Question

我正在使用https://github.com/cwRichardKim/TinderSimpleSwipeCards。我在viewController中创建了一个数组，其中的数据来自JSON。我希望只有那么多张卡才能在我的JSON数组中创建数据。请帮助我从过去3天开始这样做但尚未成功。

这是我的视图控制器中的数组

  [self.arrAllCards addObject:model];
                     //[self.arrExamplecards addObject:model.senderImage];

                     NSLog(@"%@",_arrAllCards);

                     //_draggableVC.allCards = _arrAllCards;


                     //[_draggableVC.exampleCardLabels isEqualToArray:_arrInitationsMainContainer];
                     if ([_arrAllCards count] >0) {

                         DraggableViewBackground *draggableBackground = [[DraggableViewBackground alloc]initWithFrame:self.invitationViewContainer.frame];


                        draggableBackground.exampleCardLabels = [NSMutableArray arrayWithArray:_arrAllCards];
                         draggableBackground.alpha = 0; //opti
                         [self.invitationViewContainer addSubview:draggableBackground];

                         [draggableBackground setNeedsDisplay];
                     }

和DraggableViewBackground是由cwRichardKim提供的View类

   - (id)initWithFrame:(CGRect)frame 
{

self = [super initWithFrame:frame];
if (self) {
    [super layoutSubviews];
    [self setupView];

    exampleCardLabels =  [NSArray new];  //%%% placeholder for card-specific information
    loadedCards = [[NSMutableArray alloc] init];
    allCards = [[NSMutableArray alloc] init];
    cardsLoadedIndex = 0;
    [self loadCards];
}
return self;
     }

    //%%% sets up the extra buttons on the screen



 // to get rid of it (eg: if you are building cards from data from the internet)
      -(DraggableView *)createDraggableViewWithDataAtIndex:(NSInteger)index
      {

     //MGInvitationModel *model = self.exampleCardLabels[index];

        DraggableView *draggableView = [[DraggableView  alloc]initWithFrame:CGRectMake(0, -50, CARD_WIDTH,  CARD_HEIGHT)];//[[DraggableView  alloc]initWithFrame:CGRectMake((self.bounds.size.width)/2, (self.bounds.size.height)/2, CARD_WIDTH, CARD_HEIGHT)]; //[[DraggableView  alloc]initWithFrame:CGRectMake(0, -40, CARD_WIDTH, CARD_HEIGHT)];
     //draggableView.information.text = [exampleCardLabels objectAtIndex:index];        //%%% placeholder for card-specific information



     draggableView.delegate = self;
     draggableView.layer.cornerRadius = 10.0f;


    nameLabel = [[UILabel alloc]initWithFrame:CGRectMake(30, 280, 150, 50)];
     nameLabel.font = [UIFont fontWithName:@"Arial" size:12.0f];
     nameLabel.text = @"NIVESH";
     [nameLabel setTextAlignment:NSTextAlignmentLeft];
      nameLabel.textColor = [UIColor blackColor];

[draggableView addSubview:nameLabel];
return draggableView;



}




     //%%% loads all the cards and puts the first x in the "loaded cards" array
     -(void)loadCards
       {




if([exampleCardLabels count] > 0) {
    NSInteger numLoadedCardsCap =(([exampleCardLabels count] > MAX_BUFFER_SIZE)?MAX_BUFFER_SIZE:[exampleCardLabels count]);
    //%%% if the buffer size is greater than the data size, there will be an array error, so this makes sure that doesn't happen



    //%%% loops through the exampleCardsLabels array to create a card for each label.  This should be customized by removing "exampleCardLabels" with your own array of data
    for (int i = 0; i<[exampleCardLabels count]; i++) {
        DraggableView* newCard = [self createDraggableViewWithDataAtIndex:i];
        [allCards addObject:newCard];

        if (i<numLoadedCardsCap) {
            //%%% adds a small number of cards to be loaded
            [loadedCards addObject:newCard];
        }
    }



    //%%% displays the small number of loaded cards dictated by MAX_BUFFER_SIZE so that not all the cards
    // are showing at once and clogging a ton of data
    for (int i = 0; i<[loadedCards count]; i++) {
        if (i>0) {
            [self insertSubview:[loadedCards objectAtIndex:i] belowSubview:[loadedCards objectAtIndex:i-1]];
        } else {
            [self addSubview:[loadedCards objectAtIndex:i]];
        }
        cardsLoadedIndex++; //%%% we loaded a card into loaded cards, so we have to increment
    }
}else if ([exampleCardLabels count] == 0){

