如何在iphone中以jpg或png格式保存图像？

Question

我正在从UIImageView拍摄图像,这个图像我正在以编程方式创建.现在我想在资源文件夹中以jpg或png格式保存此图像.任何人都知道如何以jpg或png格式保存图像？

提前致谢!

Answer 1

这应该工作:

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES);
NSString *docs = [paths objectAtIndex:0];
NSString* path =  [docs stringByAppendingFormat:@"/image1.jpg"];

NSData* imageData = [NSData dataWithData:UIImageJPEGRepresentation(imageView.image, .8)];
NSError *writeError = nil;

if(![imageData writeToFile:path options:NSDataWritingAtomic error:&writeError]) {
    NSLog(@"%@: Error saving image: %@", [self class], [writeError localizedDescription]);
}