保存並重新加載按鈕查看（哪裏是錯誤？）

Question

對不起，如果我重複這個問題，但是新的我仍然必須學習如何響應等規則。 感謝您的幫助，我得到了這一點：我可以通過我的UIView上的AddButton創建10個不同的按鈕。當我再次關閉我的應用程序時，10個按鈕消失。那麼我的用戶被迫重新創建10個按鈕。 如何保存從我的用戶創建的按鈕？

我會用這種方法更好，因爲如果我要使用其他日期也可以是有用

我具有用戶數據保存到文件成功：是

但是，不要走！

如果我關閉並重新啓動應用程序的按鈕不再出現

哪裏是錯誤？

編輯我的文件的.h以這種方式

{ 
    IBOutlet UIButton * button2; 
    IBOutlet UIButton * Button1; 
    IBOutlet UIButton * Button2; 
    IBOutlet UIButton * Button3; 
    } 
    @property (nonatomic, strong) NSArray * myArray; 
    @property (nonatomic, retain) UIButton * Scenario1; 
    @property (nonatomic, retain) UIButton * Scenario2; 
    @property (nonatomic, retain) UIButton * Scenario3; 
    - (IBAction) Button1: (UIButton *) sender; 
    - (IBAction) Button2: (UIButton *) sender; 
    - (IBAction) Button3: (UIButton *) sender; 

開文件的.m

 @synthesize myArray; 
     @synthesize Button1; 
     @synthesize Button2; 
     @synthesize Button3; 

     -(void) AddButton: (UIButton *) sender { 
    CountButton + +; 
     if (CountButton <11) { 
     button2 = [UIButton buttonWithType: UIButtonTypeCustom]; 
     button2.frame = CGRectMake (20, 80, 120, 80); 
    UIImage *ButtonImage = [UIImage imageNamed: @ "image"]; 
     [Button2 setBackgroundImage: ButtonImage forState: UIControlStateNormal]; NSString * buttonTitle = [NSString stringWithFormat: @ "Button% d", CountButton]; 
     [Button2 setTitle: buttonTitle forState: UIControlStateNormal]; 
     NSString *selectorName = [NSString stringWithFormat: @ "% d ButtonAdd:" CountButton]; 
     [Button2 addTarget: self action: NSSelectorFromString (selectorName) forControlEvents: UIControlEventTouchUpInside]; 
     NSArray * = documentDirectories NSSearchPathForDirectoriesInDomains (NSDocumentDirectory, NSUserDomainMask, YES); 
     NSMutableString * documentDirectory = [documentDirectories objectAtIndex: 0]; 
     NSArray * myArray = [[NSArray alloc] initWithObjects: Button1, Button2, Button3, nil]; 
     NSString * filePath = [documentDirectory stringByAppendingPathComponent: @ "UserButtons"]; 
     BOOL FileError = [myArray writeToFile: filePath atomically: YES]; 
     NSLog (@ "User date to file successful:% @", (FileError? @ "Yes": @ "No")); 
     } 
     } 

    -(void) viewDidLoad { 
    [Super viewDidLoad]; 
    NSArray * = documentDirectories NSSearchPathForDirectoriesInDomains (NSDocumentDirectory, NSUserDomainMask, YES); 
    NSMutableString * documentDirectory = [documentDirectories objectAtIndex: 0]; 
    NSString * myPath = [documentDirectory stringByAppendingPathComponent: @ "UserButtons"]; 
    NSArray * fileArray = [[NSArray alloc] initWithContentsOfFile: myPath]; 
    if ([fileArray count]> 0) 
    { 
     // Place your buttons back into the view. 
     [Self.view addSubview: [fileArray objectAtIndex: 0]]; 
    } 
    } 

Answer 1

文件名中缺少你所寫的內容。

嘗試保存DATAS像這樣的東西：

NSString *myFile = @"myFile.plist"; 
NSArray *filePaths = NSSearchPathForDirectoriesInDomains (NSDocumentDirectory, NSUserDomainMask, YES); 
NSString *documentsDirectory = [filePaths objectAtIndex:0]; 
NSString *path = [documentsDirectory stringByAppendingPathComponent:myFile]; 
[myArray writeToFile:path atomically:YES];