    [self removeFromSuperview];
    //[DraggableViewBackground.self removeFromSuperview];
    }
     }

     #warning include own action here!
     //%%% action called when the card goes to the left.
     // This should be customized with your own action
    -(void)cardSwipedLeft:(UIView *)card;
   {
//do whatever you want with the card that was swiped
//    DraggableView *c = (DraggableView *)card;

    [loadedCards removeObjectAtIndex:0]; //%%% card was swiped, so it's no       longer a "loaded card"

      if (cardsLoadedIndex < [allCards count]) { //%%% if we haven't reached the end of all cards, put another into the loaded cards
    [loadedCards addObject:[allCards objectAtIndex:cardsLoadedIndex]];
    cardsLoadedIndex++;//%%% loaded a card, so have to increment count
    [self insertSubview:[loadedCards objectAtIndex:(MAX_BUFFER_SIZE-1)]  belowSubview:[loadedCards objectAtIndex:(MAX_BUFFER_SIZE-2)]];
}
   }

      #warning include own action here!
   //%%% action called when the card goes to the right.
    // This should be customized with your own action
    -(void)cardSwipedRight:(UIView *)card
     {
//do whatever you want with the card that was swiped
//    DraggableView *c = (DraggableView *)card;

    [loadedCards removeObjectAtIndex:0]; //%%% card was swiped, so it's no  longer a "loaded card"

   if (cardsLoadedIndex < [allCards count]) { //%%% if we haven't reached the end of all cards, put another into the loaded cards
    [loadedCards addObject:[allCards objectAtIndex:cardsLoadedIndex]];
    cardsLoadedIndex++;//%%% loaded a card, so have to increment count
    [self insertSubview:[loadedCards objectAtIndex:(MAX_BUFFER_SIZE-1)] belowSubview:[loadedCards objectAtIndex:(MAX_BUFFER_SIZE-2)]];
}

  }

   //%%% when you hit the right button, this is called and substitutes the swipe
    -(void)swipeRight
      {
DraggableView *dragView = [loadedCards firstObject];
dragView.overlayView.mode = GGOverlayViewModeRight;
[UIView animateWithDuration:0.2 animations:^{
    dragView.overlayView.alpha = 1;
}];
[dragView rightClickAction];
   }

  //%%% when you hit the left button, this is called and substitutes the swipe
   -(void)swipeLeft
  {
DraggableView *dragView = [loadedCards firstObject];
dragView.overlayView.mode = GGOverlayViewModeLeft;
[UIView animateWithDuration:0.2 animations:^{
    dragView.overlayView.alpha = 1;
}];
[dragView leftClickAction];
  }

    -(void)swipeIgnore
 {
DraggableView *dragView = [loadedCards firstObject];
dragView.overlayView.mode = GGOverlayViewModeLeft;
[UIView animateWithDuration:0.2 animations:^{
    dragView.overlayView.alpha = 1;
}];
[dragView leftClickAction];


   }

   /*
    // Only override drawRect: if you perform custom drawing.
    // An empty implementation adversely affects performance during animation.
   - (void)drawRect:(CGRect)rect
   {
  // Drawing code
   }
   */

@end

Answer 1

你能改变你的 - （void）loadCards方法 -

-(void)loadCards :(NSArray*) array {
   exampleCardLabels = array;

   //put here your existing code.
   //...
}

还在DraggableViewBackground.h文件中添加-(void)loadCards :(NSArray*) array;

并从[self loadCards];方法

评论- (id)initWithFrame:(CGRect)frame

然后改变这个方法 -

if ([_arrAllCards count] >0) {

                         DraggableViewBackground *draggableBackground = [[DraggableViewBackground alloc]initWithFrame:self.invitationViewContainer.frame];

                         [draggableBackground loadCards:_arrAllCards];
                         draggableBackground.alpha = 0; //opti
                         [self.invitationViewContainer addSubview:draggableBackground];

                         //[draggableBackground setNeedsDisplay];
                     }

Answer 2

更改

exampleCardLabels = [NSArray new]; //%%% placeholder for card-specific information

到

MyClass *myClass = [[MyClass alloc]init];
NSMutableArray *array = [myClass.arrAllCards mutableCopy];
exampleCardLabels = array

注意：MyClass引用您命名为视图控制器的任何内容。

tinderSwipeCards数组填充

2 个答案: