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  • Custom UISwitch & App Store approval

    - by pix0r
    After doing some reading, I've found that you can customize the text and color on a UISwitch control. I'm curious if these methods will cause problems trying to get my app approved and included in the App Store. Sample code taken from iPhone Developer's Cookbook Sample Code: // Custom font, color switchView = [[UICustomSwitch alloc] initWithFrame:CGRectZero]; [switchView setCenter:CGPointMake(160.0f,260.0f)]; [switchView setLeftLabelText: @"Foo"]; [switchView setRightLabelText: @"Bar"]; [[switchView rightLabel] setFont:[UIFont fontWithName:@"Georgia" size:16.0f]]; [[switchView leftLabel] setFont:[UIFont fontWithName:@"Georgia" size:16.0f]]; [[switchView leftLabel] setTextColor:[UIColor yellowColor]];

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  • willAnimateRotationToInterfaceOrientation not firing iphone UIInterfaceOrientation

    - by harekam_taj
    Hello, I have a view inside a tabbarcontroller and navigationcontroller and my willAnimateRotationToInterfaceOrientation method is not firing. I have set the view to be FirstResponder and also shouldAutorotateToInterfaceOrientation returning YES; - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation) interfaceOrientation { return YES; } -(BOOL)canBecomeFirstResponder { return YES; } [self becomeFirstResponder];

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  • UIImagePickerController Causes my app to crash!

    - by Flafla2
    In my app, a user can select an image, change the picture of a UIImageView to the new imge, and save the image to NSUserDefaults using NSKeyedArchiver. When the user selects the image the app immediately crashes! Here is my code - - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info { [picker dismissModalViewControllerAnimated:YES]; if ([[NSUserDefaults standardUserDefaults] integerForKey:@"PictureKey"] == 1) { UIImage *previmage = [info objectForKey:@"UIImagePickerControllerOriginalImage"]; [prevbutton setImage:previmage]; NSData *previmagedata = [NSKeyedArchiver archivedDataWithRootObject:previmage]; [[NSUserDefaults standardUserDefaults] setObject:previmagedata forKey:@"PrevImage"]; } else if ([[NSUserDefaults standardUserDefaults] integerForKey:@"PictureKey"] == 2) { UIImage *nextimage = [info objectForKey:@"UIImagePickerControllerOriginalImage"]; [nextbutton setImage:nextimage]; NSData *nextimagedata = [NSKeyedArchiver archivedDataWithRootObject:nextimage]; [[NSUserDefaults standardUserDefaults] setObject:nextimagedata forKey:@"NextImage"]; }else { UIImage *optionsimage = [info objectForKey:@"UIImagePickerControllerOriginalImage"]; [moreoptionsbutton setImage:optionsimage]; NSData *optimagedata = [NSKeyedArchiver archivedDataWithRootObject:optionsimage]; [[NSUserDefaults standardUserDefaults] setObject:optimagedata forKey:@"OptionsImage"]; } } Thanks in advance!

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  • Alternatives to GameKIt for iPhone to iPhone transfer

    - by Mike
    I am needing to transfer information as an NSData object from one iPhone to another inside an application and was originally planning on using Bluetooth/GameKit, but the data looks like it will be in the neighborhood of 500KB - 1MB in size. I don't think this is going to fly with GameKit (Bluetooth) as it will take forever and it seems like people are having all kinds of issues with GK anyway. I'd prefer the users to not have to be on the same WiFi network to make it work but am running out of options and time so I'd probably be happy with whatever works. What is a reasonable alternative? The simpler the setup the better or something with sample code would be greatly appreciated and preferred. Thanks.

