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  • NSString stringWithFormat question

    - by John Smith
    I am trying to build a small table using NSString. I cannot seem to format the strings properly. Here is what I have [NSString stringWithFormat:@"%8@: %.6f",e,v] where e is an NSString from somewhere else, and v is a float. What I want is output something like this: Grapes: 20.3 Pomegranates: 2.5 Oranges: 15.1 What I get is Grapes:20.3 Pomegranates:2.5 Oranges:15.1 How can I fix my format to do something like this?

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  • iPhone Camera and Image Chooser

    - by PF1
    Hi Everyone: I have found a lot of information on using UIImagePickerController to let the user choose the image they want from the Photos application's data. I am wondering how I can create this same effect on 3.0, as it doesn't seem as if a lot of the old code works anymore. In addition, I would like the user to be able to take a new picture from this same pop-up. Thanks for any help!

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  • Alternatives to java on android

    - by user84584
    Hello guys, I just got myself an android phone and I'm dying to start coding on it ! However I'm not a big java fan, although I can live with that, I would like to know if there're reasonable alternatives for the android virtual machine. I've done a medium sized project using clojure, however from the reviews I read, it's very slow when running on android. How about scala ? I read that some people did experiments with it in android, is it "fast enough" ? How big is the learning curve ? Cheers, Ze Maria

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  • release vs setting-to-nil to free memory

    - by Dan Ray
    In my root view controller, in my didReceiveMemoryWarning method, I go through a couple data structures (which I keep in a global singleton called DataManager), and ditch the heaviest things I've got--one or maybe two images associated with possibly twenty or thirty or more data records. Right now I'm going through and setting those to nil. I'm also setting myself a boolean flag so that various view controllers that need this data can easily know to reload. Thusly: DataManager *data = [DataManager sharedDataManager]; for (Event *event in data.eventList) { event.image = nil; event.thumbnail = nil; } for (WondrMark *mark in data.wondrMarks) { mark.image = nil; } [DataManager sharedDataManager].cleanedMemory = YES; Today I'm thinking, though... and I'm not actually sure all that allocated memory is really being freed when I do that. Should I instead release those images and maybe hit them with a new alloc and init when I need them again later?

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  • iPhone table header labels not showing up in Release build but show up OK in Debug build

    - by Robert
    My table header shows up ok with Release build or Debug build for the iPhone simulator, but the header labels only show up with debug build on the iPhone. No header labels show up on the iPhone for release build. Any ideas? Thanks, Robert My code for the header is below - (UIView *) tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)sectionNum { @try { // create the parent view that will hold header Label UIView* customView = [[[UIView alloc] initWithFrame:CGRectMake(HEADER_RELX_OFFSET, HEADER_RELY_OFFSET, HEADER_ROW_WIDTH, HEADER_HEIGHT)] autorelease]; UILabel* headerLabel = [[UILabel alloc] initWithFrame:CGRectZero]; headerLabel.backgroundColor = [UIColor clearColor]; headerLabel.opaque = NO; headerLabel.numberOfLines = 0; headerLabel.textColor = [UIColor blackColor]; headerLabel.highlightedTextColor = [UIColor whiteColor]; headerLabel.font = [UIFont boldSystemFontOfSize:HEADER_FONT_SIZE]; headerLabel.textAlignment = UITextAlignmentCenter; headerLabel.lineBreakMode = UILineBreakModeWordWrap; headerLabel.frame = CGRectMake(HEADER_RELX_OFFSET, HEADER_RELY_OFFSET, HEADER_ROW_WIDTH, HEADER_HEIGHT); if(sectionNum == 0) headerLabel.text = @"My Label"; else headerLabel.text = @""; [customView addSubview:headerLabel]; return customView; @catch (NSException* exception) { NSLog(@"viewForHeaderInSection: %@: %@",[exception name],[exception reason]); } }

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  • Iphone geo location permission check

    - by Johnny Mast
    Dear Developers, Hi i have a quick question about the iphone (iOS) geolocation api's. Currenly i have a map in my application and the operating system will ask the user if it wants to allow the use of geolocations. Now thats all nice but the thing is i want to change my app when geolocations is allowed to a so called "Geo location" mode where new options are available or "standard" mode with less ui elements when permissions are not granted. What can i use to check if permission is granted?. So basicaly is that an api that tells me permission granted yes or no.

