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  • How to implement UIViewController rotation in response to orientation changes?

    - by Greg Maletic
    My app has about 10 different UIViewControllers, just one of which I want to switch to landscape mode if the device is rotated. (All the rest, I want to keep in portrait.) In order to implement rotation on that one view, I needed to implement its controller's 'shouldAutorotate' method and return YES. Since this view is accessed via a navigation controller, I also needed to create a subclass of UINavigationController that implements 'shouldAutorotate' and return YES. This solution works, but too well. I find that all of the UIViewControllers I push onto my subclass of UINavigationController respond to rotation, even if I implement 'shouldAutorotate' and return NO. (Remember: I only want one particular UIViewController to respond to rotation, not every one in the navigation controller's stack.) So, my question is: how do I best do this? All the solutions I can come up with seem 1) cumbersome, and 2) worse, don't seem to work. Thanks very much.

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  • Android customizing ViewFlipper...

    - by wearysamurai
    So I'm having pretty much exactly the problem described here: http://code.google.com/p/android/issues/detail?id=6191 and until the ViewFlipper issue in 2.1 and 2.2 has been resolved, I'm attempting to customize my own ViewFlipper in the manner described: @Override protected void onDetachedFromWindow() { try { super.onDetachedFromWindow(); } catch (IllegalArgumentException e) { // Call stopFlipping() in order to kick off updateRunning() stopFlipping(); } } But I've never done this sort of thing before and am hoping to get a little guidance (as my own efforts are coming up short). Here's what I have so far. FixedFlipper.java: import android.content.Context; import android.util.AttributeSet; import android.widget.ViewFlipper; public class FixedFlipper extends ViewFlipper{ public FixedFlipper(Context context){ super(context); } public FixedFlipper(Context context, AttributeSet attrs){ super(context, attrs); } @Override protected void onDetachedFromWindow(){ try{ super.onDetachedFromWindow(); }catch(Exception e){ super.stopFlipping(); } } } main.xml: <com.site.TestApp.FixedFlipper style="@style/body" android:id="@+id/flipper"> ... </com.site.TestApp.FixedFlipper> And in my activity, I invoke it like so: FixedFlipper flipper = (FixedFlipper)findViewById(R.id.flipper); It seems like it should be pretty straightforward, but I keep getting this: Binary XML file line #4: Error inflating class com.site.TestApp.FixedFlipper I appreciate any suggestions. I've been chasing my tail for hours trying to figure out what piece of the puzzle I'm missing.

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  • How do I code a green button in UIActionSheet?

    - by Joshua
    I am using the code: { randomstatus=0; msg=[[NSString alloc]initWithFormat:@"Good job, do you want to continue?"]; UIActionSheet *actionSheet=[[UIActionSheet alloc]initWithTitle:msg delegate:self cancelButtonTitle:@"No" destructiveButtonTitle:@"Yes" otherButtonTitles:nil]; [actionSheet showInView:self.view]; [actionSheet release]; [msg release]; } I don't want to change the code, but I need the "destructiveButton" to be green instead of red. Is this possible, or do i need to use a different button?

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  • Adding UIBarButtonItem to UINav..Controller

    - by mlecho
    i am not sure what i am missing here. I Have a custom UINavigationController and i am trying to add a persistant UIBarButtonItem to the bar. -(void)viewDidLoad { self.navigationBar.barStyle = UIBarStyleBlack; UIBarButtonItem *bbi = [[UIBarButtonItem alloc] initWithTitle:@"Nope..." style:UIBarButtonItemStyleBordered target:self action:@selector(goBack:)]; self.navigationItem.leftBarButtonItem =bbi; [bbi release]; } -(void)goBack:(id)sender { NSLog(@"go back now"); } what am i missing here? - BTW, i do not want to/ will not use IB.

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  • Using CATransition in a viewController

    - by eco_bach
    Hi I'm trying to implement the ViewTransitions code sample from Apple, but putting all the logic in my viewController instead of my applicationDelegate class. I'm getting a bizarre error when I try to compile. I'm importing QuartzCore in my viewcontroller implementation as #import _kCATransitionFade", referenced from: _kCATransitionFade$non_lazy_ptr in ViewTransitionsAsViewControllerViewController.o (maybe you meant: _kCATransitionFade$non_lazy_ptr) Anyone have any ideas?

