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  • ListView: convertView / holder getting confused

    - by Steve H
    I'm working with a ListView, trying to get the convertView / referenceHolder optimisation to work properly but it's giving me trouble. (This is the system where you store the R.id.xxx pointers in as a tag for each View to avoid having to call findViewById). I have a ListView populated with simple rows of an ImageView and some text, but the ImageView can be formatted either for portrait-sized images (tall and narrow) or landscape-sized images (short and wide). It's adjusting this formatting for each row which isn't working as I had hoped. The basic system is that to begin with, it inflates the layout for each row and sets the ImageView's settings based on the data, and includes an int denoting the orientation in the tag containing the R.id.xxx values. Then when it starts reusing convertViews, it checks this saved orientation against the orientation of the new row. The theory then is that if the orientation is the same, then the ImageView should already be set up correctly. If it isn't, then it sets the parameters for the ImageView as appropriate and updates the tag. However, I found that it was somehow getting confused; sometimes the tag would get out of sync with the orientation of the ImageView. For example, the tag would still say portrait, but the actual ImageView would still be in landscape layout. I couldn't find a pattern to how or when this happened; it wasn't consistent by orientation, position in the list or speed of scrolling. I can solve the problem by simply removing the check about convertView's orientation and simply always set the ImageView's parameters, but that seems to defeat the purpose of this optimisation. Can anyone see what I've done wrong in the code below? static LinearLayout.LayoutParams layoutParams; (...) public View getView(int position, View convertView, ViewGroup parent){ ReferenceHolder holder; if (convertView == null){ convertView = inflater.inflate(R.layout.pick_image_row, null); holder = new ReferenceHolder(); holder.getIdsAndSetTag(convertView, position); if (data[position][ORIENTATION] == LANDSCAPE) { // Layout defaults to portrait settings, so ImageView size needs adjusting. // layoutParams is modified here, with specific values for width, height, margins etc holder.image.setLayoutParams(layoutParams); } holder.orientation = data[position][ORIENTATION]; } else { holder = (ReferenceHolder) convertView.getTag(); if (holder.orientation != data[position][ORIENTATION]){ //This is the key if statement for my question switch (image[position][ORIENTATION]) { case PORTRAIT: // layoutParams is reset to the Portrait settings holder.orientation = data[position][ORIENTATION]; break; case LANDSCAPE: // layoutParams is reset to the Landscape settings holder.orientation = data[position][ORIENTATION]; break; } holder.image.setLayoutParams(layoutParams); } } // and the row's image and text is set here, using holder.image.xxx // and holder.text.xxx return convertView; } static class ReferenceHolder { ImageView image; TextView text; int orientation; void getIdsAndSetTag(View v, int position){ image = (ImageView) v.findViewById(R.id.pickImageImage); text = (TextView) v.findViewById(R.id.pickImageText); orientation = data[position][ORIENTATION]; v.setTag(this); } } Thanks!

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  • UIScrollView with pages enabled and device rotation/orientation changes (MADNESS)

    - by jbrennan
    I'm having a hard time getting this right. I've got a UIScrollView, with paging enabled. It is managed by a view controller (MainViewController) and each page is managed by a PageViewController, its view added as a subview of the scrollView at the proper offset. Scrolling is left-right, for standard orientation iPhone app. Works well. Basically exactly like the sample provided by Apple and also like the Weather app provided with the iPhone. However, when I try to support other orientations, things don't work very well. I've supported every orientation in both MainViewController and PageViewController with this method: - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { return YES; } However, when I rotate the device, my pages become quite skewed, and there are lots of drawing glitches, especially if only some of the pages have been loaded, then I rotate, then scroll more, etc... Very messy. I've told my views to support auto-resizing with theView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight; But to no avail. It seems to just stretch and distort my views. In my MainViewController, I added this line in an attempt to resize all my pages' views: - (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation { self.scrollView.contentSize = CGSizeMake(self.scrollView.frame.size.width * ([self.viewControllers count]), self.scrollView.frame.size.height); for (int i = 0; i < [self.viewControllers count]; i++) { PageViewController *controller = [self.viewControllers objectAtIndex:i]; if ((NSNull *)controller == [NSNull null]) continue; NSLog(@"Changing frame: %d", i); CGRect frame = self.scrollView.frame; frame.origin.x = frame.size.width * i; frame.origin.y = 0; controller.view.frame = frame; } } But it didn't help too much (because I lazily load the views, so not all of them are necessarily loaded when this executes). Is there any way to solve this problem?

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  • iPad. UIBarButtonItem has an undocumented view of type UIToolbarTextButton. Huh?

    - by dugla
    I have an iPad app where I have a view controller that is the UIGestureRecognizerDelegate for a number of UIGestureRecognizers. I have implemented the following method of UIGestureRecognizerDelegate: - (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch { // Double tapping anywhere on the screen hides/shows the toolbar if ([gestureRecognizer isKindOfClass:[UITapGestureRecognizer class]] == YES) { if (touch.tapCount == 2) { self.toolbar.hidden = self.toolbar.isHidden ? NO : YES; } // if (touch.tapCount == 2) } // if ([gestureRecognizer isKindOfClass:[UITapGestureRecognizer class]] == YES) // All gestures are ignored unless they happen on the fullscreen EAGLView if ([touch.view isKindOfClass:[EAGLView class]] == NO) { return NO; } // if ([touch.view isKindOfClass:[EAGLView class]] == NO) return YES; } My setup is a fullscreen EAGLView with a UIToolbar atop the EAGLView. There is a UIBarButtonItem on the toolbar. The idea here is that double-tapping anywhere toggles the appearance of the toolbar. All other gestures must occur on the EAGLView. My problem is that taps directly on the UIBarButtonItem show touch.view to be the UIView subclass UIToolbarTextButton which is undocumented and can't be introspected. Huh? Can someone suggest a work around, preferably that uses introspective goodness of some form? Thanks, Doug Thanks, Doug

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  • UIKeyBoard resize on orientation change to landscape

    - by Dave
    This is very rookie question. I have a UIToolBar at the bottom which is supposed to animatedly move up and down with key board when the UIKeyBoard is displayed. I got that working with the help of UIKeyBoard Notifications. The view we are talking about has split view enabled. When device orientation is landscape, both the views as columns are shown [hope that makes sense]. When key board is shown, i do this CGSize keyBoardSize = [[notificationInfo objectForKey:UIKeyboardFrameEndUserInfoKey]CGRectValue].size; CGRect toolbarFrame= [BottomToolBar frame]; toolbarFrame.origin.y -= keyBoardSize.height; [UIView beginAnimations:nil context:nil]; [UIView setAnimationDuration:0.3]; BottomToolBar .frame = viewFrame; [UIView commitAnimations]; when key board is hiiden i do this toolbarFrame.origin.y += keyBoardSize.height; My Problem is when device orientation changes to landscape, when the key board is visible the bottom tool bar is gone. I see it move up quickly. I am not sure how to fix this. Can anyone help please? Also, is there a way to NOT make the key board span across both the views in the split view?

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  • Only first UIView added view addSubview shows correct orientation

    - by Brian Underwood
    I've got three ViewControllers set up to handle three views. The problem that I'm having is that in the simulator the orientation is LandscapeRight (which is what I want), and the first view shows up correctly in that landscape view, but when I move onto the second and third views, they show up rotated 90 degrees counter-clockwise with the upper-left corner of the view in the lower left corner of the phone's screen. I've been trying to debug this for a few days and the closest that I've gotten to a clue is tracing it the following way: The following is in my app delegate's applicationDidFinishLaunching: NSLog(@"1"); [window addSubview:welcomeController.view]; NSLog(@"2"); [window addSubview:goalController.view]; NSLog(@"3"); [window addSubview:planningController.view]; NSLog(@"4"); [window bringSubviewToFront:welcomeController.view]; NSLog(@"5"); Each of my ViewControllers implement something similar to the following (the only change being the controller's name switched out in the string passed to NSLog): - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { // Return YES for supported orientations NSLog(@"called for WelcomeController"); return (interfaceOrientation == UIInterfaceOrientationLandscapeRight); } With that, I get the following output on the Console: a called for WelcomeController called for WelcomeController called for WelcomeController called for WelcomeController 2 called for GoalController 3 called for PlanningController 4 5 I find it interesting that shouldAutorotateToInterfaceOrientation is called 4 times for the first view that's added, while the other two only get called once. I expect that this is probably because it's got to do some setup at first (and I believe that the simulator starts off in portrait mode, so it's might be calling it while doing the rotation), but I find the correlation a bit suspicious. I've switched the order around so that the addSubview is called for the goalController first and the welcomeController second. In this case, it's the goalController which displays in the correct landscape orientation (it's normally the welcome controller). This would seem to eliminate my XIB files and the ViewControllers themselves. I'm not sure why the first view where addSubview is called is special. I also tried using insertSubview at index 0 with the same results.

