在iOS開發具有拍照功能的APP的時候會出現內存警告黑屏的問題,因此我們判斷當self.presentedViewControlle是UIImagePickerController 類型時,不做內存警告處理。這樣就可以避免這樣的問題。
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
UIViewController *n = self.navigationController;
UIViewController *s = n.tabBarController.selectedViewController;
UIViewController *t = self.navigationController.topViewController;
UIViewController *v = self.presentedViewController;
if(t == self
&& (s == n || !s)
&& ([v isKindOfClass:[UIImagePickerController class]]))
{
NSLog(@"ignore didReceiveMemoryWarning %@",self.description);
return;
}
NSString* systemVersion = [[UIDevice currentDevice] systemVersion];
CGFloat sysVersion = [systemVersion floatValue];
if (sysVersion >= 6.0)
{
if(self.isViewLoaded && !self.view.window){
self.tableView = nil;
self.view = nil;
}
}
}