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  • UIImageView "Sprite Movement" How?

    - by Tate Allen
    Hi all, I am trying to make a game for the iPhone/iPod Touch. I am somewhat new to iPhone programming and extremely new to iPhone game programming so try to bear with me if this is a stupid question. How to I make my character, a UIImageView, move to the right or left, along the x axis. Just a simple translation across the screen. This is very frustrating so if you could link me to a tutorial or something like that, it would be much appreciated. Thanks in advance, Tate

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  • Good guidelines for developing an ecommerce application

    - by kaciula
    I'm making an ecommerce application on Android and, as it is my first serious project, I'm trying to figure out beforehand the best approach to do this. The application talks to a web service (magento api, meaning soap or xml rpc unfortunately) and gets all the content on the phone (product categories, product details, user credentials etc.). I think it should do lazy loading or something like that. So, I was thinking to keep the user credentials in a custom Object which will be kept in a SharedPreferences so that every Activity cand easily access it. I'll use a couple of ListViews to show the content and AsyncTask to fetch the data needed. Should I keep all the data in memory in objects or should I use some sort of cache or a local database? Also, I'm planning to use a HashMap with SoftReferences to hold the bitmaps I am downloading. But wouldn't this eat a lot of memory? How cand all the activities have access to all these objects (ecommerce basket etc.)? I'm thinking of passing them using Intents but this doesn't seem right to me. Can SharedPreferences be used for a lot of objects and are there any concurrency issues? Any pointers would be really appreciated. What are some good guidelines? What classes should I look into? Do you know of any resources on the Internet for me to check out?

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  • Button Application- iPhone Application

    - by Extremely frustrated
    I am a meganoob in iPhone Application programming. All I want to do is make an application with a single button. When you press the button, it plays an audio file. The button is just two images, one for the normal state and one for the pressed state. I have no clue how to get from point A to point B, it seems so straightforward in web design, why can't it be like that for this too? Anyone out there willing to drop some hints?

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  • Saving highscores coupled to a facebook account

    - by Eiko
    I want to offer a "highscore" list for friends in my app (at this point iPhone/iPad), so that if the user connected to facebook, he will get a list with his/her friends scores. Connecting is easy, retrieving friends is easy, but figuring out the best way to store the scores is not. As it seems I need to the store the scores on my own server server, no big deal. But what is considered a reasonable safe way to transfer the data? When communicating with facebook, authentication is clear - but communicating with my server basically anyone could post scores for another user if I send user id and score. Obfuscation might help a bit, but is there any better way to make sure that the data comes from the fb-logged-in person? Scores can also go down, so changing scores for other persons won't necessary help them. Thanks :)

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  • How can I run an app's source code that I got from the Android source code?

    - by Wesley
    For all of you android devs out there that have the Android simulator running on your comp, you know that there are a few built in apps that are already 'installed' on your phone. I had an idea for an app that would utilize a function that is already being done in the spare parts app. I went on to the android developer site, dug through the source code files, and found the spare parts app, and am now trying to set it up so that running it from eclipse on my machine actually runs the app in the simulator. In other words, I want to be able to make changes to and adjust some of the things in that app for my own needs. But it won't compile, because of a number of different errors. How do I get that source code running on my local machine? Is there some special trick that I just dont know about? I thought that if I could get the source code than the rest would be easy, but it isn't being too easy. Any help here would be appreciated!!

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  • Redirecting input to another view

    - by Jon
    My application is working fine on the normal iPad display, but I also need to output to VGA out. When I do this, I need to add the view to the external screen's window which seems to mean that I can't use it to accept input from the iPad screen. I want to redirect input from the iPad's window to the window displaying on the external screen. As far as I can tell there's no standard method of doing this. I've tried overriding hitTest on the iPad's window view to send it to the window on the external display, but the coordinates seem to get messed up in the process which makes it nigh unusable. I've also tried subclassing the iPad's UIWindow and catching events in sendEvent, then trying to send them to the external window, but this doesn't seem to work at all. Any help would be appreciated, I'm happy to post any code you would like to see. Thanks, Jon

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  • Can we ask user for credit card number or paypal details,store credit card number on our server, can

    - by Hiren Gujarati
    Can we get credit card number from user or paypal details & use them for premium service of our application ? is apple accept this application if we directly get this information & use it in our api on server for transaction. Using ssl will be accpted by apple ? I have check from 1) http://stackoverflow.com/questions/1763306/credit-card-purchase-of-physical-goods-via-an-iphone-application 2) http://stackoverflow.com/questions/1707701/receiving-payments-trough-paypal-and-credit-card 3) http://stackoverflow.com/questions/1366864/using-the-paypal-api-in-an-iphone-application but not clear about all...

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  • How do I add two alternating UITableViews to an existing UINavigationController view?