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  • Difficulty with apps with a forced landscape orientation

    - by mahboudz
    I have two apps, both of which force the user to use the iPhone in landscape mode, in order to have a wider screen, instead of a taller one. One of the things I have found is that my first view will look fine, but all other views come up with their subviews (UIButtons, UIPicker, UIViews) squeezed to one side or clipped (depending on whether the elements were set to move, resize or stay in the same position as the view size changed). All my views are designed in IB in the landscape orientation. My underlying UIWindow, and everything I can think of has been laid out in landscape orientation. Even my plist file has the UIInterfaceOrientationLandscapeRight flag set. Now, if I load all my views at the same time as my rootview controller, then I have no problems. But if I have views loaded later, they get clipped or squeezed. The only way to get around the problem was to add the following line in my code that flips in a new view: [coming.view setFrame:CGRectMake(0, 0, 480, 300)]; Anyone know why I need to do this? Is it just that the iPhone assumes that loaded views are 300x480 unless a transform gets applied to them? Thanks. ps. This is what the view looks like if I don't call setFrame, as described above: All viewcontrollers that get loaded after the first one will have their screen similarly squeezed down. For some reason the first viewcontroller doesn't have this issue.

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  • iPhone - adding views and landscape orientation

    - by Franz
    I got a problem with Cocoa touch and landscape orientation. I instantiate my view from a .xib; i added in my view controller - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { return interfaceOrientation == UIInterfaceOrientationLandscapeRight; } to only allow landscape orientation. This works find for the first view i add.. if I add a second view however it is rotated again like the landscape view is shown in portrait mode (rotated 90 degree counterclockwise). I really don't know what is going on and can't find a workaround. I even tried to get behind what is happening just adding my view twice: MainMenuViewController* controller = [[MainMenuViewController alloc] initWithNibName:@"MainMenu" bundle:nil]; [window addSubview: controller.view]; MainMenuViewController* controller2 = [[MainMenuViewController alloc] initWithNibName:@"MainMenu" bundle:nil]; [window addSubview: controller2.view]; [window makeKeyAndVisible]; The view of controller is displayed correctly, while the view of controller2 is rotated by 90 degrees. Does anyone have an idea how this can happen? Thanks for your help.

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  • FragmentActivity doesn't see activity in onActivityCreate(), after screen orientation changed

    - by hai bison
    I'm using Android support library v13. There is a strange thing I couldn't understand. When creating new activity, I load fragment as: Main activity layout: ... <FrameLayout android:id="@+id/fragment_1" ... /> In onCreate() of main activity: mFragment = (FragmentActivity) getSupportFragmentManager().findFragmentById(R.id.fragment_1); // if screen orientation changed, no need to create new instance of fragment if (mFragment == null) { mFragment = ...; // create new instance of fragment FragmentTransaction ft = getSupportFragmentManager().beginTransaction(); ft.replace(R.id.fragment_1, mFragment); // because this is called ONCE, we can use this method ft.commitAllowingStateLoss(); } Now, everything works perfectly in emulators 1.5, 1.6 and 2.2. I have a phone 2.2.2. But there is an exception: if the app is running, and screen orientation changed. Inside onActivityCreated(), getActivity() sometimes returns null. This only happens in emulators 1.5/ 1.6/ 2.2. My phone 2.2.2 works very well, I test hundreds of times but never catch that bug. Even other emulators 3.x, 4.x work well too. Unfortunately I don't have phone 1.5/ 1.6/ 2.2. So did you have experience with this? Is that a bug of the support library, or emulators? Could you please help me? Thank you in advance.

