我在玩苹果的新Swift编程语言,遇到了一些问题…
目前我试图读取一个plist文件,在Objective-C中,我会做以下工作来获取内容作为NSDictionary:
NSString *filePath = [[NSBundle mainBundle] pathForResource:@"Config" ofType:@"plist"];
NSDictionary *dict = [[NSDictionary alloc] initWithContentsOfFile:filePath];
我如何得到一个plist作为一个字典在Swift?
我假设我可以得到路径到plist:
let path = NSBundle.mainBundle().pathForResource("Config", ofType: "plist")
当这工作(如果它是正确的?):我如何获得内容作为一个字典?
还有一个更普遍的问题:
是否可以使用默认的NS*类?我想是的……还是我遗漏了什么?据我所知,默认框架NS*类仍然有效,可以使用吗?
Swift 2.0:访问信息。Plist
我有一个名为CoachMarksDictionary的字典,在信息中具有布尔值。Plist。我想访问bool值并使其为真。
let path = NSBundle.mainBundle().pathForResource("Info", ofType: "plist")!
let dict = NSDictionary(contentsOfFile: path) as! [String: AnyObject]
if let CoachMarksDict = dict["CoachMarksDictionary"] {
print("Info.plist : \(CoachMarksDict)")
var dashC = CoachMarksDict["DashBoardCompleted"] as! Bool
print("DashBoardCompleted state :\(dashC) ")
}
写给Plist:
自定义Plist:-
Make from File-New-File-Resource-PropertyList。增加了三个字符串:DashBoard_New, DashBoard_Draft, DashBoard_Completed)
func writeToCoachMarksPlist(status:String?,keyName:String?)
{
let path1 = NSBundle.mainBundle().pathForResource("CoachMarks", ofType: "plist")
let coachMarksDICT = NSMutableDictionary(contentsOfFile: path1!)! as NSMutableDictionary
var coachMarksMine = coachMarksDICT.objectForKey(keyName!)
coachMarksMine = status
coachMarksDICT.setValue(status, forKey: keyName!)
coachMarksDICT.writeToFile(path1!, atomically: true)
}
该方法可以调用为
self.writeToCoachMarksPlist(" true - means user has checked the marks",keyName: "the key in the CoachMarks dictionary").
在SWIFT语言中,你可以这样读plist:
let path = NSBundle.mainBundle().pathForResource("PriceList", ofType: "plist")
let dict = NSDictionary(contentsOfFile: path)
读单个字典值:
let test: AnyObject = dict.objectForKey("index1")
如果你想在plist中获得完整的多维字典:
let value: AnyObject = dict.objectForKey("index2").objectForKey("date")
下面是plist:
<plist version="1.0">
<dict>
<key>index2</key>
<dict>
<key>date</key>
<string>20140610</string>
<key>amount</key>
<string>110</string>
</dict>
<key>index1</key>
<dict>
<key>amount</key>
<string>125</string>
<key>date</key>
<string>20140212</string>
</dict>
</dict>
</plist>
Swift -读写plist和文本文件....
override func viewDidLoad() {
super.viewDidLoad()
let fileManager = (NSFileManager .defaultManager())
let directorys : [String]? = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory,NSSearchPathDomainMask.AllDomainsMask, true) as? [String]
if (directorys != nil){
let directories:[String] = directorys!;
let dictionary = directories[0]; //documents directory
// Create and insert the data into the Plist file ....
let plistfile = "myPlist.plist"
var myDictionary: NSMutableDictionary = ["Content": "This is a sample Plist file ........."]
let plistpath = dictionary.stringByAppendingPathComponent(plistfile);
if !fileManager .fileExistsAtPath(plistpath){//writing Plist file
myDictionary.writeToFile(plistpath, atomically: false)
}
else{ //Reading Plist file
println("Plist file found")
let resultDictionary = NSMutableDictionary(contentsOfFile: plistpath)
println(resultDictionary?.description)
}
// Create and insert the data into the Text file ....
let textfile = "myText.txt"
let sampleText = "This is a sample text file ......... "
let textpath = dictionary.stringByAppendingPathComponent(textfile);
if !fileManager .fileExistsAtPath(textpath){//writing text file
sampleText.writeToFile(textpath, atomically: false, encoding: NSUTF8StringEncoding, error: nil);
} else{
//Reading text file
let reulttext = String(contentsOfFile: textpath, encoding: NSUTF8StringEncoding, error: nil)
println(reulttext)
}
}
else {
println("directory is empty")
}
}