iPad开发--QQ空间布局,登录模块

一.登录模块

• 登录逻辑

   - (IBAction)loginClick:(UIButton *)sender {
  
       self.view.userInteractionEnabled = NO;
  
       [self.view endEditing:YES];
  
       [self.activeView startAnimating];
  
       if (self.accountField.text.length ==  || self.pwdField.text.length == ) {
  
           [self showError:@"帐号和密码不能为空"];
       }
       if ([self.accountField.text isEqualToString:@""] && [self.pwdField.text isEqualToString:@""]) {
  
           // 帐号密码正确 跳转控制器
           ChaosMainViewController *mainVC = [[ChaosMainViewController alloc] init];
           mainVC.view.backgroundColor = [UIColor colorWithRed: / 255.0 green: / 255.0 blue: / 255.0 alpha:1.0];
           [self presentViewController:mainVC animated:YES completion:nil];
  
       } else {
  
           [self showError:@"帐号或密码错误"];
       }
  
   }

• 登录不成功后的动画效果

   - (void)showError:(NSString *)error
   {
       dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1.0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
  
           UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"登录错误" message:error preferredStyle:UIAlertControllerStyleAlert];
           [alert addAction:[UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
  
           }]];
  
           [self presentViewController:alert animated:YES completion:nil];
  
           CAKeyframeAnimation *shakeAnim = [CAKeyframeAnimation animationWithKeyPath:@"transform.translation.x"];
           shakeAnim.values = @[@-,@,@,@];
           shakeAnim.repeatCount = ;
           shakeAnim.repeatDuration = 0.3;
           // 动画
           [self.animView.layer addAnimation:shakeAnim forKey:nil];
  
           [self.activeView stopAnimating];
  
           self.view.userInteractionEnabled = YES;
       });
  
   }

• 记住密码和自动登录逻辑