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  • How can I delete video stored in the photo library ?

    - by srikanth rongali
    I have saved video in to the photo library. -(void)exportVideo:(id)sender { NSString *path = [DOCUMENTS_FOLDER stringByAppendingString:@"/air.mp4"]; NSLog(@"Path:%@", path); NSLog(@"Export Button CLicked"); UISaveVideoAtPathToSavedPhotosAlbum(path, self, @selector(video:didFinishSavingWithError: contextInfo:), nil); } - (void)video:(NSString *)videoPath didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo { NSLog(@"Finished saving video with error: %@", error); } Now I need to delete the video i have stored programmatically. How can I delete the video ? Are there any functions for it? Thank You.

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  • How to update a string property of an sqlite database item

    - by Thomas Joos
    hi all, I'm trying to write an application that checks if there is an active internet connection. If so it reads an xml and checks every 'lastupdated' item ( php generated string ). It compares it to the database items and if there is a new value, this particular item needs to be updated. My code seems to work ( compiles, no error messages, no failures, .. ) but I notice that the particular property does not change, it becomese (null). When I output the binded string value it returns the correct string value I want to update into the db.. Any idea what I'm doing wrong? const char *sql = "update myTable Set last_updated=? Where node_id =?"; sqlite3_stmt *statement; // Preparing a statement compiles the SQL query into a byte-code program in the SQLite library. // The third parameter is either the length of the SQL string or -1 to read up to the first null terminator. if (sqlite3_prepare_v2(database, sql, -1, &statement, NULL) == SQLITE_OK){ NSLog(@"last updated item: %@", [d lastupdated]); sqlite3_bind_text(statement, 1, [d lastupdated],-1,SQLITE_TRANSIENT); sqlite3_bind_int (statement, 2, [d node_id]); }else { NSLog(@"SQLite statement error!"); } if(SQLITE_DONE != sqlite3_step(statement)){ NSAssert1(0, @"Error while updating. '%s'", sqlite3_errmsg(database)); }else { NSLog(@"SQLite Update done!"); }

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  • How can I send email from my application ?

    - by srikanth rongali
    I want to attach a video and send email from my application. I downloaded apples example code MailComposer. I compiled it. I did not get any errors or warnings. I sent the mail to my mail id. But, I could not see any mail in my inbox. I am working on simulator. I did not set any senders email id in simulator. How can I know whether the code is working or not ? Thank You.

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  • predict location of single-line text from a UITextView

    - by William Jockusch
    Is this possible? Specifically, I have a UITextView, and the text is short enough that it will fit on a single line. I want to predict where it will appear, so that (for example) if I wanted to, I could set up a UILabel that rendered the text in exactly the same location. Once I get that figured out, what I really want to do is pick contentInset and/or contentOffset so that the text of the UITextView and the left-justified UILabel will render in the same location. But I figure the above will let me do that. EDIT: In response to a comment, the fundamental problem I am trying to get around is that UITextField does not let you set the location of the cursor. It appears a lot of people have tried to get around this without success. I need to be able to move the cursor -- inserting/deleting text there is not enough. Control cursor position in UITextField Insert string at cursor position of UITextField Moving the cursor to the beginning of UITextField iOS -- dealing with the inability to set the cursor position in a UITextField

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  • NSDateFormatter always return 2010-12-31 23:00:00 +0000

    - by Janky
    Hello! I'm using this code to format a date from a string: NSDateFormatter *dateFormat = [[NSDateFormatter alloc]init]; [dateFormat setDateFormat:@"EEEE, dd MMMM yyyy"]; NSDate *dateStart = [dateFormat dateFromString:[thisEvent dateEvent]]; [thisEvent dateEvent] contains this date: Saturday, 09 April 2011 I don't know why dateStart contains 2010-12-31 23:00:00 +0000 where I'm wrong? Thank You!!

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  • Does Quartz2D test intersection of rect by line before drawing it.

    - by ddnv
    I'm drawing a big scheme that consist of a lot of lines. I do it in the drawRect: method of UIView. The scheme is larger than the layer of view and I check each line and draw it only if it intersects the visible rect. But at one moment I thought, should I do this? Maybe Quartz is already doing this test? So the question is: When I use function CGContextAddLineToPoint() does the Core Graphics tests this line for intersection with layer rect or it just draw it anyway?

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  • image is not getting loaded in view.

