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  • Android: Programmatically move between images in Gallery widget

    - by bdls
    I'd like to programmatically move between images in the Gallery widget, with animation. I can change the currently displaying image using the setSelection(int position) method, however that does not animate. Then there's setSelection(int position, bool animate) but the extra boolean on the end there doesn't appear to do anything. In the source of Gallery it appears that it can handle DPAD key-presses, so a work-around I thought of was to fake the key-presses. Eg. dispatchKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_LEFT)) However I can't get this working for some reason. Anyone tried this? I notice three of the widget's methods I'd love to use moveNext(), movePrevious() and scrollToChild() are all private and unusable. Does anyone know how I might be able to do this?

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  • onListItemClick and CheckedTextView not respoding

    - by rayman
    Hi, i got ListActivity, each item has 2 textviews image and CheckedTextView. i am trying to implement simple multichoiselist... i have two problems: 1. @Override protected void onListItemClick(android.widget.ListView l, View v, int position, long id) { ... } doesnt respond at all ive tried it with the debugger and when i press on any list item it doesnt stop there. and ive tried all kind of things (like focusable:false) two:. i cant toggle the CheckedTextView anyhow. here is my xml: <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="100sp" android:focusable="false" android:focusableInTouchMode="false"> android:padding="6dip"> <ImageView android:layout_width="wrap_content" android:layout_height="fill_parent" android:src="@drawable/icon" android:id="@drawable/icon" android:layout_marginLeft="6dip" android:focusable="false" android:focusableInTouchMode="false"> </ImageView> <LinearLayout android:id="@+id/LinearLayout01" android:orientation="vertical" android:layout_width="1sp" android:layout_height="fill_parent" android:layout_weight="1" android:focusable="false" android:focusableInTouchMode="false"> <TextView android:id="@+id/toptext" android:layout_weight="1" android:gravity="center_vertical" android:text="OrderNum" android:singleLine="true" android:layout_height="0dp" android:layout_width="wrap_content" android:focusable="false" android:focusableInTouchMode="false"> </TextView> <TextView android:id="@+id/bottomtext" android:layout_height="wrap_content" android:layout_width="wrap_content" android:focusable="false" android:focusableInTouchMode="false" android:text="TweetMsg"> </TextView> <TextView android:id="@+id/twittLocation" android:layout_weight="1" android:text="location" android:singleLine="true" android:layout_width="fill_parent" android:layout_height="0dip" android:focusable="false" android:focusableInTouchMode="false"> </TextView> <TextView android:layout_weight="1" android:id="@+id/twittLocationlink" android:text="locationlink" android:gravity="fill_horizontal" android:layout_width="fill_parent" android:layout_height="0dip" android:focusable="false" android:focusableInTouchMode="false"> </TextView> </LinearLayout> <CheckedTextView android:id="@android:id/text1" android:text="Delete" android:layout_width="wrap_content" android:layout_marginRight="2dp" android:layout_height="fill_parent" android:checkMark="?android:attr/listChoiceIndicatorMultiple" android:focusable="false"></CheckedTextView> </LinearLayout> any idea what's the problem? thanks.

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  • Optimized Image Loading in a UIScrollView

