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  • UIDatePicker questions regarding displaying

    - by Zap
    Does anyone know if it's possible to change the minute interval of a UIDatePicker after it's been added to a UIView? Is it possible to show and hide 2 different datePickers? I want change the minuteInterval of the UIDatePicker to 5 and 30 when I click a button. Any sample code would be appreciated.

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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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  • Distributing APNS providers

    - by Sam
    I'm writing a business-focused iPhone app which includes a self-hosted server component. I'd like to include push notification functionality in the server; reading through the programming guide it looks as if this would involve either: Distributing the provider certificate with the server component - this doesn't sound like a terribly good idea (even if Apple permits it?) Hosting a shared notification provider and forwarding notifications to APNS from the servers. For an ongoing, high-availability service, this is likely to require including a subscription pricing component, which I would prefer to avoid. Require customers to apply for their own provider certificate. However, it's not clear whether multiple organisations are allowed to apply for provider certificates with a single bundle ID, and it would significantly increase the barrier to adoption. APNS looks to me as if it's specifically geared for centrally hosted services. Is anyone distributing self-hosted notification providers? Are there any other options?

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  • How to load View from NIB into another NIB?

    - by Sheehan Alam
    I have two NIB's ParentViewController.xib ChildViewController.xib ParentViewController.xib contains a UIView and a UIViewController. ChildViewController.xib contains a UIButton I want ChildViewController.xib to load in the ParentViewController.xib's UIView I have done the following: Created @property for UIView in ParentViewController Connected File's Owner to UIView in ParentViewController Set UIViewController in ParentViewController's NIB Name property to ChildViewController in Interface Builder Set ChildViewController view property to UIView in ParentViewController I was hoping this would load ChildViewController into my UIView in ParentViewController but no luck. I did get the following warning, which could be the culprit: 'View Controller (Child View)' has both its 'NIB Name' property set and its 'view' outlet connected. This configuration is not supported. I also have added additional code in ParentViewController's viewDidLoad(): - (void)viewDidLoad { [super viewDidLoad]; ChildViewController *childViewController = [[ChildViewController alloc]initWithNibName:@"ChildViewController" bundle:nil]; childViewController.view = self.myView; } Any thoughts on why ChildViewController does not load in the UIView of ParentViewController?

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  • current location from CoreLocation

    - by Christian
    I have an App which launches the google Map App. The code is: UIApplication *app = [UIApplication sharedApplication]; [app openURL:[[NSURL alloc] initWithString: @"http://maps.google.com/maps?daddr=Obere+Laube,+Konstanz,+Germany&saddr="]]; The saddr= should be the current location. I get the current location with -(void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation { NSLog(@"%f,%f", [newLocation coordinate]); The Log displays the correct coordinates like 2010-04-05 15:33:25.436 deBordeaux[60657:207] 37.331689,-122.030731 I didn't find the right way to transmit the coordinates to the url-string. Does someone can give me a hint how-to?

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  • iPhone: How to read contents from UIWebView XML Document?

    - by David Conlisk
    Hi all. In my iPhone app I'm using a UIWebView to allow the user to browse to an XML document on a website. When the user has found the xml document they want, they click a button below the UIWebView. Then I try to read the contents of the XML document from the UIWebView using: NSString *xml = [webView stringByEvaluatingJavaScriptFromString:@"document.getElementByTagName('rootXmlNodeName')[0].innerHTML"]; This doesn't work for me for XML documents. It works fine in a HTML page, e.g. using "html" for the rootXmlNodeName in the code snippet above. Any ideas? Thanks in advance!

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  • Facebook Source path issue in iPhone

    - by Arun Thakkar
    Hello everyone!! Hope You all are fie and also in one of your best of moods!! I need your help to solve an issue with Facebook. I have integrate Facebook Connect with my iPhone app. So as per step i have to write path of src folder into 'Header path info' Field in Project Build. I have given the absolute path to 'Header path info' Field. and its run fine without any Error.. But, Now When i Move the project folder to another destination, its but obvious, that path of src folder will change… So Now after moving file, when i run an application, It gives path error. So is there any way to solve this path issue? this comes when i run an app in simulator, and i guess It also won't run in iPhone because of problem of path of src folder. Kindly accept my Apologize if i have written anything wrong.. Looking Forwards, Thanks, Arun Thakkar

