my program always an error of threads.
error that appears at compile time
http://imgur.com/6rGkwKd
1. My .h
import
#interface PerfilViewController : UIViewController
<UIImagePickerControllerDelegate,UINavigationControllerDelegate>
#property (weak, nonatomic) IBOutlet UIImageView *fotoPerfil;
#property (weak, nonatomic) IBOutlet UIButton *botaoSalvarFoto;
#property (nonatomic) UIImagePickerController *pegarFoto;
-(IBAction)salvarFoto:(UIButton *)sender;
#end
2. My .m
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
_pegarFoto = [[UIImagePickerController alloc]init];
_pegarFoto.delegate = self;
_pegarFoto.sourceType = UIImagePickerControllerSourceTypeCamera;
}
-(IBAction)salvarFoto:(UIButton *)sender {
[self presentViewController:_pegarFoto animated:YES completion:nil];
}
-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)img editingInfo:(NSDictionary *)editInfo {
_fotoPerfil.image = img;
[[picker parentViewController] dismissViewControllerAnimated:YES completion:nil];
}
Related
I've been working on a app that displays the current location of the user in a UILabel using the core location framework in Xcode When a button is clicked the app calls the CLLocationManager that gets the users latitude and longitude. I also included reverse geocoding to present the coordinates in a human readable form. I have this code here.
Header file
#import <UIKit/UIKit.h>
#import <CoreLocation/CoreLocation.h>
#interface ViewController : UIViewController <CLLocationManagerDelegate>
#property (strong, nonatomic) IBOutlet UILabel *latitudeLabel;
#property (strong, nonatomic) IBOutlet UILabel *longitudeLabel;
#property (strong, nonatomic) IBOutlet UILabel *addressLabel;
- (IBAction)getCurrentLocation:(id)sender;
#end
Implementation file
#import "ViewController.h"
#interface ViewController ()
#end
#implementation ViewController {
CLLocationManager *locationManager;
}
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
locationManager = [[CLLocationManager alloc] init];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (IBAction)getCurrentLocation:(id)sender {
locationManager.delegate = self;
locationManager.desiredAccuracy = kCLLocationAccuracyBest;
[locationManager startUpdatingLocation];
}
#pragma mark - CLLocationManagerDelegate
- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error
{
NSLog(#"didFailWithError: %#", error);
UIAlertView *errorAlert = [[UIAlertView alloc]
initWithTitle:#"Error" message:#"Failed to Get Your Location" delegate:nil cancelButtonTitle:#"OK" otherButtonTitles:nil];
[errorAlert show];
}
- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{
NSLog(#"didUpdateToLocation: %#", newLocation);
CLLocation *currentLocation = newLocation;
if (currentLocation != nil) {
_longitudeLabel.text = [NSString stringWithFormat:#"%.8f", currentLocation.coordinate.longitude];
_latitudeLabel.text = [NSString stringWithFormat:#"%.8f", currentLocation.coordinate.latitude];
}
}
#end
I got this output
Message from debugger: Terminated due to signal 15
I have a TableViewController subclass with one prototype cell designed in storyboard. Then I am passing the references to the class header etc and for some reason it fails to compile it. But the connections seem fine. I provide you the code and pictures of the build errors and the storyboard. I am using Xcode 4.3.3. Any help is really appreciated.