    - by Michael Gaylord
    I have a UIScrollView that has a set of images loaded side-by-side inside it. You can see an example of my app here: http://www.42restaurants.com. My problem comes in with memory usage. I want to lazy load the images as they are about to appear on the screen and unload images that aren't on screen. As you can see in the code I work out at a minimum which image I need to load and then assign the loading portion to an NSOperation and place it on an NSOperationQueue. Everything works great apart from a jerky scrolling experience. I don't know if anyone has any ideas as to how I can make this even more optimized, so that the loading time of each image is minimized or so that the scrolling is less jerky. - (void)scrollViewDidScroll:(UIScrollView *)scrollView{ [self manageThumbs]; } - (void) manageThumbs{ int centerIndex = [self centerThumbIndex]; if(lastCenterIndex == centerIndex){ return; } if(centerIndex >= totalThumbs){ return; } NSRange unloadRange; NSRange loadRange; int totalChange = lastCenterIndex - centerIndex; if(totalChange > 0){ //scrolling backwards loadRange.length = fabsf(totalChange); loadRange.location = centerIndex - 5; unloadRange.length = fabsf(totalChange); unloadRange.location = centerIndex + 6; }else if(totalChange < 0){ //scrolling forwards unloadRange.length = fabsf(totalChange); unloadRange.location = centerIndex - 6; loadRange.length = fabsf(totalChange); loadRange.location = centerIndex + 5; } [self unloadImages:unloadRange]; [self loadImages:loadRange]; lastCenterIndex = centerIndex; return; } - (void) unloadImages:(NSRange)range{ UIScrollView *scrollView = (UIScrollView *)[[self.view subviews] objectAtIndex:0]; for(int i = 0; i < range.length && range.location + i < [scrollView.subviews count]; i++){ UIView *subview = [scrollView.subviews objectAtIndex:(range.location + i)]; if(subview != nil && [subview isKindOfClass:[ThumbnailView class]]){ ThumbnailView *thumbView = (ThumbnailView *)subview; if(thumbView.loaded){ UnloadImageOperation *unloadOperation = [[UnloadImageOperation alloc] initWithOperableImage:thumbView]; [queue addOperation:unloadOperation]; [unloadOperation release]; } } } } - (void) loadImages:(NSRange)range{ UIScrollView *scrollView = (UIScrollView *)[[self.view subviews] objectAtIndex:0]; for(int i = 0; i < range.length && range.location + i < [scrollView.subviews count]; i++){ UIView *subview = [scrollView.subviews objectAtIndex:(range.location + i)]; if(subview != nil && [subview isKindOfClass:[ThumbnailView class]]){ ThumbnailView *thumbView = (ThumbnailView *)subview; if(!thumbView.loaded){ LoadImageOperation *loadOperation = [[LoadImageOperation alloc] initWithOperableImage:thumbView]; [queue addOperation:loadOperation]; [loadOperation release]; } } } } EDIT: Thanks for the really great responses. Here is my NSOperation code and ThumbnailView code. I tried a couple of things over the weekend but I only managed to improve performance by suspending the operation queue during scrolling and resuming it when scrolling is finished. Here are my code snippets: //In the init method queue = [[NSOperationQueue alloc] init]; [queue setMaxConcurrentOperationCount:4]; //In the thumbnail view the loadImage and unloadImage methods - (void) loadImage{ if(!loaded){ NSString *filename = [NSString stringWithFormat:@"%03d-cover-front", recipe.identifier, recipe.identifier]; NSString *directory = [NSString stringWithFormat:@"RestaurantContent/%03d", recipe.identifier]; NSString *path = [[NSBundle mainBundle] pathForResource:filename ofType:@"png" inDirectory:directory]; UIImage *image = [UIImage imageWithContentsOfFile:path]; imageView = [[ImageView alloc] initWithImage:image andFrame:CGRectMake(0.0f, 0.0f, 176.0f, 262.0f)]; [self addSubview:imageView]; [self sendSubviewToBack:imageView]; [imageView release]; loaded = YES; } } - (void) unloadImage{ if(loaded){ [imageView removeFromSuperview]; imageView = nil; loaded = NO; } } Then my load and unload operations: - (id) initWithOperableImage:(id<OperableImage>) anOperableImage{ self = [super init]; if (self != nil) { self.image = anOperableImage; } return self; } //This is the main method in the load image operation - (void)main { [image loadImage]; } //This is the main method in the unload image operation - (void)main { [image unloadImage]; }

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  • Android: How can I validate EditText input?

    - by Stefan
    I need to do form validation on a series of EditTexts. I'm using OnFocusChangeListeners to trigger the validation, but this doesn't behave as desired for the final EditText. If I click on the "Done" button while typing into the final EditText then the InputMethod is disconnected, but technically focus is never lost on the EditText (and so validation never occurs). What's the best solution? Should I be monitoring when the InputMethod unbinds from each EditText rather than when focus changes? If so, how?

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  • Autorotate UINavigationController based Application in IPhoneOS 3.0

    - by Shoaibi
    I have an application which have code like: window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]]; // UIWindow *window; viewController = [TopicsViewController new]; //TopicsViewController *viewController; //This is a UITableViewController navigationController = [UINavigationController new]; // UINavigationController *navigationController; UIImageView *background = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"background.png"]]; [self.navigationController.view addSubview:background]; [self.navigationController.view sendSubviewToBack:background]; [navigationController pushViewController:viewController animated:YES]; [window addSubview:[navigationController view]]; [window makeKeyAndVisible]; Basically i am using UINavigationController and then push UITableViewController or sometime a UIViewController. UIViewController contain elements such as UITextView, UIImage, UIScrollView. Problem is i have been trying to make this application respond to iphone rotation e.g. when held in landscape, application should switch to landscape and vice versa, but nothing works so far.

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  • MPMoviePlayerController & .m3u8 playlist

    - by Thierryb
    Hello, I would like to use a .m3u8 playlist containing remote mp4 files with MPMoviePlayerController, did you success with this ? Does the .m3u8 must contain .ts file ?If not what is the purpose of .ts ? Does next / previous buttons will be enable once the playlist be loaded ? If not, what is the purpose of these buttons ? And last question, do you have a .m3u8 sample file with remote mp4 file to test ? Thanks a lot for your help. Thierry

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  • Android layout with 2 evenly spaced Buttons

    - by Rpond
    I have this layout that works correctly, a relative layout with a text view and two buttons spaced evenly below it. <RelativeLayout android:id="@+id/entrypopup" android:layout_width="fill_parent" android:layout_height="wrap_content" android:padding="5px" android:visibility="gone" android:layout_below="@+id/ad" android:background="#80000000"> <TextView android:id="@+id/title" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="Entry Popup..." android:textColor="#ffffffff" android:textSize="20sp" /> <TableLayout android:id="@+id/TableLayout01" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@id/title"> <TableRow android:layout_weight="1"> <Button android:id="@+id/buttonVisit" android:text="View" android:layout_height="fill_parent" android:layout_width="0dip" android:layout_weight="1"/> <Button android:id="@+id/buttonCancel" android:text="Cancel" android:layout_width="0dip" android:layout_weight="1" android:layout_height="fill_parent"/> </TableRow> </TableLayout> </RelativeLayout> But running layoutopt it says that "this TableRow layout or its TableLayout parent is possible useless". Is there a way to do this layout then without the tables?

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  • Suppressing line specific XCode compiler warnings

    - by MrHen
    Similar to Ben Gottlieb's question, I have a handful of deprecated calls that are bugging me. Is there a way to suppress warnings by line? For instance: if([[UIApplication sharedApplication] respondsToSelector:@selector(setStatusBarHidden:withAnimation:)]) { [[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:UIStatusBarAnimationSlide]; } else { [[UIApplication sharedApplication] setStatusBarHidden:YES animated:NO]; //causes deprecation warning } All I care about is that line. I don't want to turn off all deprecation warnings. I would also rather not do something like suppress specific warnings by file. There have been a few other circumstances where I wanted to flag a specific line as okay even though the compiler generates a warning. I essentially want to let my team know that the problem has been handled and stop getting bugged about the same line over and over.

