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  • How to rename an private file of my application?

    - by Ungureanu Liviu
    Hi! I want to rename an context private file created with openFileOutput() but I don't know how... I tried that: File file = getFileStreamPath(optionsMenuView.getPlaylistName()); // this file already exists try { FileOutputStream outStream = openFileOutput(newPlaylistName, Context.MODE_WORLD_READABLE); // i create a new file with the new name outStream.close(); } catch (FileNotFoundException e) { Log.e(TAG, "file not found!"); e.printStackTrace(); } catch (IOException e) { Log.e(TAG, "IO exception"); e.printStackTrace(); } Log.e(TAG, "rename status: " + file.renameTo(getFileStreamPath(newPlaylistName))); //it return true This code throw FileNotFoundException but the documentation said "Open a private file associated with this Context's application package for writing. Creates the file if it doesn't already exist." so the new file should be created on disk. The problem: When I try to read from the new renamed file I got FileNotFoundException! Thank you!

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  • handling broadcast reciver

    - by rayman
    Hi, I have an app which has MainActivity(without gui.. please just flow with it:) ) now this MainActivity running a service, this service using sendBroadcast() in order to comunnicate with the MainActivity.. now ofcourse i need to registerReceiver in the onResume() of the MainActivity. but i also need to add unregisterReceiver(receiver) in the onDestroy() of the MainActivity. problem is: when i first start that app i need it to up the service, and i dont want the user to lose focus, so i press finish() after i`am starting the service.. but then auto invoked also unregisterReceiver(receiver).. and this is not good for me.. i get error it's said it couldnt find any registerd reciver. so i fixed it by delete this line.. but i am sure its going to 'revenege' me in the future, when/where could i have problem if i wont use unregisterReceiver(receiver).. at the onDestroy() thanks, ray.

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  • Quartz 2D animating text?

    - by coure06
    i have to animate text around a circle. The text will also scale up/down. Whats the best approach to accomplish this? (i am using Quartz 2D) My approach is: -- Calculate point using sin and cos methods. -- Move Pen there and draw text with alpha and size. -- Clear the screen -- Calculate next point using sin and cos methods. -- Move pen there and draw text with alpha and size. -- clear the screen so on... any better way?

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  • How can I specify a dynamic height for an ImageView?

    - by kefs
    I have an ImageView at the top of my display that looks like the following: +----------------------------------------------+ ¦ ImageView +--------------+ ¦ ¦ ¦ ¦ ¦ ¦ ¦ Actual image ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ +--------------+ ¦ +----------------------------------------------+ Below this, I have a series of Buttons and TextViews.. I would like the ImageView's height to dynamically increase depending on the max height of the screen. I'm aligning the layout containing the buttons along the bottom of edge of the screen, and I would like the rest of the screen taken up by the above ImageView. Also, since the ImageView contains a centered image, I would also like to set min height, and a scrollbar if the screen is too small to display the imageview and the buttons below. Thanks! Is this possible?

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  • Finding user location before map loads

    - by 4thSpace
    I'm trying to find the user's location using: CLLocationCoordinate2D _location; CLLocation *userLoc = nil; if(appDelegate.clLocationManager.locationServicesEnabled){ userLoc = mapView.userLocation.location; _location = userLoc.coordinate; } The problem is that I haven't yet initialized the map so the above doesn't work. Is there a way to get the user's location without using mapkit? Or should I be using a different technique?

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  • UITableView scrollable background , UITableViewCell transparency

    - by f0rz
    Hi! In my UITableView I have custom cells. My UITableView have a repeatable background myTableView.backgroundColor = [UIColor colorWithPatternImage: [UIImage imageNamed: @"backg.png"]]; I set my cells to have their background (clear); UIView *backView = [[[UIView alloc] initWithFrame:CGRectZero] autorelease]; backView.backgroundColor = [UIColor clearColor]; cell.backgroundView = backView; This makes the cell have the same background as the TableView.. Problem is; That seems that every cell loads myTableView.backgroundColor once again. And the background are not being repeatble as it should. I want to have the cells totally with no background at all, instead they loads up myTableView.backgroundColor once again. Here is one example. Can anyone help me?

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  • On iPhone, how do I check once per day to see if i should phone-home?

    - by Jann
    I want to check a file on the server only once each day (NSURL). And, no matter if I fetch the file or not, I do not run the function (to check for the file) again that day. This would SEEM easy... but I forsee issues. Say I had created a directory under the mainBundle: "/Library/runOnceEachDay/". Perhaps I could write to /Library/runOnceEachDay/20100601 knowing that file would only exist if I already ran the function. If it does not exist, run the function and after the function is successful write a zero length file with the date as the filename. Then check before running that function for "mainBundle/Library/runOnceEachDay/YYYYMMDD" whereas YYYYMMDD is today's date. If that file exists, do not run. I could run a housecleaning routine to clean that directory once/week or something. Any better ideas? Thanks!

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  • Which JavaScript Libraries do not rely on a document and navigator object?

    - by Julian Weimer
    I'm currently looking for some libraries which might help me during iPhone Development using Appcelerator Titanium. I've heard that since version 1.0 it isn't dependant on webkit anymore and it makes app-development more exiting of course, please correct me if i'm wrong. As many people out there i love Javascript Frameworks such as JQuery and Mootools much, but they were build specifically to do a great job within a browser and most of the functionality is not needed within the environment Titanium now provides (DOM-Manipulation etc). Is there any other small library of useful functions i can use for development? Thx in advance.

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  • Unable to dismiss MFMailComposeViewController, delegate not called

    - by Rod
    HI, I am calling MFMailComposeViewController from UITableViewController. Problem is, delegate method mailComposeController:(MFMailComposeViewController)controllerdidFinishWithResult* is never called when I select Cancel or Send button in Mail compose window. Here is the table view class: @implementation DetailsTableViewController - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { if (indexPath.section==0 && indexPath.row==4){ //SEND MAIL MFMailComposeViewController *controller = [[MFMailComposeViewController alloc] init]; controller.mailComposeDelegate = self; if ([MFMailComposeViewController canSendMail]) { [controller setSubject:[NSString stringWithFormat:@"Ref %@",[item objectForKey:@"reference"]]]; [controller setMessageBody:@" " isHTML:NO]; [controller setToRecipients:[NSArray arrayWithObject:[item objectForKey:@"email"]]]; [self presentModalViewController:controller animated:YES]; } [controller release]; } } - (void)mailComposeController:(MFMailComposeViewController*)controllerdidFinishWithResult:(MFMailComposeResult)result error:(NSError*)error { // NEVER REACHES THIS PLACE [self dismissModalViewControllerAnimated:YES]; NSLog (@"mail finished"); } The application don't crash. After Cancel or Send button is presses Compose Window stays on the screen with buttons disabled. I can exit application pressing Home key. I am able to open other Modal Views form TableView but not MailCompose.

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  • automatically minimized chat tabs

    - by Xiang Ubao
    now I have a very urgent matter, ask for your help.Because we must call fu.init in hideFlashCallback to pause our game, When the user is in the another page to open chat tabs to our game, the game will pause automatically. Is there a method like FB API or something at the beginning of the loading game, automatically minimized chat tabs, so as to solve our problems.Hope you reply to us, help us to solve the problem. Thanks a million.

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  • App like default photo browser in iphone ?

    - by goeff27
    Hi All i am developing a app which contains feature like default photo browser in iphone. I done some what similar to that. but after loading some(near about 10-15) images from remote server,i am receiving memory warning.My requirement is loading image one by one. For this, on scroll view i am putting an images and increasing the contentSize of scroll view. it will work fine. but due to memory warning app quite. Guys, any have any idea to approach for this feature which work similar to photo app without problem? thanks in advance .

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  • Conditional interface programming for iPad?

    - by Fyrian
    Hi everyone! I'm working on an app for the iPad and am a little over my head with one issue. Is it possible to build an app for iPad that uses a function to control which interface layout is displayed? Something like "if these parameters are met, use XIB file "a" else use XIB file "b". I know that's not in any kind of legitimate format, but you get the idea. If this is possible, does anyone know of any tutorials on how to do it or sample code I could look at? Thanks!

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  • How to set an alarm to fire properly at fixed time?

    - by Pentium10
    I have this code Calendar c = new GregorianCalendar(); c.add(Calendar.DAY_OF_YEAR, 1); c.set(Calendar.HOUR_OF_DAY, 23); c.set(Calendar.MINUTE, 22); c.set(Calendar.SECOND, 0); c.set(Calendar.MILLISECOND, 0); // We want the alarm to go off 30 seconds from now. long firstTime = SystemClock.elapsedRealtime(); firstTime += 30*1000; long a=c.getTimeInMillis(); // Schedule the alarm! AlarmManager am = (AlarmManager)ctx.getSystemService(Context.ALARM_SERVICE); am.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP, c.getTimeInMillis(), 1*60*60*1000, sender); It is not executed at 23:22h What I am doing wrong? I noticed firstTime and c.getTimeInMillis() differs a lot in size and length. When I use firstTime, so when set to 30 seconds, the alarm is executed well.

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  • Cocos2d on iPhone: Using Sprites Defined in Separate Class Files.

    - by srikanth rongali
    I'm trying to draw two sprites on the same screen. I have defined the two sprite objects in two separate class files. If I comment out two lines (see "item 1" comment below) then I get a display as [a backgroundimage[background2.jpg] with a sprite[grossini.png] on the left side. If I uncomment the two lines I do not get the background image and sprite of (gameScreen.m). I get only the sprite [grossinis_sister1.png] defined in (enemy.m). But what I need is a [backgroundimage[background2.jpg]], sprite[grossini.png] and sprite [grossinis_sister1.png] in one screen. This is implementation file of my first class: #import "gameScreen.h" #import "enemy.h" @implementation gameScreen -(id)init { if((self = [super init])) { CCSprite *backGroundImage = [CCSprite spriteWithFile:@"background2.jpg"]; backGroundImage.anchorPoint = ccp(0,0); CCParallaxNode *voidNode = [CCParallaxNode node]; [voidNode addChild:backGroundImage z:-1 parallaxRatio:ccp(0.0f,0.0f) positionOffset:CGPointZero]; [self addChild:voidNode]; CGSize windowSize = [[CCDirector sharedDirector] winSize]; CCSprite *player = [CCSprite spriteWithFile:@"grossini.png"]; player.position = ccp(player.contentSize.width/2, windowSize.height/2); [self addChild:player z:0]; //eSprite = [[enemy alloc]init]; //<-- see item 1 //[self addChild:eSprite]; } return self; } This is my implementation file of my second class: #import "enemy.h" #import "gameScreen.h" @implementation enemy -(id)init { if ((self = [super init])) { CGSize windowSize = [[CCDirector sharedDirector] winSize]; CCSprite *enemySprite = [CCSprite spriteWithFile:@"grossinis_sister1.png" ]; enemySprite.position = ccp(windowSize.width/2, windowSize.height/2); [self addChild:enemySprite]; } return self; } @end

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  • RAM Questions in Iphone

    - by senthilmuthu
    Hi, Every RAM must have stack and heap (like CS,ES,DS,SS 4 segments).but is there like stack size in iphone,is only heap available?some tutorial say when we increase stack size , heap will be decreased,when we increase heap size ,stack will be decreased ...is it true..? or fixed stack size or fixed heap size ? any help please? Based on processor,will be segments changed?is there no need to have 4 segements for all processors?IF RAM does not have stack ,heap, where is it? IF RAM does not have stack ,heap ,where the heap and stack is managed?

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  • iphone getting hours/min/seconds app crashes.

    - by coure06
    i have this code in my overridden drawRect method NSDate *date = [NSDate date]; NSCalendar *calendar = [NSCalendar currentCalendar]; unsigned int unitFlags = NSHourCalendarUnit|NSMinuteCalendarUnit|NSSecondCalendarUnit; NSDateComponents *comp = [calendar components:unitFlags fromDate:date]; NSInteger h = [comp hour]; NSInteger m = [comp minute]; NSInteger s = [comp second]; NSLog(@"%i,%i,%i", h,m,s); NSLog(@"test"); [date release]; [calendar release]; [comp release]; I am calling drawRect using setNeedsDisplay from my custom method (timer based after each 1 secon). It runs only once and then app exit automatically. If i comment out all the code and just write NSLog(@"test"); then application works ok, it logs "test" after each 1 sec.

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  • UIGraphicsBeginImageContext question in Objective C

    - by Henry D'Andrea
    I need the UIGraphicsBeginImageContext(self.view.frame.size); changed to where the .frame part pulls from webView - (void) save { UIGraphicsBeginImageContext(self.view.frame.size); [self.view.layer renderInContext:UIGraphicsGetCurrentContext()]; UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); UIImageWriteToSavedPhotosAlbum(viewImage, nil, nil, nil); NSLog(@"TEST"); } WEBVIEW CODE: -(BOOL) webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)ntype { NSLog(@"Scheme: %@", request.URL.scheme); if ([request.URL.scheme isEqualToString:@"save"]) { [self save]; } return true; }

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  • UISegmentedControl - how to toggle between 2 UITableViews

    - by embedded
    I have a tab bar based application. What is the best way to toggle between 2 different UITableView views? Should I use a wrapper view and add those 2 views to it and depending on which segment was chosen I will show the correct view? Using only one tableView will not work because the layout is different between those 2 tableviews. Thanks

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