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  • iPhone Foundation - performance implications of mutable and xxxWithCapacity:0

    - by Adam Eberbach
    All of the collection classes have two versions - mutable and immutable, such as NSArray and NSMutableArray. Is the distinction merely to promote careful programming by providing a const collection or is there some performance hit when using a mutable object as opposed to immutable? Similarly each of the collection classes has a method xxxxWithCapacity, like [NSMutableArray arrayWithCapacity:0]. I often use zero as the argument because it seems a better choice than guessing wrongly how many objects might be added. Is there some performance advantage to creating a collection with capacity for enough objects in advance? If not why isn't the function something like + (id)emptyArray?

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  • How to programatically set drawableLeft on Android button?

    - by Frank LoVecchio
    I'm dynamically creating buttons. I styled them using XML first, and I'm trying to take the XML below and make it programattic. <Button android:id="@+id/buttonIdDoesntMatter" android:layout_height="wrap_content" android:layout_width="fill_parent" android:text="buttonName" android:drawableLeft="@drawable/imageWillChange" android:onClick="listener" android:layout_width="fill_parent"> </Button> This is what I have so far. I can do everything but the drawable. linear = (LinearLayout) findViewById(R.id.LinearView); Button button = new Button(this); button.setText("Button"); button.setOnClickListener(listener); button.setLayoutParams( new LayoutParams( android.view.ViewGroup.LayoutParams.FILL_PARENT, android.view.ViewGroup.LayoutParams.WRAP_CONTENT ) ); linear.addView(button);

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  • pushViewController causes memory leak

    - by hookjd
    The Leaks application tells me that the following function is causing a memory leak and I can't figure out why. -(void)viewGameList { GameListController *gameListViewController = [[GameListController alloc] initWithNibName:@"GameListController" bundle:nil]; gameListViewController.rootController = self; [self.navigationController pushViewController:gameListViewController animated:YES]; [gameListViewController release]; } It tells me that this line causes a 128 byte memory leak. [self.navigationController pushViewController:gameListViewController animated:YES]; Am I missing something obvious?

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  • How to draw an overlay on a SurfaceView used by Camera on Android?

    - by Cristian Castiblanco
    I have a simple program that draws the preview of the Camera into a SurfaceView. What I'm trying to do is using the onPreviewFrame method, which is invoked each time a new frame is drawn into the SurfaceView, in order to execute the invalidate method which is supposed to invoke the onDraw method. In fact, the onDraw method is being invoked, but nothing there is being printed (I guess the camera preview is overwriting the text I'm trying to draw). This is a simplify version of the SurfaceView subclass I have: public class Superficie extends SurfaceView implements SurfaceHolder.Callback { SurfaceHolder mHolder; public Camera camera; Superficie(Context context) { super(context); mHolder = getHolder(); mHolder.addCallback(this); mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); } public void surfaceCreated(final SurfaceHolder holder) { camera = Camera.open(); try { camera.setPreviewDisplay(holder); camera.setPreviewCallback(new PreviewCallback() { public void onPreviewFrame(byte[] data, Camera arg1) { invalidar(); } }); } catch (IOException e) {} } public void invalidar(){ invalidate(); } public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) { Camera.Parameters parameters = camera.getParameters(); parameters.setPreviewSize(w, h); camera.setParameters(parameters); camera.startPreview(); } @Override public void draw(Canvas canvas) { super.draw(canvas); // nothing gets drawn :( Paint p = new Paint(Color.RED); canvas.drawText("PREVIEW", canvas.getWidth() / 2, canvas.getHeight() / 2, p); } }

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  • Why does this JSON fail only in iPhone?

    - by 4thSpace
    I'm using the JSON framework from http://code.google.com/p/json-framework. The JSON below fails with this error: -JSONValue failed. Error trace is: ( Error Domain=org.brautaset.JSON.ErrorDomain Code=5 UserInfo=0x124a20 "Unescaped control character '0xd'", Error Domain=org.brautaset.JSON.ErrorDomain Code=3 UserInfo=0x11bc20 "Object value expected for key: Phone", Error Domain=org.brautaset.JSON.ErrorDomain Code=3 UserInfo=0x1ac6e0 "Expected value while parsing array" ) JSON being parsed: [{"id" :"2422","name" :"BusinessA","address" :"7100 U.S. 50","lat" :"38.342945","lng" :"-90.390701","CityId" :"11","StateId" :"38","CategoryId" :"1","Phone" :"(200) 200-2000","zip" :"00010"}] I think 0xd represents a carriage. When I put the above JSON in TextWrangler, I don't see any carriage returns. I got the JSON by doing "po myjson" in the debugger. It passes this validator: http://json.parser.online.fr/. Can anyone see what the problem may be?

