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Determines at runtime is UIApplication is available as per #1082

This commit is contained in:
Florent Vilmart 2015-03-20 15:29:28 -04:00
parent f2252b3499
commit 17a4803661
2 changed files with 11 additions and 1 deletions
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4
SDWebImage/SDImageCache.m
View File

@ -474,6 +474,10 @@ BOOL ImageDataHasPNGPreffix(NSData *data) {
}
- (void)backgroundCleanDisk {
Class UIApplicationClass = NSClassFromString(@"UIApplication");
if(!UIApplicationClass || ![UIApplicationClass respondsToSelector:@selector(sharedApplication)]) {
return;
}
UIApplication *application = [UIApplication sharedApplication];
__block UIBackgroundTaskIdentifier bgTask = [application beginBackgroundTaskWithExpirationHandler:^{
// Clean up any unfinished task business by marking where you

8
SDWebImage/SDWebImageDownloaderOperation.m
View File

@ -70,7 +70,9 @@
}
#if TARGET_OS_IPHONE && __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_4_0
if ([self shouldContinueWhenAppEntersBackground]) {
Class UIApplicationClass = NSClassFromString(@"UIApplication");
BOOL hasApplication = UIApplicationClass && [UIApplicationClass respondsToSelector:@selector(sharedApplication)];
if (hasApplication && [self shouldContinueWhenAppEntersBackground]) {
__weak __typeof__ (self) wself = self;
self.backgroundTaskId = [[UIApplication sharedApplication] beginBackgroundTaskWithExpirationHandler:^{
__strong __typeof (wself) sself = wself;
@ -122,6 +124,10 @@
}
#if TARGET_OS_IPHONE && __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_4_0
Class UIApplicationClass = NSClassFromString(@"UIApplication");
if(!UIApplicationClass || ![UIApplicationClass respondsToSelector:@selector(sharedApplication)]) {
return;
}
if (self.backgroundTaskId != UIBackgroundTaskInvalid) {
[[UIApplication sharedApplication] endBackgroundTask:self.backgroundTaskId];
self.backgroundTaskId = UIBackgroundTaskInvalid;