textfield输入监听.gif
定制navigationBar
self.navigationBar.tintColor = [GOVCommon colorForKey:@"mainBlueColor"];
self.navigationItem.title = @"实人认证";
[self.navigationBar setTitleTextAttributes:@{NSForegroundColorAttributeName:[GOVCommon colorForKey:@"enNavigationTitleColor"],NSFontAttributeName : FONT_SIZE_MENUCOLUMNTITLE_EN}];
self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithImage:[GOVCommon loadAppImage:@"backButton"]
- 添加监听
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(textFieldEditing:) name:UITextFieldTextDidChangeNotification object:nil];
- 实现方法,获取当前监听的textField
- (void)textFieldEditing:(NSNotification *)info{
UITextField *textField = (UITextField *)info.object;
// 字数限制
if (textField.tag == 10) {
if (textField.text.length > 15) {
textField.text = [textField.text substringToIndex:15];
}
self.fullNameStr = textField.text;
}else if (textField.tag == 12){
if (textField.text.length > 6) {
textField.text = [textField.text substringToIndex:6];
}
self.zipCodeStr = textField.text;
}else if (textField.tag == 13){
if (textField.text.length > 11) {
textField.text = [textField.text substringToIndex:11];
}
self.phoneNumberStr = textField.text;
}
[self saveButtonChangeColor];
}
// 键盘区分
- (void)textFieldDidBeginEditing:(UITextField *)textField{
if (textField.tag == 12 || textField.tag == 13) {
textField.keyboardType = UIKeyboardTypePhonePad;
}else{
textField.keyboardType = UIKeyboardTypeDefault;
}
}
// 必填项填后提交按钮可点
- (void)saveButtonChangeColor{
// 去除空格
NSCharacterSet *set = [NSCharacterSet whitespaceAndNewlineCharacterSet];
self.fullNameStr = [self.fullNameStr stringByTrimmingCharactersInSet:set];
self.addressStr = [self.addressStr stringByTrimmingCharactersInSet:set];
self.zipCodeStr = [self.zipCodeStr stringByTrimmingCharactersInSet:set];
self.phoneNumberStr = [self.phoneNumberStr stringByTrimmingCharactersInSet:set];
if (![self.fullNameStr isEqualToString:@""] && ![self.addressStr isEqualToString:@""] && ![self.addressStr isEqualToString:[CDCommon localizedString:@"addressPlaceHolder"]] && ![self.phoneNumberStr isEqualToString:@""]) {
self.saveButton.backgroundColor = [CDCommon colorForKey:@"DarkBlueThemeColor"];
self.saveButton.enabled = YES;
}else{
self.saveButton.enabled = NO;
self.saveButton.backgroundColor = [CDCommon colorForKey:@"feedbackSubmitColor"];
}
}
- remove监听
- (void)dealloc{
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
4.单个textField的输入监听也可以通过添加事件来实现
[self.textField addTarget:self action:@selector(textFieldDidChange:) forControlEvents:UIControlEventEditingChanged];
- (void)textFieldDidChange:(UITextField *)textField{
textField.text = [textField.text stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
if (textField.text.length > 5) {
textField.text = [textField.text substringToIndex:5];
}
}
键盘的各种样式
UIKeyboardTypeDefault, //默认键盘 Default type for the current input method.
UIKeyboardTypeASCIICapable, // Displays a keyboard which can enter ASCII characters
UIKeyboardTypeNumbersAndPunctuation, // Numbers and assorted punctuation.
UIKeyboardTypeURL, // A type optimized for URL entry (shows . / .com prominently).
UIKeyboardTypeNumberPad, // A number pad with locale-appropriate digits (0-9, ۰-۹, ०-९, etc.). Suitable for PIN entry.
UIKeyboardTypePhonePad, // A phone pad (1-9, *, 0, #, with letters under the numbers).
UIKeyboardTypeNamePhonePad, // A type optimized for entering a person's name or phone number.
UIKeyboardTypeEmailAddress, // A type optimized for multiple email address entry (shows space @ . prominently).
UIKeyboardTypeDecimalPad NS_ENUM_AVAILABLE_IOS(4_1), // A number pad with a decimal point.
UIKeyboardTypeTwitter NS_ENUM_AVAILABLE_IOS(5_0), // A type optimized for twitter text entry (easy access to @ #)
UIKeyboardTypeWebSearch NS_ENUM_AVAILABLE_IOS(7_0), // A default keyboard type with URL-oriented addition (shows space . prominently).
UIKeyboardTypeASCIICapableNumberPad NS_ENUM_AVAILABLE_IOS(10_0), // A number pad (0-9) that will always be ASCII digits.
