Unity的IOS接入新浪微博

单机游戏如果没有服务端，那微博就是一个推广和讨论的好地方。

首先，可以看一下雨松的教程：

http://www.xuanyusong.com/archives/1794

我用的Unity4.0的beta版，发现了不少问题：

一、ViewControl的获得改变了：

从sGLViewController 变化为--》UnityGetGLViewController()

二、游戏内截图所放的位置有变化：

Application.persistentDataPath打印出来的是：
/var/mobile/Applications/27F8B3B1-8E33-4196-8610-40D87D6E7F1A/Documents

从IOS中读取的图片路径是：
/var/mobile/Applications/27F8B3B1-8E33-4196-8610-40D87D6E7F1A/Library/Documentation/XX.png

所以我一直无法发出图片。

解决方式是：把路径从Unity3D中传出来。

为了测试，我找了个把截屏的图放到手机相册里的代码。

using UnityEngine;
 using System.Collections;
 using System.Runtime.InteropServices;
 
 public class IOSTestSDK : MonoBehaviour {
 
     [DllImport("__Internal")]
     private static extern void _AuthLogin();
     
     [DllImport("__Internal")]
     private static extern void _ScreenshotWriteToAlbum(string path);
     
     public static void ActivateButton()
     {
         if (Application.platform != RuntimePlatform.OSXEditor)
         {
             //_PressButton();
             
             Debug.Log("Before _AuthLogin");
             _AuthLogin();
             Debug.Log("After _AuthLogin");
         }
     }
     
     public static void ScreenshotWriteToAlbum(string path)
     {
         _ScreenshotWriteToAlbum(path);
     }
 }
 

NSString* imgPath;
void _ScreenshotWriteToAlbum(const char* path)
 {
     //imgPath = [NSString stringWithUTF8String:path];
     imgPath = [[NSString alloc] initWithCString:path encoding:NSStringEncodingConversionAllowLossy];
     sendImg = [UIImage imageWithContentsOfFile:[NSString stringWithUTF8String:path]];
     
     ALAssetsLibrary* library = [[[ALAssetsLibrary alloc] init] autorelease];
     NSMutableDictionary* metadata = [[[NSMutableDictionary alloc] init] autorelease];
     
     [library writeImageToSavedPhotosAlbum:sendImg.CGImage metadata:metadata completionBlock:^(NSURL *assetURL, NSError *error) {
         if(error)
         {
             NSLog(@"Screenshot error -%@", error);
         }
         else
         {
             NSLog(@"Screenshot taken - %@", error);
         }
     }];
     
 }

-(void)engineDidLogIn:(WBEngine *)engine
 {
     // login success
 //    NSArray* paths = NSSearchPathForDirectoriesInDomains(NSDocumentationDirectory, NSUserDomainMask, YES);
 //    NSString* path = [paths objectAtIndex:0];
 //    NSString* imagePath = [path stringByAppendingPathComponent:@"kitchen.png"];
     
  //   NSData* data = [NSData dataWithContentsOfFile:imagePath];
 //    UIImage* img = [UIImage imageWithData:data];
     
  //   NSLog(@"path: -%@",imgPath);
     UIImage* img = [UIImage imageWithContentsOfFile:imgPath];
 
     [weiboEngine sendWeiBoWithText:@"测试IOS发微博" image:img];
 }

最后结果：