    - by Ron Flax
    I'm new to iPhone development and I am writing an iPhone app that needs two different table views, which are selectable using a button bar or tab bar. These table views are both the same size, but only cover about two thirds of the screen from the bottom up. The top portion of the screen remains the same when either of these tables is displayed. I'd also like to animate (flip) these views when the user selects one or the other. The view that these two tables will be displayed on is the detail view of my app where the user has already selected an item from the primary screen's table. I'm using a UINavigationController to manage the primary and detail views and I have this working. I also have the first of these two detail tables working as part of my detail view, but I think it makes more sense to isolate the code for these two tables and not duplicate all of the code for the part of the detail view that doesn't change. I don't really care how these two table views are created (either in code or via IB). I've tried several things and I can't seem to figure it out. Any help or ideas (with sample code) would be greatly appreciated!

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  • Moving between android activities on button clicks

    - by cppdev
    I am writing a android application where, on startup activity view, I have a button "DoIt". When user clicks "DoIt" button, I start another activity with different layout. On newly started activity, I have a button "Back" which should take me to the first activity. How to accomplish this. What code should I write on OnClick method of "Back" button. Also, I want the newly created activity to die after back button is pressed and application comes back to start-up activity.

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  • Get Object ID of UI element from code.

    - by andoriyu.mp
    I'm trying link 40 buttons to one event handler method and then do the processing work from one method instead of 40. I know how to link it but once I get there I don't know how to distinguish what button was pressed. Does anyone know how to reference the button object sender id or is there another way to solve this problem? Any help would be greatly appreciated.

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  • Keyboard blocking my view

    - by John Smith
    I have a UIView with another UIView inside it. On the inside UIView there is a textbox which I want to fill in. When I try to fill it in the keyboard blocks my view: The UIViewController has the following containerView = [[UIView alloc] initWithFrame:[UIScreen mainScreen].bounds]; self.view=containerView; //The apropriate releases etc are further on... When I touch it, the keyboard comes up as expected, but blocks the textbox I'm trying to fill in. How can I force the view to slide up? The front view OptionsFront * fv = [[OptionsFront alloc] initWithFrame:[UIScreen mainScreen].bounds]; [containerView addSubview:frontView]; In the front view is a subview CGRect bounds = CGRectMake(0.0f, 210.0f, 280.0f, 130.0f); sv = [[UIView alloc] initWithFrame:bounds]; [self addSubview:sv]; //added to frontView In sv is a textbox near the botton: rect = CGRectMake(70.0f, 20.0f, 100.0f, 27.0f); cf = [self createTextField_Rounded:rect holder:@"+ve"]; [sv addSubview:cf]; So cf happens to be near the bottom of the page. I expected that when I select it, the whole display would move up, but the keyboard just moves up and blocks it. What can I do? Appendix: - (UITextField *)createTextField_Rounded:(CGRect) frame holder:(NSString *) ph { UITextField *returnTextField = [[UITextField alloc] initWithFrame:frame]; returnTextField.borderStyle = UITextBorderStyleRoundedRect; returnTextField.textColor = [UIColor blackColor]; returnTextField.font = [UIFont systemFontOfSize:17.0]; returnTextField.delegate = self; returnTextField.keyboardType = UIKeyboardTypeNumbersAndPunctuation; returnTextField.returnKeyType = UIReturnKeyDone; returnTextField.clearButtonMode = UITextFieldViewModeWhileEditing; return returnTextField; }

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  • Android insert into sqlite database

    - by Josh
    I know there is probably a simple thing I'm missing, but I've been beating my head against the wall for the past hour or two. I have a database for the Android application I'm currently working on (Android v1.6) and I just want to insert a single record into a database table. My code looks like the following: //Save information to my table sql = "INSERT INTO table1 (field1, field2, field3) " + "VALUES (" + field_one + ", " + field_two + ")"; Log.v("Test Saving", sql); myDataBase.rawQuery(sql, null); the myDataBase variable is a SQLiteDatabase object that can select data fine from another table in the schema. The saving appears to work fine (no errors in LogCat) but when I copy the database from the device and open it in sqlite browser the new record isn't there. I also tried manually running the query in sqlite browser and that works fine. The table schema for table1 is _id, field1, field2, field3. Any help would be greatly appreciated. Thanks!

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  • Giving another object a NSManagedObject

    - by Wayfarer
    Alright, so I'm running into an issue with my code. What I have done is subclassed UIButton so I can give it some more infomormation that pertain to my code. I have been able to create the buttons and they work great. Capiche. However, one of the things I want my subclass to hold is a reference to a NSMangedObject. I have this code in my header file: @interface ButtonSubclass : UIButton { NSManagedObjectContext *context; NSManagedObject *player; } @property (nonatomic, retain) NSManagedObject *player; @property (nonatomic, retain) NSManagedObjectContext *context; - (id)initWithFrame:(CGRect)frame andTitle:(NSString*)title; //- (void)setPlayer:(NSManagedObject *)aPlayer; @end As you can see, it has a instance variable to the NSMangedobject I want it to hold (as well as the Context). But for the life of me, I can't get it to hold that NSManagedObject. I run both the @synthesize methods in the Implementation file. @synthesize context; @synthesize player; So I'm not sure what I'm doing wrong. This is how I create my button: ButtonSubclass *playerButton = [[ButtonSubclass alloc] initWithFrame:frame andTitle:@"20"]; //works playerButton.context = self.context; //works playerButton.player = [players objectAtIndex:i]; //FAILS And I have initilaized the players array earlier, where I get the objects. Another weird thing is that when it gets to this spot in the code, the app crashes (woot) and the the console output stops. It doesn't give me any error, and notification at all that the app has crashed. It just... stops. So I don't even know what the error is that is crashing the code, besides it has to do with that line up there setting the "player" variable. Thoughts and ideas? I'd love your wisdom!

