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POScreenshot code working perfectly in Simulator but not in iOS Device
 

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    <p>This is my code for screenshot to save in library or do email. The problem is, it is working perfectly in Simulator but when i run this code in Device whatever on screen it only gets white image. I have tried with iOS 5 and iOS 6 both but no luck What should be the reason Where i am wrong</p> <pre><code> NSInteger myDataLength = 320 * 430 * 4; GLubyte *buffer1 = (GLubyte *) malloc(myDataLength); GLubyte *buffer2 = (GLubyte *) malloc(myDataLength); //Read image memory form OpenGL glReadPixels(0, 50, 320, 430, GL_RGBA, GL_UNSIGNED_BYTE, buffer1); //Invert result image buffer into secondary buffer for(int y = 0; y &lt; 430; y++) { for(int x = 0; x &lt; 320 * 4; x++) { buffer2[(429 - y) * 320 * 4 + x] = buffer1[y * 4 * 320 + x]; } } //Create bitmap context CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB(); CGContextRef destContext = CGBitmapContextCreate(buffer2, 320, 430, 8, 320 * 4, colorSpace, kCGImageAlphaPremultipliedLast | kCGBitmapByteOrder32Big); //Get image from context CGImageRef resultContext = CGBitmapContextCreateImage(destContext); UIImage *resultImg = [UIImage imageWithCGImage: resultContext]; CGImageRelease(resultContext); //Send to mail or Save to PhotoLibrary if (sendMail) { [self emailImage: resultImg]; } else { UIImageWriteToSavedPhotosAlbum(resultImg, nil, nil, nil); } //Release allocated memory // [resultImg release]; free(buffer2); free(buffer1); CGContextRelease(destContext); CGColorSpaceRelease(colorSpace); </code></pre> <p>is there any class i am using which is supported by Simulator and not the device If it so then which one because as far as i search i found nothing like that.</p>
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