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  • Problem with UITextView

    - by user367039
    I have a strange problem with trying to pass a string from one viewcontroller to another view controller if the string originates from a UITextview instead of UITextfield. Both UITextview.text and UITextfield.text are of type NSString. The following code takes either Textfield.text or Textview.text depending on the fieldType and puts it into a string called aString. NSString *aString = [[NSString alloc] init]; if (fieldType == 3) { aString = textView.text; } else { aString = textField.text; } When I examine aString on either cases, I can see that it has successfully assigned the text into aString. I then pass the string to the other view controller using this code. [delegate updateSite:aString :editedFieldKey :fieldType]; [self.navigationController popViewControllerAnimated:YES]; This works fine if aString originated from textfield.text but nothing happens except the view controller is popped if aString was from textview.text This is the code that takes aString and does stuff with it, however it doesn't even execute the first line of code "NSLog(@"Returned object: %@, field type:%@", aString,editedFieldKey);" if aString was from textview.text Any help will be appreciated. -(void)updateSite:(NSString *)aString :(NSString *)editedFieldKey :(int)fieldType { NSLog(@"Returned object: %@, field type:%@", aString,editedFieldKey); switch (fieldType) { case 0: //string [aDiveSite setValue:aString forKey:editedFieldKey] ; NSLog(@"String set %@",[aDiveSite valueForKey:editedFieldKey] ); break; case 1: //int [aDiveSite setValue:[NSNumber numberWithInt:aString.intValue] forKey:editedFieldKey]; NSLog(@"Integer set"); break; case 2: //float NSLog(@"Saving floating value"); [aDiveSite setValue:[NSNumber numberWithFloat:aString.floatValue] forKey:editedFieldKey]; NSLog(@"Float set"); break; case 3: //Text view [aDiveSite setValue:aString forKey:editedFieldKey]; NSLog(@"Textview text saved"); default: break; } [self.tableView reloadData]; }

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  • App crashes every second time a tableview row is selected in navigation controller setup

    - by Thaurin
    Disclaimer first: I'm pretty new to Objective-C and the retain model. I've been developing in a garbage collected .NET environment for the last five years, so I've been spoiled. I'm still learning. I'm having my iPhone app crash with EXC_BAD_ACCESS. It happens in a navigtation controller/tableview setup. When I select a row the first time, no problems. It switches in the child controller without problems. I go back and select the same row again. Program then proceeds to crash. Every other row works fine, but every second time a row is accessed, it's a crash. I've pinpointed the location where this happens. The child controller (which is a class that I reuse for every row of the same type) that's being switched into has an array of NSString's representing the rows that will be displayed. I set it before pushing the child viewcontroller. It's there where this apparently happens. I'm having a hard time debugging this problem, still wrestling with xcode and all. I fear there may be some vital information missing here, but maybe there is something you recognize here.

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  • UINavigationController crashes after pushing 3 views onto stack

    - by joec
    I have a navigation controller, which has the following structure: Category Item Item Detail I can choose a category, and then choose an item to see its details. I can do this twice, i.e. go Back to the list of items and select another item. If i try this a third time, the app crashes, I get objc_msgSend in stack but thats all. But, instead of choosing another item, i go to the list of categories, and choose a different category, I can select two items in that category, before it crashes also. What would be causing this? Thanks

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  • Two Problems I'm having with UIButton and UIView.

