我有一个启动页面,显示在应用程序启动时,我的客户希望我在x时间内保持可见状态。一切都很好,除非图像从未发布?为什么此ImageView未被释放?
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
NSString *fileLocation = [[NSBundle mainBundle] pathForResource:@"splash_page" ofType:@"png"];
NSData *imageData = [[NSData alloc] initWithContentsOfFile:fileLocation];
UIImage *launchImage = [[UIImage alloc] initWithData:imageData];
[imageData release], imageData = nil;
UIImageView *launchImageView = [[UIImageView alloc] initWithImage:launchImage];
launchImageView.frame = CGRectMake(0,
0,
[[UIScreen mainScreen] bounds].size.width ,
[[UIScreen mainScreen] bounds].size.height);
launchImageView.tag = 121;
[launchImage release], launchImage = nil;
[self.window addSubview:launchImageView];
[launchImageView release], launchImage = nil;
[self.window makeKeyAndVisible];
[self performSelector:@selector(initApp) withObject:nil afterDelay:kInitDelay];
return YES;
}
- (void)initApp
{
[[UIApplication sharedApplication] setStatusBarHidden:NO];
UIImageView *launchImageView = (UIImageView*)[self.window viewWithTag:121];
[launchImageView removeFromSuperview];
RootNavController *navController = [[RootNavController alloc] initRootController];
self.rootNavController = navController;
[self.window addSubview:navController.view];
[navController release], navController = nil;
}
这是我的理解是removeFromSuperview呼吁视图所以这应该被释放但我仍然可以看到在Intruments 524KB的malloc的发布对象分配的工具,我确定是图像。负责任的图书馆= libRIP.A.dylib和负责的调用者ripl_Create。
如果我注释掉启动页面代码并直接启动NavController,我没有那524kb。
任何想法?
如果你注释掉''[self.window addSubview:launchImageView]'行,它是否仍然有524kb?你有没有检查确定'[self.window viewWithTag:121]'实际上是返回图像视图,而不是零由于某种原因? – Anomie 2011-04-23 22:26:20
如果您在模拟器的硬件菜单中执行“模拟内存警告”,内存是否会消失?我认为UIKit可能会缓存它,以备将来使用,直到需要内存 – 2011-04-23 23:10:36
@Anomie如果我注释掉那一行,我仍然有524kb,因为即使我没有将它添加到窗口,我仍然正在初始化它。如果我从设置字符串开始注释掉整个部分,那么524kb不再显示obv。另外我打印出launchImageView的地址初始化后,并在viewWithTag和它指向相同的地址再次得到它之后? – HenryH 2011-04-23 23:20:30