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  • Stil facing the problem in Orientation in iphone

    - by aman-gupta
    Hi, In my application I have 15 screens in that i m using UIViewController for all screens and in all screens i m using the below way to call other screen :- AppDelegate *appRefre = (AppDelegate *)[[UIApplication sharedApplication]delegate]; [self.navigationController pushViewController:appRefre.frmReferencesLink animated:YES]; And the below code is activated in all screen for orientation to control the user to switch from one orientation to other mode (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { if (interfaceOrientation == UIInterfaceOrientationPortrait) { return YES; } else { return NO; } } But when i run my application in iPhone device my application gets terminated when i physically rotate my iphone device from UIInterfaceOrientationPortrait to UIInterfaceOrientationPortraitUpsideDown or UIInterfaceOrientationLandscapeLeft,UIInterfaceOrientationLandscapeRight. And One more things is that when my application lauch i used following code for launching my appliaction :- 1) I made a pointer in mydelegate.h file: UINavigationController *navigationController; Then synthesize its property @property(nonatomic,retain)UINavigationController *navigationController 2) In mydelegat.m I Wrote @synthesize navigationController; (void)applicationDidFinishLaunching:(UIApplication *)application { navigationController = [[UINavigationController alloc] initWithRootViewController:DefaultViewLink]; [window addSubview:navigationController.view]; [window makeKeyAndVisible]; } 3) In above point DefaultView is launch first and gets remove from view and then actual my appliaction come into picture. So exactly what i want i want my appliaction to be in portrait mode for all screens i dont want my appliaction will switch to other mode.It remains the same as in portrait mode after rotation to any other mode. Please help me out its very urgent. Thanks in Advance and humble request to help me out

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  • strange MPMoviePlayer problem

    - by Rahul Vyas
    I am using mpmovieplayer in my application.I have a button for playing movie witch has an image of play.But when mpmovieplayer plays movie i can see that button on movie player's overlying controlls like when i pause movie i see my play button instead of movie player's default button.Also i have customized navigation bar and i can see that navbar when movie plays instead of default nav bar.I tried hiding button when playing movie but it didn't worked.Does Someone knows about this issue? also i am having cropping of video issues does someone knows about how to handle video orientation i mean i want full video in any orientation recorded video.Thanks

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  • UIViewController not oreintating. Methods not called

    - by capple
    Greetings, This question does seem to be an ongoing saga in the world of iphone SDK... so heres my contribution... Had two separate projects from the same template... one semi-works, the other not at all... Please let me explain my steps... used this basic GL ES template //iphonedevelopment.blogspot.com/2008/12/opengl-project-template-for-xcode.html had to sort out some of the 'Release' configuration but otherwises has eveything I need to add orientation to a GL ES project. One my first project, did my stuff, then added these methods.... -(BOOL)shouldAutoRotateToInterfaceOrientation ..... -(void)willRotateToInterfaceOrientation .... -(void)didRotateFromInterfaceOrientation .... -(void)willAnimateRotationToInterfaceOrientation .... And understand what they do (or are trying to do in my case), the (BOOL)should... gets called once when the view controller is created, and returns 'YES'. But after that none of the other methods are called! So I started from scratch with a blank template (GL ES one from above)...and added minimum to support auto rotation. But this time none of the methods get called! So I investigated .... //developer.apple.com/iphone/library/qa/qa2010/qa1688.html as it said, I added the GLViewController.view first, then added the GLview as subviews of the application delegate. Nothing! Then found this //www.iphonedevsdk.com/forum/iphone-sdk-development/44993-how-determine-ipad-launch-orientation.html which states to enable orientation notifications [[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications]; and then subsequently disable them in the view controller... makes sense...did it, nothing... I think the notifications might be on by default though, since I didn't need to enable them in the first project, yet it still try to verify a orientation (i.e (BOOL)shouldAutoRotate... )... If any one could help me out it would be greatly appreciated as this issue is driving me insane. Thanks in advance. The code can be found here ... http://rapidshare.com/files/392053688/autoRotation.zip N.B These projects avoid nib/xib resources, would like to keep it that way if possible. P.S iPad device not out where I am so I cannot test on a device yet. Would be nice for it to work on the simulator.

