Question

如何将相册中的动态GIF图转化成NSData类型

Answer 1

StackOverFlow就是NB啊！！

NSURL *imageRefURL = [info valueForKey:UIImagePickerControllerReferenceURL];

ALAssetsLibrary* assetLibrary = [[ALAssetsLibrary alloc] init];
void (^ALAssetsLibraryAssetForURLResultBlock)(ALAsset *) = ^(ALAsset *asset) {

if (asset != nil) {

[[NSFileManager defaultManager] removeItemAtPath:[PaiKeUnity getPrevImgPath] error:nil];

ALAssetRepresentation *rep = [asset defaultRepresentation];
Byte *imageBuffer = (Byte*)malloc(rep.size);
NSUInteger bufferSize = [rep getBytes:imageBuffer fromOffset:0.0 length:rep.size error:nil];
NSData *imageData = [NSData dataWithBytesNoCopy:imageBuffer length:bufferSize freeWhenDone:YES];
[imageData writeToFile:[PaiKeUnity getPrevImgPath] atomically:YES];

[self setPrevImage];
}
else {
}
};

[assetLibrary assetForURL:imageRefURL
resultBlock:ALAssetsLibraryAssetForURLResultBlock
failureBlock:^(NSError *error){
}];
[assetLibrary release];