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  • UIPageControl bug: showing one bullet first and then showing everything

    - by user313551
    I have some strange behavior using a UIPageControl: First it appears showing only one bullet, then when I move the scroll view all the bullets appear correctly. Is there something I'm missing before I add it as a subview? Here is my code imageScrollView.h : @interface ImageScrollView : UIView <UIScrollViewDelegate> { NSMutableDictionary *photos; BOOL *pageControlIsChangingPage; UIPageControl *pageControl; } @property (nonatomic, copy) NSMutableDictionary *photos; @property (nonatomic, copy) UIPageControl *pageControl; @end Here is the code for imageScrollView.m: #import "ImageScrollView.h" @implementation ImageScrollView @synthesize photos, pageControl; - (id)initWithFrame:(CGRect)frame { if ((self = [super initWithFrame:frame])) { // Initialization code NSLog(@"%@",pageControl); } return self; } - (void) drawRect:(CGRect)rect { [self removeAllSubviews]; UIScrollView *scroller = [[UIScrollView alloc] initWithFrame:CGRectMake(0,0,self.frame.size.width,self.frame.size.height)]; [scroller setDelegate:self]; [scroller setBackgroundColor:[UIColor grayColor]]; [scroller setShowsHorizontalScrollIndicator:NO]; [scroller setPagingEnabled:YES]; NSUInteger nimages = 0; CGFloat cx= 0; for (NSDictionary *myDictionaryObject in photos) { if (![myDictionaryObject isKindOfClass:[NSNull class]]) { NSString *photo =[NSString stringWithFormat:@"http://www.techbase.com.mx/blog/%@", [myDictionaryObject objectForKey:@"filepath"]]; NSDictionary *data = [myDictionaryObject objectForKey:@"data"]; UIView *imageContainer = [[UIView alloc] initWithFrame:CGRectMake(0, 0, self.frame.size.width, self.frame.size.height - 30)]; TTImageView *imageView = [[TTImageView alloc] initWithFrame:CGRectMake(0, 0, self.frame.size.width, self.frame.size.height - 30)]; imageView.urlPath=photo; [imageContainer addSubview:imageView]; UILabel *caption = [[UILabel alloc] initWithFrame:CGRectMake(0,imageView.frame.size.height,imageView.frame.size.width,10)]; [caption setText:[NSString stringWithFormat:@"%@",[data objectForKey:@"description"]]]; [caption setBackgroundColor:[UIColor grayColor]]; [caption setTextColor:[UIColor whiteColor]]; [caption setLineBreakMode:UILineBreakModeWordWrap]; [caption setNumberOfLines:0]; [caption sizeToFit]; [caption setFont:[UIFont fontWithName:@"Georgia" size:10.0]]; [imageContainer addSubview:caption]; CGRect rect = imageContainer.frame; rect.size.height = imageContainer.size.height; rect.size.width = imageContainer.size.width; rect.origin.x = ((scroller.frame.size.width - scroller.size.width) / 2) + cx; rect.origin.y = ((scroller.frame.size.height - scroller.size.height) / 2); imageContainer.frame=rect; [scroller addSubview:imageContainer]; [imageView release]; [imageContainer release]; [caption release]; nimages++; cx +=scroller.frame.size.width; } } [scroller setContentSize:CGSizeMake(nimages * self.frame.size.width, self.frame.size.height)]; [self addSubview:scroller]; pageControl = [[UIPageControl alloc] initWithFrame:CGRectMake(self.frame.size.width/2, self.frame.size.height -20, (self.frame.size.width/nimages)/2, 20)]; pageControl.numberOfPages=nimages; [self addSubview:pageControl]; [scroller release]; } -(void)dealloc { [pageControl release]; [super dealloc]; } -(void)scrollViewDidScroll:(UIScrollView *)_scrollView{ if(pageControlIsChangingPage){ return; } CGFloat pageWidth = _scrollView.frame.size.width; int page = floor((_scrollView.contentOffset.x - pageWidth /2) / pageWidth) + 1; pageControl.currentPage = page; } -(void)scrollViewDidEndDecelerating:(UIScrollView *)_scrollView{ pageControlIsChangingPage = NO; } @end