    - by anurag
    I have created 2 views named "FirstView" and "SecondView".SecondView's nib file has an UIImage view object as its IBOtlet.Now I am getting an UIImage object from some FirstViewController's method.Now I am setting the SecondViewController's imageView property with that image and then I am pushing my SecondView Controller's object in Navigation Controller.The SecondView gets loaded but that image is not shown in that view. The code is as follows:..... (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)img editingInfo:(NSDictionary *)editInfo { [[picker parentViewController] dismissModalViewControllerAnimated:YES]; SecondViewController *secondView=[[SecondViewController alloc] initWithNibName:@"SecondViewController" bundle:[NSBundle mainBundle]]; secondView.imageView.image=img; [self.navigationController pushViewController:secondView animated:YES]; }

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  • GKSession sendDataToAllPeers getting invalid parameter

    - by cb4
    This is my first post and I wanted to start it by thanking the many stackoverflow contributors who will never know how much they helped me out these past several days as I worked to complete my first iOS app. I am indebted to them and to this site for giving them a place to post. To 'pay off' some of that debt, I hope this will help others as I have been helped... So, my app uses the GKPeerPickerController to make a connection to a 2nd device. Once connected, the devices can send text messages to each other. The receiving peer has the message displayed in a UIAlertView. Everything was working fine. Then I decided to experiment with locations and added code to get the current location. I convert it into latitude & longitude in degrees, minutes, and seconds and put them into one NSString. I added a button to my storyboard called 'Send Location' which, when tapped, sends the location to the connected peer. This is where I ran into the problem. Both the send text and send location methods call the sendPacket method with a NSString. sendPacket converts the string to NSData and calls sendDataToAllPeers. When I learned how to capture the error, it was "Invalid parameter for - sendDataToAllPeers:withDataMode:error:". [.....pause.....] Well, this was going to be a question but in writing all this to explain the problem, the answer just dawned on me. Did a few tests and verified it now works. The issue was not in sendDataToAllPeers, it was in the conversion of the NSString (strToSend) to NSData: packet = [strToSend dataUsingEncoding:NSASCIIStringEncoding]; Specifically, it was the degree sign character (little circle, ASCII 176). NSASCIIStringEncoding only includes ASCII characters up to 127 so don't use any above that. I'm sure there was a quicker way to find the problem, but I don't know Objective-C or Xcode's debugging facility well enough yet. Whew! Several hours to discover that little tidbit. I did learn a lot, though, and that's always a good thing!

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  • MFMailComposeViewController configure mimetype for attachment

    - by user749918
    I need some help. I am trying to attach files to mail using, [mail addAttachmentData:attachmentData mimeType:@"image/png" fileName:fileName]; but the problem is that if i need to send a .jpeg image i need to repeat code just for setting mime type to "mimeType:@"image/jpeg". My question is that is there any general mimeType that can attach any kind of file irrespective of .doc,.ppt,.pdf or an audio or video file. is there any general mimeType: for an kind of attachment. Thanks in advance.

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  • novice needing help on shuffeling an array

    - by steffen Myklebust
    Please help a TOTAL beginner.! I found this post: http://stackoverflow.com/questions/56648/whats-the-best-way-to-shuffle-an-nsmutablearray And as i try to deploy this in my own code, I cant get it working... :-( Can anyone help me to resolve this code? To me it looks like the shuffle function is not called..? here is my code: // // shuffle2ViewController.h // shuffle2 #import @interface shuffle2ViewController : UIViewController { NSMutableArray *puzzles; int *randomSort; } - (void)shuffle; @end //============================= // shuffle2ViewController.m ´#import "shuffle2ViewController.h" @implementation shuffle2ViewController (void)viewDidLoad { [super viewDidLoad]; NSMutableArray *puzzles = [NSMutableArray arrayWithObjects:@"1",@"2",@"3", @"4",@"5",@"6",@"7",@"8",@"9", @"10",@"11",@"12", nil]; // Call the shuffle function [self shuffle]; // print to log int i; NSLog(@"NEW OLD"); NSLog(@"================="); for (i = 0; i < 12; ++i) NSLog(@" %2i %@", i + 1, [puzzles objectAtIndex:i]); } int randomSort(id obj1, id obj2, void *context ) { // returns random number -1 0 1 return (random()%3 - 1); } (void)shuffle { // call custom sort function [puzzles sortUsingFunction:randomSort context:nil]; } Giving this result: NEW OLD ================= 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12

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  • navigationproblem

    - by sudhakarilla
    I have problem .. i get debugerror i will used in json Category *selectcategory = [[data categorys]objectAtindex:indexPath.row]; productlistviewcontroller *plviewcontroller = [[productlistviewcontroller alloc]initwithNibName:@"productlistviewcontroller" bundle:nil]; plviewcontroller.category = selectedcategory; [self.navigationcontroller pushviewcontroller:plviewcontroller animated:YES]; please check the my program. it doesnot goto nextviewcontroller. console error is 2009-02-13 18:32:17.405 xxxxxxxx[1491:20b] * -[NsDecimalNumber length]: unrecognized selector sent to instance 0xc3f10ff0 2009-02-13 18:32:17.406 xxxxxxxx[1491:20b] Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '** -[NsDecimalNumber length ]: unrecognized selector sent to instance 0xc3f10ff0' 2009-02-13 18:32:17.406 xxxxxxxx[1491:20b] Stack: ( 2417225995, 2527100475, 2417255178, 2417248524, 2417248722, 22199, 9853, 816111650, 816149355, 2458333742, 2416728869, 2416729304, 827745792, 827745989, 816114848, 816160924, 9628, 9482 ) please send soluation...

