利用Unity3d制作完毕游戏发布到appstore，有时会做游戏内购买虚拟物品，也就是内购。
在Ios开发中叫做：In App Purchase，简称IAP
那么如何在unity3d内嵌入IPA呢？几经辗转，多方搜索，摸索出点经验，分享给大家，如有疏漏，还请指教。
当然也有人们写好的插件可用，我觉得自己写的才用着顺手。
一、准备条件：
1、 申请苹果开发者账号。后台先创建证书，在创建应用，填写应用详情，创建测试用的账号，创建内购项目。
这里根据需要创建consumable（每次都需要购买）或者non-consumable的（购买一次一直可用，就是如果买过可以恢复购买）内购项目。
如下我们创建了non-consumable类型，名称“Package_2”,这个名称仅能使用一次，即使删除了也不能够再次利用。
创建测试人员账号，可以免费测试购买本开发者账号下面所有应用的物品：
2、简单了解ios开发的Object-C语言，主要是用来做内购，详细请百度：
3、简单了解IPA
详细请参见：StoreKit Guide(In App Purchase)翻译
http://yarin.blog.51cto.com/1130898/549141
4、了解unity3d与ios通信，详细参见：为iOS创建插件 Building Plugins for iOS
http://game.ceeger.com/Manual/PluginsForIOS.html
二、下面我们单独创建一个例子来演示：
1、 创建工程，切换到ios平台、创建空gameobject，改名为Main，创建点击按钮触发购买的脚本，挂在Main上面。创建平台文件，下面创建子文件夹IOS。
2、 在设置里面修改包名，改为你自己在appstore后台创建的名称
IPADemo里面编写与ios通信代码以及购买代码，其中内购商品名称修改为自己appstore后台定义的：private stringproduct = "Package_2";
using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using System.Runtime.InteropServices;
public class IPADemo : MonoBehaviour {
publicList<string> productInfo = new List<string>();
privatestring product = "Package_2";
[DllImport("__Internal")]
privatestatic extern void TestMsg();//测试信息发送
[DllImport("__Internal")]
privatestatic extern void TestSendString(string s);//测试发送字符串
[DllImport("__Internal")]
privatestatic extern void TestGetString();//测试接收字符串
[DllImport("__Internal")]
privatestatic extern void InitIAPManager();//初始化
[DllImport("__Internal")]
privatestatic extern bool IsProductAvailable();//判断是否可以购买
[DllImport("__Internal")]
privatestatic extern void RequstProductInfo(string s);//获取商品信息
[DllImport("__Internal")]
privatestatic extern void BuyProduct(string s);//购买商品
//测试从xcode接收到的字符串
voidIOSToU(string s)
{
Debug.Log("[MsgFrom ios]"+s);
}
//获取product列表
voidShowProductList(string s){
productInfo.Add(s);
}
//获取商品回执
voidProvideContent(string s)
{
Debug.Log("[MsgFrom ios]proivideContent : "+s);
}
voidStart ()
{
InitIAPManager();
}
voidUpdate ()
{
}
voidOnGUI()
{
if(Btn("GetProducts")){
if(!IsProductAvailable())
thrownew System.Exception("IAP not enabled");
productInfo= new List<string>();
RequstProductInfo(product);
}
GUILayout.Space(40);
for(inti=0; i<productInfo.Count; i++){
if(GUILayout.Button(productInfo[i],GUILayout.Height (100), GUILayout.MinWidth (200))){
string[]cell = productInfo[i].Split('\t');
Debug.Log("[Buy]"+cell[cell.Length-1]);
BuyProduct(cell[cell.Length-1]);
}
}
}
boolBtn(string msg){
GUILayout.Space(100);
return GUILayout.Button (msg,GUILayout.Width(200),GUILayout.Height(100));
}
}
还需要在xcode里面编写内购代码然后复制到平台下，ios文件夹下：
只能在真机上才能出现内购窗，Unity中运行效果如下：
3、导出ios工程，在mac上xcode中打开：
4、加入依赖项，libz，storekit：
5、在真机上运行，首先获得商品列表，然后点击购买，然后在弹出的账号密码框里面修改为沙盒测试账号。即可测试购买成功。
2个.h文件分别为：
1、IAPInterface.h
#import <Foundation/Foundation.h>
@interface IAPInterface : NSObject
@end
2、IAPManager.h
#import <Foundation/Foundation.h>
#import <StoreKit/StoreKit.h>
@interface IAPManager : NSObject<SKProductsRequestDelegate, SKPaymentTransactionObserver>{
SKProduct *proUpgradeProduct;
SKProductsRequest *productsRequest;
}
-(void)attachObserver;
-(BOOL)CanMakePayment;
-(void)requestProductData:(NSString *)productIdentifiers;
-(void)buyRequest:(NSString *)productIdentifier;
@end
2个.m文件分别为：
1/IAPManager.m
#import "IAPManager.h"
@implementation IAPManager
-(void) attachObserver{
NSLog(@"AttachObserver");
[[SKPaymentQueue defaultQueue] addTransactionObserver:self];
}
-(BOOL) CanMakePayment{
return [SKPaymentQueue canMakePayments];
}
-(void) requestProductData:(NSString *)productIdentifiers{
NSArray *idArray = [productIdentifiers componentsSeparatedByString:@"\t"];
NSSet *idSet = [NSSet setWithArray:idArray];
[self sendRequest:idSet];
}
-(void)sendRequest:(NSSet *)idSet{
SKProductsRequest *request = [[SKProductsRequest alloc] initWithProductIdentifiers:idSet];
request.delegate = self;
[request start];
}
-(void)productsRequest:(SKProductsRequest *)request didReceiveResponse:(SKProductsResponse *)response{
NSArray *products = response.products;
for (SKProduct *p in products) {
