I am creating an app that pulls data from a server and pinpoints the different houses on a map. My problem is that it does display the annotations but when I click on them they do not respond
- (void)mapView:(MKMapView *)mapView didSelectAnnotationView:(MKAnnotationView *)view
I put my annotations in an array by:
int s;
self.mapAnnotations = [[NSMutableArray alloc] init];
for(s=0; s < numberOfAnnotations; s++)
{
//NSDictionary *dict2 = [parser objectWithString:[[arrayOfResults objectAtIndex:0] description]];
CLLocationDegrees daLong = [[[[[arrayOfResults objectAtIndex:s] objectForKey:#"map"] objectForKey:#"longitude"] description] floatValue];
CLLocationDegrees daLat = [[[[[arrayOfResults objectAtIndex:s] objectForKey:#"map"] objectForKey:#"latitude"] description] floatValue];
/*self.customAnnotation = [[BasicMapAnnotation alloc] initWithLatitude:daLat andLongitude:daLong];
[self.mapView addAnnotation:self.customAnnotation];*/
BasicMapAnnotation *m = [[BasicMapAnnotation alloc] initWithLatitude:daLat andLongitude:daLong];
[self.mapAnnotations addObject:m];
}
[self.mapView addAnnotations:self.mapAnnotations];
NSLog(#"this number of annotations %d", [self.mapAnnotations count]);
I also noticed when I created a separate house to place on the map in my viewDidLoad:
self.normalAnnotation = [[BasicMapAnnotation alloc] initWithLatitude:38 andLongitude:-90.2045];
self.normalAnnotation.title = #" ";
[self.mapView addAnnotation:self.normalAnnotation];
It did work when I clicked on it, but the ones passed through the array didn't work.
Can anyone help me figure out why it's not responding?
That's because annotations should have a title for them to display a callout. In your for loop, set the title property like you did with self.normalAnnotation.title = #" ".
Related
OK so I am attempting to add an array of SCNGeometry to an SCNMorpher object and add this object to the root node on a scene and export the result to a DAE file.
For some reason, whenever I attempt to save the file I get a BAD_ACCESS error on the writeToURL call.
This only happens if I set the node.morpher property. It happens even if I set the morpher property to [[SCNMorpher alloc] init]] or to an instance with an empty array of targets.
This is on a Mac app.
My code:
NSMutableArray *frames = [[NSMutableArray alloc] init];
for (int f=0; f<self.Animations[0].framesCount; f++) {
SCNGeometry *frameGeo = [self MorphedModel:self.Animations[0] atFrame:f+1];
SCNMaterial *framemat = [SCNMaterial material];
framemat.diffuse.contents = texture;
framemat.name = #"Dino Skin";
frameGeo.firstMaterial = framemat;
[frames addObject:frameGeo];
}
self.MorphedModels = [[SCNMorpher alloc] init];
self.MorphedModels.targets = [[NSArray alloc] initWithArray:frames];
node.morpher = self.MorphedModels;
SCNScene *scene = [SCNScene scene];
[scene.rootNode addChildNode:node];
NSString *path = [NSHomeDirectory() stringByAppendingPathComponent:#"Documents/Dino.dae"];
[scene writeToURL:[NSURL fileURLWithPath:path] options:nil delegate:nil progressHandler:nil];
Any ideas? I'm clueless at this point.
Ah I figured it out. There isn't any documentation on this but it makes sense. You have to set one of the targets to a full weight (1.0f) on your SCNMorpher instance:
[self.MorphedModels setWeight:1.0f forTargetAtIndex:0];
Once I did this, everything saved correctly.
I want to show to location name and the pin point in my mapView.I Tried many ways but none of them help me. And I am stuck at this position.
i am using this piece of code:
-(void)getMe:(id)sender
{
[self.view endEditing:YES];
NSString *addresss = userText.text;
NSString *esc_addr = [addresss stringByAddingPercentEscapesUsingEncoding: NSUTF8StringEncoding];
NSString *req = [NSString stringWithFormat: #"http://maps.google.com/maps/api/geocode/json?sensor=false&address=%#", esc_addr];
NSData *data = [NSData dataWithContentsOfURL:[NSURL URLWithString:req]];
NSDictionary *googleResponse = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil];
NSDictionary *resultsDict = [googleResponse valueForKey: #"results"]; // get the results dictionary
NSDictionary *geometryDict = [ resultsDict valueForKey: #"geometry"]; // geometry dictionary within the results dictionary
NSDictionary *locationDict = [ geometryDict valueForKey: #"location"]; // location dictionary within the geometry dictionary
// nslo (#”– returning latitude & longitude from google –”);
NSArray *latArray = [locationDict valueForKey: #"lat"]; NSString *latString = [latArray lastObject]; // (one element) array entries provided by the json parser
NSArray *lngArray = [locationDict valueForKey: #"lng"]; NSString *lngString = [lngArray lastObject]; // (one element) array entries provided by the json parser
myLocation.latitude = [latString doubleValue]; // the json parser uses NSArrays which don’t support “doubleValue”
myLocation.longitude = [lngString doubleValue];
CLLocationCoordinate2D zoomLocation;
zoomLocation.latitude = myLocation.latitude;
zoomLocation.longitude=myLocation.longitude;
// 2
MKCoordinateRegion viewRegion = MKCoordinateRegionMakeWithDistance(zoomLocation, 0.5*1500, 0.5*1500);
MKPointAnnotation *point = [[MKPointAnnotation alloc] init];
CLLocationCoordinate2D coordinates;
coordinates.latitude = myLocation.latitude;
coordinates.longitude=myLocation.longitude;
point.coordinate =coordinates;
point.title = #"My Location";
point.subtitle = #"Reached";
[mp addAnnotation:point];
// 3
[mp setRegion:viewRegion animated:YES];
}
mp is my mapView Outlet.I am geting this output:
But I want location title with pin. What can i do to achieve this.
- (void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation
{
MKCoordinateRegion region = MKCoordinateRegionMakeWithDistance(userLocation.coordinate, 800, 800);
[self.mapView setRegion:[self.mapView regionThatFits:region] animated:YES];
// Add an annotation
MKPointAnnotation *point = [[MKPointAnnotation alloc] init];
point.coordinate = userLocation.coordinate;
point.title = #"Where am I?";
point.subtitle = #"I'm here!!!";
[self.mapView addAnnotation:point];
}
I have a problem with the PIn color mapView when a refresh is done.
In my I app i display some point with two color in order to identify if a service is available.
On the first start, no problems appear. The code is the follower:
- (void)viewDidLoad
{
[super viewDidLoad];
[self dowloadPoint]; // here I exucte the first start
}
- (void)dowloadPoint{
NSURL *url1 =[NSURL URLWithString:#"http:MYUSRL"];
NSData *datos1 =[[NSData alloc] initWithContentsOfURL:url1];
[self plotBarPosition:datos_string1]; //Here I call the plotBarPosition method
}
- (void)plotBarPosition:(NSString *)datos_string1 {
for (id<MKAnnotation> annotation in _mapView.annotations) {
[_mapView removeAnnotation:annotation];
}
// Parse the string into JSON
NSDictionary *json = [(NSDictionary*)[datos_string1 JSONValue]objectForKey:#"features"];
// Get the objects you want, e.g. output the second item's client id
NSArray *items_properties = [json valueForKeyPath:#"properties"];
NSArray *items_geo = [json valueForKeyPath:#"geometry"];
for (int i = 0; i < [json count]; i++){
NSString *nomprePunto =[[items_properties objectAtIndex:i] objectForKey:#"title"];
NSNumber *lat =[[[items_geo objectAtIndex:i] objectForKey:#"coordinates"] objectAtIndex:0];
NSNumber *lon =[[[items_geo objectAtIndex:i] objectForKey:#"coordinates"] objectAtIndex:1];
CLLocationCoordinate2D coordinate;
coordinate.latitude = lat.doubleValue;
coordinate.longitude = lon.doubleValue;
//ESTADO
NSString *description = [[items_properties objectAtIndex:i] objectForKey:#"description"];
NSString *estado_punto = [[NSString alloc]init];
if ([description rangeOfString:#"Averiado"].location == NSNotFound) {
estado_punto = #"Available";
} else {
estado_punto = #"NOt Available";
averiados ++;
}
NSString *averiadosStr = [NSString stringWithFormat:#"%d",averiados];
averiadosLabel.text = averiadosStr;
MyLocation *location =[[MyLocation alloc] initWithName:nomprePunto coordinate:coordinate estado:estado_punto];
[_mapView addAnnotation:location];
}
}
- (MKPinAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(MyLocation *)annotation {
static NSString *identifier = #"MyLocation";
if ([annotation isKindOfClass:[MyLocation class]]) {
MKPinAnnotationView *annotationView = (MKPinAnnotationView *) [_mapView dequeueReusableAnnotationViewWithIdentifier:identifier];
if (annotationView == nil) {
annotationView = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:identifier];
annotationView.enabled = YES;
annotationView.canShowCallout = YES;
if([[annotation estado] isEqualToString:#"En Servicio"])
annotationView.pinColor = MKPinAnnotationColorGreen;
} else {
annotationView.annotation = annotation;
}
return annotationView;
}
return nil;
}
But whe I add a refres button that is function is simply a refreshcalling the dowloadPoint once again,
- (IBAction)refresh{
[self dowloadPoint];
}
the color of pins change in a "random manner", not corrisponding with the real state of point.