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  • How listen for UIButton state change?

    - by morticae
    I'm extending UIButton with generic functionality to change certain appearance attributes based on the displayed title. In order to do this, I need to detect and respond to changes in the "state" property. This is so I make sure the appearance is adjusted properly if the user has set different titles for different states. I assumed I would need to use some sort of KVO like the following: [self addObserver:self forKeyPath:@"state" options:NSKeyValueObservingOptionNew context:nil]; But this does not seem to fire the observeValueForKeyPath:... method for @"state" or @"currentTitle". I assume this is because UIButton does not implement the KVO pattern for those properties. I do not want to just listen for clicks. Those events cause a state change, but are not the only potential causes. Does anyone know a way to listen to and respond to state changes of a UIButton? Thanks

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  • Casting and getting values from date picker and time picker in android

    - by Rahul Varma
    Hi , I have a date picker and a time picker in my app. Can anyone tell me how to get the values of the date and time that are selected??? What i mean to say is, for EditText we can declare as final EditText Name = (EditText) this.findViewById(R.id.nametext); and we can cast the data of it by using Name.getText().toString(). So similarly how can we get the values of date picker and time picker to a string???

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  • Apple push notifications could not receive size of message error

    - by embedded
    I'm trying to send some push notification message to my App using the sandbox option. I'm getting those messages on my console: Sun Apr 25 21:56:22 unknown /usr/libexec/notification_proxy[57] : Could not receive size of message Sun Apr 25 21:56:22 unknown /usr/libexec/notification_proxy[57] : Could not receive message How do I resolve this? Thanks

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  • How to linebreak long string constructs ?

    - by iFloh
    I am editing SQLite SQL statements of substantial length. How can I break these into several lines to allow comfortablt editing? const char *sql = "SELECT arguments arguments arguments arguments arguments arguments arguments arguments arguments arguments FROM a, b, WHERE condition condition condition condition condition condition condition" into const char *sql = "SELECT arguments arguments arguments arguments arguments arguments arguments arguments arguments arguments FROM a, b WHERE condition condition condition" cheers

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  • Initialize preferences from XML in main Activity

    - by pixel
    My problem is that when I start application and user didn't open my PreferenceActivity so when I retrieve them don't get any default values defined in my preference.xml file. preference.xml file: <?xml version="1.0" encoding="utf-8"?> <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" android:key="applicationPreference" android:title="@string/config" > <ListPreference android:key="pref1" android:defaultValue="default" android:title="Title" android:summary="Summary" android:entries="@array/entry_names" android:entryValues="@array/entry_values" android:dialogTitle="@string/dialog_title" /> </PreferenceScreen> Snippet from my main Activity (onCreate method): SharedPreferences appPreferences = PreferenceManager.getDefaultSharedPreferences(this); String pref1 = appPreferences.getString("pref1", null); In result I end up with a null value.

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  • NSURLConnection request seems to disappear into thin air

    - by ibergmark
    Hi Everybody! I'm having trouble with a NSURLConnection request. My app calls a routine called sayHello to identify a user's device. This code works fine for all devices I've tested it on, but for some devices the request just seems to disappear into thin air with no errors or popups on the device. One specific device that fails is an iPod Touch 2G running OS 3.1.3. The app start's fine and doesn't crash, and none of my error popup messages are displayed. I just can't understand why my server never receives the request since the call to initWithRequest returns a pointer. Any help is much appreciated. Thanks. Here's the relevant header info: @interface Globals : NSObject { UserItem *userData; NSURLConnection *urlConnection; NSString *imageCacheLocation; NSOperationQueue *opQueue; } Here's the implementation of sayHello: - (void)sayHello:(BOOL)updateVisits; { NSString *updString; if (updateVisits) updString = @"Y"; else updString = @"N"; NSDictionary *dataDict = [[NSDictionary alloc] initWithObjectsAndKeys: [[UIDevice currentDevice] uniqueIdentifier], @"id", kProgVersion, @"pv", @"1", @"pr", userData.tagID, @"tg", updString, @"uv", nil]; NSString *urlString = [[NSString alloc] initWithString:kHelloURL]; urlConnection = [self localPOST:dataDict toUrl:urlString delegate:self]; [dataDict release]; [urlString release]; } - (NSURLConnection *)localPOST:(NSDictionary *)dictionary toUrl:(NSString *)urlString delegate:(id)delegate { NSString *myBounds = [[NSString alloc] initWithString:@"0xKmYbOuNdArY"]; NSMutableData *myPostData = [[NSMutableData alloc] initWithCapacity:10]; NSArray *formKeys = [dictionary allKeys]; for (int i = 0; i < [formKeys count]; i++) { [myPostData appendData:[[NSString stringWithFormat:@"--%@\n", myBounds] dataUsingEncoding:NSUTF8StringEncoding]]; [myPostData appendData:[[NSString stringWithFormat: @"Content-Disposition: form-data; name=\"%@\"\n\n%@\n", [formKeys objectAtIndex:i], [dictionary valueForKey:[formKeys objectAtIndex:i]]] dataUsingEncoding:NSUTF8StringEncoding]]; } [myPostData appendData:[[NSString stringWithFormat:@"--%@--\n", myBounds] dataUsingEncoding:NSUTF8StringEncoding]]; NSURL *myURL = [[NSURL alloc] initWithString:urlString]; NSMutableURLRequest *myRequest = [[NSMutableURLRequest alloc] initWithURL:myURL cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:30]; NSString *myContent = [[NSString alloc] initWithFormat: @"multipart/form-data; boundary=%@", myBounds]; [myRequest setValue:myContent forHTTPHeaderField:@"Content-Type"]; [myRequest setHTTPMethod:@"POST"]; [myRequest setHTTPBody:myPostData]; NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:myRequest delegate:delegate]; if (!connection) { [[Globals sharedGlobals] showAlertWithTitle: NSLocalizedString( @"Connection failed", @"alert title - connection failed") message: NSLocalizedString( @"Could not open a connection.", @"alert message - connection failed")]; } [myBounds release]; [myPostData release]; [myURL release]; [myRequest release]; [myContent release]; return connection; } - (void)handleNetworkError:(NSError *)error { if (networkErrorAlert) return; networkErrorAlert = YES; [[Globals sharedGlobals] showAlertWithTitle: NSLocalizedString( @"Network error", @"alert title - network error") message: [NSString stringWithFormat: NSLocalizedString( @"This app needs a network connection to function properly.", @"alert message - network error")] otherButtons:nil delegate:self]; } - (void) connectionDidFinishLoading:(NSURLConnection *)connection { [urlConnection release]; urlConnection = nil; } - (void) connection:(NSURLConnection *)connection didFailWithError:(NSError *)error { [self handleNetworkError:error]; [urlConnection release]; urlConnection = nil; }

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  • CGContext rotation

    - by kasperjj
    I have a 100x100 pixel image that I want to draw at various angles rotated around the center of the image. The following code works, but rotates around the original origo of the coordinate system (upper left hand corner) and not the translated location. Thus the image is not rotated around itself but around the upper left corner of the screen. CGContextRef context = UIGraphicsGetCurrentContext(); CGContextTranslateCTM(context, -50, -50); CGContextRotateCTM (context, 0.3); CGContextTranslateCTM(context,768/2,1024/2); [image drawAtPoint:CGPointMake(0,0)]; I tried doing the same using CGAffineTransform, but got the same results.

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  • What library is used for the main menu in the facebook iOS app?

    - by Seth
    I'm making an app that has more options than will easily fit into a UITabBarController. I wanted to use something like what the facebook app has for its main menu. My guess is that it isn't proprietary to facebook, because the SCVNGR app uses something similar. This library lets you re-order the icons the way you can re-order the apps from the main menu (i.e. press and hold - icons jiggle - you can drag them around). Does anyone know what library provides this UIView? I'd like to use it if possible. Thanks!

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  • How to write text(using CGContextShowTextAtPoint) dynamically near graph x and y-axis intervals?

    - by Rajendra Bhole
    I developed graph using NSObject class and using CGContext method. The following code displaying dynamically in X and Y-axis intervals, CGContextSetRGBStrokeColor(ctx, 2.0, 2.0, 2.0, 1.0); CGContextSetLineWidth(ctx, 2.0); CGContextMoveToPoint(ctx, 30.0, 200.0); CGContextAddLineToPoint(ctx, 30.0, 440.0); for(float y = 400.0; y >= 200.0; y-=30) { CGContextSetRGBStrokeColor(ctx, 2.0, 2.0, 2.0, 1.0); CGContextMoveToPoint(ctx, 28, y); CGContextAddLineToPoint(ctx, 32, y); CGContextStrokePath(ctx); //CGContextClosePath(ctx); } CGContextMoveToPoint(ctx, 10, 420.0); CGContextAddLineToPoint(ctx, 320, 420.0); //CGContextAddLineToPoint(ctx, 320.0, 420.0); //CGContextStrokePath(ctx); for(float x = 60.0; x <= 260.0; x+=30) { CGContextSetRGBStrokeColor(ctx, 2.0, 2.0, 2.0, 1.0); CGContextMoveToPoint(ctx, x, 418.0); CGContextAddLineToPoint(ctx, x, 422.0); CGContextStrokePath(ctx); CGContextClosePath(ctx); } I want to write the dynamic text on the X and Y-axis lines near the intervals (like X-axis is denoting number of days per week and Y-axis denoting something per someting)? Thanks.

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  • How to flip the origin.y of an CGRect?

    - by mystify
    I'm trying to draw an UIImageView, but the frame's origin is wrong when I flip the coordinate system for drawing not upside-down. CGRect imgRect = imgView.frame; imgRect.origin.y += 10.0f; CGContextTranslateCTM(context, 0.0f, imgRect.size.height); CGContextScaleCTM(context, 1.0f, -1.0f); CGContextDrawImage(context, imgRect, imgView.image.CGImage); like you can see I move the image down by 10, but instead of going down by 10, it goes UP by 10. That's completely unlogical since I had actually inverted the wrong coordinate system to look exactly like the one in UIView, right? What to do about it?

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  • Adding a UIBarButtonItem to a programattically allocated UINavigationBar

    - by iamdadude
    I have a cameraoverlayview that allocates a UINavigationBar to the top of the screen like this - CGRect navbarFrame = CGRectMake(0, 0, 320, 44); navigationBar = [[UINavigationBar alloc] initWithFrame:navbarFrame]; navigationBar.delegate = self; Now I want to add a UIBarButtonItem as the left button to the navigation bar, but the standard navigationbar.leftitem doesn't work. So I tried doing this - closebutton = [[UIBarButtonItem alloc] initWithTitle:closebuttontext style:UIBarButtonItemStylePlain target:self action:@selector(close)]; navigationBar.topItem.leftBarButtonItem = closebutton; But it doesn't work either. Can anyone point me in the right direction? As far as the navigation bar loading up correctly in the cameraoverlayview, it works 100%.

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  • Need to Release UIWebView Delegate?

    - by Chris
    I have a UIWebView named wView. I want to use webViewDidFinishLoad: in my class, so I am setting the class as the delegate for wView by using this line: wView.delegate = self; Everything loads properly, but when I close the UIWebView, the App crashes. If I comment out the wView.delegate = self, it works and does not crash, but then I can't use webViewDidFinishLoad: - any ideas? Do I need to release something?

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  • is there a default back key(on device) listener in android???

    - by androidbase Praveen
    hi all, i am having two activities A and B. when i click the button in A that will shows B. when i click the Button in B it backs to A. i had set the overridePendingTransition method after the finish() method. it works properly. but in case the current Activity is B. on that time i click the default back button in the device. it shows the right to left transition to show the Activity A. how i can listen that Default back key on device.?????

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