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  • Adding back button to navigation bar

    - by 4thSpace
    I've added a navigation bar to a UIViewController. It is displayed from another UIViewController only. I'd like to have a left side back button that is shaped similar to an arrow, just like the normal navigation bar back button. It seems I can only add a bar button through IB. I'm guessing the back button needs to be added programmatically. Any suggestions on how I should do this?

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  • fill UIWebVIew TextInput with custom keyboard

    - by user319097
    For an app I am working on I want a custom keyboard to come up when you tap on an input field in a UIWebview, for example for UITextView i use this code : myText.text = [myText.text stringByAppendingString:@"a"]; but i don't know how can i fill a text field in UIWebVIew Any help would be very much appreciated; thanks!

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  • Selection on table view causes parent view to change

    - by Tereno
    Hi there, I'm working on an iPad app and here's my scenario: I have a view which contains a table view inside of it. When the user selects an item on the table view, I would like the parent's view to change in a navigational manner. For those of you that have an iPad, this would be akin to the "Settings" app. But I guess in the "Settings" app, the right pane is composed of a grouped table view right? Is what I'm trying to do possible? Thanks

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  • Masking to Transparent returns empty image

    - by Tibi
    Hi there, I'm trying to put white color in my images to transparent with the following code. Problem is that "CGImageRef maskedTransparent" is blank. I don't understand because the code I'm using is nearly a copy paste from the doc ... Any idea ? (UIImage*) maskImage:(UIImage *)image withMask:(UIImage *)maskImage { CGImageRef maskRef = maskImage.CGImage; CGImageRef mask = CGImageMaskCreate(CGImageGetWidth(maskRef), CGImageGetHeight(maskRef), CGImageGetBitsPerComponent(maskRef), CGImageGetBitsPerPixel(maskRef), CGImageGetBytesPerRow(maskRef), CGImageGetDataProvider(maskRef), NULL, false); CGImageRef masked = CGImageCreateWithMask([image CGImage], mask); //Array defining min & max RGB values to be transformed to transparent colors. float maskingMinMax[6] = {255, 255, 255, 255, 255, 255}; //masking image to remove range in maskinLinMax CGImageRef maskedTransparent = CGImageCreateWithMaskingColors(masked, maskingMinMax); return [UIImage imageWithCGImage:maskedTransparent]; }

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  • how to change the game developed in iphone to ipad ?

    - by srikanth rongali
    I have developed a game for iPhone using coco2d 0.99.3. I want it to work on iPad. I have the new images which are bigger in size and resolution than iPhone images. I replaced the images and checked, but the image is appearing only in iPhone simulator which is inside the iPad simulator. What changes shall I make ? Thank You.

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  • changing sounds when objects meet

    - by blacksheep
    i'd like to change sounds when tapping on an image and drag another image over several others. it is not working properly: the "MoveImage" is not dragable, the tapping is working outside the "TouchImage" and the sounds do not change when tapping on it. (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{ UITouch *touch = [[event allTouches] anyObject]; CGPoint location = [touch locationInView:touch.view]; if(((CGRectContainsPoint(myTouchImage.frame, location)), (CGRectIntersectsRect(myMoveImage.frame,myImage_1.frame)))) { [sound_E play]; } if (((CGRectContainsPoint(myTouchImage.frame, location)), (CGRectIntersectsRect(myMoveImage.frame,myImage_2.frame)))) { [sound_F play]; } if (((CGRectContainsPoint(myTouchImage.frame, location)), (CGRectIntersectsRect(myMoveImage.frame,myImage_3.frame)))) { [sound_D play]; } if (((CGRectContainsPoint(myTouchImage.frame, location)), (CGRectIntersectsRect(myMoveImage.frame,myImage_4.frame)))) { [sound_Dis play]; } } (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { UITouch *touch = [[event allTouches] anyObject]; CGPoint location = [touch locationInView:touch.view]; if (CGRectContainsPoint(myMoveImage.frame, location)){ CGPoint yLocation = CGPointMake(myMoveImage.center.x,location.y); myMoveImage.center = yLocation; } if(CGRectIntersectsRect(myMoveImage.frame,myImage_1.frame)) { E_NOTE.text = @"E"; } if(CGRectIntersectsRect(myMoveImage.frame,myImage_2.frame)) { F_NOTE.text = @"F"; } if(CGRectIntersectsRect(myMoveImage.frame,myImage_3.frame)) { D_NOTE.text = @"D"; } if(CGRectIntersectsRect(myMoveImage.frame,myImage_4.frame)) { Dis_NOTE.text = @"D#"; } }