Any ideas about what is happening? Thanks in advance.
EDIT: It seemps pproblems is due to:
for (id<MKAnnotation> annotation in _mapView.annotations) {
[_mapView removeAnnotation:annotation];
}
erasing it, the app work properly but pins area drown abow the previous ones...:S
The default color of the pin is red. You set it to green if the estado property of your MyLocation object is equal to #"En Servicio". I understand that sometimes the color is red, when your estado property is equal to #"En Servicio", or sometimes green when it is not.
One reason could be that your MyLocation object simply does no longer exist when you press the refresh button. In this case, you might still have a pointer to the memory location where it once existed, but this location may have been overwritten by anything, causing a random color.
This can happen e.g. if your MyLocation object has been created as an autorelease object that has been released when you returned to the main event loop, i.e. to handle user interactions.
This should not be the case if you are using ARC.
Everybody..
I am trying to develop an app for iPhone which basicly deals with ABAddressBook and contacts data...
My goal is to send all the contacts data (at first step, names and phones) in a file by e-mail..
Now, I am trying to reach the contacts data, and I want to add them to two different arrays, names and phones arrays..
At first, I am trying to see all the datas in the screen when i pressed a button "List Contacts". the datas should be seen on the screen. and then when i pressed the second button "Send Contacts", it should send the file to an e-mail account.. This is how my apps will work..
I am having problems at showing the data on the screen.. I wrote something but it doesn't give anything on the screen in a textView..
Can you help me to solve this problem?
Here's the code for listing the contacts (listCon method):
-(IBAction)listCon:(id)sender
{
NSMutableArray *names = [[NSMutableArray alloc] init];
NSMutableArray *numbers1= [[NSMutableArray array] init];
NSMutableArray *numbers2= [[NSMutableArray array] init];
NSMutableArray *numbers3= [[NSMutableArray array] init];
ABAddressBookRef addressBook = ABAddressBookCreate();
if (addressBook != nil)
{
NSLog(#"Successfully accessed the address book.");
CFArrayRef allPeople = ABAddressBookCopyArrayOfAllPeople(addressBook);
CFIndex nPeople= ABAddressBookGetPersonCount(addressBook);
NSUInteger peopleCounter = 0;
for (peopleCounter = 0;peopleCounter < nPeople; peopleCounter++)
{
ABRecordRef thisPerson = CFArrayGetValueAtIndex(allPeople,peopleCounter);
NSString *contactFirstLast = [NSString stringWithFormat:#"%,%",ABRecordCopyValue(thisPerson, kABPersonFirstNameProperty), ABRecordCopyValue(thisPerson,kABPersonLastNameProperty)];
[names insertObject:contactFirstLast atIndex:peopleCounter];
ABMultiValueRef phoneNumbers = ABRecordCopyValue(thisPerson,kABPersonPhoneProperty);
NSString *firstPhone = (__bridge_transfer NSString*) ABMultiValueCopyValueAtIndex(phoneNumbers, 0);
