我的iOS应用程序中有一些保留周期.
对于一个特定的viewController,陷入了一个保留周期,我试图让所有代表都变弱.但是当我从模拟器模拟内存警告时,会调用didRecieveMemoryWarning,但不会调用deinit方法.
我想打印/看到在调用didRecieveMemoryWarning时仍然持有它的viewController的所有者.有什么方法可以做到这一点.
我正在尝试在unity3d中为iPhone,iPad和Android创建游戏.相机正在俯视.我创造了一个具有地面纹理的飞机.现在我想放置相机,以便游戏区域在iPhone上获得全屏.假如iphone屏幕的大小是320x480,我将如何计算在Unity 3d环境中将摄像机和飞机放置在何处.
如果viewControllerBeforeViewController viewControllerAfterViewController任一方法返回 nil，则也会调用计数器部分。
这种行为是预期行为吗？无论如何我都可以阻止这件事发生。这就是我试图做的事情。
- (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerBeforeViewController:(UIViewController *)viewController {
if ([viewController isKindOfClass:[QuestionViewController class]]){
QuestionViewController* qvc = (QuestionViewController*)viewController;
CVPQuestion* prevQuestion = [_surveyContext previousQuestion:qvc.question];
return [self questionControllerWithQuestion:prevQuestion];
}
if ([viewController isKindOfClass:[SurveyEndedViewController class]]){
return [self questionControllerWithQuestion:[self.questionList lastObject]];
}
return nil;
}
- (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerAfterViewController:(QuestionViewController *)viewController {
if ([viewController respondsToSelector:@selector(question)]){
CVPQuestion* nextQuestion = [_surveyContext previousQuestion:viewController.question];
if (nextQuestion == nil && ![_surveyContext isAnswered:viewController.question]){
[viewController showToasterWithText:@"Please answer the question to continue"];
}
QuestionViewController* qc = [self questionControllerWithQuestion:[_surveyContext nextQuestion:viewController.question]];
if (!qc){return …我在编译核心数据项目时遇到了三个警告
我没有设置逆,因为对文件对象的任何更改都不会影响照片对象.我甚至不需要从文件对象访问照片对象
Misconfigured Property:
Photos.file should have an inverse
Consistency error:
Photos.file does not have an inverse; this is an advanced setting (no object can be in multiple destinations for a specific relationship)
我没有设置任何操作,因为对Factilities Object的任何更改都不会影响ParentGroup Object.But我需要从Factilities对象访问ParentGroup对象
Consistency error:
Setting the No Action Delete Rule on Facilities.parentGroup is an advanced setting
我可以摆脱它们,还是可以发出这些警告？
我收到了几次内存泄漏.所有代码中都有最后一个位置 - [ASIHTTPRequest somemethod].之前我以为是ASIhtt Library泄漏了内存.但是看起来它可能只是指向创建对象的位置,并且代码中实际上存在泄漏原因.下面是一个内存泄漏堆栈的示例.我需要知道如何解决这些问题.我的方法应该是什么.谢谢
0 CoreFoundation _CFStreamSetClient
1 CoreFoundation CFReadStreamSetClient
// Below are Within code
2 ProductSurvey -[ASIHTTPRequest scheduleReadStream] /Users/Ila/Documents/Developer/Stryker/ProductSurvey/Networking/ASIHTTP/ASIHTTPRequest.m:3716
3 ProductSurvey -[ASIHTTPRequest startRequest] /Users/Ila/Documents/Developer/Stryker/ProductSurvey/Networking/ASIHTTP/ASIHTTPRequest.m:1382
4 ProductSurvey -[ASIHTTPRequest main] /Users/Ila/Documents/Developer/Stryker/ProductSurvey/Networking/ASIHTTP/ASIHTTPRequest.m:955
5 ProductSurvey -[ASIHTTPRequest startSynchronous] /Users/Ila/Documents/Developer/Stryker/ProductSurvey/Networking/ASIHTTP/ASIHTTPRequest.m:802
6 ProductSurvey -[BaseRequest __processRequest:] /Users/Ila/Documents/Developer/Stryker/ProductSurvey/Networking/WebServices/../BaseRequest.m:73
7 ProductSurvey -[BaseRequest request] /Users/Ila/Documents/Developer/Stryker/ProductSurvey/Networking/WebServices/../BaseRequest.m:109
8 ProductSurvey -[EntityRevisionCheckRequest request] /Users/Ila/Documents/Developer/Stryker/ProductSurvey/Networking/WebServices/EntityRevision/EntityRevisionCheckRequest.m:21
9 ProductSurvey +[NetworkUtility revisionForEntityId:] /Users/Ila/Documents/Developer/Stryker/ProductSurvey/Networking/Utilities/NetworkUtility.m:21
10 ProductSurvey -[AbstractEntity(Extension) toJSONForUpdate] /Users/Ila/Documents/Developer/Stryker/ProductSurvey/DataPersistance/Categories/AbstractEntity+Extension.m:65
11 ProductSurvey -[Room(Extension) toJSONForUpdate] /Users/Ila/Documents/Developer/Stryker/ProductSurvey/DataPersistance/Categories/Room+Extension.m:104
12 ProductSurvey -[RoomService push] /Users/Ila/Documents/Developer/Stryker/ProductSurvey/Syncing/Services/RoomService.m:56
13 ProductSurvey +[SyncService pushEntityData:] /Users/Ila/Documents/Developer/Stryker/ProductSurvey/Syncing/SyncService.m:84
14 ProductSurvey +[SyncService pushInOrder:] …