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  • Setting Grouping in UITableView under UINavigationController

    - by climbon
    In my UINavigationController app, my first view is a UITableView. I can't seem to find a way to set the property of this UITableView to 'grouped'. Since UITableView is dynamically generated I don't have the luxury of Interface Builder. Searched forums here and googled other places and closest I saw was to override either initWithStyle or initWithCoder as follows. (id)initWithStyle:(UITableViewStyle)style { if (self = [super initWithStyle:UITableViewStyleGrouped]) { } return self; } However this above function never gets called. when I overrided initWithCoder I could see it worked and I was able to change UITableView contents to grouped. But then title automatically became 'Root View Controller' and none of the cells were active anymore although they got grouped fine. That is while they looked active but if you click on them, those cells won't do anything. But I have seen apps which have their very first view being UITableView is grouped. So there must be a way to do it but I don't know how.

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  • How much difference you find between scrollview offset and contentview offset of table?

    - by neha
    Hi all, In my application, I want to detect the end of the entire table with scrollview. Since there're no sections in my scrollview, I'm using noOfRows*rowHeight to reach the end. I'm using scrollview.contentOffset.y to detect the y offset, but this contentOffset isn't matching the multiplication result i.e. I have 20 rows and with height as 250. So it comes as 5000, but my scrollview.offset.y at the end of last cell is nearly about 4650. What's this difference? Thanx in advance.

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  • NavBar displaying back twice when app changed to landscape mode

    - by Graeme
    Hi, Not sure what's going on here, but my iPhone apps nav bar shows back and the title of my detail view controller even when I'm back to the original view. It wasn't happening earlier, it has changed recently (but not sure when exactly). E.g. I click on a row, view the didSelectRow XIB and then click back on the NavBar controller, but it still shows back even though the view does change back to the original table view. I then have to press back again and then it clears. Update: It's as if its trying to go back three times instead of two. Because, if you visit another row without removing the back button, it stores it as if you need to go back twice. It works fine in portrait mode. Any ideas?

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  • How to show a video stored on server on iphone

    - by Amitkumar
    Hi, I have a query regarding showing a video (which is stored on server) on iPhone. I want show a video in an iPhone Application. This is not live streaming. So how the video can be shown? I have read the Apple's documentation for HTTP streaming of video. Do I need to call a Web Service? Is there any tutorial for this? Thanks in advance..

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  • OpenGL ES - how to keep some object at a fixed size?

    - by OMH
    I'm working on a little game in OpenGL ES. In the background, there is a world/map. The map is just a large texture. Zoom/pinch/pan is used to move around. And I'm using glOrthof (left, right, bottom, top, zNear, zFar) to implement the zoom/pinch. When I zoom in, the sprites on top of the map is also zoomed in. But I would like to have some sprites stay at a fixed size. I could probably calculate a scale factor, depending on the parameters to glOrthof, but there must be a more natural and straightforward way of doing that, instead of scaling the sprites down when I zoom in. If I add some text or some GUI elements on top of the map, they should definately have a fixed size. Is there a solution to do this, or do I have to leave fixed values in glOrthof and implement zoom/pinch in another way? EDIT: To be more clear: I want sprites that zoom in/out along with the map, but stay at the same size. I have some elements that are like the pins on the iPhone's map application. When you zoom, the pins stay the same size, but move around on the screen to stay on the same spot on the map. That is mainly what I want a solution for. Solutions for this already came below, thanks!

