第一、点击textfield上移视图（键盘上部按钮或者标签）
** 一.通知中心**
1.初始化通知中心,设置控制器为监听器
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(KeyboardWillChangeFrame:) name:UIKeyboardWillChangeFrameNotification object:nil];
2.监听器消失时,移除通知中心
- (void)dealloc{
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
3.实现监听器的方法
- (void)KeyboardWillChangeFrame:(NSNotification *)note{
NSLog(@"%@",note.userInfo);
CGRect keyboard = [note.userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue];
CGFloat trans = keyboard.origin.y - HEIGHT;
self.view.transform = CGAffineTransformMakeTranslation(0, trans);
}
4.拖动或点击textfield上部视图时,键盘消失
- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView{
[self.view endEditing:YES];
}
或者是
- (void)touchesBegan:(NSSet<UITouch> *)touches withEvent:(UIEvent *)event{
[self.view endEditing:YES];
}
** 二.textfield的代理方法**
-(BOOL)textViewShouldBeginEditing:(UITextView *)textView
{
CGRect frame = textView.frame;
int offset = frame.origin.y + 80 - (HEIGHT - 216.0);//iPhone键盘高度216，iPad的为352
[UIView animateWithDuration:0.5 animations:^{
//将视图的Y坐标向上移动offset个单位，以使下面腾出地方用于软键盘的显示
if(offset > 0)
self.view.frame = CGRectMake(0, -offset, WIDTH, HEIGHT);
[self.navigationController setNavigationBarHidden:NO animated:YES];
}];
return YES;
}
-(BOOL)textViewShouldEndEditing:(UITextView *)textView
{
[UIView animateWithDuration:0.2 animations:^{
self.view.frame = CGRectMake(0, 0, WIDTH, HEIGHT);
}];
return YES;
}
**三、工具栏 **
//创建工具条
UIToolbar *toolbar=[[UIToolbar alloc]init];
//设置工具条的颜色
toolbar.barTintColor=[UIColor brownColor];
//设置工具条的frame
toolbar.frame=CGRectMake(0, 0, 320, 44);
//给工具条添加按钮
UIBarButtonItem *item0=[[UIBarButtonItem alloc]initWithTitle:@"上一个" style:UIBarButtonItemStylePlain target:self action:@selector(click) ];
UIBarButtonItem *item1=[[UIBarButtonItem alloc]initWithTitle:@"下一个" style:UIBarButtonItemStylePlain target:self action:@selector(click)];
UIBarButtonItem *item2=[[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
UIBarButtonItem *item3=[[UIBarButtonItem alloc]initWithTitle:@"完成" style:UIBarButtonItemStylePlain target:self action:@selector(click)];
toolbar.items = @[item0, item1, item2, item3];
//设置文本输入框键盘的辅助视图
self.textfield.inputAccessoryView=toolbar;
** 四.第三方库 IQKeyboardManager**
第二、监听输入框删除键
1.新建类文件，集成系统 UItextField
2.添加删除键代理 A
3.重写 deleteBackward 方法
4.在需要用的类文件中，添加代理，实现 删除键代理A
举例：
1、MSUTextField.h 文件：
#import <UIKit>
@protocol MSUTextFieldDelegate <NSObject>
- (void)deleteBtnClick:(UITextField *)textField;
@end
@interface MSUTextField : UITextField
@property (nonatomic , weak) id<MSUTextFieldDelegate> delegate;
@end
2、MSUTextField.m 文件：重写 deleteBackward 方法
#import "MSUTextField.h"
@implementation MSUTextField
- (void)deleteBackward{
[super deleteBackward];
if (self.delegate && [self.delegate respondsToSelector:@selector(deleteBtnClick:)]) {
[self.delegate deleteBtnClick:self];
}
}
@end
3、要用的类文件 ：MSUAgainSetPWDController.m 中
1）遵循代理协议 <MSUTextFieldDelegate>
2) 实现代理方法 deleteBtnClick
- (void)deleteBtnClick:(UITextField *)textField{
if (textField.text.length > 0 || textField.text.length == 0) {
UILabel *label = self.btnArr[textField.text.length];
label.text = @"";
self.pwd2Str = textField.text;
}
}
第三、更改输入框占位符字体大小、颜色等
