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  • iPhone SDK math - pythagorean theorem problem!

    - by Flafla2
    Just as a practice, I am working on an app that solves the famous middle school pythagorean theorem, a squared + b squared = c squared. Unfortunately, the out-coming answer has, in my eyes, nothing to do with the actual answer. Here is the code used during the "solve" action. - (IBAction)solve { int legoneint; int legtwoint; int hypotenuseint; int lonesq = legoneint * legoneint; int ltwosq = legtwoint * legtwoint; int hyposq = hypotenuseint * hypotenuseint; hyposq = lonesq + ltwosq; if ([legone.text isEqual:@""]) { legtwoint = [legtwo.text intValue]; hypotenuseint = [hypotenuse.text intValue]; answer.text = [NSString stringWithFormat:@"%d", legoneint]; self.view.backgroundColor = [UIColor blackColor]; } if ([legtwo.text isEqual:@""]) { legoneint = [legone.text intValue]; hypotenuseint = [hypotenuse.text intValue]; answer.text = [NSString stringWithFormat:@"%d", legtwoint]; self.view.backgroundColor = [UIColor blackColor]; } if ([hypotenuse.text isEqual:@""]) { legoneint = [legone.text intValue]; legtwoint = [legtwo.text intValue]; answer.text = [NSString stringWithFormat:@"%d", hypotenuseint]; self.view.backgroundColor = [UIColor blackColor]; } } By the way, legone, legtwo, and hypotenuse all represent the UITextField that corresponds to each mathematical part of the right triangle. Answer is the UILabel that tells, you guessed it, the answer. Does anyone see any flaws in the program? Thanks in advance!

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  • iPhone SDK: App crashing when trying to scroll through table

    - by iPhone Developer
    I have a view controller with a table on it. When the app starts, it loads the first 5 visble cells. That works as expected. My problem is that, when I try to scroll down the app crashes with this error. Any help appreciated. 2010-06-06 12:25:42.547 iphoneos[18238:207] * -[NSCFString tableView:cellForRowAtIndexPath:]: unrecognized selector sent to instance 0x451a980 2010-06-06 12:25:42.549 iphoneos[18238:207] Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '** -[NSCFString tableView:cellForRowAtIndexPath:]: unrecognized selector sent to instance 0x451a980' Here is my code to load cells. UITableViewCell * cell = nil; NSInteger index = [indexPath indexAtPosition:1]; NSLog(@"WHAT IS INDEX %i", indexPath); RoundedGradientTableViewCell *retailerCell = (RoundedGradientTableViewCell *)[tb dequeueReusableCellWithIdentifier:@"RET"]; if(!retailerCell){ retailerCell = [[[RoundedGradientTableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:@"RET"] autorelease]; } [retailerCell setArcSize:5.0]; [retailerCell setStrokeSize:1.0]; [retailerCell setStrokeColor:[UIColor clearColor]]; [retailerCell setBackgroundFillColor:[UIColor clearColor]]; [retailerCell setBackgroundColor:[UIColor clearColor]]; Retailer *retailer = [self retailerAtIndex:index]; if(retailer){ [[retailerCell textLabel] setText:[retailer name]]; if([retailer hasImage]){ [[retailerCell contentImageView] setImage:[retailer image]]; } } else { [[retailerCell textLabel] setText:@"No title"]; } cell = retailerCell; [cell setSelectionStyle:UITableViewCellSelectionStyleNone]; NSLog(@"retailer: %@ ", [retailer name]); NSLog(@"log: %i ", index); return cell;

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  • iPhone SDK: Switching to one view then back to previous view errors

    - by Nic Hubbard
    I have a UITabBarConroller that I use to switch between 3 different views. This all works perfectly. On one of my tabs, I added a button at the to called "Add", I have added an outlet to this, as well as an IBAction method which looks like the following: // Method used to load up view where we can add a new ride - (IBAction)showAddNewRideView { MyRidesViewController *controller = [[MyRidesViewController alloc] initWithNibName:@"AddNewRide" bundle:nil]; controller.modalTransitionStyle = UIModalTransitionStyleCoverVertical; [self presentModalViewController:controller animated:YES]; [controller release]; }//end showAddNewRideView This currently works fine, and loads up my AddNewRide nib file. But, once that view loads, I have a cancel button, which, when clicked, I want to return to the previous view. So, I figured I would just do the reverse of the above, using the following method which would load back my previous nib: - (IBAction)cancelAddingNewRide { MyRidesViewController *controller = [[MyRidesViewController alloc] initWithNibName:@"MainWindow" bundle:nil]; controller.modalTransitionStyle = UIModalTransitionStyleCoverVertical; [self presentModalViewController:controller animated:YES]; [controller release]; }//end cancelAddingNewRide But, which trying to load the MainWindow nib, the program crashes, and I get the following error: 2010-05-05 20:24:37.211 Ride[6032:207] *** -[MyRidesViewController cancelAddingNewRide]: unrecognized selector sent to instance 0x501e450 2010-05-05 20:24:37.213 Ride[6032:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[MyRidesViewController cancelAddingNewRide]: unrecognized selector sent to instance 0x501e450' So, I am a little lost as to why it would work one way, but not the other.

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  • MediaFileUpload of HTML in UTF-8 encoding using Python and Google-Drive-SDK

    - by Victoria
    Looking for example using MediaFileUpload has a reference to the basic documentation for creating/uploading a file to Google Drive. However, while I have code that creates files, converting from HTML to Google Doc format. It works perfectly when they contain only ASCII characters, but when I add a non-ASCII character, it fails, with the following traceback: Traceback (most recent call last): File "d:\my\py\ckwort.py", line 949, in <module> rids, worker_documents = analyze( meta, gd ) File "d:\my\py\ckwort.py", line 812, in analyze gd.mkdir( **iy ) File "d:\my\py\ckwort.py", line 205, in mkdir self.create( **( kw['subop'])) File "d:\my\py\ckwort.py", line 282, in create media_body=kw['media_body'], File "D:\my\py\gdrive2\oauth2client\util.py", line 120, in positional_wrapper return wrapped(*args, **kwargs) File "D:\my\py\gdrive2\apiclient\http.py", line 676, in execute headers=self.headers) File "D:\my\py\gdrive2\oauth2client\util.py", line 120, in positional_wrapper return wrapped(*args, **kwargs) File "D:\my\py\gdrive2\oauth2client\client.py", line 420, in new_request redirections, connection_type) File "D:\my\py\gdrive2\httplib2\__init__.py", line 1597, in request (response, content) = self._request(conn, authority, uri, request_uri, method, body, headers, redirections, cachekey) File "D:\my\py\gdrive2\httplib2\__init__.py", line 1345, in _request (response, content) = self._conn_request(conn, request_uri, method, body, headers) File "D:\my\py\gdrive2\httplib2\__init__.py", line 1282, in _conn_request conn.request(method, request_uri, body, headers) File "C:\Python27\lib\httplib.py", line 958, in request self._send_request(method, url, body, headers) File "C:\Python27\lib\httplib.py", line 992, in _send_request self.endheaders(body) File "C:\Python27\lib\httplib.py", line 954, in endheaders self._send_output(message_body) File "C:\Python27\lib\httplib.py", line 812, in _send_output msg += message_body UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 370: ordinal not in range(128) I don't find any parameter to use to specify what file encoding should be used by MediaFileUpload (My files are using UTF-8). Am I missing something?

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  • Problem with reading data from plist iphone sdk

    - by neha
    Hi all, I'm creating a myDb.plist file in my resources folder and trying to read it, but it's not getting read. I'm using the following code. NSString* plistPath = [[NSBundle mainBundle] pathForResource:@"myDb" ofType:@"plist"]; contentArray = [NSArray arrayWithContentsOfFile:plistPath]; contentArray is showing null. Can anybody please help me? Thanx in advance.

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  • iPhone SDK: Why is didSelectRowAtIndexPath not being fired?

    - by iPhone Developer
    I have a view with a table on it. When the app starts, it loads the first 5 visble cells. That works as expected. My problem is that, when I try to scroll down in the table the app crashes with this error. What I've found is that didSelectRowAtIndexPath is not being called. AFAIK, all I need to do is to subscribe to the delegate. But I must be missing something? @interface LandingRetailersViewController : TableSectionHeaderViewController<UITableViewDataSource, UITableViewDelegate, UITabBarDelegate> { Any help appreciated. 2010-06-06 12:25:42.547 iphoneos[18238:207] * -[NSCFString tableView:cellForRowAtIndexPath:]: unrecognized selector sent to instance 0x451a980 2010-06-06 12:25:42.549 iphoneos[18238:207] Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '** -[NSCFString tableView:cellForRowAtIndexPath:]: unrecognized selector sent to instance 0x451a980' Here is my code to load cells. UITableViewCell * cell = nil; NSInteger index = [indexPath indexAtPosition:1]; NSLog(@"WHAT IS INDEX %i", indexPath); RoundedGradientTableViewCell *retailerCell = (RoundedGradientTableViewCell *)[tb dequeueReusableCellWithIdentifier:@"RET"]; if(!retailerCell){ retailerCell = [[[RoundedGradientTableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:@"RET"] autorelease]; } [retailerCell setArcSize:5.0]; [retailerCell setStrokeSize:1.0]; [retailerCell setStrokeColor:[UIColor clearColor]]; [retailerCell setBackgroundFillColor:[UIColor clearColor]]; [retailerCell setBackgroundColor:[UIColor clearColor]]; Retailer *retailer = [self retailerAtIndex:index]; if(retailer){ [[retailerCell textLabel] setText:[retailer name]]; if([retailer hasImage]){ [[retailerCell contentImageView] setImage:[retailer image]]; } } else { [[retailerCell textLabel] setText:@"No title"]; } cell = retailerCell; [cell setSelectionStyle:UITableViewCellSelectionStyleNone]; NSLog(@"retailer: %@ ", [retailer name]); NSLog(@"log: %i ", index); return cell;

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  • facebook messages result set like part 2

    - by David
    Hey guys, I don't think I'm getting it right. Here is my most recent query that I believe is almost working. SELECT max(sender_id) as sender_id, subject, MAX(id) as message_id, MAX(created_at) as updated_at FROM messages where (recipient_id = #{current_user} and recipient_deleted = 'f') or sender_id = #{current_user} GROUP BY subject ORDER BY max(created_at) DESC ; Basically the goal is to fetch all recent messages of a user, group them by subject, and make sure that the photo that is showing up is the other party's photo, never the current user. (also need the most recent message body and message count but that is for another time) Here is what I think is wrong. doing max(sender_id) is wrong, since the current_user id could be higher than the sender's id. I am using the sender_id in the html page to fetch the user's photo.

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  • Read Text File in Document Folder - Iphone SDK

    - by Kevin
    Hello everyone I have this code below: NSString *fileName = [[NSUserDefaults standardUserDefaults] objectForKey:@"recentDownload"]; NSString *fullPath = [NSBundle pathForResource:fileName ofType:@"txt" inDirectory:[NSHomeDirectory() stringByAppendingString:@"/Documents/"]]; NSError *error = nil; [textViewerDownload setText:[NSString stringWithContentsOfFile:fullPath encoding: NSUTF8StringEncoding error:&error]]; textviewerdownload is the textview displaying the text from the file. The actual file name is stored in an NSUserDefault called recentDownload. When I build this, I click the button which this is under, and my application crashes. Is there anything wrong with the syntax or just simple error?

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  • Fetch a label from tableView cell iphone sdk

    - by neha
    Hi all, In my application I'm adding a label to tableView cells using "cell addsubview" and not "cell.contentview addsubview". I'm assigning a tag to that label, but I'm not able to fetch it using "cell.contentView viewWithTag:1". I perfectly understand that the label is not on contentView, but then how do I fetch it? Thanks in advance.

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  • Difference between Facebook query from iphone and from web

    - by Aashutosh
    Hi, I am creating a iphone application for the existing web application. The fql which is happening at the web is giving me right results but the fql happening at the iphone is not giving all the results. select name, pic_square, pic_big, uid, sex, birthday, relationship_status , current_location, meeting_sex, interests, music, tv, movies, books, quotes, education_history, work_history from user where uid = XXXXXXX is giving me different result in web when compared to the iphone. Thanks, Aashutosh

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  • Question on ExtAudioFileRead and AudioBuffer for iPhone SDK

    - by backspacer
    I'm developing an iPhone app that uses the Extended Audio File Services. I try to use ExtAudioFileRead to read the audio file, and store the data in an AudioBufferList structure. AudioBufferList is defined as: struct AudioBufferList { UInt32 mNumberBuffers; AudioBuffer mBuffers[1]; }; typedef struct AudioBufferList AudioBufferList; and AudioBuffer is defined as struct AudioBuffer { UInt32 mNumberChannels; UInt32 mDataByteSize; void* mData; }; typedef struct AudioBuffer AudioBuffer; I want to manipulate the mData but I wonder what does the void* mean. Why is it void*? How can I decide what data type is actually stored in mData?

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  • Selecting random numbers iphone sdk

    - by harekam_taj
    Hey, I want to select 10 random numbers from 1 to 35. I am trying to do the following, but I get some repeated numbers int totalNumberCnt = 1; while (totalNumberCnt < 11) { int randomNumber1 = 1 + arc4random() % 35; NSString *numberString = [NSString stringWithFormat: @"%d",randomNumber1]; NSLog(numberString); [firstNumber addObject:numberString]; [secondNumber addObject:numberString]; totalNumberCnt++; } Thank you for your help.

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  • NSInvocation object not getting allocated iphone sdk

    - by neha
    Hi all, I'm doing NSString *_type_ = @"report"; NSNumber *_id_ = [NSNumber numberWithInt:report.reportId]; NSDictionary *paramObj = [NSDictionary dictionaryWithObjectsAndKeys: _id_, @"bla1", _type_, @"bla2",nil]; _operation = [[NSInvocationOperation alloc] initWithTarget:self selector:@selector(initParsersetId:) object:paramObj]; But my _operation object is nil even after processing this line. The selector here is actually a function I'm writing which is like: -(void)initParsersetId:(NSInteger)_id_ type:(NSString *)_type_ { NSString *urlStr = [NSString stringWithFormat:@"apimediadetails?id=624&type=report"]; NSString *finalURLstr = [urlStr stringByAppendingString:URL]; NSURL *url = [[NSURL alloc] initWithString:finalURLstr]; NSXMLParser *xmlParser = [[NSXMLParser alloc] initWithContentsOfURL:url]; //Initialize the delegate. DetailedViewObject *parser = [[DetailedViewObject alloc] initDetailedViewObject]; //Set delegate [xmlParser setDelegate:parser]; //Start parsing the XML file. BOOL success = [xmlParser parse]; if(success) NSLog(@"No Errors"); else NSLog(@"Error Error Error!!!"); } Can anybody please point out wheather where I'm going wrong. Thanx in advance.

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  • iPhone SDK Zoom like UITextField

    - by Craig
    I have noticed in a number of apps they let you see a zoomed in view of where you are dragging just like the way it is on a UITextField (screenshot attached) but it works over images etc.. Does anyone know if there is an easy way to achieve this? Since a number of apps use it I figured that there might be something built in or an easy way to do it. Any tips are appreciated.

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