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  • using AudioQueues with AudioFileReadBytes

    - by Santosh
    Hey Im trying to work with Audio queues to play a very big mp3 file (arround 23 hours long). when audio queue asks for buffers though callback, im using AudioFileReadBytes() API to read the bytes from audio file and feed the queue. startQueue fails with the error : prime failed any inputs????? Also I succeeded playing file using AudioFileReadPackets API instead of AudioFileReadBytes(). But the problem with API is that when I seek (fast forward) by a long interval, say 9 hours (for example fast forward from 32 mins playtime to 9:32 mins) then AudioFileReadPackets() takes a long time (almost 2 mins) to read from new location. any comments would be greatly appreciated.

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  • iPhone OpenGL ES missing functions should be there - glBlendFuncSeparate etc

    - by quixoto
    I'm using OpenGL ES 1.1 on the iPhone, and I'd like to use the following functions: glBlendFuncSeparate glBlendColor With their related constants. These didn't exist in early iPhone GL implementations, but according to this page: http://developer.apple.com/iphone/library/releasenotes/General/iPhone30APIDiffs/index.html they should be there in 3.0+, which I'm building for. But I'm getting "implicit definition" warnings. What do I need to do to get those functions? Thanks!

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  • What's the proper way to setup different objects as delegates using Interface Builder?

    - by eagle
    Let's say I create a new project. I now add two text fields to the view controller in Interface Builder. I want to respond to delegate events that the text fields create, however, I don't want to have the main view controller to act as the delegate for both text fields. Ideally I want a separate file for each text field that acts as the delegate. Each of these objects also needs to be able to interact with the main view controller. My question is how I would set this up and link everything correctly? I tried creating a new class that inherits from NSObject and implements UITextFieldDelegate. I then added an instance variable called "viewController" of the same type of my view controller and marked it with IBOutlet (this required me to add #import "myViewcontroller.h"). I then went to Interface Builder and opened up my view controller which contains the two edit boxes. I added an NSObject to the form and changed it's type to be of the new class I created. I set its viewController property to the File's Owner, and set one of the textbox's delegate properties to point to this new object I created. Now when I run the program, it crashes when I touch the text box. It gives the error EXC_BAD_ACCESS. I'm guessing I didn't link stuff correctly in IB. Some things I'm not sure about which might be the problem: Does IB automatically know to create an instance of the class just by placing the NSObject in the ViewController? Can it properly assign the viewController property to an instance of itself even though it is creating itself at the same time?

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  • UI android question/problem with Listview

    - by user309554
    Hi, I'm trying to recreate the UI screen called 'My Places' that is used in the Weather Channel app. I'd attach a screenshot of the screen, but I can't seem to do it here. It seems they're using two listviews one on top of the other, but I'm not sure for certain. Could anybody confirm this for me? If they are doing this, how is this done? I've tried to implement this, but without full success. My top listview 'Add a place' 'comes up correctly, but the bottom listview will not appear/populate for me? I shall attach my code so far...... Any help would be greatly appreciated. Thanks Simon header_row.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="wrap_content" ImageView android:id="@+id/icon" android:layout_width="wrap_content" android:layout_height="fill_parent" android:layout_marginRight="6dip" android:src="@drawable/ic_menu_add" / LinearLayout android:orientation="vertical" android:layout_width="0dip" android:layout_weight="1" android:layout_height="fill_parent" TextView android:id="@+id/caption" android:layout_width="fill_parent" android:layout_height="0dip" android:layout_weight="1" android:gravity="center_vertical" android:text="Add a place"/ /LinearLayout /LinearLayout main.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="?android:attr/listPreferredItemHeight" android:padding="6dip" ListView android:id="@+id/header" android:layout_width="wrap_content" android:layout_height="wrap_content"/ LinearLayout android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="wrap_content" ListView android:id="@+id/list" android:layout_width="fill_parent" android:layout_height="wrap_content"/ /LinearLayout /LinearLayout public class ListViewTest extends Activity { private static String[] items={"lorem", "ipsum", "dolor", "sit", "amet", "consectetuer", "adipiscing", "elit", "morbi", "vel", "ligula", "vitae", "arcu", "aliquet", "mollis", "etiam", "vel", "erat", "placerat", "ante", "porttitor", "sodales", "pellentesque", "augue", "purus"}; private ListView Header; private ListView List; private ArrayList caption = null; private CaptionAdapter adapter; private ArrayAdapter listAdapter; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); caption = new ArrayList(); Caption cap = new Caption(); cap.setCaption("Add a place"); caption.add(cap); this.adapter = new CaptionAdapter(this, R.layout.header_row, caption); Header = (ListView) findViewById(R.id.header); Header.setAdapter(adapter); //Log.d("ListViewTest", "caption size is:" + caption.size()); adapter.notifyDataSetChanged(); List = (ListView) findViewById(R.id.list); listAdapter = new ArrayAdapter(this, android.R.layout.simple_list_item_1, items); List.setAdapter(listAdapter); listAdapter.notifyDataSetChanged(); //setListAdapter(new ArrayAdapter(this, //android.R.layout.simple_list_item_1, //items)); } private class CaptionAdapter extends ArrayAdapter { private ArrayList caption; public CaptionAdapter(Context context, int textViewResourceId, ArrayList caption) { super(context, textViewResourceId, caption); this.caption = caption; } @Override public View getView(int position, View convertView, ViewGroup parent) { View v = convertView; if (v == null) { LayoutInflater vi = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE); v = vi.inflate(R.layout.header_row, null); } Caption c = caption.get(position); if (c != null) { TextView caption = (TextView) v.findViewById(R.id.caption); if (caption != null) { caption.setText(c.getCaption()); } } return v; } } }