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  • Need unicode characters in UITableView from SQLlite database

    - by Lee Armstrong
    I have some NSString varibales that incude items like Ð and Õ and if I do cell.textLabel.text = person.name; and if it contains one of those characters the cell.textlabel is blank! I have discovered that if I use NSString *col1 = [NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 0)]; To pull my data back it pulls back null, however using the deprectared method NSString *col1 = [NSString stringWithCString:(char *)sqlite3_column_text(compiledStatement, 0)]; Shows the characters! Any ideas?

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  • How to avoid piracy in iPhone apps by server side validation?

    - by prathumca
    As par my app requirement, there is a couple of scenarios that I need to handle. Scenario 1: To avoid piracy, I want to include some piece of code, whose job is sending both IMEI and Serial number of IPhone. Scenario 2: At server side, I've a database, which has a list of both IMEI and Serial No info. Here I wanna validate both IMEI and Serial numbers. If both are not matched then I can make sure that the app is pirated. Idea seems good. But I don't know how to handle these two scenarios in my app. Any help is greatly appreciated.

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  • How do I pass a bool into locationManager on iphone with stopUpdatingLocation?

    - by user295944
    I want to pass a flag into my location manager function - (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation so it will look like - (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation andTweet:(Bool *)tweet but it started with the command [locmanager stopUpdatingLocation]; So how can I pass the bool into the function?

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  • How to save objects using Multi-Threading in Core Data?

    - by Konstantin
    I'm getting some data from the web service and saving it in the core data. This workflow looks like this: get xml feed go over every item in that feed, create a new ManagedObject for every feed item download some big binary data for every item and save it into ManagedObject call [managedObjectContext save:] Now, the problem is of course the performance - everything runs on the main thread. I'd like to re-factor as much as possible to another thread, but I'm not sure where I should start. Is it OK to put everything (1-4) to the separate thread?

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  • android - looking for image that goes around a contact in the contacts aplication

    - by Gonzalo Perr
    Hi In the contacts app, from 2.0+ , in the list you can see a border around each contact image. (look at the image) http://thetech24.com/wp-content/uploads/2009/10/Google-Android-2_0_thetech24.com.jpg I have looked around the source code for the contacts app ( [http://android.git.kernel.org/?p=platform/packages/apps/Contacts.git;a=summary][1] ) but coundnt find it. Thanks [1]: http://android.git.kernel.org/?p=platform/packages/apps/Contacts.git;a=summary

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  • iPhone "touchesBegan" and "touchesMoved" message ... do not move to centre of touch

    - by Nippysaurus
    I am modifying the "MoveMe" example from the apple web site. When I get the "touchesMoved" message I move the centre of the target view to the centre of the touch. Is there a way that when the touch starts ("touchesBegan" message) I can remember the offset from the target view and keep that offset. Let me know if this is hard to understand and I will try to explain it a bit better.

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  • iPhone: Use a view as a transparent overlay with closing button

    - by axooh
    I've got a map with three bar buttons for different markers to show up in the map. If I click on a bar button, the specific markers are shown in the map, which already works great. Now I would like to show a transparent overlay (popup window) with the description of the markers after I clicked on a bar button with a button to close the overlay again and show the markers (which are set in the background). The function of the bar button: - (IBAction)routeTwo:(id)sender { // The code for the overlay // ... // remove any annotations that exist [map removeAnnotations:map.annotations]; // Add any annotations which belongs to route 2 [map addAnnotation:[self.mapAnnotations objectAtIndex:2]]; [map addAnnotation:[self.mapAnnotations objectAtIndex:3]]; [map addAnnotation:[self.mapAnnotations objectAtIndex:4]]; [map addAnnotation:[self.mapAnnotations objectAtIndex:5]]; } I tried the following possibilities: 1. Using a modal view controller RouteDescriptionViewController *routeDescriptionView = [[RouteDescriptionViewController alloc] init]; [self presentModalViewController:routeDescriptionView animated:YES]; [routeDescriptionView release]; Works great, but the problem is: The map view in the background is not visible anymore (configuring alpha values of the modal view doesn't change anything). 2. Add RouteDescriptionView as a subview RouteDescriptionViewController *routeDescriptionView = [[RouteDescriptionViewController alloc] init]; [self.view addSubview:routeDescriptionView.view]; [routeDescriptionView release]; Works great as well, but the problem here is: I can't configure a close button on the subview to close/remove the subview (RouteDescriptionView). 3. Using UIAlertView Would work as expected, but the UIAlert is not really customizable and therefore not suitable for my needs. Any ideas how to achieve this?

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