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  • What languages, preprocessors, and toolkits will Apple not allow you to develop iPhone OS 4.0 Apps w

    - by Tony Lambert
    According to articles on web Apple will not approve Apps that have code that is not originally developed in Objective C, C or C++. Found on the Web: 3.3.1 Applications may only use Documented APIs in the manner prescribed by Apple and must not use or call any private APIs. Applications must be originally written in Objective-C, C, C++, or JavaScript as executed by the iPhone OS WebKit engine, and only code written in C, C++, and Objective-C may compile and directly link against the Documented APIs (e.g., Applications that link to Documented APIs through an intermediary translation or compatibility layer or tool are prohibited). Can we build a list of things developer use that will and won't be allowed under these possible new rules? We can use: C, C++, Objective C We can't use: Flash, Monotouch C#, Pascal, Fortran, Perl, Python, Lex, Yacc, Unity (games engine), Java What others?

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  • Best way to store date/time into core data

    - by Dave
    Hi, For each course I am storing the day of the week the class the user has...and the start and end time and room no. What would be the best approach in terms of data type, Like for storing time?? so that when I pull it out I can display it e.g 1:00 PM. Thanks!

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  • ping to web server from iphone

    - by Sreelal
    Hi , I am developing an aplication which needs to download some data from webserver.So i need to first ping to the web server to check whether the service is available after checking the internet connectivity .I used the following code to check server availability ` BOOL success = NO; const char *host_name = [@"http://192.168.1.7:8080/TestWeb/webresources/" cStringUsingEncoding:NSASCIIStringEncoding]; SCNetworkReachabilityRef reachability = SCNetworkReachabilityCreateWithName(NULL, host_name); SCNetworkReachabilityFlags flags; success = SCNetworkReachabilityGetFlags(reachability, &flags); BOOL isAvailable = success && (flags & kSCNetworkFlagsReachable) && !(flags & kSCNetworkFlagsConnectionRequired); return isAvailable; ` where my server is uploaded locally.But this code always return an invalid result,but it works correctly if i gave some exixting sites like google.com.Please let me know whats i am doing wrong..

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  • Making complex queries through SQLiteDatabase

    - by Luca
    Hi! I'm using the Android MediaProvider application to get information regarding the resources registered in the media library. The only way I found to do this is to use the ContentProvider class provided by the MediaProvider application. Unfortunately, it seems to me this is quite a limitation, isn't it? Is it possible this way to create complex queries with subqueries and using other functions of SQLite? I thought that it may be possible using the SQLiteDatabase class, but it seems it is not possible to open the database directly with its path, and anyway, the query method seems not to allow subqueries. Any solution to this? Thanks!

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  • AddObjectsFromArray does not work properly

    - by Sheehan Alam
    I have two NSMutableArrays: NSMutableArray* currentMessages NSMutableArray* items I am trying to copy the contents of items into currentMessages as such: [self.currentMessages addObjectsFromArray:self.items]; When I am debugging self.items contains 30 objects. After this operation self.currentMessages contains 0 objects. Why is the copy not working?

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  • Loading a Reusable UITableViewCell from a Nib

    - by Greg Martin
    I am able to design custom UITableViewCells and load them just fine using the technique described in the thread found at http://forums.macrumors.com/showthread.php?t=545061. However, using that method no longer allows you to init the cell with a reuseIdentifier which means you have to create whole new instances of each cell at every call. Has anyone figured out a good way to still cache particular cell types for reuses, but still be able to design them in Interface Builder?

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  • Problem Showing Sensors Details