UnitySendMessage("Main", "ShowProductList", [[self productInfo:p] UTF8String]);
}
for(NSString *invalidProductId in response.invalidProductIdentifiers){
NSLog(@"Invalid product id:%@",invalidProductId);
}
[request autorelease];
}
-(void)buyRequest:(NSString *)productIdentifier{
SKPayment *payment = [SKPayment paymentWithProductIdentifier:productIdentifier];
[[SKPaymentQueue defaultQueue] addPayment:payment];
}
-(NSString *)productInfo:(SKProduct *)product{
NSArray *info = [NSArray arrayWithObjects:product.localizedTitle,product.localizedDescription,product.price,product.productIdentifier, nil];
return [info componentsJoinedByString:@"\t"];
}
-(NSString *)transactionInfo:(SKPaymentTransaction *)transaction{
return [self encode:(uint8_t *)transaction.transactionReceipt.bytes length:transaction.transactionReceipt.length];
//return [[NSString alloc] initWithData:transaction.transactionReceipt encoding:NSASCIIStringEncoding];
}
-(NSString *)encode:(const uint8_t *)input length:(NSInteger) length{
static char table[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
NSMutableData *data = [NSMutableData dataWithLength:((length+2)/3)*4];
uint8_t *output = (uint8_t *)data.mutableBytes;
for(NSInteger i=0; i<length; i+=3){
NSInteger value = 0;
for (NSInteger j= i; j<(i+3); j++) {
value<<=8;
if(j<length){
value |=(0xff & input[j]);
}
}
NSInteger index = (i/3)*4;
output[index + 0] = table[(value>>18) & 0x3f];
output[index + 1] = table[(value>>12) & 0x3f];
output[index + 2] = (i+1)<length ? table[(value>>6) & 0x3f] : '=';
output[index + 3] = (i+2)<length ? table[(value>>0) & 0x3f] : '=';
}
return [[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding];
}
-(void) provideContent:(SKPaymentTransaction *)transaction{
UnitySendMessage("Main", "ProvideContent", [[self transactionInfo:transaction] UTF8String]);
}
-(void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions{
for (SKPaymentTransaction *transaction in transactions) {
switch (transaction.transactionState) {
case SKPaymentTransactionStatePurchased:
[self completeTransaction:transaction];
break;
case SKPaymentTransactionStateFailed:
[self failedTransaction:transaction];
break;
case SKPaymentTransactionStateRestored:
[self restoreTransaction:transaction];
break;
default:
break;
}
}
}
-(void) completeTransaction:(SKPaymentTransaction *)transaction{
NSLog(@"Comblete transaction : %@",transaction.transactionIdentifier);
[self provideContent:transaction];
[[SKPaymentQueue defaultQueue] finishTransaction:transaction];
}
-(void) failedTransaction:(SKPaymentTransaction *)transaction{
NSLog(@"Failed transaction : %@",transaction.transactionIdentifier);
if (transaction.error.code != SKErrorPaymentCancelled) {
NSLog(@"!Cancelled");
}
[[SKPaymentQueue defaultQueue] finishTransaction:transaction];
}
-(void) restoreTransaction:(SKPaymentTransaction *)transaction{
NSLog(@"Restore transaction : %@",transaction.transactionIdentifier);
[[SKPaymentQueue defaultQueue] finishTransaction:transaction];
}
@end
2、#import "IAPInterface.h"
#import "IAPManager.h"
@implementation IAPInterface
void TestMsg(){
NSLog(@"Msg received");
}
void TestSendString(void *p){
NSString *list = [NSString stringWithUTF8String:p];
NSArray *listItems = [list componentsSeparatedByString:@"\t"];
for (int i =0; i<listItems.count; i++) {
NSLog(@"msg %d : %@",i,listItems[i]);
}
}
void TestGetString(){
NSArray *test = [NSArray arrayWithObjects:@"t1",@"t2",@"t3", nil];
NSString *join = [test componentsJoinedByString:@"\n"];
UnitySendMessage("Main", "IOSToU", [join UTF8String]);
}
IAPManager *iapManager = nil;
void InitIAPManager(){
iapManager = [[IAPManager alloc] init];
[iapManager attachObserver];
}
bool IsProductAvailable(){
return [iapManager CanMakePayment];
}
void RequstProductInfo(void *p){
NSString *list = [NSString stringWithUTF8String:p];
NSLog(@"productKey:%@",list);
[iapManager requestProductData:list];
}
void BuyProduct(void *p){
[iapManager buyRequest:[NSString stringWithUTF8String:p]];
}
@end