Bild angezapft von UIPickerView

Question

Guten Tag,

Ich habe ein UIPickerView, die in UIPickerView ausgewählte Bilder von Vögeln, anderes Bild mit verschiedenen Reihe zeigt, jetzt habe ich das Bild für weitere Informationen über den Vogel erschließen wollen, also bin ich Ich denke über ein TextView nach, das erscheint, wenn das Bild angetippt wird. Wie würde ich das in meinem Code implementieren? Ich bin neu im Programmieren und jede Hilfe wird sehr geschätzt. Das ist bisher mein Code.

- (void)viewDidLoad 
{ 
[super viewDidLoad]; 
// Do any additional setup after loading the view. 
//Load up NSArray object 
_fuglar = [[NSArray alloc]initWithObjects:@"Allt árið",@"Hrafn", @"Svartbakur",@"Silfurmáfur",@"Sílamáfur",@"Frá 20.ágúst til 15.mars",@"Grágæs",@"Heiðagæs",@"Frá 1.september til 15.mars",@"Fýll",@"Dílaskarfur",@"Toppskarfur",@"Helsingi",@"Stokkönd", @"Urtönd",@"Rauðhöfðaönd",@"Duggönd",@"Skúfönd",@"Hávella",@"Toppönd",@"Hvítmáfur",@"Hettumáfur",@"Rita",@"Frá 15.apríl til 14.júlí",@"Kjói(í og við friðlýst æðarvarp)",@"Frá 1.september til 25.apríl",@"Álka",@"Langvía",@"Stuttnefja",@"Teista",@"Lundi",@"-Breytilegt-",@"Rjúpa", nil]; 
} 

- (void)didReceiveMemoryWarning 
{ 
[super didReceiveMemoryWarning]; 
// Dispose of any resources that can be recreated. 
} 
#pragma mark - UIPickerView Methods 
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView 
{ 
return 1; 
} 

- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component 
{ 
return _fuglar.count; 
} 

- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component 
{ 
return [_fuglar objectAtIndex:row]; 
} 
- (UIView *)pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent:(NSInteger)component reusingView:(UIView *)view 

{ 
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 300, 37)]; 
label.textAlignment = NSTextAlignmentCenter; 
label.backgroundColor = [UIColor clearColor]; 
label.font = [UIFont fontWithName:@"Helvetica" size:22]; 
if (row == 0 || row == 5 || row == 8 || row == 23 || row == 25 || row == 31) { 
    label.textColor = [UIColor redColor]; 
}else{ 
    label.textColor = [UIColor blackColor]; 
} 
label.text = [_fuglar objectAtIndex:row]; 
return label; 

if (row == 0) { 
    [UIImage imageNamed:@"byssa2"]; 
} else { 
    [_fuglar objectAtIndex:row]; 
} 

} 

- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component 
{ 
//Create UIImage objects 



UIImage * byssa2Image = [UIImage imageNamed:@"byssa2.jpg"]; 
UIImage * hrafnImage = [UIImage imageNamed:@"hrafn.jpg"]; 
UIImage * svartbakurImage = [UIImage imageNamed:@"Svartbakur.jpg"]; 
UIImage * silfurmafurImage = [UIImage imageNamed:@"Silfurmafur.jpg"]; 
UIImage * silamafurImage = [UIImage imageNamed:@"Silamafur.jpg"]; 
UIImage * gragaesImage = [UIImage imageNamed:@"Gragaes.jpg"]; 
UIImage * heidargaesImage = [UIImage imageNamed:@"Heidagaes.jpg"]; 
UIImage * fyllImage = [UIImage imageNamed:@"fyll.jpg"]; 
UIImage * toppskarfurImage = [UIImage imageNamed:@"Dilaskarfur1.jpg"]; 
UIImage * dilaskarfurImage = [UIImage imageNamed:@"Toppskarfur.jpg"]; 
UIImage * helsingiImage = [UIImage imageNamed:@"Helsingi.jpg"]; 
UIImage * stokkondImage = [UIImage imageNamed:@"Stokkond.jpg"]; 
UIImage * urtondImage = [UIImage imageNamed:@"Urtond.jpg"]; 
UIImage * raudhofdaondImage = [UIImage imageNamed:@"Raudhofdaond.jpg"]; 
UIImage * duggondImage = [UIImage imageNamed:@"Duggond.jpg"]; 
UIImage * skufondImage = [UIImage imageNamed:@"Skufond.jpg"]; 
UIImage * havellaImage = [UIImage imageNamed:@"Havella.jpg"]; 
UIImage * toppondImage = [UIImage imageNamed:@"Toppond.jpg"]; 
UIImage * hvitmafurImage = [UIImage imageNamed:@"Hvitmafur.jpg"]; 
UIImage * hettumafurImage = [UIImage imageNamed:@"Hettumafur.jpg"]; 
UIImage * ritaImage = [UIImage imageNamed:@"Rita.jpg"]; 
UIImage * alkaImage = [UIImage imageNamed:@"Alka.jpg"]; 
UIImage * langviaImage = [UIImage imageNamed:@"Langvia1.jpg"]; 
UIImage * stuttnefjaImage = [UIImage imageNamed:@"Stuttnefja.jpg"]; 
UIImage * teistaImage = [UIImage imageNamed:@"Teista1.jpg"]; 
UIImage * lundiImage = [UIImage imageNamed:@"Lundi.jpg"]; 
UIImage * rjupaImage = [UIImage imageNamed:@"Rjupa1.jpg"]; 
UIImage * kjoiImage = [UIImage imageNamed:@"Kjoi.jpg"]; 