    - by Skatephone
    Hi, i'm looking to show detail about sensors in an Actvity but when i put my app in to my phone i manage to view only details about the accellerometer, but the program says that i have 4 sensors: Accellerometer, Magnetic field, Orientation and Temperature. I'm using Android 1.6 and a htc Tattoo for testing. This is my code: public class SensorInfo extends Activity { private SensorManager mSensorManager; TextView mTextAcc,mTextGyr,mTextLig,mTextMag,mTextOri, mTextPre,mTextPro,mTextTem, mSensorsTotTitle,mSensorAvailablesTitle,mTextAccTitle,mTextGyrTitle,mTextLigTitle,mTextMagTitle,mTextOriTitle, mTextPreTitle,mTextProTitle,mTextTemTitle; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.detaillayout); // Get the texts fields of the layout and setup to invisible setTextViews(); // Get the SensorManager mSensorManager= (SensorManager) getSystemService(SENSOR_SERVICE); // List of Sensors Available List<Sensor> msensorList = mSensorManager.getSensorList(Sensor.TYPE_ALL); // Print Sensor Details Sensor sens; int type,i; String text = new String(""); // Do the list of available sensors on a String and print detail about each sensor for (i=0;i<msensorList.size();i++){ sens = msensorList.get(i); type = sens.getType(); text = " - "+getString(R.string.power)+" "+String.valueOf(sens.getPower())+"mA\n"; text+= " - "+getString(R.string.resolution)+" "+String.valueOf(sens.getResolution())+"\n"; text+= " - "+getString(R.string.maxrange)+" "+String.valueOf(sens.getMaximumRange ())+"\n"; text+= " - "+getString(R.string.vendor)+" "+sens.getVendor()+"\n"; text+= " - "+getString(R.string.version)+" "+String.valueOf(sens.getVersion()); switch(type) { // Check the type of Sensor that generate the event and show is resolution case Sensor.TYPE_ACCELEROMETER: mTextAccTitle.setVisibility(0); mTextAccTitle.setMaxHeight(30); mTextAcc.setVisibility(0); mTextAcc.setMaxHeight(100); mTextAcc.setText(text); // Print data of the Sensor break; case Sensor.TYPE_GYROSCOPE: mTextGyrTitle.setVisibility(0); mTextGyr.setVisibility(0); mTextGyr.setText(text); // Print data of the Sensor break; case Sensor.TYPE_LIGHT: mTextLigTitle.setVisibility(0); mTextLig.setVisibility(0); mTextLig.setText(text); // Print data of the Sensor break; case Sensor.TYPE_MAGNETIC_FIELD: mTextMagTitle.setVisibility(0); mTextMag.setVisibility(0); mTextMag.setText(text); // Print data of the Sensor break; case Sensor.TYPE_ORIENTATION: mTextOriTitle.setVisibility(0); mTextOri.setVisibility(0); mTextOri.setText(text); // Print data of the Sensor break; case Sensor.TYPE_PRESSURE: mTextPreTitle.setVisibility(0); mTextPre.setVisibility(0); mTextPre.setText(text); // Print data of the Sensor break; case Sensor.TYPE_PROXIMITY: mTextProTitle.setVisibility(0); mTextPro.setVisibility(0); mTextPro.setText(text); // Print data of the Sensor break; case Sensor.TYPE_TEMPERATURE: mTextTemTitle.setVisibility(0); mTextTem.setVisibility(0); mTextTem.setText(text); // Print data of the Sensor break; } } } // Get the texts fields of the layout and setup to invisible void setTextViews(){ mTextAccTitle = (TextView) findViewById(R.id.sensorAccTitle); mTextAccTitle.setVisibility(4); mTextAccTitle.setMaxHeight(0); mTextAcc = (TextView) findViewById(R.id.sensorAcc); mTextAcc.setMaxHeight(0); mTextAcc.setVisibility(4); mTextGyrTitle = (TextView) findViewById(R.id.sensorGyrTitle); mTextGyrTitle.setVisibility(4); mTextGyrTitle.setMaxHeight(0); mTextGyr = (TextView) findViewById(R.id.sensorGyr); mTextGyr.setVisibility(4); mTextGyrTitle.setMaxHeight(0); mTextLigTitle = (TextView) findViewById(R.id.sensorLigTitle); mTextLigTitle.setVisibility(4); mTextLigTitle.setMaxHeight(0); mTextLig = (TextView) findViewById(R.id.sensorLig); mTextLig.setVisibility(4); mTextLig.setMaxHeight(0); mTextMagTitle = (TextView) findViewById(R.id.sensorMagTitle); mTextMagTitle.setVisibility(4); mTextMagTitle.setMaxHeight(0); mTextMag = (TextView) findViewById(R.id.sensorMag); mTextMag.setVisibility(4); mTextMag.setMaxHeight(0); mTextOriTitle = (TextView) findViewById(R.id.sensorOriTitle); mTextOriTitle.setVisibility(4); mTextOriTitle.setMaxHeight(0); mTextOri = (TextView) findViewById(R.id.sensorOri); mTextOri.setVisibility(4); mTextOri.setMaxHeight(0); mTextPreTitle = (TextView) findViewById(R.id.sensorPreTitle); mTextPreTitle.setVisibility(4); mTextPreTitle.setMaxHeight(0); mTextPre = (TextView) findViewById(R.id.sensorPre); mTextPre.setVisibility(4); mTextPre.setMaxHeight(0); mTextProTitle = (TextView) findViewById(R.id.sensorProTitle); mTextProTitle.setVisibility(4); mTextProTitle.setMaxHeight(0); mTextPro = (TextView) findViewById(R.id.sensorPro); mTextPro.setVisibility(4); mTextPro.setMaxHeight(0); mTextTemTitle = (TextView) findViewById(R.id.sensorTemTitle); mTextTemTitle.setVisibility(4); mTextTemTitle.setMaxHeight(0); mTextTem = (TextView) findViewById(R.id.sensorTem); mTextTem.setVisibility(4); mTextTem.setMaxHeight(0); } } Tank's Valerio From Italy

