Support for `imageNamed`

[fdenis-gpsw]

As far as I can tell, there is no support for using xcasset bundles of assets with YYFrameImage I might need some support for a project I am working on, interested in a pull request if I need it / get it done ?

[ibireme]

YYImage project does not support xcassets because it can't access the image data in the assets and the system image cache may cause memory problems.

I recommend to use [UIImage animatedImageWithImages:duration:] to create frame image from xcassets.

[fdenis-gpsw]

You can easily prototype support in YYFrameImage by using something like:

- (nullable instancetype)initWithImageNames:(NSArray<NSString *> *)names
                             frameDurations:(NSArray<NSNumber *> *)frameDurations
                                  loopCount:(NSUInteger)loopCount
{
    NSString *firstName = names[0];

    CGFloat scale = [UIScreen mainScreen].scale;
    UIImage *firstCG = [[UIImage imageNamed:firstName] yy_imageByDecoded];
    self = [self initWithCGImage:firstCG.CGImage scale:scale orientation:UIImageOrientationUp];
    if (!self) return nil;
    long frameByte = CGImageGetBytesPerRow(firstCG.CGImage) * CGImageGetHeight(firstCG.CGImage);
    _oneFrameBytes = (NSUInteger)frameByte;
    _imageNames = names.copy;
    _frameDurations = frameDurations.copy;
    _loopCount = loopCount;

    return self;

}

And by modifying - (NSUInteger)animatedImageFrameCount and - (UIImage *)animatedImageFrameAtIndex:(NSUInteger)index to also use _imageNames

the system image cache may cause memory problems

Could you detail how that could be an issue ?

I recommend to use [UIImage animatedImageWithImages:duration:] to create frame image from xcassets.

Which sadly doesn't support non-constant framerate :-(

[ibireme]

YYImage only hold the image data or image file path in memory, but imageNamed method may hold the decoded image data in memory and may cause memory warning.

See also: http://stackoverflow.com/questions/22856283/use-xcassets-without-imagenamed-to-prevent-memory-problems