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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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  • Problem dismissing multiple modal view controllers

    - by Sheehan Alam
    I am having trouble getting my modal view controllers to display properly. I have a parent view controller that is the delegate for modal view A. In modal view A I am presenting modal view B, and having the delegate dimiss modal view A. When modal view B appears it seems to display but the screen dims, and the UI locks up, but the app doesn't crash. I set animation settings to NO and I am still getting the same issue.

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  • iPhone Core Data: request for member 'tableView' in something not a structure or union

    - by Nic Hubbard
    I am trying to use CoreData to populate a UITableView. I have been using the developer "Locations" project, and I think I have everything correct. But, now I am getting the following error when I build: request for member 'tableView' in something not a structure or union Why would it be confused about tableView? I am using it many times in the methods. The errors seem to be coming from: [self.tableView insertRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade]; [self.tableView scrollToRowAtIndexPath:[NSIndexPath indexPathForRow:0 inSection:0] atScrollPosition:UITableViewScrollPositionTop animated:YES]; Ideas?

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  • Schedule timer with NSTimer makes the task run faster than expected

    - by Hoang Pham
    I schedule a timer with NSTimer's function in viewWillAppear as follows: minutesTimer = nil; minutesTimer = [NSTimer scheduledTimerWithTimeInterval:60 target:self selector:@selector(updateScrollViewItems) userInfo:NULL repeats:YES]; With this function call, I expect it to call the selector updateScrollViewItems every minute, but it does not, it update items faster than expected (around some seconds). What is the cause of this unexpected behavior?

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  • How to upload images from iPhone

    - by Karthik.K
    Hi, I;m new to iPhone application development. I need to design an app to upload images from my iPhone to a HTTP Server. I tried following this http://stackoverflow.com/questions/125306/how-can-i-upload-a-photo-to-a-server-with-the-iphone/2528575#2528575, but did not taste success. Please help me out. :) Thanks! :)

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  • OPENGLES 2.0 equivalent of glorthof?

    - by Zippo
    Hi Guys, In my iphone app, i need to project 3d scene into the 2D coordinates of the screen for some calculations. My objects go through various rotations, translations and scaling. So i figured i need to multiply the vertices with ModelView matrix first, then i need to multiply it with the Orthogonal projection matrix. First of all am on the right track? I have the Model View Matrix, but need the projection matrix. Is there a glorthof equivalent in ES 2.0? PS: i am new to opengl. Thanks for your help. Zippo

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  • New View when device is rotated

    - by Sebastian
    Hi, I want to call "presentmodalviewcontroller" when the iPhone / iPod Touch is rotated to landscape mode with a flip animation. When it gets rotated back to portrait, I want to present the first view again, again with the flip animation. Weren't able to find something working on the web :( I'm sure you can help me :) Thanks a lot ! Sebastian

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