cocos2D中图像的异步下载

Question

我已经使用了CCSprite并且使用函数spriteWithFile给出了项目中存在的图像。现在我想从服务器下载图像并将其加载到cocos2D游戏场景中的CCSprite中。什么是好的选择。请建议。

我使用此代码，它不工作：提前

NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"http://50.62.138.228:6026/1370user.jpg"]]]; 
    NSURLResponse *response; 
    NSError *error; 
    NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error]; 
    CCTexture2D *texture = [[CCTexture2D alloc] initWithData:responseData 
               pixelFormat:kCCTexture2DPixelFormat_RGBA8888 
                pixelsWide:50 
                pixelsHigh:50 
               contentSize:CGSizeMake(50, 50)]; 
    sprite_Temp = [CCSprite spriteWithTexture:texture]; 
    sprite_Temp.position=ccp(432,273); 
    [self addChild:sprite_Temp z:5]; 

感谢。

Answer 1

顺序是：

CCImage::initWithImageData(void* pData, int nDataLen, ...) 
CCTexture2D::initWithImage(CCImage* uiImage); 
CCSprite::initWithTexture(CCTexture2D* pTexture); 

或iphone

从任何URL

NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"http://sdufhs.com/img.png"]]]; 

NSURLResponse *response; 
NSError *error; 
NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error]; 

NSString *strResponse = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding]; 

您可以在数据的形式获取数据获取数据...

NSData *imgData = UIImagePNGRepresentation(image); 

CCTexture2D *texture = [[CCTexture2D alloc] initWithData:imgData 
             pixelFormat:kTexture2DPixelFormat_RGBA8888 
             pixelsWide:width2 
             pixelsHigh:height2 
            contentSize:size]; 

    CCSprite *sgfd = [CCSprite spriteWithTexture:texture]; 

Answer 2

查看我的tutorial on creating a Webcam viewer with Cocos2D。本文的第二部分解释了异步图像下载以加快速度。示例项目可以免费下载MIT许可证。