UIAlertController

• 创建弹框控制器
  

  UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"请输入团购信息" message:nil preferredStyle:UIAlertControllerStyleAlert];

• 添加按钮
  

  [alert addAction:[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:nil]];
  [alert addAction:[UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDestructive handler:nil]];

• 添加文本输入框
  

  [alert addTextFieldWithConfigurationHandler:^(UITextField *textField) {
        textField.placeholder = @"请输入团购名字";
    }];
  [alert addTextFieldWithConfigurationHandler:^(UITextField *textField) {
        textField.placeholder = @"请输入团购价格";
    }];

• 显示控制器
  

  [self presentViewController:alert animated:YES completion:nil];

最终效果