使UItextField文本不可選擇，同時仍然可以與文本字段進行交互

Question

需要防止這種類型的UI交互我有一個文本字段，在該文本字段上選擇顯示UIPicker。 選擇器辭職第一響應者后，將從UIPicker選擇的項目顯示在textField中。 但是，如果我長按UITextField，它將為我提供選擇textField文本的選項。

任何變通辦法或解決方案將不勝感激。

 UITextField *CatpickerField = [[UITextField alloc] initWithFrame:self.categoryView.bounds];
CatpickerField.backgroundColor = [UIColor clearColor];
[[CatpickerField valueForKey:@"textInputTraits"] setValue:[UIColor clearColor] forKey:@"insertionPointColor"];


CatpickerField .textAlignment = NSTextAlignmentRight;
CatpickerField.text= @"Category";
UIPickerView * pickerCAt = [UIPickerView new];
pickerCAt.backgroundColor = [UIColor whiteColor];
pickerCAt.tag=1001;
pickerCAt.delegate = self;
pickerCAt.dataSource = self;
pickerCAt.showsSelectionIndicator = NO;

UIToolbar *toolBarcat= [[UIToolbar alloc] initWithFrame:CGRectMake(0,0,320,44)];
[toolBar1 setBarStyle:UIBarStyleBlack];
UIBarButtonItem *buttonCancelcat=[[UIBarButtonItem alloc]initWithTitle:@"Cancel" style:UIBarButtonItemStylePlain  target:self action:@selector(barButtonCancelAction:)];
UIBarButtonItem *buttonDonecat=[[UIBarButtonItem alloc]initWithTitle:@"Done" style:UIBarButtonItemStylePlain  target:self action:@selector(barButtonAction:)];
UIBarButtonItem *flexiblecat = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
toolBarcat.items = [NSArray arrayWithObjects:buttonCancelcat,flexiblecat,buttonDonecat,nil];

CatpickerField.inputView = pickerCAt;
CatpickerField.inputAccessoryView = toolBar1;

self.CatPickerviewField = CatpickerField;
[self.categoryView addSubview:self.CatPickerviewField];

1個

Answer 1

將LongPressGestureRecognizer添加到UITextField。

UILongPressGestureRecognizer *lpgr 
   = [[UILongPressGestureRecognizer alloc]
                 initWithTarget:self action:@selector(enableTextField)];
lpgr.delegate = self;
lpgr.delaysTouchesBegan = YES;
[self.textField addGestureRecognizer:lpgr];

並處理：

 -(void)enableTextField
  {
     textField.enabled = YES;
  }