BaseTextField:空格开始输入
实现代码:
- (void)prepareTextFieldWithDefaultSetting
{
UIView *leftView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 10, 0)];
self.leftView = leftView;
self.leftViewMode = UITextFieldViewModeAlways;
}
MoneyTextField:限制输入的文本符合规则
实现代码:
//MARK: - UITextFieldDelegate
//MARK: --开始编辑时
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {
NSString *myDotNumbers = @"0123456789.\n";
NSString *myNumbers = @"0123456789\n";
// 判断是否输入内容，或者用户点击的是键盘的删除按钮
if (![string isEqualToString:@""]) {
NSCharacterSet *characterSet;
// 小数点在字符串中的位置 第一个数字从0位置开始
NSInteger dotLocation = [textField.text rangeOfString:@"."].location;
// 判断字符串中是否有小数点，并且小数点不在第一位
// NSNotFound 表示请求操作的某个内容或者item没有发现，或者不存在
// range.location 表示的是当前输入的内容在整个字符串中的位置，位置编号从0开始
if (dotLocation == NSNotFound && range.location != 0) {
// 取只包含“myDotNumbers”中包含的内容，其余内容都被去掉
/*
[NSCharacterSet characterSetWithCharactersInString:myDotNumbers]的作用是去掉"myDotNumbers"中包含的所有内容，只要字符串中有内容与"myDotNumbers"中的部分内容相同都会被舍去在上述方法的末尾加上invertedSet就会使作用颠倒，只取与“myDotNumbers”中内容相同的字符
*/
characterSet = [[NSCharacterSet characterSetWithCharactersInString:myDotNumbers] invertedSet];
if (range.location >= 9) {
NSLog(@"单笔金额不能超过亿位");
if ([string isEqualToString:@"."] && range.location == 9) {
return YES;
}
return NO;
}
}else {
characterSet = [[NSCharacterSet characterSetWithCharactersInString:myNumbers] invertedSet];
}
// 按characterSet分离出数组,数组按@""分离出字符串
NSString *filtered = [[string componentsSeparatedByCharactersInSet:characterSet] componentsJoinedByString:@""];
BOOL basicTest = [string isEqualToString:filtered];
if (!basicTest) {
NSLog(@"只能输入数字和小数点");
return NO;
}
if (dotLocation != NSNotFound && range.location > dotLocation + 2) {
NSLog(@"小数点后最多两位");
return NO;
}
if (textField.text.length > 11) {
return NO;
}
}
return YES;
}
PhoneTextField:自动匹配3-4-4手机格式,并提供检测输入的手机号码是否合法的接口
实现代码:
//MARK: -
//MARK: --输入框的文本改变时
- (void)actionEditingChanged:(PhoneTextField *)textField
{
//当前光标位置
NSInteger currentPosition = [textField offsetFromPosition:textField.beginningOfDocument toPosition:textField.selectedTextRange.start];
NSString *onlyNumberString = [self getOnlyNumberStringFromString:textField.text position:¤tPosition];
//限制字数
if (onlyNumberString.length > 11) {
textField.text = _lastText;
textField.selectedTextRange = _currentTextRange;
return;
}
NSString *phoneResultString = [self getPhoneResultFromSourceString:onlyNumberString position:¤tPosition];
textField.text = phoneResultString;
UITextPosition *targetPosition = [textField positionFromPosition:textField.beginningOfDocument offset:currentPosition];
UITextRange *range = [textField textRangeFromPosition:targetPosition toPosition:targetPosition];
textField.selectedTextRange = range;
}
/**
剔除非阿拉伯数字的函数
@param sourceString 需要校验的字符串
@param position 当前的光标位置
@return 处理后只包含阿拉伯数字的字符串
*/
- (NSString *)getOnlyNumberStringFromString:(NSString *)sourceString position:(NSInteger *)position
{
NSMutableString *mstr = [NSMutableString string];
NSInteger tempPosition = *position;
for (int i = 0 ; i < sourceString.length; i++) {
unichar character = [sourceString characterAtIndex:i];
//isdigit:检查参数c是否为阿拉伯数字0到9
if (isdigit(character)) {
//将unichar转为NSString
NSString *numberString = [NSString stringWithCharacters:&character length:1];
[mstr appendString:numberString];
}else{
//检测到非阿拉伯数字时,且遍历到的下标小于 当前光标位置,需要将当前光标的位置-1(计算纯阿拉伯数字的下标)
if (i < tempPosition) {
(*position)--;