NSString *secondPhone = (__bridge_transfer NSString*) ABMultiValueCopyValueAtIndex(phoneNumbers, 1);
NSString *thirdPhone = (__bridge_transfer NSString*) ABMultiValueCopyValueAtIndex(phoneNumbers, 2);
[numbers1 insertObject:firstPhone atIndex:peopleCounter];
[numbers2 insertObject:secondPhone atIndex:peopleCounter];
[numbers3 insertObject:thirdPhone atIndex:peopleCounter];
}
}
myView.text=[names componentsJoinedByString:#"\n\n"];
myView.text=[numbers1 componentsJoinedByString:#"\n\n"];
myView.text=[numbers2 componentsJoinedByString:#"\n\n"];
myView.text=[numbers3 componentsJoinedByString:#"\n\n"];
}
Just glancing at your code, you can't do this:
NSString *contactFirstLast = [NSString stringWithFormat:#"%,%",ABRecordCopyValue(thisPerson, kABPersonFirstNameProperty), ABRecordCopyValue(thisPerson,kABPersonLastNameProperty)];
There are several errors: first off % in your stringWithFormat: is not a format specifier; you probably are thinking of %#. Second off, copying the value of kABPersonFirstNameProperty will return a CFStringRef, and that's not what you want to display the name in a text field. You'll have to toll-free bridge the result of ABRecordCopyValue(). You can do this by adding this line - (__bridge_transfer NSString *) - in front of your ABRecordCopyValue()'s. With all the corrections, it should look like this:
NSString *contactFirstLast = [NSString stringWithFormat:#"%#,%#", (__bridge_transfer NSString *)ABRecordCopyValue(thisPerson, kABPersonFirstNameProperty), (__bridge_transfer NSString *)ABRecordCopyValue(thisPerson,kABPersonLastNameProperty)];
Hope this help (might not cover all errors)!
I'm relatively new to Core Data on iOS, but I think I've been getting better with it. I've been experiencing a bizarre crash, however, in one of my applications and have not been able to figure it out.
I have approximately 40 objects in Core Data, presented in a UITableView. When tapping on a cell, a UIActionSheet appears, presenting the user with a UIActionSheet with options related to the cell that was selected. So that I can reference the selected object, I declare an NSIndexPath in my header called "lastSelection" and do the following when the UIActionSheet is presented:
// Each cell has a tag based on its row number (i.e. first row has tag 0)
lastSelection = [NSIndexPath indexPathForRow:[sender tag] inSection:0];
NSManagedObject *managedObject = [self.fetchedResultsController objectAtIndexPath:lastSelection];
BOOL onDuty = [[managedObject valueForKey:#"onDuty"] boolValue];
UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:#"Status" delegate:self cancelButtonTitle:nil destructiveButtonTitle:nil otherButtonTitles:nil];
if(onDuty) {
[actionSheet addButtonWithTitle:#"Off Duty"];
} else {
[actionSheet addButtonWithTitle:#"On Duty"];
}
actionSheet.actionSheetStyle = UIActionSheetStyleBlackOpaque;
// Override the typical UIActionSheet behavior by presenting it overlapping the sender's frame. This makes it more clear which cell is selected.