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  • UIAlertView won't rotate to landscape even with applicationDidFinishLaunching call

    - by Joey
    I am trying to use UIAlertView on my landscape right (home button on the right) app but it is showing up in portrait orientation. I have tried putting: [[UIApplication sharedApplication] setStatusBarOrientation: UIInterfaceOrientationLandscapeRight animated: NO ]; in applicationDidFinishLaunching, but it doesn't work. Are there any other usual suspects to what might be causing this? I am setting the orientation through my plist file currently.

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  • Keep only "lock" a single app open in iOS?

    - by CT.
    Is there anyway to "lock" open a single app in iOS? My use case for this is simple. There are many apps and games designed for children. While these applications are appropriate for children, many other applications installed on an iPad are not. But even more so than protecting them from inappropriate content, I would just like to prevent them from leaving the application. They accidentally hit the home button or multi-touch gesture out of the application. I know you can turn gestures off. Developers also have links to their website or other related applications. Kids are constantly exiting the application and then bringing the device to me asking "Can you get me back into the game?" every couple minutes. How can I hand a child an iPad with "Angry Birds" running and make sure only "Angry Birds" runs? Cydia or jailbreak tweaks welcome. Thanks.

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  • Proxy the traffic in http and https from my iPhone/iPad to VirtualBox on my Mac

    - by Nicolas BADIA
    I've got a mac running a Debian VirtualBox which forward the traffic from 8080 on the mac to 80 in the box and from 8443 to 443. The domains with the extension .dev are redirected on the mac to 127.0.0.1 with dnsmasq. The traffic on IP 127.0.0.1 is forwarded from 80 to 8080 and from 443 to 8443 using ipfw. So with this settings, my Debian VirtualBox gets all the traffic of my .dev domains in http or https. What I want is to be able to proxy the traffic of my .dev domains in http and https from my iPad to my Debian VirtualBox on the mac. I've try to setup an HTTP proxy on the ipad but I can only do it for one port (and it's not working with the port 443). Any idea on how I could achieve that ?

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  • Is anyone else having issues with opening app links on iOS6 iPad3?

    - by lindon fox
    Links to ios apps (to the app store) are not working for me on my iPad 3/iOS 6. I thought it was my code causing the problem initially, but then I tried it on an iPhone, and an older iPad 2 and they both worked. I looked into it further and it seems no links are working (that I can find). I have googled, but I have not found anything yet. Is there anyone else having this problem? Example: link - this link will work on my computer and phone, but not on my iPad3 running iOS6 - it will just bring up the app store app showing the main screen.

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  • VIM Window panes changing orientation

    - by Evan Carroll
    How can I go from a formation like this .......................................................... . . . . . . . 3 . . . . . . . . .............................. 1 . . . . . . . . 2 . . . . . . . . . . . .......................................................... to one like this .......................................................... . . . . . 3 . . . . . .......................................................... . . . . . . . . . . 2 . 1 . . . . . . . . . . ..........................................................

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  • Setting up IIS 7.5 for AD Client Certificates for iOS devices

    - by vonsch
    I am working on getting an iPad to auth to an IIS7.5 website using a local certificate mapped to a user in AD. I am not, in any sense of the word, an IIS admin. I essentially need to setup a proof of concept. I believe that this may work, but I just have no idea how to do it. What I have so far is an iPad with a user certificate installed. I have this user certificate added the correlating user account in AD. What I would like is a basic text webpage to load showing the user that it is authenticating. I would like this page to not be viewable unless it is client certificate authenticated. I don't mind doing the legwork, but I really don't know where to begin on the IIS side. Can anyone point me in the right direction?

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  • Detecting iPhone camera orientation

    - by Stephen Petschulat
    I'm getting inconsistent results depending on whether I get the image directly from the camera in the callback or choosing it from the camera roll. In the UIImagePickerControllerDelegate callback method, the UIImage.imageOrientation comes up as UIImageOrientationRight no matter how the photo is taken. When reading it off the Camera Roll, a landscape shot (turned left) comes up UIImageOrientationUp while a portrait shot comes up UIImageOrientationRight. How can I reliably get the camera orientation in both situations?

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