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Retain operation when post download related notifications

This commit is contained in:
zhongwuzw 2019-01-07 17:05:03 +08:00
parent c95be0994e
commit c547adc2a9
1 changed files with 9 additions and 9 deletions
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18
SDWebImage/SDWebImageDownloaderOperation.m
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@ -193,9 +193,9 @@ typedef NSMutableDictionary<NSString *, id> SDCallbacksDictionary;
for (SDWebImageDownloaderProgressBlock progressBlock in [self callbacksForKey:kProgressCallbackKey]) {
progressBlock(0, NSURLResponseUnknownLength, self.request.URL);
}
__weak typeof(self) weakSelf = self;
dispatch_async(dispatch_get_main_queue(), ^{
[[NSNotificationCenter defaultCenter] postNotificationName:SDWebImageDownloadStartNotification object:weakSelf];
__strong typeof(self) strongSelf = self;
[[NSNotificationCenter defaultCenter] postNotificationName:SDWebImageDownloadStartNotification object:strongSelf];
});
} else {
[self callCompletionBlocksWithError:[NSError errorWithDomain:NSURLErrorDomain code:NSURLErrorUnknown userInfo:@{NSLocalizedDescriptionKey : @"Task can't be initialized"}]];
@ -216,9 +216,9 @@ typedef NSMutableDictionary<NSString *, id> SDCallbacksDictionary;
if (self.dataTask) {
[self.dataTask cancel];
__weak typeof(self) weakSelf = self;
dispatch_async(dispatch_get_main_queue(), ^{
[[NSNotificationCenter defaultCenter] postNotificationName:SDWebImageDownloadStopNotification object:weakSelf];
__strong typeof(self) strongSelf = self;
[[NSNotificationCenter defaultCenter] postNotificationName:SDWebImageDownloadStopNotification object:strongSelf];
});
// As we cancelled the task, its callback won't be called and thus won't
@ -304,9 +304,9 @@ didReceiveResponse:(NSURLResponse *)response
disposition = NSURLSessionResponseCancel;
}
__weak typeof(self) weakSelf = self;
dispatch_async(dispatch_get_main_queue(), ^{
[[NSNotificationCenter defaultCenter] postNotificationName:SDWebImageDownloadReceiveResponseNotification object:weakSelf];
__strong typeof(self) strongSelf = self;
[[NSNotificationCenter defaultCenter] postNotificationName:SDWebImageDownloadReceiveResponseNotification object:strongSelf];
});
if (completionHandler) {
@ -384,11 +384,11 @@ didReceiveResponse:(NSURLResponse *)response
- (void)URLSession:(NSURLSession *)session task:(NSURLSessionTask *)task didCompleteWithError:(NSError *)error {
@synchronized(self) {
self.dataTask = nil;
__weak typeof(self) weakSelf = self;
dispatch_async(dispatch_get_main_queue(), ^{
[[NSNotificationCenter defaultCenter] postNotificationName:SDWebImageDownloadStopNotification object:weakSelf];
__strong typeof(self) strongSelf = self;
[[NSNotificationCenter defaultCenter] postNotificationName:SDWebImageDownloadStopNotification object:strongSelf];
if (!error) {
[[NSNotificationCenter defaultCenter] postNotificationName:SDWebImageDownloadFinishNotification object:weakSelf];
[[NSNotificationCenter defaultCenter] postNotificationName:SDWebImageDownloadFinishNotification object:strongSelf];
}
});
}