    - by Andy
    Hi all, I haven't been programming on the iPhone for very long, but I'm picking it up slowly by googling problems I get. Unfortunately I haven't been able to find an answer for these. I have started a new View-based application in Xcode 3.2.2 and immediately added the following files: myUIView.m and myUIView.h, which are subclasses of UIView. In Interface Builder, I set the subclass of the default UIView to be myUIView. I made a button in the drawRect method. Problem one: The title of the button only appears AFTER I click the screen, why? Problem two: I want the button to produce the modalview - is this possible? The code is as follow: #import "myUIView.h" @implementation myUIView - (void)drawRect:(CGRect)rect { // Drawing code button = [UIButton buttonWithType:UIButtonTypeRoundedRect]; button.frame = CGRectMake(0,0,100,100); [button setTitle:@"butty" forState:UIControlStateNormal]; [button addTarget:self action:@selector(buttonPressed:) forControlEvents:UIControlEventTouchUpInside]; [self addSubview:button]; } -(void)buttonPressed:(id)sender{ NSLog(@"Button pressed"); //present modal view somehow..? } I can't see how to post attachments, but if anyone thinks it will help I can upload the source. Many thanks, Andy

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  • vs2010 wpf c#: how to get friends list from facebook? (Desktop application)

    - by Ash
    As per this link code from stack overflow i have try this code for getting friendslist but after login i got this error "requires valid signature" string APIKey = ConfigurationManager.AppSettings["API_Key"]; string APISecret = ConfigurationManager.AppSettings["API_Secret"]; Facebook.Session.ConnectSession connectsession = new Facebook.Session.ConnectSession(APIKey, APISecret); Facebook.Rest.Api api = new Facebook.Rest.Api(connectsession); var friends = api.Friends.GetLists(); foreach (var friend in friends) { System.Console.WriteLine(friend.name); } guide me to find out the solution Thanks ash

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  • I can't send gps values via the eclipse emulator control panel

    - by Janusz
    I try to send gps longitude and latitude to the android emulator with eclipse, but the values seem to never be set. Instead the onStatusChanged method of my listener is called. Edit I send those values through the emulator controls in the ddms view in eclipse. If I send data via telnet I get the correct data shown and the onLocationChanged method of my listener is changed.

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  • Objective-C Basic class related question, retaining the value of a specific object using a class fil

    - by von steiner
    Members, scholars, code gurus. My background is far from any computer programming thus my question may seems basic and somewhat trivial to you. Nevertheless it seems that I can't put my head around it. I have googled and searched for the answer, just to get myself confused even more. With that, I would kindly ask for a simple explanation suitable for a non technical person such as myself and for other alike arriving to this thread. I have left a comment with the text "Here is the issue" below, referring to my question. // character.h #import <Foundation/Foundation.h> @interface character : NSObject { NSString *name; int hitPoints; int armorClass; } @property (nonatomic,retain) NSString *name; @property int hitPoints,armorClass; -(void)giveCharacterInfo; @end // character.m #import "character.h" @implementation character @synthesize name,hitPoints,armorClass; -(void)giveCharacterInfo{ NSLog(@"name:%@ HP:%i AC:%i",name,hitPoints,armorClass); } @end // ClassAtLastViewController.h #import <UIKit/UIKit.h> @interface ClassAtLastViewController : UIViewController { } -(void)callAgain; @end // ClassAtLastViewController.m #import "ClassAtLastViewController.h" #import "character.h" @implementation ClassAtLastViewController - (void)viewDidLoad { //[super viewDidLoad]; character *player = [[character alloc]init]; player.name = @"Minsc"; player.hitPoints = 140; player.armorClass = 10; [player giveCharacterInfo]; [player release]; // Up until here, All peachy! [self performSelector:@selector(callAgain) withObject:nil afterDelay:2.0]; } -(void)callAgain{ // Here is the issue, I assume that since I init the player again I loss everything // Q1. I loss all the data I set above, where is it than? // Q2. What is the proper way to implement this character *player = [[character alloc]init]; [player giveCharacterInfo]; } Many thanks in advance, Kindly remember that my background is more related to Salmons breeding than to computer code, try and lower your answer to my level if it's all the same to you.