CGRect senderFrame = [sender frame];
CGPoint point = CGPointMake(senderFrame.origin.x + (senderFrame.size.width / 2), senderFrame.origin.y + (senderFrame.size.height / 2));
CGRect popoverRect = CGRectMake(point.x, point.y, 1, 1);
[actionSheet showFromRect:popoverRect inView:[sender superview] animated:NO];
[actionSheet release];
When the UIActionSheet is dismissed with a button, the following code is called:
- (void)actionSheet:(UIActionSheet *)actionSheet willDismissWithButtonIndex:(NSInteger)buttonIndex {
// Set status based on UIActionSheet button pressed
if(buttonIndex == -1) {
return;
}
NSManagedObject *managedObject = [self.fetchedResultsController objectAtIndexPath:lastSelection];
if([actionSheet.title isEqualToString:#"Status"]) {
if([[actionSheet buttonTitleAtIndex:buttonIndex] isEqualToString:#"On Duty"]) {
[managedObject setValue:[NSNumber numberWithBool:YES] forKey:#"onDuty"];
[managedObject setValue:#"onDuty" forKey:#"status"];
} else {
[managedObject setValue:[NSNumber numberWithBool:NO] forKey:#"onDuty"];
[managedObject setValue:#"offDuty" forKey:#"status"];
}
}
NSError *error;
[self.managedObjectContext save:&error];
[tableView reloadData];
}
This might not be the most efficient code (sorry, I'm new!), but it does work. That is, for the first 25 items in the list. Selecting the 26th item or beyond, the UIActionSheet will appear, but if it is dismissed with a button, I get a variety of errors, including any one of the following:
[__NSCFArray section]: unrecognized selector sent to instance 0x4c6bf90
Program received signal: “EXC_BAD_ACCESS”
[_NSObjectID_48_0 section]: unrecognized selector sent to instance 0x4c54710
[__NSArrayM section]: unrecognized selector sent to instance 0x4c619a0
[NSComparisonPredicate section]: unrecognized selector sent to instance 0x6088790
[NSKeyPathExpression section]: unrecognized selector sent to instance 0x4c18950
If I comment out NSManagedObject *managedObject = [self.fetchedResultsController objectAtIndexPath:lastSelection]; it doesn't crash anymore, so I believe it has something do do with that. Can anyone offer any insight? Please let me know if I need to include any other information. Thanks!
EDIT: Interestingly, my fetchedResultsController code returns a different object every time. Is this expected, or could this be a cause of my issue? The code looks like this:
- (NSFetchedResultsController *)fetchedResultsController {
/*
Set up the fetched results controller.
*/
// Create the fetch request for the entity.
NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init];
// Edit the entity name as appropriate.
NSEntityDescription *entity = [NSEntityDescription entityForName:#"Employee" inManagedObjectContext:self.managedObjectContext];
[fetchRequest setEntity:entity];
// Set the batch size to a suitable number.
[fetchRequest setFetchBatchSize:80];
// Edit the sort key as appropriate.
NSString *sortKey;
BOOL ascending;
if(sortControl.selectedSegmentIndex == 0) {
sortKey = #"startTime";
ascending = YES;
} else if(sortControl.selectedSegmentIndex == 1) {
sortKey = #"name";
ascending = YES;
} else {
sortKey = #"onDuty";
ascending = NO;
}
NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:sortKey ascending:ascending];
NSArray *sortDescriptors = [[NSArray alloc] initWithObjects:sortDescriptor, nil];
[fetchRequest setSortDescriptors:sortDescriptors];
// Edit the section name key path and cache name if appropriate.
NSFetchedResultsController *aFetchedResultsController = [[NSFetchedResultsController alloc] initWithFetchRequest:fetchRequest managedObjectContext:self.managedObjectContext sectionNameKeyPath:nil cacheName:#"Root"];
aFetchedResultsController.delegate = self;
self.fetchedResultsController = aFetchedResultsController;
[aFetchedResultsController release];
[fetchRequest release];
[sortDescriptor release];
[sortDescriptors release];
NSError *error = nil;
if (![fetchedResultsController_ performFetch:&error]) {
/*
Replace this implementation with code to handle the error appropriately.
abort() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development. If it is not possible to recover from the error, display an alert panel that instructs the user to quit the application by pressing the Home button.
*/
//NSLog(#"Unresolved error %#, %#", error, [error userInfo]);
abort();
}
return fetchedResultsController_;
}
This happens when I set a breakpoint:
(gdb) po [self fetchedResultsController]
<NSFetchedResultsController: 0x61567c0>
(gdb) po [self fetchedResultsController]
<NSFetchedResultsController: 0x4c83630>
It's prob the case that self.fetchedResultsController is pointing to the wrong memory location. You will need to check if the object has been retained.
Figured it out! Looks like it was an issue with autoreleased objects.
When I turned on NSZombieEnabled, I got this:
*** -[NSIndexPath section]: message sent to deallocated instance 0xa674530
I simply changed lastSelection = [NSIndexPath indexPathForRow:[sender tag] inSection:0]; to lastSelection = [[NSIndexPath indexPathForRow:[sender tag] inSection:0] retain]; and that took care of it.