iOS 应用内付费（IAP）开发步骤

测试的话不需要有上线产品，随便创一个应用就行了不过需要配置一些信息

上面圈出的里面的内容要全部填完才能成功

1.点击“Request”，填写一下Legal Entity的基本信息，完成之后同意一个协议并提交

之后页面会变为

2.需要分别填写里面的内容，大致需要以下信息

姓名，邮箱，标题，电话号码，传真（可选）
CNAPS Code，这个号有的地方说是联行号，可以理解为每个银行支行的唯一ID吧，这个可以打电话问你银行卡开户行，就是他们那的一个唯一12位的标示号码，也可以通过苹果的Look up Transit Number去搜索。
银行账户号码帐户持有人姓名
银行账户的货币，人命币是CNY
个人或组织名字
注册地－中国

contact

bank

tax

3.填写完毕后，进入我的app

选择功能

点击添加

没有填写上面信息的话只有一个免费订阅

现在进去填写相关信息，保存就行了

4.创建沙盒测试员，进行模拟测试

填写相关信息，测试的时候就用你这个测试的电子邮件和密码就行了

5.代码方面

导入库文件

//
//  ViewController.m
//  ApplePayTest
//
//  Created by apple on 15/9/28.
//  Copyright (c) 2015年 tqh. All rights reserved.
//

#import "ViewController.h"
#import <StoreKit/StoreKit.h>

@interface ViewController ()<SKProductsRequestDelegate,SKPaymentTransactionObserver>

@end

@implementation ViewController

- (void)dealloc {
    [[SKPaymentQueue defaultQueue] removeTransactionObserver:self];
}

- (void)viewDidLoad {
    [super viewDidLoad];
    [[SKPaymentQueue defaultQueue] addTransactionObserver:self];
    NSLog(@"点击屏幕获取产品列表信息");
}

// 下面的ProductId应该是事先在itunesConnect中添加好的，已存在的付费项目。否则查询会失败。
- (void)getProductInfo {
    //这里填你的产品id，根据创建的名字
    //ProductIdofvip
    //ProductId
    NSSet * set = [NSSet setWithArray:@[@"ProductId"]];
    SKProductsRequest * request = [[SKProductsRequest alloc] initWithProductIdentifiers:set];
    request.delegate = self;
    [request start];
    NSLog(@"请求开始请等待...");
}

#pragma mark - 以上查询的回调函数－－－－－－－

// 以上查询的回调函数
- (void)productsRequest:(SKProductsRequest *)request didReceiveResponse:(SKProductsResponse *)response {
    //
    NSArray *myProduct = response.products;
    NSLog(@"%@",myProduct);
    if (myProduct.count == 0) {
        NSLog(@"无法获取产品信息，购买失败。");
        return;
    }
    SKPayment * payment = [SKPayment paymentWithProduct:myProduct[0]];
    [[SKPaymentQueue defaultQueue] addPayment:payment];
}

#pragma mark - 🚩🚩🚩🚩🚩🚩🚩🚩事件监听

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    //查询是否允许内付费
    if ([SKPaymentQueue canMakePayments]) {
        // 执行下面提到的第5步：
        [self getProductInfo];
    } else {
        NSLog(@"失败，用户禁止应用内付费购买.");
    }
}

#pragma mark - others SKPaymentTransactionObserver

- (void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions {
    for (SKPaymentTransaction *transaction in transactions)
    {
        switch (transaction.transactionState)
        {
            case SKPaymentTransactionStatePurchased://交易完成
                NSLog(@"transactionIdentifier = %@", transaction.transactionIdentifier);
                [self completeTransaction:transaction];
                break;
            case SKPaymentTransactionStateFailed://交易失败
                NSLog(@"交易失败");
                [self failedTransaction:transaction];
                break;
            case SKPaymentTransactionStateRestored://已经购买过该商品
                NSLog(@"已经购买过该产品");
                [self restoreTransaction:transaction];
                break;
            case SKPaymentTransactionStatePurchasing:      //商品添加进列表
                NSLog(@"商品添加进列表");
                break;
            default:
                break;
        }
    }
}
- (void)completeTransaction:(SKPaymentTransaction *)transaction {
    // Your application should implement these two methods.
    NSLog(@"---------进入了这里");
    NSString * productIdentifier = transaction.payment.productIdentifier;
    //transaction.transactionReceipt
//    NSString * receipt = [[NSString alloc]initWithData:transaction.transactionReceipt encoding:NSUTF8StringEncoding];