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  • Why doesn't this UIButton show its text label?

    - by Dan Ray
    Everything about this UIButton renders great except the text that's supposed to be on it. NSLog demonstrates that the text is in the right place. What gives? UIButton *newTagButton = [UIButton buttonWithType:UIButtonTypeRoundedRect]; [newTagButton addTarget:self action:@selector(showNewTagField) forControlEvents:UIControlEventTouchUpInside]; newTagButton.titleLabel.text = @"+ New Tag"; NSLog(@"Just set button label to %@", newTagButton.titleLabel.text); newTagButton.titleLabel.font = [UIFont systemFontOfSize:17]; newTagButton.titleLabel.textColor = [UIColor redColor]; CGSize addtextsize = [newTagButton.titleLabel.text sizeWithFont:[UIFont systemFontOfSize:17]]; CGSize buttonsize = { (addtextsize.width + 20), (addtextsize.height * 1.2) }; newTagButton.frame = CGRectMake(x, y, buttonsize.width, buttonsize.height); [self.mainView addSubview:newTagButton];

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  • Core Data: fetch an NSManagedObject by its properties

    - by niklassaers
    Hi guys, I have an object NetworkMember that has no attributes but is defined by its relationships Person, Network, Level and Role. In my app, I've found all the four relationships, but I want to make sure not to double-register my NetworkMember, thus I'd like to search for this NSManagedObject before instantiating it. How should I write a query that queries for an NSManagedObject just consisting of relationships? Cheers Nik

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  • SqlLite for iPhone issues/bugs/problems ?

    - by jAmi
    Hey there, I am planning to develop an iPhone application heavily relying on sqlite DB , from different links I have gone through this seems to be a great tool and has some really good support. As my app is still in the planning process I would like to ask if there are any Issues with SQLlite database ? from memory management to Queries and data sizes and multiple access etc; Please share your experience using SQLite DB in iPhone and what problems did you face? I just want to make a note of these exceptions so that I may plan my App well and do not have any issues raised in the middle of the development process. Thanx for your contribution.

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  • Rotation of ViewController in TabbarController

    - by hanno
    I have a custom UIViewController in a UITabbarController and want to respond to rotation events. When a rotation occurs, the tabbarcontroller and the viewcontroller get rotated. However, the view in the viewcontroller doesn't get redrawn properly: the layout doesn't autoresize and it is black on parts of the screen. The strange thing is that it works when I go to another tab and the back again to my original viewcontroller. What could possibly be wrong? I checked that didRotateFromInterfaceOrientation:fromInterfaceOrientation is being called. However, the view.frame.size values are still the old ones from before the rotation. That's probably not correct.

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  • Email from an app, but not use a a pop up controller, just text inside a text box.

    - by Sam Jarman
    Hey is there any way to send whats in a text view (im trying to make a suggestion box) to my email address? example user types in the box " I think you should add twitter support" then that is sent in the background to my email address [email protected] then a message is popped up on the screen saying "suggestion sent" just an example of what i mean Any ideas, tutorial links would be greatly appreciated guys Thanks

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  • How does Twitter for iPhone bookmarklet work?

    - by Igor Zevaka
    Twitter client (formerly Tweetie) allows you to define a bookmarklet in Safari that launches the app. I want to know which iPhone API allows you to register the protocol specifier (or whatever it's called) - in this case "tweetie:" - in order for this bookmarklet to work. The instructions can be found here and the bookmarklet itself is below. javascript:window.location='tweetie:'+window.location Clicking the above bookmark is the same as typing in "tweetie:http://google.com" into the address bar. This is obviously supported on the OS/Browser level, much the same as tel: URIs. Am I correct in understanding that developers can add arbitrary URI protocol specifiers as a part of app installation?

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