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  • iPhone: Proper use of View and View Controller

    - by Joel
    I've recently been doing a lot of Objective-C programming, and just got back into doing more iPhone development. I've done a lot of programming using MVC in other languages/frameworks, but I just want to make sure I'm using MVC properly in my iPhone Development. I created a new iPhone Utility Application, which creates two views: MainView and FlipsideView. Both have a controller (FlipsideViewController and MainViewController) and XIB file of their own. What I've been doing is putting the IBOutlet UIControl myControl variables in my MainView.h or FlipsideView.h files and then tying the controls in Interface Builder to those variables. Then I put any IBAction SomeAction myAction methods in the MainViewController.h and FlipsideViewController.h files and tying the events to those methods in Interface Builder. This seems to be conceptually correct, but seems to cause problems. Say I have a button that when clicked it changes a label's text. So the Controller doesn't have a clue of what the variable name of the label is in the OnTouchUp event handler for my button. So I make a @property for it. But since the MainViewController.view property isn't of type MyView, I get warnings or errors whenever I try to access those properties from the view controller. I am doing this correctly? Is there a better way to do this? If this is correct, how do I properly work with those variables without getting warnings or errors? Thanks

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  • Google Mock for iPhone development?

    - by Cliff
    I have an interesting situation where I am refactoring a bunch of ObjC iPhone code to create a C++ API. I'm a novice to C++ and looking into C++ mocking frameworks to augment the work I'd done using OCUnit and poor man's mocks. I ran across googlemock and wanted to know if anyone has ever used it for iPhone development? Also, how can I share this (or mockpp) with other devs as it is an installable package and doesn't seem to lend itself to checking into a repository?

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  • Two PickerViews in save View issue?

    - by NextRev
    I'm trying to have 2 pickerviews in the same view. It works except for two things. If one pickerview has more rows than the other the app crashes when picking an item from the pickerview with more items. Also I created an NSLog for the pickerviews and the console shows that I'm picking two items at once when in fact i'm only dealing with one pickerview. I know it sounds a bit confusing but I'm including all the code. Thank you in advance. list and list2 are NSMutableArrays list has 4 items list2 has 5 items There error: * Terminating app due to uncaught exception 'NSRangeException', reason: '* -[NSCFArray objectAtIndex:]: index (4) beyond bounds (4)' -(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)thePickerView{ if([thePickerView isEqual:pickerView1 ]){ return 1; } else if([thePickerView isEqual:pickerView2]){ return 1; } else{ return 0; } } -(NSInteger)pickerView:(UIPickerView *)thePickerView numberOfRowsInComponent:(NSInteger)component{ if([thePickerView isEqual:pickerView1 ]){ return [list count]; } else if([thePickerView isEqual:pickerView2]){ return [list2 count]; } else{ return 0; } } -(NSString *)pickerView:(UIPickerView *)thePickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component{ if([thePickerView isEqual:pickerView1 ]){ return [list objectAtIndex:row]; } else if([thePickerView isEqual:pickerView2]){ return [list2 objectAtIndex:row]; } else{ return 0; } } - (void)pickerView:(UIPickerView *)thePickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component { NSLog(@"Selected item %@. Index of selected item:%i", [list objectAtIndex:row], row); NSLog(@"Selected item %@. Index of selected item:%i", [list2 objectAtIndex:row], row); NSLog(@"Selected item %@. Index of selected item:%i", [list3 objectAtIndex:row], row); if([thePickerView isEqual:pickerView1 ]){ //Do Something } else if([thePickerView isEqual:pickerView2 ]){ //Do Something } else if([thePickerView isEqual:pickerView3 ]){ //Do Something } }