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  • Problem in getting response from webserver

    - by Amarpreet
    Hi guys I am sending data to webserver in the Querystrings by creating URL dynamically. When I view that URl in UIAlertView it shows me correct one. And when i try to get response using NSURL code, it does not respond. Below is the code. NSString *uu = @"http://www.zenhomeenergy.com/ZenIphoneServUpdate.aspx?CustomerID=12&FirstName=Andrew&LastName=Turner&State=SA&Street=60 Highfiled Drive Hillbank no phone number&PostCode=5112&Email= &Mobile= &HomePhone= &WorkPhone= &PrimaryResidence=True&HomeOwner=True"; NSString *text = [NSString stringWithContentsOfURL:[NSURL URLWithString:uu]]; if(text) { if([text isEqualToString:@"Success."]) { textView.text = [textView.text stringByAppendingString:@"Success.\n"]; } else { textView.text = [textView.text stringByAppendingString:@"Failed.\n"]; } } If you try putting the above URL into browser it says "Success." But the code above doesnot work. Please Help.

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  • EASY: How does one release memory correctly in the attached C array?

    - by Tricky
    Hi, I'm just trying to work out why the following code is leaking memory and I have a funny feeling that i'm not releasing the array memory correctly. This is a C function in a wider objective-c app and I'm not native to C... i've tried just using free() on the array, but have a feeling this isn't the whole story... Could someone have a look and see what I'm missing here. Thanks! CFIndex theNumberOfSettings = 3; CTParagraphStyleSetting theSettings[3] = { {kCTParagraphStyleSpecifierAlignment, sizeof(CTTextAlignment), &alignment}, {kCTParagraphStyleSpecifierLineSpacing, sizeof(lineSpacing), &lineSpacing}, {kCTParagraphStyleSpecifierHeadIndent, sizeof(headIndent), &headIndent} }; CTParagraphStyleRef theParagraphRef = CTParagraphStyleCreate(theSettings, theNumberOfSettings); CFAttributedStringSetAttribute(attrString, CFRangeMake(0, CFAttributedStringGetLength(attrString)-1), kCTParagraphStyleAttributeName, theParagraphRef); CFRelease(theParagraphRef); free(theSettings);

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  • drawRect is not refreshing the screen

    - by coure06
    I have this code in my drawRect method float aValue = .0167f; float fValue = 20; for(int i=1; i<=6; i++) { CGContextSelectFont(context, "Arial", fValue, kCGEncodingMacRoman); CGContextSetCharacterSpacing(context, 0); CGContextSetTextDrawingMode(context, kCGTextFill); NSString *hString = [[NSString alloc] initWithFormat:@"%i",i]; CGContextSetRGBFillColor(context, 1, 1, 1, aValue); CGContextShowTextAtPoint(context, i*25, i*16, [hString UTF8String], [hString length]); aValue += 0.167; fValue += 1; } I am calling a method using NSTimer like this staticTimer = [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(refreshUIView) userInfo:nil repeats:YES]; here is the refreshUIView -(void)refreshUIView { [self setNeedsDisplay]; } Problem is that drawRect is not clearing the screen, its just over writing what have been written last time on screen.

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  • I want to get the value from one class (SearchTableViewController.m) to another class (HistoryTableV

    - by ahmet732
    #import <UIKit/UIKit.h> @class SearchDetailViewController; @interface SearchTableViewController : UITableViewController <UISearchBarDelegate, UITableViewDelegate, UITableViewDataSource>{ IBOutlet UITableView *myTableView; NSMutableArray *tableData;//will be storing data that will be displayed in table. //Search array den buna aktarma yapcaz ilerde görceksin. NSMutableArray *searchedData;//will be storing data matching with the search string UISearchBar *sBar;//search bar NSMutableArray *searchArray; // It holds the medicines that are shown in tableview SearchDetailViewController * searchDetailViewController; NSMutableArray *deneme; } @property(nonatomic,retain)UISearchBar *sBar; @property(nonatomic,retain)IBOutlet UITableView *myTableView; @property(nonatomic,retain)NSMutableArray *tableData; @property(nonatomic,retain)NSMutableArray *searchedData; @property (nonatomic, retain) NSMutableArray *searchArray; @property (nonatomic, retain) SearchDetailViewController *searchDetailViewController; @property (nonatomic, copy) NSMutableArray *deneme; @end SearchTableViewController.m - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { // Navigation logic may go here. Create and push another view controller. // AnotherViewController *anotherViewController = [[AnotherViewController alloc] initWithNibName:@"AnotherView" bundle:nil]; // [self.navigationController pushViewController:anotherViewController]; // [anotherViewController release]; **deneme= [[NSMutableArray alloc]init]; deneme=[tableData objectAtIndex:indexPath.row];** ****NSLog(@"my row = %@", deneme);**// I holded one of the selected cells here** HistoryTableViewController.m - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { // Navigation logic may go here. Create and push another view controller. // AnotherViewController *anotherViewController = [[AnotherViewController alloc] initWithNibName:@"AnotherView" bundle:nil]; // [self.navigationController pushViewController:anotherViewController]; // [anotherViewController release]; **SearchTableViewController *obj= [[SearchTableViewController alloc]init];** **NSLog(@"my 2nd row= %@", [obj deneme]); //it prints nil** } My project is TabBar. There are two buttons on it- Search and History. I want to display selected items in a table in History tab. But i can not bring the selected item from SearchTableViewController.m to the class (HistoryTableViewController.m) The problem is : I can hold one of the selected items in an array (named deneme)from table in SearchTableViewController.m but i can not take it to HistoryTableViewController.m. It prints nil in console screen.... If I can make it visible in History class, I display those selected items on table. Please help me !!!

