blocks|key|2459838|text|我不确定GitHub版本是做什么的，但这段代码会截屏，我刚刚在iOS+6上测试了它，它工作得很好。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2459839|%2B(UIImage*)+screenshotWithStartNode:(CCNode*)startNode
{
++++[CCDirector+sharedDirector].nextDeltaTimeZero+=+YES;

++++CGSize+winSize+=+[CCDirector+sharedDirector].winSize;
++++CCRenderTexture*+rtx+=+
++++[CCRenderTexture+renderTextureWithWidth:winSize.width+
+++++++++++++++++++++++++++++++++height:winSize.height];
++++[rtx+begin];
++++[startNode+visit];
++++[rtx+end];

++++return+[rtx+getUIImage];
}|code-block|syntax|javascript|2459840|你可以这样叫它|2459841|CCScene+*scene+=+[[CCDirector+sharedDirector]+runningScene];
CCNode+*n+=+[scene.children+objectAtIndex:0];
UIImage+*img+=+[AppController+screenshotWithStartNode:n];|2459842|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

I am not sure what the GitHub version does but this code will take a screenshot and I just tested it on iOS 6 and it works fine.

<pre><code>+(UIImage*) screenshotWithStartNode:(CCNode*)startNode
{
 [CCDirector sharedDirector].nextDeltaTimeZero = YES;

 CGSize winSize = [CCDirector sharedDirector].winSize;
 CCRenderTexture* rtx = 
 [CCRenderTexture renderTextureWithWidth:winSize.width 
 height:winSize.height];
 [rtx begin];
 [startNode visit];
 [rtx end];

 return [rtx getUIImage];
}
</code></pre>

You can call it like this

<pre><code>CCScene *scene = [[CCDirector sharedDirector] runningScene];
CCNode *n = [scene.children objectAtIndex:0];
UIImage *img = [AppController screenshotWithStartNode:n];
</code></pre>

blocks|key|4445903|text|这在这里适用于Cocos2d+V3。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4445904|%2B(UIImage*)+screenshotWithStartNode:(CCNode*)startNode
{
++++[CCDirector+sharedDirector].nextDeltaTimeZero+=+YES;

++++CGSize+viewSize+=+[[CCDirector+sharedDirector]+viewSize];
++++CCRenderTexture*+rtx+=
++++[CCRenderTexture+renderTextureWithWidth:viewSize.width
+++++++++++++++++++++++++++++++++++++height:viewSize.height];
++++[rtx+begin];
++++[startNode+visit];
++++[rtx+end];

++++return+[rtx+getUIImage];
}|code-block|syntax|javascript|4445905|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

This here works for Cocos2d V3.

<pre><code>+(UIImage*) screenshotWithStartNode:(CCNode*)startNode
{
 [CCDirector sharedDirector].nextDeltaTimeZero = YES;

 CGSize viewSize = [[CCDirector sharedDirector] viewSize];
 CCRenderTexture* rtx =
 [CCRenderTexture renderTextureWithWidth:viewSize.width
 height:viewSize.height];
 [rtx begin];
 [startNode visit];
 [rtx end];

 return [rtx getUIImage];
}
</code></pre>

blocks|key|4445917|text|以上2个答案在Cocos2d+3.2.1中不起作用|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4445918|这是针对Cocos2d+3.2.1+%2B的解决方案|4445919|-(UIImage*)+takePresentScreenshot
{
++++[CCDirector+sharedDirector].nextDeltaTimeZero+=+YES;

++++CGSize+size+=+[[CCDirector+sharedDirector]+viewSize];
++++CCRenderTexture+*renderTxture+=+[CCRenderTexture+renderTextureWithWidth:size.width
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++height:size.height];
++++[renderTxture+begin];
++++[[[CCDirector+sharedDirector]+runningScene]+visit];
++++[renderTxture+end];

++++return+[renderTxture+getUIImage];
}

UIImage*+screenshot+=+[self+takePresentScreenshot];|code-block|syntax|javascript|4445920|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Above 2 answers not worked in Cocos2d 3.2.1

Here is Solution for Cocos2d 3.2.1 +

<pre><code>-(UIImage*) takePresentScreenshot
{
 [CCDirector sharedDirector].nextDeltaTimeZero = YES;

 CGSize size = [[CCDirector sharedDirector] viewSize];
 CCRenderTexture *renderTxture = [CCRenderTexture renderTextureWithWidth:size.width
 height:size.height];
 [renderTxture begin];
 [[[CCDirector sharedDirector] runningScene] visit];
 [renderTxture end];

 return [renderTxture getUIImage];
}

UIImage* screenshot = [self takePresentScreenshot];
</code></pre>

blocks|key|2461121|text|最好的答案适用于iPads+(我已经在iPads+v1到4上测试过了)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2461122|它不适用于实际的设备:+iPhone5、iOS7。|2461123|然而，它确实适用于这样的iPhone+5的模拟器！|2461124|这种不一致快把我逼疯了！|2461125|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|L|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|M|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

The top answer works for iPads (I have tested on iPads v1 thru 4).

It does NOT work for the actual device: iPhone5, iOS7.

However, it does work for simulators of such an iPhone 5!

That inconsistency is driving me crazy!

I have an application that takes a screenshot of a scene and saves it to a file. I have this working and the application is on the store. Today, I have downloaded iOS 6 and the method I am using is not working anymore. I tested all I know to make it work, googled around and found this:

<a href="http://www.cocos2d-iphone.org/forum/topic/37809?replies=22#post-180983" rel="noreferrer">http://www.cocos2d-iphone.org/forum/topic/37809?replies=22#post-180983</a>

Users seem to agree that this is working on iOS 5, but I have tested this on iOS 6 and it is producing black screenshots.

I am not a specialist in Cocos2D so, I cannot say exactly what is wrong with this guy's code. the author has a sample project on github and even his project is producing black screenshots on iOS 6.

Any clues? Thanks.

thanks

Cocos2D 2.0 screenshots on iOS 6

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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