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  • Build UITextview with Line

    - by milanjansari
    Hello everybody, Does anyone idea about how can create UItextivew like same as below so user can easily write text in proper format. please check this link https://devforums.apple.com/message/217857#217857 is this possible, i have no idea about this. please anyone have idea above of the issue. Thanks you,

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  • Couldn't I just pass an copied string to an Core Data property?

    - by dontWatchMyProfile
    The docs say: The default implementation does not copy attribute values. If the attribute value may be mutable and implements the NSCopying protocol (as is the case with NSString, for example), you can copy the value in a custom accessor to help preserve encapsulation (for example, in the case where an instance of NSMutableString is passed as a value). So instead of getting into trouble and inconvenience with overwriting accessors in my NSManagedObject subclass, couldn't I simply do something like this? myManagedObject.firstName = [[firstNameMutableStr copy] autorelease]; This would have the exact same effect, or not? The dynamic implementation would retain that anyways ... so.... why not the easy way?

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  • UIPickerview filter list from a user previous textfield input

    - by user1547180
    int variabla; - (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView { return 1; } - (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component { if (variabla == 1) return list4.count; else if(variabla == 2) return list3.count; if (variabla == 3) return list1.count; if (variabla == 4) return list2.count; return YES; [pickerView reloadAllComponents]; } - (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component { if (variabla == 1) { subjectField.text = [list4 objectAtIndex:row]; } else if (variabla == 2) { gradeField.text = [list3 objectAtIndex:row]; } else if (variabla == 3) { mathField.text = [list1 objectAtIndex:[pickerView selectedRowInComponent:0]]; selectedRow = [pickerView selectedRowInComponent:0]; coreTView.text = [mathMeaning objectAtIndex:selectedRow]; } if (variabla == 4) { elaField.text = [list2 objectAtIndex:[pickerView selectedRowInComponent:0]]; selectedRow = [pickerView selectedRowInComponent:0]; coreTView.text = [elaMeaning objectAtIndex:selectedRow]; } [pickerView reloadAllComponents]; NSLog(@"row selected is %d", selectedRow); } - (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component { if (variabla == 1) return [list4 objectAtIndex:row]; if (variabla == 2) return [list3 objectAtIndex:row]; if (variabla == 3) return [list1 objectAtIndex:row]; if (variabla == 4) return [list2 objectAtIndex:row]; return NO; [pickerView reloadAllComponents]; } Hey I would like to know or pointed in the right direction on how to load a UIPickerView based on the user input from a previous uitextfield so if they type in the previous textfield apple I would like red, green, blue to show in the UIPickerView or if they type orange I would like to see orange, yellow grape thanks for the help in advance.

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  • Can two managed object context share one single persistent store coordinator?

    - by mystify
    Example: I have one persistent store coordinator which uses one single persistent store. Now there are two managed object contexts, and both want to use the same persistent store. Could both simply use the same persistent store coordinator, or would I have to create two instances of NSPersistentStoreCoordinator? And if I had to, then: Would I also have to create two NSPersistentStore instances?

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  • How to programaticly access min and Max values defined in a core-data model designed with XCode ?

    - by Xav
    I was expecting to find that in the NSAttributeDescription class, but only the default value is there. Behind the scene I tought a validationPredicate was created but trying to reach it using NSDictionary* dico= [[myManagedObject entity] propertiesByName]; NSAttributeDescription* attributeDescription=[dico objectForKey:attributeKey]; for (NSString* string in [attributeDescription validationWarnings]) just get me nowhere, no validationWarnings, no validationPredicates... any thoughts on this ? Edit1: It seems that getting the entity straight from the managedObject doesn't give you the full picture. Getting the Entity from the NSManagedObjectModel permits to reach the validationWarnings & validationPredicates...

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  • Identify html tags for image, video in text and convert them into images, videos while laying dynami

    - by neha
    Hi all, In my app I need to lay some text which I'm getting from a parsed data. Currently I'm currently laying it in a label. The problem is there are going to be some html tags indicating an image [along with its url] and videos etc in that plaintext. What is a good way to handle this identifying images and videos tags and laying corresponding images and videos along with rest of the plaintext dynamically? Thanx in advance.

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  • question related to UITextView

    - by user177893
    I have n number of UITextview and that are added to UIScrollview.and uiscrollview is added to self.view.Now,I want that 1If user enter text in first UITextview ,then as lenth increase os UITextview ,another UITextviews which are below it also reinitialize and maintain properly according to the size of first UITextView.inshort another UITextviews go more below then it was. 2It should work in any of the case ,wether user presses return key after entering text into UITextView or may be not till end

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  • UIView surface Detection

    - by Sanjay Darshil
    In my code I crated two UIView View1 and View2 out of which View2 rotates on finger touch using CGAffineTransform and View1 is drawn like Arrow shaped (triangle) using CGContext. The View1 is steady view (fixed) which Points (shown directed Up) to the Surface of View2 , So I want to detect the View2 surface points when it stopped rotation and appears in front of the view1. How can I made this possible to detect the UIView Surface when it appears in front of another UIView?

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