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  • Logging to a file on Android

    - by Greg B
    Is there any way of retrieving log messages from an Android handset. I'm building an application which uses the GPS of my HTC Hero. I can run and debug the application from eclipse but this isn't a good use case of GPS, sat at my desk. When I fire the app up when I am walking around, I get an intermittent exception. Is there anyway I can output these exceptions to a text file on the SD card or output calls to Log.x("") to a text file so that I can see what the exception is. Thanks EDIT : Solution Here is the code I finally went with... Thread.currentThread().setUncaughtExceptionHandler(new Thread.UncaughtExceptionHandler() { @Override public void uncaughtException(Thread thread, Throwable ex) { PrintWriter pw; try { pw = new PrintWriter( new FileWriter(Environment.getExternalStorageDirectory()+"/rt.log", true)); ex.printStackTrace(pw); pw.flush(); pw.close(); } catch (IOException e) { e.printStackTrace(); } } }); I had to wrap the line pw = new PrintWriter(new FileWriter(Environment.getExternalStorageDirectory()+"/rt.log", true)); in a try/catch as Eclipse would not let me compile the app. It kept saying Unhandled exception type IOException 1 quick fix Sorround with try/catch So I did and it all works which is fine by me but it does make me wonder what Eclipse was on about...

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  • How to rotate a UIImageView?

    - by jkally
    It's quite frustrating not to be able to do such a simple task: I have an "app" with a single viewcontroller, and in it a single UIImageView, that's initialized to a specific image at potrtait mode. Now when the iPhone gets roteated to landscape mode and the shouldAutorotateToInterfaceOrientation event fires, at which I return YES, my resulting UIImageView looks totally screwed up: either the image is stretched so to fill landscape mode frame (which looks ridiculuous of course) or the top and bottom of the image are cropped. How can I have my UIImageview and the contained image handle the device rotation gracefully, and display normal looking image at landscape mode as well?

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  • Running activity from remote service

    - by Moshik
    Hi, iam trying to run an activity from diffrent package from my remote service: this is how i implement the service.java ublic class CurrencyService extends Service { public class CurrencyServiceImpl extends ICurrencyService.Stub { int CALL_PUSH_SERVICE_ACTIVITY=10; @Override public void callSomeActivity(int activityId) throws RemoteException { Intent pushActivity=new Intent("com.pushservice.PushActivity"); pushActivity.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); startActivity(pushActivity); .. ive also added a line in the manifest of the service: the service works fine, but i cant run the activity - PushActivity which is in diffrent package of diffrent application, thanks.

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  • Is there an easy way to setup the android emulator to access the LAN of the host machine ?

    - by Longfield
    I would like to access a web service provided by one of the machines on my LAN from the android emulator. If the service was running on the same machine where the emulator is running (called host), I could add a network redirection and access the 10.0.2.2 (host loopback interface in the emulator) with the correct port. However it is running on another machine on the LAN. I guess I could add another redirection on the host additionally to the above one (would have to fight with iptables though ... ), but does a more simple solution exist ?

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