单触式5.0.2。为什么在这个简单的Monotouch代码中看到“__NSCFString类的对象自动释放,没有就位”?
运行简单的代码下面我得到这个输出面板:
objc[20283]: Object 0x9c08110 of class __NSCFString autoreleased with no pool in place - just leaking - break on objc_autoreleaseNoPool() to debug
objc[20283]: Object 0x9c07840 of class __NSCFData autoreleased with no pool in place - just leaking - break on objc_autoreleaseNoPool() to debug
哪些NSString的都在这里,为什么漏水?这似乎足以创建一个新的Uri()和一个新的WebClient()objetc。事件处理程序甚至不需要连接。
using System;
using MonoTouch.Foundation;
using MonoTouch.UIKit;
using System.Net;
using System.IO;
namespace DownloadTest
{
[Register ("AppDelegate")]
public partial class AppDelegate : UIApplicationDelegate
{
UIWindow window;
public override bool FinishedLaunching (UIApplication app, NSDictionary options)
{
window = new UIWindow (UIScreen.MainScreen.Bounds);
UIButton btn = UIButton.FromType (UIButtonType.RoundedRect);
btn.Frame = new System.Drawing.RectangleF (40, 40, 100, 30);
btn.TouchUpInside += delegate {
// These two lines seem to caus the leak.
Uri uri = new Uri ("http://silverlightinaction.com/video3.wmv");
WebClient webClient = new WebClient();
// This line does not matter, the info about the leaking NSString alsp appears without an event being attached.
webClient.OpenReadAsync (uri);
};
window.AddSubview (btn);
window.MakeKeyAndVisible();
return true;
}
void HandleWebClientOpenReadCompleted (object sender, OpenReadCompletedEventArgs e)
{
using (var pool = new NSAutoreleasePool())
{
using (Stream stream = e.Result)
using (FileStream fileStream = File.OpenWrite(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Personal), "download.bin")))
{
stream.CopyTo (fileStream, 30000);
stream.Close();
fileStream.Close();
}
}
}
}
}
这看起来像http://bugzilla.xamarin.com/show_bug.cgi?id=1999重复,但我们并没有一个完整的测试用例来复制它(你的工作完美:-)。我将把它与这个问题联系起来并追踪下来。谢谢 – poupou
有人对我的痛苦感到高兴!大!请给我免费的圣诞节蛋糕! :-) – Krumelur