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  • Strange UIKit bug, table view row stays selected

    - by Can Berk Güder
    I'm facing what appears to be a UIKit bug, and it takes the combination of two less commonly used features to reproduce it, so please bear with me here. I have quite the common view hierarchy: UITabBarController -> UINavigationController -> UITableViewController and the table view controller pushes another table view controller onto the navigation controller's stack when a row is selected. There's absolutely nothing special or fancy in the code here. However, the second UITableViewController, the "detail view controller" if you will, does two things: It sets hidesBottomBarWhenPushed to YES in its init method, so the tab bar is hidden when this controller is pushed: - (id)initWithStyle:(UITableViewStyle)style { if(self = [super initWithStyle:style]) { self.hidesBottomBarWhenPushed = YES; } return self; } It calls setToolbarHidden:NO animated:YES and setToolbarHidden:YES animated:YES on self.navigationController in viewWillAppear: and viewWillDisappear: respectively, causing the UIToolbar provided by UINavigationController to be displayed and hidden with animations: - (void)viewWillAppear:(BOOL)animated { [super viewWillAppear:animated]; [self.navigationController setToolbarHidden:NO animated:YES]; } - (void)viewWillDisappear:(BOOL)animated { [super viewWillDisappear:animated]; [self.navigationController setToolbarHidden:YES animated:YES]; } Now, if the second UITableViewController was pushed by selecting the row at the bottom of the screen (it doesn't have to be the last row) in the first controller, this row does not automatically get deselected when the user immediately or eventually returns to the first controller. Further, the row cannot be deselected by calling deselectRowAtIndexPath:animated: on self.tableView in viewWillAppear: or viewDidAppear: in the first controller. I'm guessing this is a bug in UITableViewController's drawing code which of course only draws visible rows, but unfortunately fails to determine correctly if the bottommost row will be visible in this case. I failed to find anything on this on Google or OpenRadar, and was wondering if anyone else on SO had this problem or knew a solution/workaround.

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  • Android : uploaded .apk file to server but cant download that .apk file

    - by rahul
    hiiiiiiii, I have uploaded my application's .apk file to server. When i try to download tht .apk file to my android HTC HERO phone then it gives error saying "file size cannot be determined". I also enabled settings to "allow install of non-Market applications" in my HTC HERO. plz help me if i am missing somthing . and is there any signing we have to do in android like symbian signing in Symbian Devices???

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  • [iPhone] Objective-C : UIScrollView manual paging

    - by Daniel
    Hi Folks! I want to use the scrollview as something like a picker in horizontal mode. The scrollview holds up to seven subviews. Each subview represents a value. Always three views are visible and the one in the middle is the selected one. Scrollview visible at start: __ | V1 | V2 Scrollview set to view/value two: V1 | V2 | V3 Scrollview set to last value: V2 | V3 | __ The real problem I have got is the "pagingEnabled" flag. If pagingEnabled is set to YES the scrollview pages always three subviews/values instead of only one. If pagingEnabled is set to NO the scrollview does not clinch. Is there a nice solution for my problem? Thanks a lot, Dan ;)

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  • How do I add a button to my navigationController's right side after pushing another view controller

