Question

我对IOS很新。在另一个人的帮助下，设法从第三方API“获取”数据并显示在我的表视图中，但现在我想从UIText字段中编写一些字符串，根据API文档进行格式化并写入服务器。我使用块的现有代码。任何人都可以提供一个非常简单的例子吗？

以下是在黑暗中粗暴地分解所需的东西：

Class 1 - VC class：

//User input from UIText field

我假设我需要将字符串写入NSDictionary-对象和密钥对，并使用块？

调用位于Class 2的方法，该方法将从Class 1中的块请求数据？

第2类 - 模型类：

//Format the data as per the API dictates
//'PUT' the string to the server

这是我到目前为止所做的：

URLOUTViewController.h类

    //
//  URLOUTViewController.h
//  URLOUT
//
//  Created by Gregory Arden on 21/11/2013.
//  Copyright (c) 2013 Not Defined. All rights reserved.
//

#import <UIKit/UIKit.h>
#import "URLOUT_Model.h"


@interface URLOUTViewController : UIViewController

@property (strong, nonatomic) IBOutlet UITextField *firstName;
@property (strong, nonatomic) IBOutlet UITextField *secondName;

- (IBAction)submitButton:(id)sender;

@end

URLOUTViewController.m

//
//  URLOUTViewController.m
//  URLOUT
//
//  Created by Gregory Arden on 21/11/2013.
//  Copyright (c) 2013 Not Defined. All rights reserved.
//

#import "URLOUTViewController.h"
#import "URLOUT_Model.h"


@interface URLOUTViewController ()

//Private properties
@property (strong, nonatomic) URLOUT_Model *modelNewDroplet;
@property (strong, nonatomic) NSDictionary *userInput;

@end

@implementation URLOUTViewController

@synthesize userInput;
@synthesize firstName;
@synthesize secondName;

- (URLOUT_Model *) modelNewDroplet
{
    if (!_modelNewDroplet) _modelNewDroplet = [[URLOUT_Model alloc]init];
    return _modelNewDroplet;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    [URLOUT_Model createDropletWithCompletion:^(NSDictionary *userInput) {
        self.modelNewDroplet = userInput;
    }];

    // Do any additional setup after loading the view, typically from a nib.
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (IBAction)submitButton:(id)sender {

    NSDictionary *dic = [[NSDictionary alloc] initWithObjectsAndKeys:
                         self.firstName.text, @"firstName", self.secondName.text, @"secondname",nil];

    NSLog(@"%@", [dic objectForKey:@"firstName, secondName"]);
}

@end

URLOUT_Model.h

//
//  URLOUT_Model.h
//  URLOUT
//
//  Created by Gregory Arden on 21/11/2013.
//  Copyright (c) 2013 Not Defined. All rights reserved.
//

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

typedef void (^NSDictionayBlock)(NSDictionary * params);

@interface URLOUT_Model : NSObject

+ (void)createDropletWithCompletion:(NSDictionary *) params;

@end

URLOUT_Model.m

//
//  URLOUT_Model.m
//  URLOUT
//
//  Created by Gregory Arden on 21/11/2013.
//  Copyright (c) 2013 Not Defined. All rights reserved.
//

#import "URLOUT_Model.h"

@implementation URLOUT_Model

+ (void)createDropletWithCompletion:(NSDictionary *) params;
{
    NSMutableURLRequest *urlRequest = [NSMutableURLRequest requestWithURL:@{params: firstName, secondName, nil}];

    [urlRequest setHTTPMethod:@"PUT"];
    [urlRequest setCachePolicy:NSURLCacheStorageNotAllowed];
    [urlRequest setTimeoutInterval:30.0f];
    [urlRequest addValue:@"application/json" forHTTPHeaderField:@"Content-Type"];

    [NSURLConnection sendAsynchronousRequest:urlRequest
                                       queue:[NSOperationQueue mainQueue]
                           completionHandler:^(NSURLResponse *response, NSData *responseData, NSError *error){

                               NSError *serializationError = nil;
                               NSDictionary *json = [NSJSONSerialization JSONObjectWithData:responseData
                                                                                    options:NSJSONReadingAllowFragments
                                                                                      error:&serializationError];
                           }];
}

@end

Answer 1

创建HTTP PUT请求很简单：

创建NSMutableURLRequest。
使用@"PUT"方法将HTTP方法设置为-setHTTPMethod:。
使用适当的方法（-setValue:forHTTPHeaderField:，-setHTTPBody:等设置标题字段和正文。）
使用NSURLConnection。

您在请求中发送的数据来自（文本字段，数据文件，随机数生成器......），这对请求的创建没有任何影响。但是，您确实不应该在视图中存储数据。一般来说，文本视图等应在视图控制器发生更改时触发操作，视图控制器应更新数据模型。如果要将数据发送到某个服务器，请从模型中提取数据，而不是从UI组件中提取数据。

IOS如何从UIText'PUT'文本，并使用块

1 个答案: