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  • Pushing UIViewController onto a UINavigationController

    - by Gregg
    The other day I asked about using a UINavigationController as a child of a UIViewController. I got that working via the answer. Now what I'm trying to do is push a controller onto the nav stack. When a table cell is touched, I do the following: - (void) showSetup { NSLog(@"Showing Setup"); SetupViewController *controller = [[SetupViewController alloc]initWithNibName:@"SetupViewController" bundle:nil]; self.setupViewController = controller; self.setupViewController.title = @"Setup"; [self.navigationController pushViewController:self.setupViewController animated:YES]; [controller release]; } I can see the log statement in my console, but the view never changes. Am I missing something?

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  • Custom Font. Keeping the font width same.

    - by user338322
    I am trying to draw a string using quartz 2d. What i am doing is, i am drawing each letter of the string individually, because each letter has special attributes associated with it, by taking each letter into a new string. The string gets printed, but the space between the letters is not uniform. It looks very ugly to read . I read someting about using custom fonts. But i have no Idea, if I can do it!! my code is here. (void) drawRect : (CGRect)rect{ NSString *string=@"My Name Is Adam"; float j=0; const char *charStr=[string cStringUsingEncoding: NSASCIIStringEncoding]; for(int i=0;i { NSString *str=[NSString stringWithFormat:@"%c",charStr[i]]; const char *s=[str cStringUsingEncoding:NSASCIIStringEncoding]; NSLog(@"%s",s); CGContextRef context=[self getMeContextRef]; CGContextSetTextMatrix (context,CGAffineTransformMakeScale(1.0, -1.0)) ; CGContextSelectFont(context, "Arial", 24, kCGEncodingMacRoman); //CGContextSetCharacterSpacing (context, 10); CGContextSetRGBFillColor (context, 0,0,200, 1); CGContextSetTextDrawingMode(context,kCGTextFill); CGContextShowTextAtPoint(context, 80+j,80,s,1); j=j+15; } } In the output 'My Name is Adam' gets printed but the space between the letters is not uniform.!! is there any way to make the space uniform!!!

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  • Passing a column name instead of index in sqlite3

    - by user271753
    The problem code: NSString *query = @"SELECT Name FROM Category"; sqlite3_stmt *statement; if (sqlite3_prepare_v2(database, [query UTF8String], -1, &statement, nil) == SQLITE_OK) { while (sqlite3_step(statement) == SQLITE_ROW) { char *row =(char *)sqlite3_column_text(statement,0); char *rowData = (char *)sqlite3_column_text(statement,1); NSString *fieldName = [[NSString alloc] initWithUTF8String:row]; NSString *fieldValue = [[NSString alloc] initWithUTF8String:rowData]; NSLog(@"%@",fieldName); NSLog(@"%@",fieldValue); [fieldName release]; [fieldValue release]; } sqlite3_finalize(statement); } char *row =(char *)sqlite3_column_text(statement,0); In the above code instead of 0 can't I just pass a column name? How can I do that ?

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  • On the rootview controller i am not able to c the image

    - by madhavi
    I have made a navigation based application in my rootview controller i have put a text view when i run the app i am able to see that text view but when i navigate on other xib and comes back i am not able to see that text view if i do it programmatically by using view for header than i am able to c that text but why i am not able to do it in design time any idea

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  • Ensure User has entered string in correct format?

    - by Daniel Granger
    Hi, Whats the best way to ensure the user has entered a valid time string such as: 5:24 5.4 102:30 102.5 It will be entered into a UITextField therefore will be in a NSString. I want to allow the user to enter the time in either hours and minutes (hh:mm) or hours and decimal minutes (hh.m). In the hours minutes example they should be able to enter as many hours as the like but only between 0 - 59 minutes. With the hours decimal minutes I want them to only be able to enter again as many hours as the like but decimal minutes can only be 0 - 9. Many Thanks

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  • android drawable changes sizes on screen when reading image from file

    - by Daniel Benedykt
    Hi I have an image on a private file. I read the file, create the drawable, and assign it to an ImageView. The ImageView has WRAP_CONTENT so the size is automatic. On 320x480 screens, the image looks good But on screens with more resolution and high density 480x800 or 480x854 (N1, droid) , when the image is for example 150x150, I see the image as 100x100. Of course it has something to do with the density but not sure how should I resolve this. This is my code: FileInputStream fis = this.openFileInput("icon.png"); icon = Drawable.createFromStream(fis, "icon"); fis.close(); imageView.setImageDrawable(icon); thanks

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  • UIImagePickerController Crash after 5 to 7 pictures - again

    - by Sophtware
    OK, I know this one has been beaten to death on this forum, but I'm still having the memory problem and I have tried all the techniques on the web to get around this. I have an application that uses the UIImagePickerController to capture an image from the camera. I've tried both creating and destroying the controller for each picture, and keeping it around for the life of the app. Both are failing. The first way crashes the phone almost immediately. While the second, leaving the controller around, crashes the app after about 5 to 7 pictures. My original app used an undocumented API to get around this issue, but Apple rejected it because of this. I really need to get my app to the store. Does anyone have code showing how they got around the issue? I know there is a way because there are apps on the store using the camera, but I just can't seem to get it. Any help is greatly appreciated! I can post my code here too, if needed.

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  • iPhone app getting XML then refreshing it at intervals...

    - by user157733
    I have an app which gets some data from the web via an XML document. I have this working fine and have followed apples SeismicXML example (uses NSURLRequest etc). I am very new to this so I have to admit that I do not totally understand all the code that gets the XML - but it is working. My problem is that my app may be running for some time so I want to be able to refresh the XML every now and again and check to see if it is different. If it is different I need to update my contents. Basically this means my questions are.... Is there a standard way of doing this? I was thinking of creating a timer to call the function which parses the XML but I can't figure out which function to call. If anyone can give me any pointers or even better examples of this it would be fab. Thanks

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  • UIImageWriteToSavedPhotosAlbum working... sometimes.

    - by MegaEduX
    Hello, UIImageWriteToSavedPhotosAlbum is only working sometimes. Sometimes it works, sometimes it doesn't, exact same function. - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)image editingInfo:(NSDictionary *)editingInfo { NSLog(@"Saving image to camera roll..."); UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil); NSLog(@"Done!"); } I am using a UIImagePicker controller to get the image that then calls that function. Sometimes it saves it to the camera roll, other times it simply doesn't. Anyone has any idea? Thanks in advance.

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  • Xcode: How to change Image on Touching at an Image (same Position)?

    - by Markus S.
    Simply, I have placed an image with the Interface Builder in a UIView. Now I want to run a method/function when I am touching that image, for example when another image should be loaded. My Code: - (void)touchesended:(NSSet*) touches withEvent:(UIEvent *)event { // UITouch *touch = [touch anyObject]; bild_1_1.image = [UIImage imageNamed:@"t_1_4.jpg"]; //} }

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  • NSManagedObject How To Reload

    - by crissag
    I have a view that consists of a table of existing objects and an Add button, which allows the user to create a new object. When the user presses Add, the object is created in the list view controller, so that the object will be part of that managed object context (via the NSEntityDescription insertNewObjectForEntityForName: method). The Add view has a property for the managed object. In the list view controller, I create an Add view controller, set the property to the managed object I created, and then push the Add view on to the navigation stack. In the Add view, I have two buttons for save and cancel. In the save, I save the managed object and pass the managed object back to the list view controller via a delegate method. If the user cancels, then I delete the object and pass nil back to the list view controller. The complication I am having in the add view is related to a UIImagePickerController. In the Add view, I have a button which allows the user to take a photo of the object (or use an existing photo from the photo library). However, the process of transferring to the UIImagePickerController and having the user use the camera, is resulting in a didReceiveMemoryWarning in the add view controller. Further, the view was unloaded, which also caused my NSManagedObject to get clobbered. My question is, how to you go about reloading the NSManagedObject in the case where it was released because of the low memory situation?

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  • How to format date from string?

    - by 4thSpace
    I have a string with this value: 2010-05-13 23:17:29 I'd like to format it and am using the following code: NSDateFormatter *formatter = [[NSDateFormatter alloc] init]; formatter.dateStyle = NSDateFormatterMediumStyle; NSDate *formattedDate = [formatter dateFromString:dateString]; [formatter release]; When the debugger reaches the release line, formattedDate shows "invalid CFStringRef" and Cannot access memory at address 0x0 Any ideas what I'm doing wrong?

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  • Having a UITextField in a UITableViewCell

    - by Mathieu
    Hi! I'm trying to do that for a couple of days now, and after reading tons of messages of people trying to do that too, I'm still unable to have a fully working UITextField in some of my UITableViewCells, just like in this example: http://img231.imageshack.us/img231/4858/picture4za3.png Either I have the form working but the text is not visible (although I set its color to blue), the keyboard goes on the field when I click on it and I haven't been able to correctly implement the keyboard events. I tried with a bunch of examples from Apple (mainly UICatalog, where there is a kinda similar control) but it's still not working correctly. Can somebody help me (and all the people trying to realize this control) and post a simple implementation of a UITextField in a UITableViewCell, that works fine? Thank you very much.

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  • getting the bounds of a cell in groupedtable.

    - by praseed
    hi friends... how can i get the bounds of a row in a cell in a grouped table..My intention is to adjust the table view whenever the keyboard pops up. wat i have is a groupedtable with each cell having a textfield as subview of its contentview.. how can i get the bounds of the row in a cell, whenever user taps on a particular textfield. i need the bounds of the row so that i can adjust the view whenever keyboard pops up. Pls help me to find a solution. i am new to iphone development.

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  • How to access the database when developing on a phone?

    - by Pentium10
    I am having trouble accessing the database while I am developing on the phone. Whenever I execute cd /data/data/com.mycompck/databases then if I try to run ls I get opendir failed, Permission denied Or whenever I type in: sqlite3 I get sqlite3: permission denied What I am doing wrong? Are there some applications that can help me getting a human view of content resolvers values and/or SQLite databases?

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  • Draw arrow on line

    - by Pete
    Hi, I have this code: CGPoint arrowMiddle = CGPointMake((arrowOne.x + arrowTo.x)/2, (arrowOne.y + arrowTo.y)/2); CGPoint arrowLeft = CGPointMake(arrowMiddle.x-40, arrowMiddle.y); CGPoint arrowRight = CGPointMake(arrowMiddle.x, arrowMiddle.y + 40); [arrowPath addLineToScreenPoint:arrowLeft]; [arrowPath addLineToScreenPoint:arrowMiddle]; [arrowPath addLineToScreenPoint:arrowRight]; [[mapContents overlay] addSublayer:arrowPath]; [arrowPath release]; with this output: http://yfrog.com/edschermafbeelding2010032p What have i to add to get the left and right the at same degree of the line + 30°. If someone has the algorithm of drawing an arrow on a line, pleas give it. It doesn't matter what programming language it is... Thanks

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  • mutableCopyWithZone updating a property value.

    - by Jim
    I have a Class that I need to copy with the ability to make changes the value of a variable on both Classes. Simply put the classes need to remain clones of each other at all times. My understanding of the documentation is that I can do this using a shallow copy of the Class which has also been declared mutable. By shallow copying the pointer value for the variable will be cloned so that it is an exact match in both classes. So when I update the variable in the original the copy will be updated simultaneously. Is this right? As you can see below I have used mutableCopyWithZone in the class I want to copy. I have tried both NSCopyObject and allocWithZone methods to get this to work. Although I'm able to copy the class and it appears as intended, when updating the variable it is not changing value in the copied Class. - (id)mutableCopyWithZone:(NSZone *)zone { //ReviewViewer *copy = NSCopyObject(self, 0, zone); ReviewViewer *copy = [[[self class] allocWithZone:zone] init]; copy->infoTextViews = [infoTextViews copy]; return copy; } infoTextViews is a property declared as nonatomic, retain in the header file of the class being copied. I have also implemented the NSMutableCopying protocol accordingly. Any help would be great.

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  • Incompatible type in assignment

    - by coure06
    Getting error: Incompatible type in assignment at fValue = ..., see the code static float t = 0; float d = .5; static float fValue = 0; fValue = [self easeOutBounce:t andB:0 andC:30 andD:d]; here is the method -(float) easeOutBounce:(float)t andB:(float)b andC:(float)c andD:(float)d { if ((t/=d) < (1/2.75)) { return c*(7.5625*t*t) + b; } else if (t < (2/2.75)) { return c*(7.5625*(t-=(1.5/2.75))t + .75) + b; } else if (t < (2.5/2.75)) { return c(7.5625*(t-=(2.25/2.75))t + .9375) + b; } else { return c(7.5625*(t-=(2.625/2.75))*t + .984375) + b; } }

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  • How can I highlight an image on an iPhone?

    - by cometcomet
    I have a photo displayed on an iPhone. I would like to lower brightness of the photo at first, and when the user touches the photo, I would like to raise the brightness of the rectangular region near where the user touched, like this: www.cottagearts.net/tut_images/tut_cropping_pse_06.jpg Could anyone point me to a simple way of doing this?

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