iOS开发一个用户登陆注册模块须要解决的坑

  最近和另一位同事负责公司登陆和用户中心模块的开发工做,开发周期计划两周,减去和产品和接口的协调时间,再减去因为原型图和接口的问题,致使强迫症纠结症状高发,情绪不稳定耗费的时间,能在两周基本完成也算是个不小的奇迹了。本文就总结一下如何知足产品须要的状况下,高效开发一个登陆注册模块。服务器

1.利用继承解决界面重复性功能。一般登陆注册会有一个独立的设计,而模块内部会有有类似的背景,类似的导航栏样式,类似返回和退出行为,类似的输入框,按钮样式等。async

      

  好比上面的的注册和登陆模块,就有相同的返回按钮,相同的背景,相同的导航栏样式,甚至相同的按钮和输入框样式。因此为了加快咱们的开发,咱们彻底先定义一个父控制器,而后经过的继承实现多态,从而实现咱们快速设计页面和基本功能的实现。下图是个人我的项目《丁丁印记》的登陆注册模块的目录结构,其中HooEntryBaseViewController就定义了这个模块通用的行为和样式:动画

 

 

2.弹出键盘和退出键盘机制开发。ui

这点使咱们开发者容易忽略的一点,我也由于看到一些APP由于弹出键盘遮挡输入,致使怒删APP的行为。这模块的设计就根据产品的设计来决定采用什么代码实现咱们的目的了。atom

  • 单击空白区域退出键盘代码:
    UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(closeKeyboard:)];
    tap.numberOfTapsRequired = 1;
    tap.numberOfTouchesRequired = 1;
    [self.view addGestureRecognizer:tap];
- (void)closeKeyboard:(id)sender
{
    [self.view endEditing:YES];
}
  • 避免键盘遮挡,登陆表单或按钮上移代码:
- (void)textViewDidBeginEditing:(UITextField *)textView
{
    CGRect frame = textView.frame;
    int offset = frame.origin.y + 120 - (self.view.frame.size.height - 216.0);//键盘高度216
    NSTimeInterval animationDuration = 0.30f;
    [UIView beginAnimations:@"ResizeForKeyBoard" context:nil];
    [UIView setAnimationDuration:animationDuration];
    float width = self.view.frame.size.width;
    float height = self.view.frame.size.height;
    if(offset > 0)
    {
        CGRect rect = CGRectMake(0.0f, -offset,width,height);
        self.view.frame = rect;
    }
    [UIView commitAnimations];
}

3.接入第三方登陆,必需要判断用户是否安装该第三方客户端,不然苹果可能审核没法经过。血的教训。spa

  好比个人APP《丁丁印记》接入了QQ登陆功能,程序会客户端是否安装了QQ,若是未安装则隐藏QQ登陆图标。设计

    if (![QQApi isQQInstalled]) {
        self.QQLoginButton.hidden = YES;
        self.QQLoginLabel.hidden = YES;
    }

4.特殊情景处理。这容易是一个空白点,一般年轻的开发的者不会考虑到这一块,而一般产品和UE也不太会记得定义清楚临界点的行为。3d

  •   加载状态。当用户发起登陆或者注册请求时须要给用户友好的提示。
#pragma mark - 登陆按钮点击
- (IBAction)login:(UIButton *)sender {
    if([self.userNameTextField.text isEmpty] || [self.passwordTextField.text isEmpty]){
        [SVProgressHUD showErrorWithStatus:@"用户名或密码不能为空"];
    }else{
        __weak typeof(self) weakSelf = self;
        [[HooUserManager manager] LoginWithUserName:self.userNameTextField.text andPassword:self.passwordTextField.text block:^(BmobUser *user, NSError *error) {
            __strong __typeof(weakSelf)strongSelf = weakSelf;
            if (error) {
                [SVProgressHUD showErrorWithStatus:@"登陆失败"];
            }else if(user){
                [SVProgressHUD showSuccessWithStatus:@"登陆成功"];
                
                [strongSelf loginSuccessDismiss];
            }
        }];
    }
}  

  

  •   帐号或者密码各类错误判断
        NSString *emailStr;
        NSString *phoneStr;
        NSString *passwordStr = weakSelf.passwordView.inputTextField.text;
            emailStr = weakSelf.accountView.inputTextField.text;
            if (![NSString validateEmail:emailStr] || !emailStr.length) {
                [weakSelf showErrorTipViewWithMessage:@"邮箱格式错误"];
                return;
            }
        } else {
            phoneStr = weakSelf.accountView.inputTextField.text;
            if (phoneStr.length < 5) {
                [weakSelf showErrorTipViewWithMessage:@"手机长度错误")];
                return;
            }
            if ([weakSelf.accountView.countryCode isEqualToString:@"+86"]) {
                if (![phoneStr isValidateMobileNumber]) {
                    [weakSelf showErrorTipViewWithMessage:@"手机号码格式错误")];
                    return;
                }
            }
        }
        
        if (passwordStr.length < kPasswordMinLength) {
            [weakSelf showErrorTipViewWithMessage:ATLocalizedString(@"密码长度超过少于6个字符")];
            return;
        }
        if (passwordStr.length > kPasswordMaxLength) {
            [weakSelf showErrorTipViewWithMessage:@"密码长度超过20个字符")];
            return;
        }

