ios - UITextField 没有保持自动资本化

Question

我在 UITextField 中的字符自动大写时遇到了一些问题。它在默认的 UIKeyboard 上工作得很好，但是如果我尝试使用 UIKeyboardTypeNamePhonePad，那么自动大写 dosnt 工作。

这是我的代码，

- (void)viewDidLoad {
//..

    //get keyboard and textfield ready
    codeTextField = [[UITextField alloc] initWithFrame:CGRectMake(20.0, 15.0, 300.0, 45.0)];

    codeTextField.delegate = self;

    UIFont *textFieldFont = [UIFont fontWithName:@"Helvetica" size:20.0];
    [codeTextField setFont:textFieldFont];
    codeTextField.textColor = [UIColor blackColor];

    [codeTextField setKeyboardType:UIKeyboardTypeNamePhonePad];
    [codeTextField setAutocapitalizationType:UITextAutocapitalizationTypeAllCharacters];
    [codeTextField setAutocorrectionType:UITextAutocorrectionTypeNo];

//..

Answer 1

如果您查看自动大写属性的 UITextInputTraits 协议(protocol)引用，它指出:

Some keyboard types do not support auto-capitalization. Specifically, this option is ignored if the value in the keyboardType property is set to UIKeyboardTypeNumberPad, UIKeyboardTypePhonePad, or UIKeyboardTypeNamePhonePad.