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  • Scaled live iPhone Camera view in center, "CGAffineTransformTranslate" not working

    - by Gavin
    Hi, I have a little problem which I could not solve. I really hope someone can help me with that. I wanted to resize the live camera view and place it in the center, using the following code below: picker.cameraViewTransform = CGAffineTransformScale(picker.cameraViewTransform, 0.5, 0.56206); picker.cameraViewTransform = CGAffineTransformTranslate(picker.cameraViewTransform, 80, 120); But all I got was a scaled 1/2 sized view on the top left of the screen. It seems as though "CGAffineTransformTranslate" does nothing at all. The translation didn't work even when I used: picker.cameraViewTransform = CGAffineTransformMake(1, 0, 0, 1, 80, 120); The translation portion seems to have no effect on the live camera view. Hope someone can enlighten me. Thanks.

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  • Protecting Data Feed for iPhone App

    - by Chris
    I am creating an App that pulls data from a file on my server. That file gets data from my database, based on GET values that are passed through the URL. I would like to keep this feed closed - that is, I don't want people finding the datasource and reading the data on their own. I considered sending an alphanumeric id along with the url string, but if they can find the URL that I am calling, then there won't be anything preventing them from grabbing that alphanumeric id also. I am looking for any ideas or experiences that might help me here. Thanks.

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  • MGTwitterEngine - Using getImageAtURL on iPhone

    - by Andrew Malchow
    Essentially, I'm working on asynchronously downloading images and adding them to specific UITableView cells (twitter profile images using MGTwitterEngine from Matt Gemmell). I've looked at general asynchronous download code and must admit, I'm still too much of a noob to understand it well enough to adapt it to my purposes. Instead, I'm attempting to use Gemmell's included getImageAtUrl method to add the images. I have it working to the point that -imageReceived: receives the images for visible cells, however, I'm stuck as to how to include them into the appropriate cells at that point. - (void)imageReceived:(UIImage *)image forRequest:(NSString *)identifier { NSLog(@"Got an image:%@",image); // What goes here? Or elsewhere? } This method is within my main view controller, I also have a custom cell controller where I'm drawing the cell content using Loren Brichter's fast scrolling code. Any help with this MGTwitterEngine method in particular, or with dynamically adding these images to my table cells would be greatly appreciated.

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  • iPhone UIButton Tap

    - by Ivan
    Hello all, I am trying to make a button that response to single and double tap. I am trying to do this using myAction method. The problem is that first time when I press the button the method myAction isn't called. Can somebody tell why this happening and how can I fix that? -(IBAction)myButton:(id)sender{ UIButton *theButton = (UIButton *)sender; [theButton addTarget:self action:@selector(myAction:forEvent:) forControlEvents:UIControlEventAllEvents]; } - (void)myAction:(id)sender forEvent:(UIEvent *)event { NSLog(@"Touch events goes here"); } Thank you, I. Vasilev

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  • iPhone - Using javascritp to increase font of web view

    - by satyam
    i've a webview in my app. It has + and - buttons to increase and decrease the font. When I start the view, the text occupies whole 320 pixels width. I'm following the way mentioned in "http://stackoverflow.com/questions/589177/how-to-increase-font-size-in-uiwebview" I'm seeing the increase and decrease of font. But once the font size increases, text is not occupying full view. It won't occupy whole 320 pixels width. As and when text size increases, the width of final text in web view decreases slowly. Why? How to avoid it?

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  • Memory leak problem. iPhone SDK

    - by user326375
    Hello, i've got a problem, i cannot solve it, just recieving error: Program received signal: “0”. The Debugger has exited due to signal 10 (SIGBUS).The Debugger has exited due to signal 10 (SIGBUS). Here is some method, if i comment it out, problem goes aways - (void)loadTexture { const int num_tex = 10; glGenTextures(num_tex, &textures[0]); //TEXTURE #1 textureImage[0] = [UIImage imageNamed:@"wonder.jpg"].CGImage; //TEXTURE #2 textureImage[1] = [UIImage imageNamed:@"wonder.jpg"].CGImage; //TEXTURE #3 textureImage[2] = [UIImage imageNamed:@"wall_eyes.jpg"].CGImage; //TEXTURE #4 textureImage[3] = [UIImage imageNamed:@"wall.jpg"].CGImage; //TEXTURE #5 textureImage[4] = [UIImage imageNamed:@"books.jpg"].CGImage; //TEXTURE #6 textureImage[5] = [UIImage imageNamed:@"bush.jpg"].CGImage; //TEXTURE #7 textureImage[6] = [UIImage imageNamed:@"mushroom.jpg"].CGImage; //TEXTURE #8 textureImage[7] = [UIImage imageNamed:@"roots.jpg"].CGImage; //TEXTURE #9 textureImage[8] = [UIImage imageNamed:@"roots.jpg"].CGImage; //TEXTURE #10 textureImage[9] = [UIImage imageNamed:@"clean.jpg"].CGImage; for(int i=0; i<num_tex; i++) { NSInteger texWidth = CGImageGetWidth(textureImage[i]); NSInteger texHeight = CGImageGetHeight(textureImage[i]); GLubyte *textureData = (GLubyte *)malloc(texWidth * texHeight * 4); CGContextRef textureContext = CGBitmapContextCreate(textureData, texWidth, texHeight, 8, texWidth * 4, CGImageGetColorSpace(textureImage[i]), kCGImageAlphaPremultipliedLast); CGContextDrawImage(textureContext, CGRectMake(0.0, 0.0, (float)texWidth, (float)texHeight), textureImage[i]); CGContextRelease(textureContext); glBindTexture(GL_TEXTURE_2D, textures[i]); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, texWidth, texHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, textureData); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); free(textureData); } } anyone can help me with releasing/deleting objects in this method? Thanks.

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  • iphone EXC_BAD_ACCESS

    - by Dave
    I seem to get an EXC_BAD_ACCESS error when I select a cell in my table view that takes me to a 2nd table view with a lot of these http://pastie.org/906711 could they be the problem if I have 8 of them ? Heres the backtrace : http://pastie.org/906729 Thanks for your time,

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  • Custom UIButton for Iphone.

    - by Amal
    I have an view in my App which has a number of buttons based on the number of items returned by the server. So if the server returns say 10 items, there should be 10 buttons and clicking on each button should call a different person. For the above purpose I created a custom button class deriving from UIButton. @implementation HopitalButton @synthesize index; @synthesize button_type; - (id)initWithFrame:(CGRect)frame { if (self = [super initWithFrame:frame]) { UIImage* img = [UIImage imageNamed:@"dr_btn.png"]; [img stretchableImageWithLeftCapWidth:10 topCapHeight:10]; [self setBackgroundImage:img forState:UIControlStateNormal]; [self setTitleColor:[UIColor colorWithRed:0.698 green:0.118 blue:0.376 alpha:1] forState:UIControlStateNormal] ; [self setFont:[UIFont fontWithName:@"Helvetica Bold" size:13]]; self.titleLabel.textColor = [UIColor colorWithRed:178 green:48 blue:95 alpha:1]; self.adjustsImageWhenHighlighted = YES; } return self; } - (void)dealloc { [super dealloc]; } @end Now the problem with the above code is that it does not create buttons that look similar to the buttons created by default in Interface builder. The borders are missing. And I create buttons of the above type by the following code: HopitalButton* hb = [[HopitalButton alloc] init]; hb.button_type = @"call"; hb.frame = CGRectMake(50, 50 + i * 67, 220, 40); [self.scroll_view addSubview:hb]; [hb setTitle:[[[self.office_full_list objectAtIndex:i] objectForKey:@"Staff" ]objectForKey:@"FullName"] forState:UIControlStateNormal]; hb.index = [NSNumber numberWithInt:[self.button_items count]]; [self.button_items insertObject:hb atIndex:[self.button_items count]]; [hb addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside]; I am not finding a way to set the button type for this custom button. Is there a way i can do it ? Or is there a better way to design the code.

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  • iPhone SDK: loading UITableView from SQLite

    - by leon
    Hi, I think I got a good handle on UITableViews and on getting/inserting data from/to SQLite db. I am straggling with an architectural question. My application saves 3 values int the database, there can be many/many rows. However would I load them in the table? From all the tutorials I have seen, at one point entire database is loaded in the NSMutableArray or similar object via performing SELECT statement. Then when -(UITableViewCell *) tableView: (UITableView *) tableView cellForRowAtIndexPath: (NSIndexPath *) indexPath called, rows required are dolled out from the previous loaded NSMutableArray (or similar stracture). But what i have have thousands for rows? Why would I pre-load them? Should I just query database each time cellForRowAtIndexPath is called? If so, what would I use as an index? Each row in the table will have an AUTOINCREMENT index, but since some rows may be deleted index will not correspond to rows in the table (in the SQL I may have something like this with row with index 3 missing): 1 Data1 Data1 2 Data2 Data2 4. data3 data3 Thanks

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  • xcode/iphone Code templates

    - by vilo
    Is there some tool in xcode that allows me to store snippets of code I often reuse in various applications so I do not have to retype it each time? I am talking about things like all the code that goes into defining Table Delegate Methods and Table Source Methods, UIAlertViews code and such. I just would like to have my own private repository where I can put snippets of code I think I may need in the future in other apps. Is there anything like that? Thanks for any help.

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  • IPhone OS 4.0 - Beta 3 - setContentURL on MPMoviePlayerViewController crashing the App

    - by Thom
    Hi Everyone. I had this issue, with the beta2 and I thought the beta3 was going to solve it, but I'm starting to think that I'm doing something wrong. I have a MPMoviePlayerViewController playing a video and when the video ends I'm trying to change the video for another like this: [moviePlayerViewController.moviePlayer setContentURL:newVideoURL]; The app crashes when it reaches this point. Any help/advice welcome :) Thanks Thomas

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  • Change iPhone UISlider bar image.

    - by Fogmeister
    Hi everyone! My first question on stackoverflow! I'm using a UISlider in my app but I'd like to use a custom "look-and-feel" for it. I have changed the thumb to my own image but is there a way to change the bar also? I have a bar image I would like to use but can't see how to do this. I have found how to change the max and min image but not the bar itself. Thanks Oliver

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  • Tracking iPhone on Yahoo Web Analytics using ASIHTTPRequest

    - by Mads Mobæk
    I'm trying to track an event in my app using Yahoo Web Analytics. The code I am using looks like ASIHTTPRequest *yahooTrack = [ASIHTTPRequest requestWithURL: [NSURL URLWithString:@"http://s.analytics.yahoo.com/p.pl?a=xxxxxxxxxxxxx&js=no&b=yyyyyyyyyyyy&cf6=zzzzzzzzzzz"]]; yahooTrack.didFinishSelector = @selector(statisticsFinished:); yahooTrack.delegate = self; [yahooTrack startAsynchronous]; Then the statisticsFinished looks like: NSLog(@"Cookies: %@", request.requestCookies); NSLog(@"Redircount: %d", [request redirectCount]); NSLog(@"Responsecode %d %@\nMsg: %@", request.responseStatusCode, request.responseStatusMessage, [request responseString]); And all the information I get back looks correct. Cookies are set, redirectcount is 1 the first time (as it redirects to s.analytics.yahoo.com/itr.pl?.... a normal browser does). Then the redirectcount is 0 for subsequent request until the app is restarted and session cleared. The responseString returns GIF89a. Even if the data looks correct, Yahoo still won't track. As soon as I call the tracking url directly in my browser it works as expected. I realize Flurry is a better option, but I'm forced to use Yahoo in this case. Also, using a UIWebView probably would work, but I'm against putting in a webview just for tracking purposes. Is there any difference in how ASIHTTPRequest and Safari would handle a call to a simple URL as this? Or do you see anything else that could explain why the tracking isn't working?

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  • Swiping Images with Page Control in Iphone

    - by lakesh
    I am trying to make practice app where i can scroll images with page control. I am able to scroll images and able to include the page control. But the problem i face is i am not able to interlink the two. Meaning to say when I scroll the images, the page control is not affected and when i change the page control, the scrolling of the images is unaffected. I have referred to this: http://www.iosdevnotes.com/2011/03/uiscrollview-paging/ for the scrolling with page control. Viewcontroller.h #import <UIKit/UIKit.h> @interface ViewController : UIViewController <UIScrollViewDelegate>{ UIScrollView *scrollView; UIPageControl *pageControl; BOOL pageControlBeingUsed; } @property (nonatomic, retain) IBOutlet UIScrollView *scrollView; @property (nonatomic, retain) IBOutlet UIPageControl *pageControl; - (IBAction)changePage; @end Viewcontroller.m #import "ViewController.h" @interface ViewController () @end @implementation ViewController @synthesize scrollView,pageControl; - (void)viewDidLoad { [super viewDidLoad]; NSArray *images = [[NSArray alloc] initWithObjects:[UIImage imageNamed:@"1.jpeg"],[UIImage imageNamed:@"2.jpeg"],[UIImage imageNamed:@"3.jpeg" ], nil]; self.scrollView.contentSize = CGSizeMake(self.scrollView.frame.size.width * images.count, self.scrollView.frame.size.height); for (int i = 0; i < images.count; i++) { CGRect frame; frame.origin.x = self.scrollView.frame.size.width * i; frame.origin.y = 0; frame.size = self.scrollView.frame.size; UIImageView* imgView = [[UIImageView alloc] init]; imgView.image = [images objectAtIndex:i]; imgView.frame = frame; [scrollView addSubview:imgView]; } } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } - (void)viewDidUnload { // Release any retained subviews of the main view. // e.g. self.myOutlet = nil; self.scrollView = nil; } - (void)scrollViewDidScroll:(UIScrollView *)sender { // Update the page when more than 50% of the previous/next page is visible CGFloat pageWidth = self.scrollView.frame.size.width; int page = floor((self.scrollView.contentOffset.x - pageWidth / 2) / pageWidth) + 1; self.pageControl.currentPage = page; } - (IBAction)changePage{ // update the scroll view to the appropriate page CGRect frame; frame.origin.x = self.scrollView.frame.size.width * self.pageControl.currentPage; frame.origin.y = 0; frame.size = self.scrollView.frame.size; [self.scrollView scrollRectToVisible:frame animated:YES]; pageControlBeingUsed = YES; } - (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView { pageControlBeingUsed = NO; } - (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView { pageControlBeingUsed = NO; } @end Need some guidance on this... Thanks..

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  • iPhone SDK - Comparing characters in string

    - by Karl Daniel
    Basically what I'm trying to do is compare 2 strings one from a plist and one from the user's input. I use a while loop to step through each character and compare it and if true then I increase an integer then once the loop has finished I work out the percentage correct / similarity of the plist answer and the user's answer. I seem to be having a problem however as the only return I'm getting is 0. Below is the code I'm using... The code below is all functioning and the question no longer requires answering... Working code... answerLength = boxAnswer.length; //Gets number of characters of first string. plistLength = plistAnswer.length; //Gets number of characters of second string. characterRange = 0; //Sets the variable for which character to look at. charactersCorrect = 0; //Sets the variable of number of matching characters. unichar answerCharacter; //Declares a unichar for the first string. unichar plistCharacter; //Declares a unichar for the second string. while (answerLength > 0 && plistLength > 0) { answerCharacter = [boxAnswer characterAtIndex:characterRange]; //Gets character of first string at the index of the range integer. plistCharacter = [plistAnswer characterAtIndex:characterRange]; //Gets character of second string at the index of the range integer. answerLength--; //Reduces number of characters left to compare. plistLength--; characterRange++; //Increases integer to tell it to look at next character in string. if (answerCharacter == plistCharacter) { //Checks to see if character of first string and character of second string match. charactersCorrect++; //If true increases the number correct. } } //Works out percentage of matching characters out of the total string. totalChar = plistAnswer.length; totalPercentage = (charactersCorrect/totalChar)*100; percentageCorrect.text = [NSString stringWithFormat:@"%i%%",totalPercentage]; Variable Declarations... int answerLength; int plistLength; int characterRange; double totalChar; double charactersCorrect; int totalPercentage;

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  • iphone sdk: finding the direction of scrolling in UIScrollView

    - by Alex1987
    I have a UIScrollView with only horizontal scrolling allowed, and I would like to know which direction (left, right) the user scrolls. What I did was to subclass the UIScrollView and override the touchesMoved method: - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { [super touchesMoved:touches withEvent:event]; UITouch *touch = [touches anyObject]; float now = [touch locationInView:self].x; float before = [touch previousLocationInView:self].x; NSLog(@"%f %f", before, now); if (now > before){ right = NO; NSLog(@"LEFT"); } else{ right = YES; NSLog(@"RIGHT"); } } But this method sometimes doesn't get called at all when I move. What do you think?

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  • iPhone: Sharing protocol/delegate code

    - by pion
    I have the following code protocol snippets: @protocol FooDelegate; @interface Foo : UIViewController { id delegate; } ... @protocol FooDelegate ... // method 1 ... // method 2 ... @end Also, the following code which implements FooDelegate: @interface Bar1 : UIViewController { ... } @interface Bar2 : UITableViewController { ... } It turns out the implementation of FooDelegate is the same on both Bar1 and Bar2 classes. I currently just copy FooDelegate implementation code from Bar1 to Bar2. How do I structure/implement in such a way that Bar1 and Bar2 share the same code in a single code base (not as currently with 2 copies) since they are the same? Thanks in advance for your help.

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  • iPhone: Grouped Table Confusion

    - by senfo
    I'm trying to follow along with this UITableView tutorial and I'm afraid I'm getting confused. What I hope to accomplish is to create a grouped table, which resembles the look and feel of the following image (image source): For each "break" in the table, I assume that I need another section. I understand there is a global NSMutableArray, which acts as the data source to the UITableView. Inside this global array, there are dictionaries for sections and for data, but this is where I start getting confused. Should I create a unique table to store each section in addition to a new table for the rows that are part of that section? In other words, if I have five sections, will I end up with ten unique collections of data (one for each section and one to store the rows related to the section), which all eventually get stored in the global array?

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  • custom Copy Responder in iphone

    - by sagar
    Hello ! I have a webview in my application. I want to handle when user copies something from web view, my custom method - should be triggered. I have tried following. I have placed following method in myViewCtr.m file -(void)copy:(id)sender{ NSLog(@"hi ! Hello "); } But nothing working - What should I do to implement the same ? Thanks in advance for sharing your great knowledge. Sagar

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  • Compiling GData for iPhone

    - by spin-docta
    Hi, I'm trying to compile a project that uses the GData objective-c framework. I've successfully compiled and run the project under the 'Debug' configuration, but when I try to compile using 'Release' and now 'Adhoc' I get the following errors. NOTE: I duplicated the debug configuration for adhoc and that doesn't seem to help. "_kGDataGoogleAnalyticsDefaultAccountFeed", referenced from: _kGDataGoogleAnalyticsDefaultAccountFeed$non_lazy_ptr in TKGoogleAnayliticsAPI.o ".objc_class_name_GDataFeedAnalyticsAccount", referenced from: literal-pointer@_OBJC@_cls_refs@GDataFeedAnalyticsAccount in TKGoogleAnayliticsAPI.o ".objc_class_name_GDataFeedAnalyticsData", referenced from: literal-pointer@_OBJC@_cls_refs@GDataFeedAnalyticsData in TKGoogleAnayliticsAPI.o ".objc_class_name_GDataQueryAnalytics", referenced from: literal-pointer@_OBJC@_cls_refs@GDataQueryAnalytics in TKGoogleAnayliticsAPI.o ".objc_class_name_GDataServiceGoogleAnalytics", referenced from: literal-pointer@_OBJC@_cls_refs@GDataServiceGoogleAnalytics in TKGoogleAnayliticsAPI.o ld: symbol(s) not found collect2: ld returned 1 exit status

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  • iPhone Development - Query related records using CoreData

    - by Mustafa
    I have a case where i have three entities with one-to-many and one-to-many relationships: Entity A (Entity B relationhip), Entity B (Entity A relationship, Entity C relationship), Entity C (Entity B relationhip) I have the reference of Entity A, and now i want to fetch all the related Entity C records. How can i do that? (with least amount of code) Edit: Here's another way to put it. Can we perform joins with CoreData. For example, (and this is a very crude example), We have a following entity-relationship: Grand Parent (1)---(m) Parent Parent (1)---(m) Child So, now if i have "Albert" the Grand Parent, and i want to get all his grand children, how can i do that?

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