5.手机找回密码,发送验证码按钮的处理。这个行为也容易被产品忽略须要咱们开发者主动想到,而后跟产品肯定这个需求,而后肯定按钮的触发后的行为,不然用户可能屡次点击发送验证码,这会形成服务器负担,而且可能返回给用户多条短信,形成困扰。下面这段代码能够实现单击验证码按钮,而后倒计时2分钟后恢复按钮的可点击状态。code

- (void)verifedCodeButtonWithTitle:(NSString *)title andNewTitle:(NSString *)newTitle {
    WS(weakSelf);
    __block int timeout = kTimeout;
    dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
    dispatch_source_t _timer = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0,queue);
    dispatch_source_set_timer(_timer,dispatch_walltime(NULL, 0),1.0*NSEC_PER_SEC, 0);
    dispatch_source_set_event_handler(_timer, ^{
        if(timeout<=0){
            dispatch_source_cancel(_timer);
            dispatch_async(dispatch_get_main_queue(), ^{
                [weakSelf setTitle:title forState:UIControlStateNormal];
                weakSelf.userInteractionEnabled = YES;
            });
        }else{
            int seconds = timeout;
            NSString *strTime = [NSString stringWithFormat:@"%.2d", seconds];
            dispatch_async(dispatch_get_main_queue(), ^{
                [UIView beginAnimations:nil context:nil];
                [UIView setAnimationDuration:1];
                [weakSelf setTitle:[NSString stringWithFormat:@"%@(%@)",newTitle,strTime] forState:UIControlStateNormal];
                [UIView commitAnimations];
                weakSelf.userInteractionEnabled = NO;
            });
            timeout--;
        }
    });
    dispatch_resume(_timer);
}

5.用户登陆信息和状态持久化。咱们一般会有业务层处理登陆的数据的持久,而且使用单例,可是不能依赖单例记录用状态,由于用户可能会退出,因此须要从沙盒去读取用户状态的字段是否存在,如用户的ID,或者AccessToken。orm

  下面这段代码,用来持久化用户信息

- (void)saveUserInfoWithData:(NSDictionary *)dict {

        NSString *userID = dict[kUserId];
        NSString *email = dict[kEmail];
        NSString *mobile = dict[kMobile];
        [HooNSUserDefaultSerialzer setObject:memberID forKey:kUserID];
        [HooNSUserDefaultSerialzer setObject:email forKey:kEmail];
        [HooNSUserDefaultSerialzer setObject:mobile forKey:kMobile];


}

5.对外开发用户信息的接口。封装咱们的模块。对外提供咱们的接口,一般其余页面须要判断用户是否登陆,也可能须要用户的惟一标示符来请求数据。这一块若是咱们作的混乱,则容易致使其余页面获取用户信息的随意性,好比给他们开发了读取沙盒里读取用户信息的字段。咱们应该在登陆模块统一其余页面获取这些用户信息的行为。

#import <Foundation/Foundation.h>
#import "HooSingleton.h"

@interface HooUserManager : NSObject

@property (nonatomic, strong) NSString *userID;


SingletonH(Manager)

/**
 *  Verify user if login or not
 *
 *  @return   if login in return YES ,otherwise return NO
 */
- (BOOL)isUserLogin;

/**
 *  login out
 */
- (void)loginOut;

@end

 

#import "HooUserManager.h"
#import "HooNSUserDefaultSerialzer.h"

static NSString * const kMobile = @"Mobile";
static NSString * const kEmail = @"Email";
static NSString * const kUserID = @"UserID";

@implementation HooUserManager

SingletonM(Manager)

#pragma mark - getter and setter

- (NSString *)userID {
    NSString *userID = [HooNSUserDefaultSerialzer objectForKey:kUserID];
    return userID;
}

- (BOOL)isUserLogin {
    NSString *userID = [HooNSUserDefaultSerialzer objectForKey:kUserID];
    if (userID.length) {
        return YES;
    }
    return  NO;
}

- (void)loginOut {
    
    [HooNSUserDefaultSerialzer removeObjectForKey:kMobile];
    [HooNSUserDefaultSerialzer removeObjectForKey:kEmail];
    [HooNSUserDefaultSerialzer removeObjectForKey:kUseID];
}

@end

6.其余。

  其实为了更好的用户体验,咱们还会提供其余功能,如明文显示密码选择按钮、从服务器读取邮箱格式提示、错误字符纠正、固然还有最重要的动画效果。

  有点困了,脑子不太好使,就写这么多哈。

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