}
}
}
return mstr.copy;
}
/**
指定位置添加分隔符号
@param soureceString 需要校验的字符串
@param position 当前的光标位置
@return 添加符号后的电话号码
*/
- (NSString *)getPhoneResultFromSourceString:(NSString *)soureceString position:(NSInteger *)position
{
NSMutableString *mstr = [NSMutableString string];
NSInteger tempPosition = *position;
for (int i = 0; i < soureceString.length; i++) {
if (i == 3 || i == 7) {
[mstr appendString:@"-"];
if (i < tempPosition) {
(*position)++;
}
}
unichar character = [soureceString characterAtIndex:i];
NSString *str = [NSString stringWithCharacters:&character length:1];
[mstr appendString:str];
}
return mstr.copy;
}
//MARK: - UITextFieldDelegate
//MARK: --输入框开始编辑时
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
_lastText = textField.text;
_currentTextRange = textField.selectedTextRange;
return YES;
}
//MARK: -
//MARK: --检测手机号码是否正确
- (BOOL)isCorrectPhoneNumber
{
[self resignFirstResponder];
//正则表达式(匹配手机号3-4-4格式)
NSString *pattren = @"^1[3578]+\\d-\\d{4}-\\d{4}";
//SELF MATCHES:匹配正则表达式
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",pattren];
//评估输入的手机号是否匹配
return [predicate evaluateWithObject:self.text];
}
调用方法:
- (IBAction)checkPhoneNumber:(id)sender {
if ([self.phoneTF isCorrectPhoneNumber]) {
NSLog(@"This is a correct phone number");
}else{
NSLog(@"This is a error phone number");
}
}
VecodeTextField:带计时器的验证码输入框
实现代码:
- (void)prepareTextFieldWithDefaultSetting
{
[super prepareTextFieldWithDefaultSetting];
self.keyboardType = UIKeyboardTypeNumberPad;
self.rightViewMode = UITextFieldViewModeAlways;
_button = [[UIButton alloc]initWithFrame:CGRectMake(0, 0, 100, 20)];
_button.backgroundColor = [UIColor whiteColor];
_button.titleLabel.font = [UIFont systemFontOfSize:12];
_button.contentHorizontalAlignment = UIControlContentHorizontalAlignmentRight;
[_button setTitle:@"获取验证码" forState:UIControlStateNormal];
[_button setTitleColor:[UIColor lightGrayColor] forState:UIControlStateNormal];
[_button addTarget:self action:@selector(clickButton:) forControlEvents:UIControlEventTouchUpInside];
self.rightView = _button;
}
//MARK: -
//MARK: -- 点击获取验证码按钮
- (void)clickButton:(UIButton *)sender
{
sender.enabled = NO;
_second = 60;
if ([_vecodeDelegate respondsToSelector:@selector(clickButtonWithTextField:startTimer:reenableButton:)]) {
[_vecodeDelegate clickButtonWithTextField:self startTimer:@selector(startTimer) reenableButton:@selector(reenableButton)];
}
}
- (void)startTimer
{
_timer = [NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(countdown) userInfo:nil repeats:YES];
}
- (void)reenableButton
{
[self resetTextField];
}
- (void)countdown
{
_second--;
[self.button setTitle:[NSString stringWithFormat:@"%d",_second] forState:UIControlStateNormal];
if (_second < 0) {
[self resetTextField];
}
}
- (void)resetTextField
{
[_button setTitle:@"重获验证码" forState:UIControlStateNormal];
[_timer invalidate];
_second = 60;
_button.enabled = YES;
}
调用代理方法:
//MARK: -
//MARK: --VecodeTFDelegate
- (void)clickButtonWithTextField:(VecodeTextField *)textField startTimer:(SEL)startTimer reenableButton:(SEL)reenableButton
{
//开始倒计时
if ([textField respondsToSelector:startTimer]) {
[textField performSelector:startTimer];
}
self.reenableButton = reenableButton;
}
//MARK: -
//MARK: --停止计时器
- (IBAction)stopTimer:(id)sender {
if ([self.vecodeTF respondsToSelector:self.reenableButton]) {
[self.vecodeTF performSelector:self.reenableButton];
}
}