    //这里要用base64编码

    //
//    NSLog(@"%@",receipt);
    if ([productIdentifier length] > 0) {
        // 向自己的服务器验证购买凭证
    }
    // Remove the transaction from the payment queue.
    [[SKPaymentQueue defaultQueue] finishTransaction: transaction];

}
- (void)failedTransaction:(SKPaymentTransaction *)transaction {
    if(transaction.error.code != SKErrorPaymentCancelled) {
        NSLog(@"购买失败");
    } else {
        NSLog(@"用户取消交易");
    }
    [[SKPaymentQueue defaultQueue] finishTransaction: transaction];
}
- (void)restoreTransaction:(SKPaymentTransaction *)transaction {
    // 对于已购商品，处理恢复购买的逻辑
    [[SKPaymentQueue defaultQueue] finishTransaction: transaction];
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
}

@end

用起来不怎么方便，封装了下：

//
//  WJIAPManager.h
//  ApplePayTest
//
//  Created by apple on 15/10/8.
//  Copyright (c) 2015年 tqh. All rights reserved.
//

#import <Foundation/Foundation.h>

typedef void (^successfulBlock)();
typedef void (^failureBlock)();
typedef void (^cancelBlock)();
@interface WJIAPManager : NSObject

//初始化的时候用
//+ (instancetype)instance;

//调用的时候用
+ (void)startIapWithProductId:(NSString *)ProductId
                   successful:(successfulBlock)successful
                      failure:(failureBlock)failure
                       cancel:(cancelBlock)cancel ;

@end

//
//  WJIAPManager.m
//  ApplePayTest
//
//  Created by apple on 15/10/8.
//  Copyright (c) 2015年 tqh. All rights reserved.
//

#import "WJIAPManager.h"
#import <StoreKit/StoreKit.h>

static successfulBlock _successfulBlock;
static failureBlock _failureBlock;
static cancelBlock _cancelBlock;
__strong static WJIAPManager *_manager = nil;
@interface WJIAPManager ()<SKProductsRequestDelegate,SKPaymentTransactionObserver> {
    SKPaymentTransaction *_transaction;
}
@end

@implementation WJIAPManager

- (void)dealloc {
    [[SKPaymentQueue defaultQueue] removeTransactionObserver:self];
}

+ (instancetype)instance {
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        _manager = [[WJIAPManager alloc]init];
        [_manager initIap];
    });
    return _manager;
}

- (void)initIap {
      [[SKPaymentQueue defaultQueue] addTransactionObserver:self];
}

+ (void)startIapWithProductId:(NSString *)ProductId
                   successful:(successfulBlock)successful
                      failure:(failureBlock)failure
                       cancel:(cancelBlock)cancel {
    [WJIAPManager instance];
    _successfulBlock  = [successful copy];
    _failureBlock  = [failure copy];
    _cancelBlock  = [cancel copy];
    [_manager startIapWithProductId:ProductId];
}

- (void)startIapWithProductId:(NSString *)ProductId {
    //查询是否允许内付费
    if ([SKPaymentQueue canMakePayments]) {
        // 执行下面提到的第5步：
        [self getProductInfoWithProductId:(NSString *)ProductId];
    } else {
        NSLog(@"失败，用户禁止应用内付费购买.");
    }
}

+ (void)finish {
    [_manager finish];
}

- (void)finish {
    [[SKPaymentQueue defaultQueue] finishTransaction: _transaction];
}