self.shopTF = [[UITextField alloc] init];
_shopTF.attributedPlaceholder = [[NSAttributedString alloc] initWithString:@"商品名称" attributes:@{NSForegroundColorAttributeName: HEXCOLOR(0x757575)}];
_shopTF.frame = CGRectMake(14, 0, WIDTH-28, 40);
_shopTF.font = [UIFont systemFontOfSize:14];
_shopTF.textColor = HEXCOLOR(0x333333);
// _shopTF = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 5, 30)];
// _shopTF = UITextFieldViewModeAlways;
[topView addSubview:_shopTF];
第四、手机号码以及密码输入及相关限制（注： 如果想要单独某个控制器调用系统键盘，设置 textField的secureTextEntry = NO;）
- (NSString *)md5:(NSString *)str
{
const char *cStr = [str UTF8String];
unsigned char result[16];
CC_MD5(cStr, strlen(cStr), result); // This is the md5 call
return [NSString stringWithFormat:
@"xxxxxxxxxxxxxxxx",
result[0], result[1], result[2], result[3],
result[4], result[5], result[6], result[7],
result[8], result[9], result[10], result[11],
result[12], result[13], result[14], result[15]
];
}
- (void)textFieldDidEndEditing:(UITextField *)textField{
if ([textField.text isEqualToString:_phoneTF.text]) {
[self checkTel:_phoneTF.text];
}else if ([textField.text isEqualToString:_passwordTF.text]){
[self checkPassWord:_passwordTF.text];
}
}
- (BOOL)checkTel:(NSString *)str{
if ([str length] == 0) {
UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"友情提示" message:@"手机号码不能为空" preferredStyle:UIAlertControllerStyleAlert];
[alert addAction:[UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:nil]];
[self presentViewController:alert animated:YES completion:nil];
return NO;
}
//正则表达式
NSString *regex = @"^1(3[0-9]|4[57]|5[0-35-9]|8[0-9]|7[0678])\\d{8}$";
NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex];
BOOL isMatch = [pred evaluateWithObject:str];
if (!isMatch) {
UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"提示" message:@"请输入正确的手机号码" preferredStyle:UIAlertControllerStyleAlert];
[alert addAction:[UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:nil]];
[self presentViewController:alert animated:YES completion:nil];
return NO;
}
return YES;
}
- (BOOL)checkPassWord:(NSString *)str{
if (_passwordTF.text.length < 6> 16) {
UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"温馨提示" message:@"密码应为6-16位，区分大小写" preferredStyle:UIAlertControllerStyleAlert];
[alert addAction:[UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:nil]];
[self presentViewController:alert animated:YES completion:nil];
return NO;
}
//***需要过滤的特殊字符：~￥#&*<>《》()[]{}【】^@/￡¤￥|§¨「」『』￠￢￣~@#￥&*（）——+|《》$_€。
NSRange urgentRange = [str rangeOfCharacterFromSet:[NSCharacterSet characterSetWithCharactersInString:@"~￥#&*<>《》()[]{}【】^@/￡¤￥|§¨「」『』￠￢￣~@#￥&*（）——+|《》$_€"]];
if (urgentRange.location == NSNotFound) {
return NO;
}
UIAlertController *alert = [UIAlertController alertControllerWithTitle:NSLocalizedString(@"温馨提示", nil) message:NSLocalizedString(@"您的密码中应不包含特殊字符", nil) preferredStyle:UIAlertControllerStyleAlert];
[alert addAction:[UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:nil]];
[self presentViewController:alert animated:YES completion:nil];
return YES;
- (void) touchesBegan:(NSSet<UITouch> *)touches withEvent:(UIEvent *)event{
[self.view endEditing:YES];
}
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