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  • UISplitViewController and complex view heirarchy

    - by Jasconius
    I'm doing an iPad tech demo and I'm running into a serious technical problem. I have an app concept that leverages UISplitViewController, but NOT as the primary controller for the entire app. The app flow could be described roughly as this: Home screen (UIViewController) List-Detail "Catalog" (UISplitViewController) Super Detail Screen (UIViewController but could conceivable also be a child of SplitView). The problem is in the flow between Home and Catalog. Once a UISplitViewController view is added to the UIWindow, it starts to throw hissy fits. The problem can be summarized at this: When a UISplitView generates a popover view, it appears to then be latched to its parent view. Upon removing the UISplitView from the UIWindow subviews, you will get a CoreGraphics exception and the view will fail to be removed. When adding other views (presumably in this case, the home screen to which you are returning), they do not autorotate, instead, the UISplitView, which has failed to be removed due to a CG exception, continues to respond to the rotation instead, causing horrible rendering bugs that can't be just "dealt with". At this point, adding any views, even re-adding the SplitView, causes a cascade of render bugs. I then tried simply to leave the SplitView ever present as the "bottom" view, and keeping adding and removing the Home Screen from on top of it, but this fails as SplitView dominates the Orientation change calls, and Home Screen will not rotate, even if you call [homeScreen becomeFirstResponder] You can't put SplitView into a hierarchy like UINavigationController, you will get an outright runtime error, so that option is off the table. Modals just look bad and are discourages anyway. My presumption at this moment is that the only proper way to deal with this problem is so somehow "disarm" UISplitViewController so that it can be removed from its parent view without throwing an unhandled exception, but I have no idea how. If you want to see an app that does exactly what I need to do, check out GILT Groupe in the iPad app store. They pulled it off, but they seem to have programmed an entire custom view transition set. Help would be greatly appreciated.

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  • Sorting a multidimensional array in objective-c

    - by Zen_silence
    Hello, I'm trying to sort a multidimensional array in objective-c i know that i can sort a single dimensional array using the line of code below: NSArray *sortedArray = [someArray sortedArrayUsingSelector:@selector(caseInsensitiveCompare:)]; I can't seem to figure out how to sort a 2D array like the one below: ( ("SOME_URL", "SOME_STORY_TITLE", "SOME_CATEGORY"), ("SOME_URL", "SOME_STORY_TITLE", "SOME_CATEGORY"), ("SOME_URL", "SOME_STORY_TITLE", "SOME_CATEGORY") ); If someone could provide me code that would sort the array by SOME_CATEGORY it would be of great help to me. Thanks, Zen_Silence

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  • Resizing an image with stretchableImageWithLeftCapWidth

    - by Stephan Burlot
    I'm trying to resize an image using stretchableImageWithLeftCapWidth: it works on the simulator, but on the device, vertical green bars appears. I've tried to use imageNamed, imageWithContentOfFile and imageWithData lo load the image, it doesnt change. UIImage *bottomImage = [[UIImage imageWithData: [NSData dataWithContentsOfFile: [NSString stringWithFormat:@"%@/bottom_part.png", [[NSBundle mainBundle] resourcePath]]]] stretchableImageWithLeftCapWidth:27 topCapHeight:9]; UIImageView *bottomView = [[UIImageView alloc] initWithFrame:CGRectMake(10, 200+73, 100, 73)]; [self.view addSubview:bottomView]; UIGraphicsBeginImageContext(CGSizeMake(100, 73)); [bottomImage drawInRect:CGRectMake(0, 0, 100, 73)]; UIImage *bottomResizedImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); bottomView.image = bottomResizedImage; See the result: the green bars shouldn't be there, they dont appear on the simulator.

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  • How to show button ‘Done’ on number pad on iPhone OS 4?

    - by Will Harris
    I'd like to add a Done button to the iPhone number pad keyboard. There's even a handy space at the bottom left for just such a button. Previously, I was using a similar trick to those described in Question 584538 and Luzian Scherrer's excellent blog post, but that stopped working in iOS 4. I can do it by creating a custom inputView, but I'd prefer to extend Apple's keyboard instead of writing my own. Is there a new way to add a view to the standard keyboard? Has someone published an OSS inputView for this? Is there another way?

