Cocos2d-x3.1及3.2实现截屏功能

1、Cocos2d-x3.1
在Cocos2d-x3.2之前，Cocos引擎没有提供截图功能，但是可以通过RenderTexture实现，
原文链接：http://www.it165.net/pro/html/201409/21451.html

1.1首先在CCDirector.h中添加如下代码：并在其中添加头文件 #include "2d/CCRenderTexture.h"

view source print ?

1.@H_403_17@ void@H_403_17@saveScreenshot(@H_403_17@const@H_403_17@std::string& fileName,@H_403_17@std::function<@H_403_17@(@H_403_17@std::string&)>& callback);@H_403_17@
1.2然后在CCDirector.cpp中添加如下代码： 01.@H_403_17@ Director::saveScreenshot(@H_403_17@std::string &fileName,宋体; background:none">std::string &)> &callback)@H_403_17@ 02.@H_403_17@ {@H_403_17@ 03.@H_403_17@ Image::Format format;@H_403_17@ 04.@H_403_17@ //进行后缀判断@H_403_17@ 05.@H_403_17@ if@H_403_17@(std::string::npos != fileName.find_last_of(@H_403_17@"."@H_403_17@)){@H_403_17@ 06.@H_403_17@ auto extension = fileName.substr(fileName.find_last_of(@H_403_17@),fileName.length());@H_403_17@ 07.@H_403_17@ (!extension.compare(@H_403_17@".png"@H_403_17@)) {@H_403_17@ 08.@H_403_17@ format = Image::Format::PNG;@H_403_17@ 09.@H_403_17@ }@H_403_17@else@H_403_17@".jpg"@H_403_17@10.@H_403_17@ format = Image::Format::JPG;@H_403_17@ 11.@H_403_17@ else@H_403_17@{@H_403_17@ 12.@H_403_17@ log(@H_403_17@"cocos2d: the image can only be saved as JPG or PNG format"@H_403_17@);@H_403_17@ 13.@H_403_17@ return@H_403_17@;@H_403_17@ 14.@H_403_17@ }@H_403_17@ 15.@H_403_17@ 16.@H_403_17@ 17.@H_403_17@ 18.@H_403_17@ 19.@H_403_17@ //获取屏幕尺寸，初始化一个空的渲染纹理对象@H_403_17@ 20.@H_403_17@ auto renderTexture = RenderTexture::create(getWinSize().width,getWinSize().height,Texture2D::PixelFormat::RGBA8888);@H_403_17@ 21.@H_403_17@ //清空并开始获取@H_403_17@ 22.@H_403_17@ renderTexture->beginWithClear(@H_403_17@0@H_403_17@.0f,@H_403_17@.0f);@H_403_17@ 23.@H_403_17@ //遍历场景节点对象，填充纹理到RenderTexture中@H_403_17@ 24.@H_403_17@ getRunningScene()->visit();@H_403_17@ 25.@H_403_17@ //结束获取@H_403_17@ 26.@H_403_17@ renderTexture->end();@H_403_17@ 27.@H_403_17@ //保存文件@H_403_17@ 28.@H_403_17@ renderTexture->saveToFile(fileName,format);@H_403_17@ 29.@H_403_17@ //使用schedule在下一帧中调用callback函数@H_403_17@ 30.@H_403_17@ auto fullPath = FileUtils::getInstance()->getWritablePath() + fileName;@H_403_17@ 31.@H_403_17@ auto scheduleCallback = [&,fullPath,callback](@H_403_17@float@H_403_17@dt){@H_403_17@ 32.@H_403_17@ callback(fullPath);@H_403_17@ 33.@H_403_17@ };@H_403_17@ 34.@H_403_17@ auto _schedule = getRunningScene()->getScheduler();@H_403_17@ 35.@H_403_17@ _schedule->schedule(scheduleCallback,宋体; background:none">this@H_403_17@,宋体; background:none">false@H_403_17@403_17@"screenshot"@H_403_17@);@H_403_17@ 36.@H_403_17@ 37.@H_403_17@ }@H_403_17@

Cocos2d-x3.1及3.2实现截屏功能

1、Cocos2d-x3.1

1.1首先在CCDirector.h中添加如下代码：并在其中添加头文件 #include "2d/CCRenderTexture.h"

1.2然后在CCDirector.cpp中添加如下代码：

1.3在HelloWorld.cpp中添加如下代码：

1.4点击按钮，实现截图功能，最后图片保存在沙盒中，可在Xcode控制台下看到文件保存路径。

2、Cocos2d-x3.2

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