    - by bobobobo
    So, immediately after pushing a view controller to my tableView, // Override to support row selection in the table view. - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { // Navigation logic may go here -- // for example, create and push another view controller. AnotherViewController *anotherViewController = [[AnotherViewController alloc] initWithNibName:@"AnotherView" bundle:nil]; [self.navigationController pushViewController:anotherViewController animated:YES]; Ok, so that makes another view slide on, and you can go back to the previous view ("pop" the current view) by clicking the button that automatically appears in the top left corner of the navigation bar now. Ok, so SAY I want to populate the RIGHT SIDE of the navigation bar with a DONE button, like in the "Notes" app that comes with the iPhone. How would I do that? I tried code like this: UIBarButtonItem * doneButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector( doneFunc ) ]; self.navigationController.navigationItem.rightBarButtonItem = doneButton ; // not it.. [doneButton release] ; doneFunc is defined, and everything, just the button never appears on the right side..

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  • Connecting Multiple Buttons to one action?

    - by David
    Hello, I have multiple UIButtons in my app. I also use interfacebuilder. In my .h i have something like this IBOutlet UIButton *button1; IBOutlet UIButton *button2; IBOutlet UIButton *button3; - (IBAction)buttonPressed; Then In my m i want to do something like this (IBAction)buttonPressed { if (theButtonIpressed == button1) { } } The problem is I don't have something called "theButtonIpressed" so I cant do this. What should my if statement look like? Thanks, -David

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  • iPhone - phone goes to sleep even if idleTimerDisabled is YES

    - by lostInTransit
    Hi I am using this in my appdelegate's applicationDidFinishLaunching: method to make sure the iPhone doesn't go to sleep during the time the app is open [application setIdleTimerDisabled:YES]; It works great on all screens but on one of the screens the iPhone goes to sleep. I could not figure out how to reproduce this and it seems to happen at random times. Can someone please tell me how to handle this situation. Thanks

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  • Allow horizontal scrolling only in the core-plot barchart?

    - by Madhup
    Hi all, I am using core-plot lib to draw bar charts in my app like this My problem is that i want the enabling of grapgh movement only in horizontal direction so that I can see the records for a long period of time, But the problem is that i just wnt to keep the y axis fixed to its place, How can i do this? Waiting for help....

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  • iPhone - return from an NSOperation

    - by lostInTransit
    Hi I am using a subclass of NSOperation to do some background processes. I want the operation to be cancelled when the user clicks a button. Here's what my NSOperation subclass looks like - (id)init{ self = [super init]; if(self){ //initialization code goes here _isFinished = NO; _isExecuting = NO; } return self; } - (void)start { if (![NSThread isMainThread]) { [self performSelectorOnMainThread:@selector(start) withObject:nil waitUntilDone:NO]; return; } [self willChangeValueForKey:@"isExecuting"]; _isExecuting = YES; [self didChangeValueForKey:@"isExecuting"]; //operation goes here } - (void)finish{ //releasing objects here [self willChangeValueForKey:@"isExecuting"]; [self willChangeValueForKey:@"isFinished"]; _isExecuting = NO; _isFinished = YES; [self didChangeValueForKey:@"isExecuting"]; [self didChangeValueForKey:@"isFinished"]; } - (void)cancel{ [self willChangeValueForKey:@"isCancelled"]; [self didChangeValueForKey:@"isCancelled"]; [self finish]; } And this is how I am adding objects of this class to a queue and listening for KVO notifications operationQueue = [[NSOperationQueue alloc] init]; [operationQueue setMaxConcurrentOperationCount:5]; [operationQueue addObserver:self forKeyPath:@"operations" options:0 context:&OperationsChangedContext]; - (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context { if (context == &OperationsChangedContext) { NSLog(@"Queue size: %u", [[operationQueue operations] count]); } else { [super observeValueForKeyPath:keyPath ofObject:object change:change context:context]; } } To cancel an operation (on a button click for instance), I tried calling -cancel but it doesn't make a difference. Also tried calling -finish but even that doesn't change anything. Every time I add an operation to the queue, the queue size only increases. finish is called (checked using NSLog statements) but it doesn't really end the operation. I'm still not very confident I'm doing this right Can someone please tell me where I am going wrong? Thanks a lot