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  • Detecting bad jpeg images

    - by Gerard Cerchio
    The question on validating jpegs on network transfer is very helpful. Could we take this question one step further? What if the image data is incomplete or corrupt from the server? The complete transport works, the MIME type is image/jpeg, the UIImage is constructed and non-nil but the renderer discovers inconsistencies in the data and the log shows "Bad Huffman code" or "premature end of data segment" How would I capture this error before tossing the UIImage into the view context and thereby getting a not-pretty image on the screen? Could I render it to a non-screen context and capture the error?

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  • How do you debug a windows service that is being installed?

    - by Mike Pateras
    I know how to attach a debugger to a windows service, but I can't seem to get attached to one that's being installed and started by a windows installer. I've tried: Setting a Thread.Sleep(TimeSpan.FromSeconds(30)); at the beginning of the on-start, but when I try to attach in Visual Studio, the name of the service does not appear as an option. This normally works, the service's name shows up in the list, but when using the installer it does not. Setting a Debugger.Break and Debugger.Launch. Neither really do anything. What can I do to debug my service?

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  • Why my UTableView with style UITableViewStyleGrouped is consuming memory?

    - by prathumca
    Hello everyone, Currently in my app, I'm using an UITableView with style UITableViewStyleGrouped as shown below. CGRect imgFrame = CGRectMake(0, 0, 320, 650); UITableView *myTable = [[UITableView alloc] initWithFrame:imgFrame style:UITableViewStyleGrouped]; myTable.dataSource = self; myTable.delegate = self; //make the current object the event handler for view [self.view addSubview:myTable]; [myTable release]; And the data has stored in an array "dataArray". dataArray has collection of arrays, where each array represent a section. Currently I have only one section with 100 records. When I installed my app onto my IPhone, I observed that this UITableView is consuming 20 MB of IPhone memory. If I changed the table view style to "UITableViewStylePlain", then it is consuming only 4MB of memory. I'm trying to figure it out, where is the exact problem, but not. What was wrong with "UITableViewStyleGrouped"? Regards, prathumca.

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  • How much of the "Objective-C" I'm learning is universal Objective-C, and not Apple's frameworks?

    - by Chris Cooper
    This question is related to one of my others about C: What can you do in C without “std” includes? Are they part of “C,” or just libraries? I've become curious lately as to what is really contained the the core Objective-C language, and what parts of the Objective-C I've done for iPhone/OS X development is specific to Apple platforms. I know that things like syntax are the same, but for instance, is NSObject and its torrent of NS-subclasses actually part of "standard" Objective-C? Could I use them in, say, Windows? What parts are universal for the most part, and what parts would I only find on an Apple platform? If you want, giving an example of Objective-C used elsewhere as an example of what is more "universal" would help me as well. Thanks! =)

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  • iPad: Cannot load facebook page wall in UIWebview