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  • Android MediaPlayer ignores it's internal volume when the system volume changes

    - by Daniel Flower
    Hi, here is my situation: I have a media player playing music in an Android application. I've found that with certain headphones, the volume is much too loud even when the volume is set to it's lowest setting. As a result, I want to change the volume of the music for all volume levels to be 10% of what it normally is (actually, this value is user-defined of course). The following works perfectly: mediaPlayer.setVolume(0.1f, 0.1f); The volume of the music is now at a good level for listening. However, if the user now changes the volume using the volume rocker (thus changing the music stream volume), the media player changes the volume as expected, but it also seems to reset the 'setVolume' parameters to 1.0, causing a massive volume change. Setting the volume back to 0.1 sets the volume to how it should be (which is 10% of the current music stream volume). To quote the Android docs for the MediaPlayer.setVolume method: This API is recommended for balancing the output of audio streams within an application How can you do this if it gets reset to 1.0 each time the system volume changes? Any help muchly appreciated. Thanks.

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  • request for member view in something not a structure or union

    - by james
    Hi I have this error when i build my application iphone: request for member view in something not a structure or union on [CommuneSlider.view removeFromSuperview]; the code: - (void) CommuneSelected { CommuneDetailsViewController *com = [[CommuneDetailsViewController alloc] initWithNibName:@"CommuneDetailsViewController" bundle:nil]; UINavigationController *navig = [[UINavigationController alloc] initWithRootViewController:com]; [self setCommuneDetails:(CommuneDetailsViewController *) navig]; [navig setNavigationBarHidden:YES]; [com release]; [navig release]; [UIView beginAnimations:nil context:NULL]; [UIView setAnimationDuration:.8]; [UIView setAnimationTransition:UIViewAnimationTransitionCurlUp forView:window cache:YES]; [CommuneSlider.view removeFromSuperview]; [self.window addSubview:[CommuneDetails view]]; [UIView commitAnimations]; } need HELP

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  • UIAlertView close the App

    - by Marco
    Hello Users, in my project my app first tries to connect to the internet, but now i have to check if there is an connection available! so i made an if, else within an UIAlertView in the else part! but how can i close the whole app on a click on the following button? UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Keine Internetverbindung" message:@"Es konnte keine Verbindung zu www.sip.de hergestellt werden!" delegate:nil cancelButtonTitle:@"Schliessen" otherButtonTitles:nil]; thank you all for helping beforehand greets Marco

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  • "Conversion to Dalvik format failed with error 1" on external Jar

    - by michel
    In my Android appliction in eclipse I get the following error: UNEXPECTED TOP-LEVEL EXCEPTION: java.lang.IllegalArgumentException: already added: Lorg/xmlpull/v1/XmlPullParser; .... Conversion to Dalvik format failed with error 1 this error only appears if I add a specific external Jar to my project. I search long time to the right solution but all possible solutions don't work. I even tried to change to android 1.6 instead of 1.5(current version I use)

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  • overridden three20 TTDefaultStyleSheet style not working

    - by funkadelic
    hi, i recently got three20 integrated into my app and am trying to override the default toolbar color in TTWebController. In TTWebController.m:118 I see that this is setting the toolbar's tintColor: _toolbar.tintColor = TTSTYLEVAR(toolbarTintColor); So I created my own stylesheet that subclasses TTDefaultStyleSheet and overrides toolbarTintColor FooStyleSheet.h: #import <Three20Style/Three20Style.h> #import <Three20Style/TTStyleSheet.h> #import <Three20Style/TTDefaultStyleSheet.h> @interface FooStyleSheet : TTDefaultStyleSheet @property (nonatomic, readonly) UIColor* toolbarTintColor; @end FooStyleSheet.m: #import "FooStyleSheet.h" @implementation RaptrStyleSheet - (UIColor*)toolbarTintColor { return RGBCOLOR(0, 0, 0); // should override TTDefaultStyleSheet } @end and in my application:didFinishLaunchingWithOptions: i set my default stylesheet [TTStyleSheet setGlobalStyleSheet:[[[FooStyleSheet alloc] init] autorelease]]; but when I view the TTWebController, it doesn't inherit my tintColor. If I edit TTDefaultStyleSheet.m directly: - (UIColor*)toolbarTintColor { return [UIColor blackColor]; } it works as expected. Is there something I am overlooking that is preventing my style to be picked up? thanks, -norm