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  • Supporting multiple screen sizes with Android using ImageButtons

    - by droidy
    I've read the Android documentation: http://developer.android.com/guide/practices/screens_support.html but still have some questions. I'm trying to design a music application which basically has images of the instrument (ImageButton) that play a sound when clicked. However, I'm confused about how to have the ImageButtons scale to fit all the different screen sizes and how to position them. Which layout is best used for needing to position ImageButtons in specific locations on the screen? (i.e. cymbals on a drum set) FrameLayout, RelativeLayout? If I only really care about medium and large screens, do I need to create different resources (images) for both as well as a different XML layout to position them? I'm trying to find the simplest way to do this without having to create a separate layout XML file for positioning/size and separate image resources for each screen. Any guidance is greatly appreciated. Thanks!

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  • UIWebView paging / line cut off

    - by John
    Hi, I am trying to page a webpage, so disable scrolling, then the second page is the same webpage scrolled down the page height. The problem I have is that the bottom of the first page often has 1/2 a line of text, then the second page has the bottom half of the line. Is there a way to ensure the entire line falls on one of the pages? Similar to Stanza etc? Thanks

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  • Download And Install apk from a link.

    - by rayman
    Hi, I`am trying to download and install an apk from some link, but for some reason i get an exception. I have one method downloadfile() which downloading the file and a call to and installFile() method, which supposed to install it in the device. some code: public void downloadFile() { String fileName = "someApplication.apk"; MsgProxyLogger.debug(TAG, "TAG:Starting to download"); try { URL u = new URL( "http://10.122.233.22/test/someApplication.apk"); try { HttpURLConnection c = (HttpURLConnection) u.openConnection(); try { c.setRequestMethod("GET"); c.setDoOutput(true); try { c.connect(); FileOutputStream f = context.openFileOutput(fileName, context.MODE_WORLD_READABLE); try { InputStream in = c.getInputStream(); byte[] buffer = new byte[1024]; int len1 = 0; int totsize = 0; try { while ((len1 = in.read(buffer)) > 0) { totsize += len1; f.write(buffer, 0, len1);// .write(buffer); } } catch (IOException e) { e.printStackTrace(); } f.close(); MsgProxyLogger.debug(TAG, TAG + ":Saved file with name: " + fileName); InstallFile(fileName); } catch (IOException e) { e.printStackTrace(); } } catch (IOException e) { e.printStackTrace(); } } catch (ProtocolException e) { e.printStackTrace(); } } catch (IOException e) { e.printStackTrace(); } } catch (MalformedURLException e) { e.printStackTrace(); } } and this is the install file method: private void InstallFile(String fileName) { MsgProxyLogger.debug(TAG, TAG + ":Installing file " + fileName); String src = String.format( "file:///data/data/com.test/files/", fileName); Uri mPackageURI = Uri.parse(src); PackageManager pm = context.getPackageManager(); int installFlags = 0; try { PackageInfo pi = pm.getPackageInfo("com.mirs.agentcore.msgproxy", PackageManager.GET_UNINSTALLED_PACKAGES); if (pi != null) { MsgProxyLogger.debug(TAG, TAG + ":replacing " + fileName); installFlags |= PackageManager.REPLACE_EXISTING_PACKAGE; } } catch (NameNotFoundException e) { } try { // PackageInstallObserver observer = new PackageInstallObserver(); pm.installPackage(mPackageURI); } catch (SecurityException e) { //!!!!!!!!!!!!!here i get an security exception!!!!!!!!!!! MsgProxyLogger.debug(TAG, TAG + ":not permission? " + fileName); } this is the exception details: "Neither user 10057 nor current process has android.permission.INSTALL_PACKAGES". and i have set in my main app that permission in the manifest. anyone has any idea? thanks, ray.

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