Holy cr*p ! I am very sorry for wasting everybodys (and especially Richrds) time. The crash that i experienced from using the UIActivityController did *not* derive from uiview beeing nil.
In fact after Richard was so sure of his thing i used qDebug() instead of relying on Xcode 6 debugger. And, voila: uiview AND rootcontroller were displayed as "nil" in the Xcode debugger but they were != 0, in favt they were perfectly fine like with Xcode 5 & iOS7 ! And as the UIActivityController changed a bit for iOS8 & iPads THAT was my problem leading to a crash where i suspected the uiview/rootcontroller beeing nil was causing the crash. JFYI, THIS was my real problem: http://stackoverflow.com/questions/25644054/uiactivityviewcontroller-crashing-on-ios8-ipads I am so sorry, i shouldn't trust ANY version of Xcode and my sorry brain :-) A "Hooray" to console debugging :-) Nils Am 25.09.2014 14:45, schrieb Gustavsen Richard: > Hmm. I tested getting the UIView from QQuickWindow in my own app, and it > works here with Qt-5.3. Check if the window you get is a top level window > (QWindow::isTopLevel()). Otherwise, follow parent to the top level before > getting the view. If that doesn't work out, check if you can trim down your > example and post a bug report so we can take a look at it. > > -Richard > ________________________________________ > Fra: interest-bounces+richard.gustavsen=digia....@qt-project.org > [interest-bounces+richard.gustavsen=digia....@qt-project.org] på vegne > av Nils Heidorn [nils_heid...@gmx.de] > Sendt: 25. september 2014 11:28 > Til: interest@qt-project.org > Emne: Re: [Interest] iOS8: Qt 5.3.2 / QML , cannot get UIView from > QQuickWindow anymore > > Hi Richard, > sadly the iOS version does matter. > Maybe i explained it wrong. > The lines i posted work perfectly well on iOS6 & 7. > But in iOS8 the uiview is "nil". > ( window() still delivers a valid QQuickWindow, so thats okay ) > > I AM mixing Qt with native API as is needed for several tasks. > The lines are a near 100% copy of Qt sample code to get hold of the > native API root viewcontroller. > > In a broader perspective, what i have to do using native API is to share > an image (to Facebook / Twitter / Picasa / Camera Roll ....). > And for that you have to add some ".mm" files and to SHOW the share > dialog you have to animate it over the root viewcontroller. > And THAT is what i have to retrieve somehow. > > But thats probably too much Detail. > The core is: > "QGuiApplication::platformNativeInterface()->nativeResourceForWindow" > does not seem to work anymore given the same input parameters as in iOS6 > / 7 :-( > > I tried your casting from winId() to uiview but that does not result in > a valid uiview, accessing it in any way crashes the app. > > Please let me know if i am not understanding your explanation and sorry > for my English, i am not a native english speaker... > > Nils > > > Am 25.09.2014 11:04, schrieb Gustavsen Richard: >> The iOS version should not matter in this case (with respect to how this is >> implemented in Qt). But since you try to get the view, you are mixing Qt >> with native APIs. Do you call UIApplicationMain yourself? Perhaps you try to >> grab the view at a point before the window is fully created? You can check >> if reinterpret_cast<UIView *>(window()->winId()) returns the view. Otherwise >> you must be doing something very strange... >> >> -Richard >> ________________________________________ >> Fra: interest-bounces+richard.gustavsen=digia....@qt-project.org >> [interest-bounces+richard.gustavsen=digia....@qt-project.org] på vegne >> av Nils Heidorn [nils_heid...@gmx.de] >> Sendt: 25. september 2014 09:43 >> Til: interest@qt-project.org >> Emne: [Interest] iOS8: Qt 5.3.2 / QML , cannot get UIView from QQuickWindow >> anymore >> >> Hi ! >> >> I got a problem since upgrading my iPad to iOS 8 (had to, customer wants >> me to continue developing on iOS8 NOW). >> >> On iOS 7.x i was used to get the current uiview like this: >> >> UIView *view = static_cast<UIView >> *>(QGuiApplication::platformNativeInterface()->nativeResourceForWindow("uiview", >> window())); >> >> >> or if i want to have it “ARC safe”: >> >> UIView *view = (__bridge UIView *)reinterpret_cast<void >> *>(QGuiApplication::platformNativeInterface()->nativeResourceForWindow("uiview", >> window())); >> >> >> But on iOS8 this results in “view = nil” :-( >> >> I need the uiview in order to get the UIViewController (as most will): >> >> UIViewController *qtController = [[view window] rootViewController]; >> >> >> Sooo, do you know a way to get the uiview (or better the >> UIViewController) on iOS 8 ? >> >> Greetings, >> >> Nils >> >> >> _______________________________________________ >> Interest mailing list >> Interest@qt-project.org >> http://lists.qt-project.org/mailman/listinfo/interest > _______________________________________________ > Interest mailing list > Interest@qt-project.org > http://lists.qt-project.org/mailman/listinfo/interest _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