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  • MPMoviePlayerController problems on iPad

    - by Infinity
    Hello guys! I'm trying to use the MPMoviePlayerController class on the iPad. here's my code: multimediaPlayer = [[MPMoviePlayerController alloc] initWithContentURL:[NSURL fileURLWithPath:path]]; multimediaPlayer.movieControlMode = MPMovieControlModeDefault; [multimediaPlayer play]; and this works very well on the iPhone but it don't want to run on the iPad. I hear the sound of the video, but the movie doesn't playing. Why it can be this problem?

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  • dismissModalViewControllerAnimated makes my app crash :(

    - by Koning Baard XIV
    I'm creating an iPad app, and I have two classes: NWRootViewController : UITableViewController and UINewFeedViewController : UIViewController. In NWRootViewController I have an UIBarButtonItem, which, when tapped, pops up a modal view controller called NWNewFeedViewController: // THIS CODE IS IN NWROOTVIEWCONTROLLER.M // New Feed -(IBAction)showNewFeedViewAction:(id)sender { [newFeedViewController setModalPresentationStyle:UIModalPresentationFormSheet]; [self presentModalViewController:newFeedViewController animated:YES]; } This works fine. However, in the NWNewFeedViewController's view, I have another UIBarButtonItem which does this when tapped: // THIS CODE IS IN NWNEWFEEDCONTROLLER.M // Buttons -(IBAction)cancelAction:(id)sender { [self dismissModalViewControllerAnimated:YES]; } When I tap this button, the app crashes with: 2010-04-10 12:39:46.703 News[580:207] *** -[NWDetailViewController cancelAction:]: unrecognized selector sent to instance 0x4741110 2010-04-10 12:39:46.705 News[580:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[NWDetailViewController cancelAction:]: unrecognized selector sent to instance 0x4741110' 2010-04-10 12:39:46.705 News[580:207] Stack: ( 40878667, 2458187017, 41150267, 40613142, 40609810, 2776006, 4876265, 2776006, 3246293, 3255055, 3250242, 2899304, 2793965, 2825287, 49238396, 40419388, 40415304, 49232029, 49232226, 2817505 ) Can anyone help me? Thanks

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  • How to implement a UINavigationController to a standard UIView

    - by tarnfeld
    This is the structure of my application currently: UIWindow UIViewController (Root View Controller) UINavigationController UITableView UIViewController (PresentModalViewControllerAnimated:YES) UITableView This is how I want it to be: UIWindow UIViewController (Root View Controller) UINavigationController UITableView UIViewController (PresentModalViewControllerAnimated:YES) UINavigationController UITableView I have a view that slides up and I want that view to have its own UINavigationController. It's for the app settings so I want to have nested options. Any ideas how to do this? The application type was a Navigation app to start with which is where the Root View Controller's UINavigationController came from.

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  • Android - Help with ANR and traces.txt

    - by Tori
    My app crashes with an ANR while scrolling in a spinner. I implemented many spinners in different apps and this is the first time i get this ANR. I would appreciate any help in deciphering the traces.txt DALVIK THREADS: "main" prio=5 tid=3 NATIVE | group="main" sCount=1 dsCount=0 s=0 obj=0x40018e70 | sysTid=896 nice=0 sched=0/0 handle=-1097417572 at android.os.BinderProxy.transact(Native Method) at android.app.ActivityManagerProxy.handleApplicationError(ActivityManagerNative.java:2103) at com.android.internal.os.RuntimeInit.crash(RuntimeInit.java:302) at com.android.internal.os.RuntimeInit$UncaughtHandler.uncaughtException(RuntimeInit.java:75) at java.lang.ThreadGroup.uncaughtException(ThreadGroup.java:887) at java.lang.ThreadGroup.uncaughtException(ThreadGroup.java:884) at dalvik.system.NativeStart.main(Native Method)

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