使用自定义 inputView 点击 UITextField 时关闭键盘

Question

我有三个 UITextFields

UITextField1

UITextField2

UITextField3

编辑完 textField2 后，我点击键盘上的“下一步”，它隐藏了键盘，但没有显示选择器。

如果我完成了 textField2 的编辑并且没有关闭键盘并点击 textField3，则键盘不会隐藏并且选择器显示在键盘上方，那么除非我返回到 textField2 并在任何 textField 之外点击，否则无法关闭键盘。

sn-p:

- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
    [textField resignFirstResponder];
    return YES;
}


-(void) textFieldDidBeginEditing:(UITextField *)textField
{
    if(textField == self.textField3){
        // Close the keyboard.

        [self.textField3 resignFirstResponder];

        [self.view endEditing:YES];

        ActionSheetDatePicker *picker;

        NSString *fechaIni = [self.dates objectAtIndex:0];
        NSString *fechaFin = [self.dates objectAtIndex:[self.dates count]-1];

        NSDate *fechaMarcada;

        if(self.fecha == nil){
            fechaMarcada = [self fromDateString:fechaIni format:@"yyyyMMdd"];
        }else{
            fechaMarcada = self.fecha;
        }

        picker = [[ActionSheetDatePicker alloc] initWithTitle:@"Seleccione" datePickerMode:UIDatePickerModeDate selectedDate:fechaMarcada target:self action:@selector(datePickerValueChanged:) origin:textField cancelAction:nil];

        [picker setMinimumDate:[self fromDateString:fechaIni format:@"yyyyMMdd"]];
        [picker setMaximumDate:[self fromDateString:fechaFin format:@"yyyyMMdd"]];

        [picker setDoneButton:[[UIBarButtonItem alloc] initWithTitle:@"Ok" style:UIBarButtonItemStylePlain target:nil action:nil]];
        [picker setCancelButton:[[UIBarButtonItem alloc] initWithTitle:@"Cancelar" style:UIBarButtonItemStylePlain target:nil action:nil]];
        [picker showActionSheetPicker];

        self.textField3.inputView = picker.pickerView;
        self.textField3.text = [Utils formatDate:[self formatDate:fechaMarcada]];

        [Utils animateScreenUpByHalfKeyboardHeight:self.view];

    }else if(textField == self.textField1){
        if([self.currency.code isEqualToString:@"USD"]){
            textField.keyboardType = UIKeyboardTypeDecimalPad;
        }else{
            textField.keyboardType = UIKeyboardTypeNumberPad;
        }
    }
}

在 textField3 中显示 pickerView 之前，如何在所有情况下关闭键盘？

根据 rmp 建议编辑

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view from its nib.
    [Utils navigationBarTitleAndSubtitle:self title:@"Title" subtitle:@"Subtitle"];

    NSString *fechaIni = [self.dates objectAtIndex:0];
    NSString *fechaFin = [self.dates objectAtIndex:[self.dates count]-1];

    NSDate *fechaMarcada;

    if(self.fecha == nil){
       fechaMarcada = [self fromDateString:fechaIni format:@"yyyyMMdd"];
    }else{
       fechaMarcada = self.fecha;
    }

   self.picker = [[ActionSheetDatePicker alloc] initWithTitle:@"Seleccione" datePickerMode:UIDatePickerModeDate selectedDate:fechaMarcada target:self action:@selector(datePickerValueChanged:) origin:self.textField3 cancelAction:nil];

   [self.picker setMinimumDate:[self fromDateString:fechaIni format:@"yyyyMMdd"]];
   [self.picker setMaximumDate:[self fromDateString:fechaFin format:@"yyyyMMdd"]];

   [self.picker setDoneButton:[[UIBarButtonItem alloc] initWithTitle:@"Ok" style:UIBarButtonItemStylePlain target:nil action:nil]];
   [self.picker setCancelButton:[[UIBarButtonItem alloc] initWithTitle:@"Cancelar" style:UIBarButtonItemStylePlain target:nil action:nil]];
   //[self.picker showActionSheetPicker];

   self.textField3.inputView = self.picker.pickerView;
   self.textField3.text = [Utils formatDate:[self formatDate:fechaMarcada]];
}

-(void) textFieldDidBeginEditing:(UITextField *)textField
{
    if(textField == self.textField3){
        // Close the keyboard.
        // [self.view endEditing:YES];

        [Utils animateScreenUpByHalfKeyboardHeight:self.view];

    }else if(textField == self.textField1){
        if([self.currency.code isEqualToString:@"USD"]){
            textField.keyboardType = UIKeyboardTypeDecimalPad;
        }else{
            textField.keyboardType = UIKeyboardTypeNumberPad;
        }
    }
}

Answer 1

您需要将ActionSheetDatePicker 初始化代码移动到viewWillAppear 或viewDidLoad，以便在用户对文本字段进行操作之前对其进行初始化。你需要这个，所以textField3.inputView 在用户输入字段之前已经被分配了。现在您可以删除代码行[self.textField3 resignFirstResponder];，因为您的文本字段不会显示键盘，因为它的inputView 已经分配给ActionSheetDatePicker

Answer 2

像这样添加手势识别器。确保将此 UIGestureRecognizerDelegate 添加到您的班级顶部。

override func viewDidLoad() {
    let tap1 = UITapGestureRecognizer(target: self, action: "dismissKeyboard")
    self. UITextField1!.addGestureRecognizer(tap1)
    tap1.delegate = self
}

func gestureRecognizer(gestureRecognizer: UIGestureRecognizer, shouldRecognizeSimultaneouslyWithGestureRecognizer otherGestureRecognizer: UIGestureRecognizer) -> Bool {
    return true
}

func dismissKeyboard() {
    self.view.endEditing(true)
}

Answer 3

这可能与这里的代码sn-p有关

self.textField3.inputView = picker.pickerView;
        self.textField3.text = [Utils formatDate:[self formatDate:fechaMarcada]];

        [Utils animateScreenUpByHalfKeyboardHeight:self.view];

在这种情况下我认为你应该删除

[Utils animateScreenUpByHalfKeyboardHeight:self.view];

手势识别的答案可能是正确的

Answer 4

您不需要每次在演出前都配置选择器。 将此代码移至 viewDid load 或 viewWillAppear

- (void) viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];

    picker = [[ActionSheetDatePicker alloc] initWithTitle:@"Seleccione" datePickerMode:UIDatePickerModeDate selectedDate:fechaMarcada target:self action:@selector(datePickerValueChanged:) origin:textField cancelAction:nil];

        [picker setMinimumDate:[self fromDateString:fechaIni format:@"yyyyMMdd"]];
        [picker setMaximumDate:[self fromDateString:fechaFin format:@"yyyyMMdd"]];

        [picker setDoneButton:[[UIBarButtonItem alloc] initWithTitle:@"Ok" style:UIBarButtonItemStylePlain target:nil action:nil]];
        [picker setCancelButton:[[UIBarButtonItem alloc] initWithTitle:@"Cancelar" style:UIBarButtonItemStylePlain target:nil action:nil]];
        [picker showActionSheetPicker];

        self.textField3.inputView = picker.pickerView;
}