保存UITextfield信息的問題

Question

我在嘗試使用NSUserdefaults保存UITextFields信息時遇到問題（崩潰）。我知道它與我正在使用的陣列有關。下面是代碼：

- (IBAction)generateNumbers 
{ 
    // release and remove everyting from the name array 
    // [nameArray release]; 
    nameArray = nil; 

    // reinitilize the name array 
    nameArray = [[NSMutableArray alloc] init]; 

    // Loop through the textfields to get the names into the nameArray 
    for (int textFieldCount = 0; textFieldCount<[textFieldArray count]; textFieldCount++) { 
     [nameArray addObject:[[textFieldArray objectAtIndex:textFieldCount] text]]; 
    } 

    // Randomly sort the names in the array 
    [nameArray sortUsingFunction:randomSort context:nil]; 

    // Add the random names back into the text fields 
    for (int textFieldCount = 0; textFieldCount<[textFieldArray count]; textFieldCount++) { 
     [[textFieldArray objectAtIndex:textFieldCount] setText:[nameArray  objectAtIndex:textFieldCount]]; 
    } 
} 

     int randomSort(id obj1, id obj2, void *context) { 
     // returns random number -1 0 1 
     return (arc4random()%3 - 1); 
} 

---

- (void)viewWillAppear:(BOOL)animated { 
      [super viewWillAppear:animated]; 
      [tex1 setText:[[NSUserDefaults standardUserDefaults]   objectForKey:@"storedTextValue48"]]; 

---

- (void)viewWillDisappear:(BOOL)animated { 
    [super viewWillDisappear:animated]; 
     [[NSUserDefaults standardUserDefaults] setObject:tex1.text forKey:@"storedTextValue48"]; 

Answer 1

不要忘了使用，當你保存數據synchronize方法：

[[NSUserDefaults standardUserDefaults] synchronize];