UIGraphicsBeginImageContext(view.frame.size); [view.layer renderInContext:UIGraphicsGetCurrentContext()]; UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); return viewImage; This is the code i am using i need to take screenshot of a specific area of uiview
This is the code for taking the screenshot for specific area and save in NSDocumentDirectory.
UIGraphicsBeginImageContext(self.view.bounds.size); [self.view.layer renderInContext:UIGraphicsGetCurrentContext()]; UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext(); viewImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); CGImageRef img = [viewImage CGImage]; img = CGImageCreateWithImageInRect(img, CGRectMake(0,60, 320, 330)); // This is the specific frame size whatever you want to take scrrenshot viewImage = [UIImage imageWithCGImage:img]; //writeToFile---------------- NSArray *path=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *imagePath=[path objectAtIndex:0]; NSFileManager *fileManager = [NSFileManager defaultManager] ; BOOL isDir ; imagePath =[imagePath stringByAppendingPathComponent:@"PicPanleImage"]; if(YES == [fileManager fileExistsAtPath:imagePath isDirectory:&isDir]) { } else { [fileManager createDirectoryAtPath:imagePath withIntermediateDirectories:NO attributes:nil error:nil]; } imagePath =[imagePath stringByAppendingPathComponent:@"Image.jpeg"]; NSData *tempImageData=[NSData dataWithData:UIImagePNGRepresentation(viewImage)]; [tempImageData writeToFile:imagePath atomically:YES]; You are not saving the Image. Try This
UIGraphicsBeginImageContext(CGSizeMake(self.view.frame.size.width,self.view.size.height)); CGContextRef context =UIGraphicsGetCurrentContext(); [view.layer renderInContext:context]; UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); UIImageWriteToSavedPhotosAlbum(viewImage, nil, nil,nil); Check the following code.
- (UIImage *)snapshot { UIImage* snapShot = nil; UIGraphicsBeginImageContext(snapShotView.frame.size); { [snapShotView.layer renderInContext: UIGraphicsGetCurrentContext()]; snapShot = UIGraphicsGetImageFromCurrentImageContext(); } UIGraphicsEndImageContext(); return snapShot; } To capture UIView:
CGRect rect = [targetView bounds]; UIGraphicsBeginImageContextWithOptions(rect.size,YES,0.0f); CGContextRef context = UIGraphicsGetCurrentContext(); [captureView.layer renderInContext:context]; UIImage *capturedImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); To capture UIWebView:
UIGraphicsBeginImageContext(targetWebView.frame.size); [self.view.layer renderInContext:UIGraphicsGetCurrentContext()]; UIImage *capturedImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); Save to SavedPhotosAlbum:
UIImageWriteToSavedPhotosAlbum(capturedImage, nil, nil, nil); Save as jpg format into the app's document folder:
NSString *imagePath = [NSHomeDirectory() stringByAppendingPathComponent:[NSString stringWithFormat:@"Documents/capturedImage.jpg"]]; [UIImageJPEGRepresentation(capturedImage, 0.95) writeToFile:imagePath atomically:YES]; Suppose that you are using an image then you can use this code.
UIImageView *v = [[UIImageView alloc]initWithImage:YourImage]; UIGraphicsBeginImageContext(v.bounds.size); CGContextRef context = UIGraphicsGetCurrentContext(); CGContextSaveGState(context); [v drawRect:CGRectMake(0,0,width,height)]; CGContextRestoreGState(context); UIImage *image1 = UIGraphicsGetImageFromCurrentImageContext(); float actualHeight = image1.size.height; float actualWidth = image1.size.width; float imgRatio = actualWidth / actualHeight; float maxRatio = self.view.frame.size.width/self.view.frame.size.height; if(imgRatio!=maxRatio){ if(imgRatio < maxRatio){ imgRatio = self.view.frame.size.height / actualHeight; actualWidth = imgRatio * actualWidth; actualHeight = self.view.frame.size.height; }else{ imgRatio = self.view.frame.size.width / actualWidth; actualHeight = imgRatio * actualHeight; actualWidth = self.view.frame.size.width; } } CGRect rect = CGRectMake(0.0, 0.0, actualWidth,(actualHeight+30)); UIGraphicsBeginImageContext(rect.size); [image1 drawInRect:rect]; UIImage *img = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); NSString *imageStr; UIGraphicsBeginImageContext(img.size); // [img drawAtPoint:CGPointMake(0, 10)]; [img drawInRect:CGRectMake(0, 20, 340, 410)]; 