favTable.h
#import <UIKit/UIKit.h>
#interface favTable : UITableViewController <NSFetchedResultsControllerDelegate>
{
NSFetchedResultsController *fetchedResultsController;
NSManagedObjectContext *managedObjectContext;
NSArray *favArr;
NSMutableArray *favName;
NSMutableArray *favScore;
}
#property (nonatomic, retain) NSArray *favArr;
#property (nonatomic, retain) NSManagedObjectContext *managedObjectContext;
#property (nonatomic, strong) NSMutableArray *favName;
#property (nonatomic, strong) NSMutableArray *favScore;
#property (nonatomic, retain) NSFetchedResultsController *fetchedResultsController;
#property (strong, nonatomic) IBOutlet UITableViewCell *celldes;
#property (strong, nonatomic) IBOutlet UIImageView *cellimage;
#property (strong, nonatomic) IBOutlet UILabel *cellname;
#property (strong, nonatomic) IBOutlet UILabel *cellmanu;
#property (strong, nonatomic) IBOutlet UILabel *cellscore;
#end
favTable.m
#import "favTable.h"
#import "ecoAppDelegate.h"
#interface favTable ()
#end
#implementation favTable
#synthesize favArr;
#synthesize managedObjectContext;
#synthesize fetchedResultsController;
#synthesize favName;
#synthesize favScore;
#synthesize celldes;
#synthesize cellimage;
#synthesize cellname;
#synthesize cellmanu;
#synthesize cellscore;
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
self.title = #"Favorites";
self.navigationController.navigationBar.translucent = NO;
// passing the array of addedtofavorites to the total one with all favorites
self.managedObjectContext = ((ecoAppDelegate *) [UIApplication sharedApplication].delegate).managedObjectContext;
NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init];
NSEntityDescription *entity = [NSEntityDescription
entityForName:#"FavoritesInfo" inManagedObjectContext:managedObjectContext];
[fetchRequest setEntity:entity];
fetchRequest.resultType = NSDictionaryResultType;
[fetchRequest setPropertiesToFetch:[NSArray arrayWithObjects:#"name", nil]];
NSError *error=nil;
self.favArr=[[self.managedObjectContext executeFetchRequest:fetchRequest error:&error]mutableCopy];
if (error!=nil) {
NSLog(#" fetchError=%#,details=%#",error,error.userInfo);
}
self.favName = [[self.favArr valueForKey:#"name"] mutableCopy];
self.favScore = [[self.favArr valueForKey:#"score"] mutableCopy];
}
- (void)viewDidUnload
{
[self setCelldes:nil];
[self setCellimage:nil];
[self setCellname:nil];
[self setCellmanu:nil];
[self setCellscore:nil];
[super viewDidUnload];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
#warning Potentially incomplete method implementation.
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
#warning Incomplete method implementation.
// Return the number of rows in the section.
return [favName count];;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
// Configure the cell...
UITableViewCell* cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
cellname.text = #"Test";
return cell;
}
#end
I moved manually the IB outlets into a separate custom cell class and then linked the references to the storyboard (maybe this is fixed in newer versions)
Then applied that cell style in the prototype cell and simply changed the content of the UI items of my cell using the identifier (no tag was needed)
Creating an app on Xcode 4.5.1 and wondering how do i save the current image in the specified UIImageView when i navigate to a different view. Then when i return to the View it loads up the saved image into the UIImageView?
Thank a lot, appreciate it :D
The code I've posted below involves passing a uiimage to a second view controller. It also includes a button on each controller to move back and forth between the two. The saved image will stay in the uiimageview when you switch to and from the views.
SecondView.h
#import <UIKit/UIKit.h>
#interface SecondView : UIViewController {
IBOutlet UIImageView *yourphotoview;
UIImage *yourimage;
}
#property (retain, nonatomic) UIImage *yourimage;
- (IBAction)back;
#end
SecondView.m
#import "ViewController.h"
#import "SecondView.h"
#interface SecondView ()
#end
#implementation SecondView
#synthesize yourimage;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
yourphotoview.image = image;
[super viewDidLoad];
// Do any additional setup after loading the view.
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (IBAction)back {
[self dismissViewControllerAnimated:YES completion:NULL];
}
- (void)dealloc {
[image release];
[super dealloc];
}
#end
ViewController.h
#import <UIKit/UIKit.h>
#import "SecondView.h"
#interface ViewController : UIViewController
{
IBOutlet UISlider *compression;
IBOutlet UISwitch *smurferderp;
SecondView *SecondViewdata;
}
#property (retain, nonatomic) SecondView *SecondViewdata;
#property (retain, nonatomic) IBOutlet UIImageView *theimage;
- (IBAction)switchview:(id)sender;
#end
ViewController.m
#import "ViewController.h"
#import "SecondView.h"
#interface ViewController ()
#end
#implementation ViewController
#synthesize SecondViewdata, theimage;
- (IBAction)switchview:(id)sender {
SecondView *secondview = [self.storyboard instantiateViewControllerWithIdentifier:#"rr"];
self.SecondViewdata = secondview;
SecondViewdata.yourimage = theimage.image;
[self presentViewController: secondview animated:YES completion:NULL];
}
- (void)dealloc {
[theimage release];
[super dealloc];
}
#end
I present the view controller like this:
FBViewController *fbViewController =[[FBViewController alloc] initWithNibName:#"FBViewController" bundle:nil];
fbViewController.label.text=#"hello"; // I set the value of the property label which is the outlet
[self presentModalViewController:fbViewController animated:YES];
FBViewController.h:
#import <UIKit/UIKit.h>
#interface FBViewController : UIViewController
#property (weak, nonatomic) IBOutlet UILabel *label;
#end
FBViewController.m:
...
- (void)viewDidLoad
{
[super viewDidLoad];
NSLog(#"%#", self.label.text); // Here instead of "hello" i get the value which was in nib file.
}
...
The question is how to set the value of the label?
You can pass the NSString retrieve text to assign label modalview controller:
FBViewController *fbViewController =[[FBViewController alloc] initWithNibName:#"FBViewController" bundle:nil];
fbViewController.labeltext=#"Your Text";
[self presentModalViewController:fbViewController animated:YES];
FBViewController.h
#interface FBViewController : UIViewController {
NSString *labeltext;
}
#property (nonatomic, retain) NSString *labeltext;
and use view to load method in FBViewController.m
- (void)viewDidLoad {
label1.text=labeltext;
}
EDIT 1: changed the code to:
delegate.h:
#import <UIKit/UIKit.h>
#class ViewController;
#interface AppDelegate : NSObject <UIApplicationDelegate> {
UIWindow *window;
ViewController *viewController;
UIImageView *splashView;
}
#property (nonatomic, retain) IBOutlet UIWindow *window;
#property (nonatomic, retain) IBOutlet ViewController *viewController;
#property (nonatomic, retain) IBOutlet UIImageView *splashView;
- (void)removeSplash;
#end
delegate.m:
#import "AppDelegate.h"
#import "ViewController.h"
#implementation AppDelegate
#synthesize window;
#synthesize viewController;
#synthesize splashView;
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
splashView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 320, 480)];
splashView.image = [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:#"Splash" ofType:#"png"]];
[window addSubview:splashView];
[window bringSubviewToFront:splashView];
[window makeKeyAndVisible];
[self performSelector:#selector(removeSplash) withObject:nil afterDelay:5.0];
[window addSubview:viewController.view];
return YES;
}
- (void)removeSplash {
[splashView removeFromSuperview];
[splashView release];
}
- (void)dealloc {
[viewController release];
[window release];
[super dealloc];
}
#end
EDIT 2:
when I use:
splashView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 320, 480)];
splashView.image = [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:#"Splash" ofType:#"png"]];
if (splashView.image == nil) {
NSLog(#"splashView is nil");
}
it logs "splashView is nil"
My Viewcontroller is empty, just for debugging purposes.
As you probably already know, splash screens are discouraged. Since your image is Default.png, isn't it already being shown on app launch automatically?
In any case, the sleep() call is probably blocking the UI. Remove the sleep() and move the statements after it (the removeFromSuperview, etc) to another method in the app delegate. Call this method using performSelector:withObject:afterDelay:. Put the performSelector call where you currently have the sleep call.
Also, you should use the didFinishLaunchingWithOptions method instead of the old applicationDidFinishLaunching method.