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feat(ios): check necessity of reloading image for HippyImageView

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This commit is contained in:
mengyanluo
2020-11-20 10:09:52 +08:00
committed by luomy
parent 9d4f724042
commit 34ce4eb72a
1 changed files with 25 additions and 4 deletions
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ios/sdk/component/image/HippyImageView.m
+25 -4
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@@ -140,6 +140,9 @@ UIImage *HippyBlurredImageWithRadiusv(UIImage *inputImage, CGFloat radius)
}
@property (nonatomic) HippyAnimatedImageOperation *animatedImageOperation;
@property (atomic, strong) NSString *pendingImageSourceUri;// The image source that's being loaded from the network
@property (atomic, strong) NSString *imageSourceUri;// The image source that's currently displayed
@end
@implementation HippyImageView
@@ -168,9 +171,9 @@ UIImage *HippyBlurredImageWithRadiusv(UIImage *inputImage, CGFloat radius)
[super didMoveToWindow];
if (!self.window) {
[self cancelImageLoad];
} else {
[self reloadImage];
}
} else if ([self shouldChangeImageSource]) {
[self reloadImage];
}
}
- (void)didReceiveMemoryWarning {
@@ -265,6 +268,20 @@ UIImage *HippyBlurredImageWithRadiusv(UIImage *inputImage, CGFloat radius)
}
}
- (BOOL)shouldChangeImageSource
{
// We need to reload if the desired image source is different from the current image
// source AND the image load that's pending
NSDictionary *source = [self.source firstObject];
if (source) {
NSString *desiredImageSource = source[@"uri"];
return ![desiredImageSource isEqual:self.imageSourceUri] &&
![desiredImageSource isEqual:self.pendingImageSourceUri];
}
return NO;
}
- (void)reloadImage
{
NSDictionary *source = [self.source firstObject];
@@ -273,7 +290,7 @@ UIImage *HippyBlurredImageWithRadiusv(UIImage *inputImage, CGFloat radius)
_onLoadStart(@{});
}
NSString *uri = source[@"uri"];
self.pendingImageSourceUri = uri;
BOOL isBlurredImage = NO;
UIImage *image = [[HippyImageCacheManager sharedInstance] loadImageFromCacheForURLString:uri radius:_blurRadius isBlurredImage:&isBlurredImage];
if (image) {
@@ -406,6 +423,7 @@ UIImage *HippyBlurredImageWithRadiusv(UIImage *inputImage, CGFloat radius)
- (void)cancelImageLoad
{
self.pendingImageSourceUri = nil;
NSDictionary *source = [self.source firstObject];
if (_bridge.imageLoader) {
[_animatedImageOperation cancel];
@@ -426,6 +444,7 @@ UIImage *HippyBlurredImageWithRadiusv(UIImage *inputImage, CGFloat radius)
[self cancelImageLoad];
[self.layer removeAnimationForKey:@"contents"];
self.image = nil;
self.imageSourceUri = nil;
}
- (UIImage *) imageFromData:(NSData *)data {
@@ -520,6 +539,8 @@ UIImage *HippyBlurredImageWithRadiusv(UIImage *inputImage, CGFloat radius)
__weak typeof(self) weakSelf = self;
void (^setImageBlock)(UIImage *) = ^(UIImage *image) {
weakSelf.pendingImageSourceUri = nil;
weakSelf.imageSourceUri = url;
if (image.hippyKeyframeAnimation) {
[weakSelf.layer addAnimation:image.hippyKeyframeAnimation forKey:@"contents"];
} else {