    - by geekay
    Its already too long i am struggling with this issue. After searching a lot I decided to post a question here. What my app does Captures photo Uploads the photo on the wall of the page Displays the facebook page wall in a UIWebview after upload is complete Everything was working as expected 4 days back :) Suddenly something went wrong :( Code NSString *facebookPageURL =@"https://m.facebook.com/pages/<myPageName>/<myPageID>?v=wall" UIWebView *webView = [[UIWebView alloc] initWithFrame:kAppFrame]; [webView setUserInteractionEnabled:NO]; [webView setBackgroundColor:[UIColor clearColor]]; webView.delegate = self; [webView setHidden: YES]; NSURL *url = [NSURL URLWithString:[facebookPageURL stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding] relativeToURL:[NSURL URLWithString:@"http://login.facebook.com"]]; NSMutableURLRequest *request = nil; if(url) request = [NSMutableURLRequest requestWithURL:url]; [webView loadRequest:request]; [self.view addSubview:webView]; [webView reload]; [self.view bringSubviewToFront:webView]; webView = nil; Scenario If I open the url facebookPageURL in Safari in iOS Simulator it works well If I open the url in any browser on Mac it works well In webView I see a white screen If I change the facebookPageURL to remove ?v=wall to ?v=info I am stil able to see the page.(not blank screen atleast). Note 1. My facebook Page is NOT unpublished and is visible. 2. I have cross checked the facebook page permissions. I suspect there is something changed on facebook side overnight. Please guide.

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  • Problem while loading the application on iPAD?

    - by chaitanya
    Hi, I developed a simple application for iPAD. I want to test the app how it works on the device. I have paid developer licence, and i have added the device id and created the app id and i have downloaded the provisioning profile using both. The same way how we will build the app for iphone i have done for ipad. i have sent the provisioning profile and .ipa file to my friend to load on to the ipad device(same device which i have added in the developer.apple.com). when he tried to drag n drop the provisioning file on to the device from iTunes it is giving below error. "abc.mobileprovision" was not copied on to the iPAD, because it cannot be palyed on this iPAD I am not able to understand what the exact error is. Can anyone please let me know how to dump the applicatio on to the ipad device?

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  • Optimising local image loading/rendering on iPhone

    - by Tricky
    Hi, I'm looking to create an interface where the user can navigate through large volumes of images. Each image has a thumbnail of 128x128 that I wish to display and will be kind of similar to coverflow in operation. I have this all working in principle but am becoming stuck when navigating through content at speed. The interface begins to stutter and becoming jerky. I believe this is primarily because of disk i/o and the cost of rendering each image. Is there anyway this can be handed over to a seperate thread simply? Defaulting to a greyed out thumbnail until the image has loaded? How have Apple managed to achieve this in coverflow? Many thanks,

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  • Need some advice on Core Data modeling strategy

    - by Andy
    I'm working on an iPhone app and need a little advice on modeling the Core Data schema. My idea is a utility that allows the user to speed-dial their contacts using user-created rules based on the time of day. In other words, I would tell the app that my wife is commuting from 6am to 7am, at work from 7am to 4pm, commuting from 4pm to 5pm, and home from 5pm to 6am, Monday through Friday. Then, when I tap her name in my app, it would select the number to dial based on the current day and time. I have the user interface nearly complete (thanks in no small part to help I've received here), but now I've got some questions regarding the persistent store. The user can select start- and stop-times in 5-minute increments. This means there are 2,016 possible "time slots" in week (7 days * 24 hours * 12 5-minute intervals per hour). I see a few options for setting this up. Option #1: One array of time slots, with 2,016 entries. Each entry would be a dictionary containing a contact identifier and an associated phone number to dial. I think this means I'd need a "Contact" entity to store the contact information, and a "TimeSlot" entity for each of the 2,016 possible time slots. Option #2: Each Contact has its own array of time slots, each with 2,016 entries. Each array entry would simply be a string indicating which phone number to dial. Option #3: Each Contact has a dictionary of time slots. An entry would only be added to the dictionary for time slots with an active rule. If a search for, say, time slot 1,299 (Friday 12:15pm) didn't find a key @"1299" in the dictionary, then a default number would be dialed instead. I'm not sure any of these is the "right" way or the "best" way. I'm not even sure I need to use Core Data to manage it; maybe just saving arrays would be simpler. Any input you can offer would be appreciated.

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  • How to save iphone screen shot as jpeg image?

    - by Ali
    Hi I am working on an app where I need to save a part of iphone's screen shot as JPEG and then send this through email. The part of screen has some text labels, fields etc. Any ideas please on how can I save part of screen as JPEG (I am a newbie therefore any help/sample code is highly appreciated)

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