else {
        cell.textLabel!.text = object[2] as? String
        if let theDateToStore = object[4] as? NSDate {
            if object[6] as! Bool == true {
                if (object[3] as! String).stringByTrimmingCharactersInSet(NSCharacterSet.whitespaceAndNewlineCharacterSet()) == "" {
                    cell.detailTextLabel!.text = "Memo Muted"
                }
                else {
                    cell.detailTextLabel!.text = "Memo Muted- \(object[3] as! String)"
                }
            }
            else {
                let timestamp = NSDateFormatter.localizedStringFromDate(theDateToStore, dateStyle: .ShortStyle, timeStyle: .ShortStyle)
                let repeatTitle = repeatTitles[(object[5] as? Int)!]
                if (object[3] as! String).stringByTrimmingCharactersInSet(NSCharacterSet.whitespaceAndNewlineCharacterSet()) == "" {
                    cell.detailTextLabel!.text = "\(timestamp): \(repeatTitle)"
                }
                else {
                    cell.detailTextLabel!.text = "\(timestamp): \(repeatTitle)- \(object[3] as! String)"
                }
            }
        }
        else {
            if (object[3] as! String).stringByTrimmingCharactersInSet(NSCharacterSet.whitespaceAndNewlineCharacterSet()) == "" {
                cell.detailTextLabel!.text = "Memo Muted"
            }
            else {
                cell.detailTextLabel!.text = "Memo Muted- \(object[3] as! String)"
            }
        }
        cell.textLabel!.textColor = mainColor
        cell.detailTextLabel!.textColor = UIColor.whiteColor()
    }
    return cell
}
func updateWithChanges(){
    var newObjects = NSUserDefaults(suiteName: "group.Me.MemosApp")!.objectForKey("cashedMemos") as? [NSArray]
    if newObjects == nil {
        newObjects = [NSArray]()
    }
    else {
        if newObjects!.count > 5 {
            for i in stride(from: newObjects!.count - 1, through: 5, by: -1) {
                newObjects!.removeAtIndex(i)
            }
            newObjects!.append([0, true, "More Memos", "", "", 0, false, "MOREMEMOS"])
        }
    }
    newObjects!.append([0, true, "Create a New Memo", "", "", 0, false, "CREATEONE"])
    objects = newObjects!
    newObjects = nil
    tableView.reloadData()
    updatePreferredContentSize()
}

override func viewWillAppear(animated: Bool) {
    updateWithChanges()
}
override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
    if let object = objects[indexPath.row] as NSArray? {
        if object[7] as! String == "CREATEONE" {
            self.extensionContext?.openURL(NSURL(string: "MemosApp://createMemo")!, completionHandler: nil)
        }
        else if object[7] as! String == "MOREMEMOS" {
            self.extensionContext?.openURL(NSURL(string: "MemosApp://moreMemosFromNC")!, completionHandler: nil)
        }
        else {
            let idNum = object[0] as! Int
            let deviceID = object[7] as! String
            let memoID = "m\(idNum)\(deviceID)"
            self.extensionContext?.openURL(NSURL(string: "MemosApp://openMemo?\(memoID)")!, completionHandler: nil)
        }
    }
    tableView.deselectRowAtIndexPath(indexPath, animated: true)
}

func widgetPerformUpdateWithCompletionHandler(completionHandler: ((NCUpdateResult) -> Void)) {
    completionHandler(NCUpdateResult.NoData)
}
func widgetMarginInsetsForProposedMarginInsets
    (defaultMarginInsets: UIEdgeInsets) -> (UIEdgeInsets) {
        return UIEdgeInsetsZero
}
func updatePreferredContentSize() {
    preferredContentSize = CGSizeMake(CGFloat(0), CGFloat((objects.count * 50) - 1))//+ tableView.sectionFooterHeight)
}
}

Today Extension 从 NSUserDefaults 共享组中的一个对象加载一个已兑现的备忘录数组。代码写在Swift 2.0.

Answer 1

我注意到您对 colorLiteralRed 使用了整数。这是你想要的吗？

Answer 2

原来我在 tableView 的基本单元格中创建了一个额外的 UILabel（尽管在 NC 中有透明背景，但用于使单元格可点击）并且这个标签的长度导致小部件使用内存太大。

通知中心今天小部件闪烁然后 "unable to load" Swift

Notification center today widget flashes and then "unable to load" Swift

iphone

ios

swift

today-extension

swift2