iOS 如何实现验证码登录丨 MobTech

#import "ViewController.h"#import <SMS_SDK/SMSSDK.h>
@interface ViewController ()<UITextFieldDelegate>{    NSInteger _count;}@property (nonatomic,strong)UITextField *phNumTF;@property (nonatomic,strong)UITextField *codeTF;@property (nonatomic,strong)UIButton *getCodeButton;@property (nonatomic,strong)UIButton *loginButton;@property (nonatomic,strong)NSTimer *timer;
@end
@implementation ViewController
- (void)viewDidLoad {    [super viewDidLoad];
    UILabel *titleLabel = [[UILabel alloc]init];    titleLabel.frame =  CGRectMake((self.view.frame.size.width-100)/2, 100, 100, 30);    titleLabel.text = @"登录";    titleLabel.textAlignment =  NSTextAlignmentCenter;    titleLabel.font = [UIFont systemFontOfSize:16];    titleLabel.textColor = [UIColor blackColor];    [self.view addSubview:titleLabel];
    UILabel *phNumLabel = [[UILabel alloc]init];    phNumLabel.frame =  CGRectMake(50, titleLabel.frame.origin.y+200, 70, 30);    phNumLabel.text = @"手机号码";    phNumLabel.font = [UIFont systemFontOfSize:16];    phNumLabel.textColor = [UIColor blackColor];    [self.view addSubview:phNumLabel];
    self.phNumTF = [[UITextField alloc]initWithFrame:CGRectMake(130, phNumLabel.center.y-25, self.view.frame.size.width - 150, 50)];    self.phNumTF.placeholder = @"请输入手机号码";    self.phNumTF.textColor = [UIColor blackColor];    self.phNumTF.font = [UIFont systemFontOfSize:18];    [self.view addSubview:self.phNumTF];
    UILabel *codeLabel = [[UILabel alloc]init];    codeLabel.frame =  CGRectMake(50, phNumLabel.frame.origin.y+50, 50, 30);    codeLabel.text = @"验证码";    codeLabel.font = [UIFont systemFontOfSize:16];    codeLabel.textColor = [UIColor blackColor];    [self.view addSubview:codeLabel];
    self.codeTF = [[UITextField alloc]initWithFrame:CGRectMake(self.phNumTF.frame.origin.x, codeLabel.center.y-25, self.view.frame.size.width - 220, 50)];    self.codeTF.placeholder = @"请输入的短信验证码";    self.codeTF.textColor = [UIColor blackColor];    self.codeTF.font = [UIFont systemFontOfSize:18];    [self.view addSubview:self.codeTF];
    self.getCodeButton = [UIButton buttonWithType:UIButtonTypeCustom];    self.getCodeButton.frame = CGRectMake(self.codeTF.frame.origin.y-30, self.codeTF.center.y - 15, 70, 30);    [self.getCodeButton setTitle:@"获取验证码" forState:UIControlStateNormal];    [self.getCodeButton setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];    self.getCodeButton.titleLabel.font = [UIFont systemFontOfSize:13];    [self.getCodeButton addTarget:self action:@selector(getCodeButtonClick) forControlEvents:UIControlEventTouchUpInside];    [self.view addSubview:self.getCodeButton];
    self.loginButton = [UIButton buttonWithType:UIButtonTypeCustom];    self.loginButton.frame = CGRectMake(80, self.codeTF.frame.origin.y+200, self.view.frame.size.width - 160, 50);    self.loginButton.backgroundColor = [UIColor blueColor];    [self.loginButton setTitle:@"登录" forState:UIControlStateNormal];    self.loginButton.titleLabel.font = [UIFont systemFontOfSize:18];    [self.loginButton addTarget:self action:@selector(loginButtonClick) forControlEvents:UIControlEventTouchUpInside];    [self.view addSubview:self.loginButton];


}
//获取短信验证码- (void)getCodeButtonClick{    self.getCodeButton.enabled =NO;    _count = 120;    [self.getCodeButton setTitle:@"120s后重新发送" forState:UIControlStateNormal];    self.timer = [NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(timerFired:) userInfo:nil repeats:YES];}
//定时器-(void)timerFired:(NSTimer *)timer{    if (_count !=1) {        _count -=1;        [self.getCodeButton setTitle:[NSString stringWithFormat:@"%lds后重新发送",_count] forState:UIControlStateNormal];        //获取短信验证码        [SMSSDK getVerificationCodeByMethod:SMSGetCodeMethodSMS phoneNumber:self.phNumTF.text zone:@"86" template:@"" result:^(NSError *error) {                if (!error)                {                    // 请求成功                }                else                {                    // error                }            }];    } else {        [timer invalidate];        self.getCodeButton.enabled = YES;        [self.getCodeButton setTitle:@"重新发送" forState:UIControlStateNormal];
    }}
//登录- (void)loginButtonClick{    //提交短信验证码    [SMSSDK commitVerificationCode:self.codeTF.text phoneNumber:self.phNumTF.text zone:@"86"result:^(NSError *error) {            if (!error)            {                // 验证成功            }            else            {                // error            }        }];}@end