// 下面的ProductId应该是事先在itunesConnect中添加好的，已存在的付费项目。否则查询会失败。
- (void)getProductInfoWithProductId:(NSString *)ProductId {
    //这里填你的产品id，根据创建的名字
    //ProductIdofvip
    //ProductId
    //com.mai.moaivip
    NSSet * set = [NSSet setWithArray:@[ProductId]];
    SKProductsRequest * request = [[SKProductsRequest alloc] initWithProductIdentifiers:set];
    request.delegate = self;
    [request start];
    NSLog(@"请求开始请等待...");
}

#pragma mark - 以上查询的回调函数－－－－－－－

// 以上查询的回调函数
- (void)productsRequest:(SKProductsRequest *)request didReceiveResponse:(SKProductsResponse *)response {
    //
    NSArray *myProduct = response.products;
    NSLog(@"%@",myProduct);
    if (myProduct.count == 0) {
        NSLog(@"无法获取产品信息，购买失败。");
        return;
    }
    SKPayment * payment = [SKPayment paymentWithProduct:myProduct[0]];
    [[SKPaymentQueue defaultQueue] addPayment:payment];
}

#pragma mark - others SKPaymentTransactionObserver

- (void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions {
    for (SKPaymentTransaction *transaction in transactions)
    {
        switch (transaction.transactionState)
        {
            case SKPaymentTransactionStatePurchased://交易完成
                NSLog(@"transactionIdentifier = %@", transaction.transactionIdentifier);
                [WJIAPManager completeTransaction:transaction];
                break;
            case SKPaymentTransactionStateFailed://交易失败
                NSLog(@"交易失败");
                [WJIAPManager failedTransaction:transaction];
                break;
            case SKPaymentTransactionStateRestored://已经购买过该商品
                NSLog(@"已经购买过该产品");
                [self restoreTransaction:transaction];
                break;
            case SKPaymentTransactionStatePurchasing:      //商品添加进列表
                NSLog(@"商品添加进列表");
                break;
            default:
                break;
        }
    }
}
+ (void)completeTransaction:(SKPaymentTransaction *)transaction {
    // Your application should implement these two methods.
    NSLog(@"---------进入了这里");
    NSString * productIdentifier = transaction.payment.productIdentifier;
    //transaction.transactionReceipt
    //    NSString * receipt = [[NSString alloc]initWithData:transaction.transactionReceipt encoding:NSUTF8StringEncoding];

    //这里要用base64编码
    //    NSLog(@"%@",receipt);
    if ([productIdentifier length] > 0) {
        // 向自己的服务器验证购买凭证
    }
    _successfulBlock();
    [[SKPaymentQueue defaultQueue] finishTransaction: transaction];

}
+ (void)failedTransaction:(SKPaymentTransaction *)transaction {
    if(transaction.error.code != SKErrorPaymentCancelled) {
        NSLog(@"购买失败");
        _failureBlock();
    } else {
        NSLog(@"用户取消交易");
        _cancelBlock();
    }
    [[SKPaymentQueue defaultQueue] finishTransaction: transaction];
}
- (void)restoreTransaction:(SKPaymentTransaction *)transaction {
    // 对于已购商品，处理恢复购买的逻辑
    [[SKPaymentQueue defaultQueue] finishTransaction: transaction];
}

@end

内购价格表：

差不多就这样的，弄清楚流程就简单了，如果觉得还没怎么弄懂的话就看下面一些链接吧，－0-

网址链接

iOS应用内购内付费：http://blog.csdn.net/shenjie12345678/article/details/40978977

iap（程序内购买）完全攻略：http://fei263.blog.163.com/blog/static/927937242011321105241823/

iOS应用内付费开发步骤：http://blog.csdn.net/xiaoxiangzhu660810/article/details/17434907

iOS应用内付费开发步骤列表：http://www.cocoachina.com/industry/20130313/5814.html

iOS应用iap设置总结：http://www.cocoachina.com/ios/20120214/3976.html

补充:

可能会出现一些错误

Error Domain=SKErrorDomain Code=0 "Cannot connect to iTunes Store" UserInfo=0x7fe263f12ff0 {NSLocalizedDescription=Cannot connect to iTunes Store}

这个原因最大可能是你用的模拟器，需要用真机测试