switch (row) { 
     break; 
    case 0: 
     fuglarImage.image = byssa2Image; 
     break; 
    case 1: 
     fuglarImage.image = hrafnImage; 
     break; 
    case 2: 
     fuglarImage.image = svartbakurImage; 
     break; 
    case 3: 
     fuglarImage.image = silfurmafurImage; 
     break; 
    case 4: 
     fuglarImage.image = silamafurImage; 
     break; 
    case 6: 
     fuglarImage.image = gragaesImage; 
     break; 
    case 7: 
     fuglarImage.image = heidargaesImage; 
     break; 
    case 9: 
     fuglarImage.image = fyllImage; 
     break; 
    case 10: 
     fuglarImage.image = toppskarfurImage; 
     break; 
    case 11: 
     fuglarImage.image = dilaskarfurImage; 
     break; 
    case 12: 
     fuglarImage.image = helsingiImage; 
     break; 
    case 13: 
     fuglarImage.image = stokkondImage; 
     break; 
    case 14: 
     fuglarImage.image = urtondImage; 
     break; 
    case 15: 
     fuglarImage.image = raudhofdaondImage; 
     break; 
    case 16: 
     fuglarImage.image = duggondImage; 
     break; 
    case 17: 
     fuglarImage.image = skufondImage; 
     break; 
    case 18: 
     fuglarImage.image = havellaImage; 
     break; 
    case 19: 
     fuglarImage.image = toppondImage; 
     break; 
    case 20: 
     fuglarImage.image = hvitmafurImage; 
     break; 
    case 21: 
     fuglarImage.image = hettumafurImage; 
     break; 
    case 22: 
     fuglarImage.image = ritaImage; 
     break; 
    case 24: 
     fuglarImage.image = kjoiImage; 
     break; 
    case 26: 
     fuglarImage.image = alkaImage; 
     break; 
    case 27: 
     fuglarImage.image = langviaImage; 
     break; 
    case 28: 
     fuglarImage.image = stuttnefjaImage; 
     break; 
    case 29: 
     fuglarImage.image = teistaImage; 
     break; 
    case 30: 
     fuglarImage.image = lundiImage; 
     break; 
    case 32: 
     fuglarImage.image = rjupaImage; 
     break; 

    default: 
     break; 
} 
} 

Answer 1

Zuerst denke ich, was Sie brauchen eine Tippgeste auf dem Picker selbst ist, dann, wenn es angezapft ist, was entscheiden kann, zu tun .. pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component nicht ganz die Art und Weise arbeiten, die Sie es zu Recht wollen?

Zunächst einmal, wo Sie Ihre Kommissionierer erstellen/Ihre Kommissionierer Eigenschaft

So etwas wie dieses Danach

-(UIPickerView *)pickerView 
{ 
    if (!_pickerView) { 

     _pickerView = [[UIPickerView alloc]initWithFrame:CGRectZero]; 
     _pickerView.dataSource = self; 
     _pickerView.delegate = self; 

     UITapGestureRecognizer *tapGestureRecogniser = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(pickerTapped:)]; 
     tapGestureRecogniser.cancelsTouchesInView = NO; 
     tapGestureRecogniser.delegate = self; 
     [_pickerView addGestureRecognizer:tapGestureRecogniser]; 
    } 

    return _pickerView; 
} 

erstellen Sie benötigen ein wenig hinzuzufügen sicher Geste unser Leitungs zu machen nicht stört mit unserer Kommissionierer Bewegung brauchen wir UIGestureRecognizerDelegate wie so

@interface MYPickerViewController() <UIPickerViewDataSource, UIPickerViewDelegate, UIGestureRecognizerDelegate> 

und auch

hinzufügen

-(BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer { 

    return YES; 
} 

Jetzt ist das aus dem Weg ... wir können mit dem Pflücker umgehen. Ich habe CELL_HEIGHT verwendet, um die Höhe der Picker-Zellen darstellen

-(void)pickerTapped:(UITapGestureRecognizer *)tapGestureRecogniser 
{ 
    NSLog(@"pickerTapped"); 

    CGPoint touchPoint = [tapGestureRecogniser locationInView:[self picker]]; 

     if (touchPoint.y < ([self picker].frame.size.height + CELL_HEIGHT)/2 && touchPoint.y > ([self picker].frame.size.height/2) - (CELL_HEIGHT/2)) // this makes sure the tap was actually on the selected cell 
    { 
     NSLog(@"Met tap criteria"); 

     NSInteger row = [self.pickerView selectedRowInComponent:0]; 
     [self presentInfoForRow:row]; 
    } 
} 

Schließlich wird das Bit Sie für Sie gefragt, eine Warnung will die Tap-Geste für Ihre Imageview Pop-up

-(void)presentInfoForRow:(NSInteger)row 
{ 

    NSString *title = @""; 
    NSString *message = @""; 

    // change your message depending on the row selected. 
    // you used a switch above, but you'd be much better off creating a bird object, putting .image .title and .message fields in and sticking them in an array 

    UIAlertController *alertController = [UIAlertController alertControllerWithTitle:title message:message preferredStyle:UIAlertControllerStyleAlert]; 

     UIAlertAction *doneAction = [UIAlertAction actionWithTitle:NSLocalizedString(@"Done", @"") style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) { 

     }]; 

     [alertController addAction:doneAction]; 

    [self.navigationController presentViewController:alertController animated:YES completion:nil]; 

}