您可以通过使用容器视图来按住按钮来使其工作。
-(void)viewDidAppear:(BOOL)animated
{
_viewContents = [model getRequestedView]; //this retrieves an array of UIButtons(24 of them) whose frames and background colors have already been initialized to fit within the TileView.
for(int i = 0; i < [_viewContents count]; i++){
UIView *container = [[UIView alloc] initWithFrame:[[_viewContents objectAtIndex:screenViewIndex] frame]];
container.tag = i;
UIButton *frontOfCardView = [[UIButton alloc] initWithFrame:container.bounds];
frontOfCardView.backgroundColor = [UIColor colorWithPatternImage:_frontOfCardImage];
frontOfCardView.tag = i;
[container addSubview:frontOfCardView];
[frontOfCardView addTarget:self action:@selector(frontOfCardPushed:) forControlEvents:UIControlEventTouchUpInside];
[tileView addSubview:container];
}
}
-(IBAction)frontOfCardPushed:(UIButton *)sender
{
UIView *container = [tileView viewWithTag:sender.tag];
UIView *viewToShow = [_viewContents objectAtIndex:index];
viewToShow.frame = sender.frame;
[UIView transitionWithView:container
duration:0.5
options:UIViewAnimationOptionTransitionFlipFromRight
animations:^{
[sender removeFromSuperView];
[container addSubview:viewToShow];
}
completion:nil];
}
我还没有测试过,但应该可以。无论如何,这不是很干净/漂亮的代码。但是,我知道这只是为了学习。
如果仍然不起作用,请告诉我。
编辑:
我做了一个简单的项目,以单个视图控制器为例。我认为你记录所有视图/按钮的方式是无用的。在这种情况下,模型只是一种背景色,您所想做的就是显示/隐藏它,所以一旦您将颜色分配给按钮,它所需要知道的就是切换状态,因此您甚至不需要标记。(在其他情况下,控制器需要识别接收到事件的按钮,以便询问模型需要什么内容)
#import "ViewController.h"
@interface ViewController ()
@property (nonatomic, strong) NSArray *colors;
@property (nonatomic, strong) UIView *tileView;
@end
@implementation ViewController
#pragma mark -
#pragma Getters and setters
// I'm assuming the tileView is just a simple view to wrap all the buttons
// PS : propertys should always start with a lowercase letter
-(UIView *)tileView
{
if (!_tileView) {
_tileView = [[UIView alloc] initWithFrame:self.view.bounds];
_tileView.backgroundColor = [UIColor greenColor];
}
return _tileView;
}
// The model: just an array of colors, you can generate it or use other complicated stuff
-(NSArray *)colors
{
if (!_colors) {
_colors = @[[UIColor blackColor], [UIColor redColor], [UIColor grayColor], [UIColor yellowColor],
[UIColor whiteColor], [UIColor blueColor], [UIColor orangeColor], [UIColor darkGrayColor],
[UIColor lightGrayColor], [UIColor cyanColor], [UIColor brownColor], [UIColor magentaColor],
[UIColor blackColor], [UIColor redColor], [UIColor grayColor], [UIColor yellowColor],
[UIColor whiteColor], [UIColor blueColor], [UIColor orangeColor], [UIColor darkGrayColor],
[UIColor lightGrayColor], [UIColor cyanColor], [UIColor brownColor], [UIColor magentaColor]];
}
return _colors;
}
#pragma mark -
#pragma mark Helper methods
#define ROWS 6
#define COLUMNS 4
#define CARD_HEIGHT 60.0f
#define CARD_WIDTH 40.0f
// Gets the width that each card can use based on the chose number of columns
-(CGFloat)horizontalStep
{
return self.tileView.frame.size.width / COLUMNS;
}
// Gets the height that each card can use based on the chose number of columns
-(CGFloat)verticalStep
{
return self.tileView.frame.size.height / ROWS;
}
// Calculates the center for the card frame (return (0,0) if the index is out of bounds)
-(CGPoint)centerForCardAtIndex:(NSUInteger)index
{
CGFloat x = 0.0f, y = 0.0f;
if (index < [self.colors count]) {
x = [self horizontalStep] * 0.5f + (index % COLUMNS) * [self horizontalStep];
y = [self verticalStep] * 0.5f + (index / COLUMNS) * [self verticalStep];
}
return CGPointMake(x, y);
}
// Gets the frame for the card at index
-(CGRect)frameForCardAtIndex:(NSUInteger)index
{
CGPoint center = [self centerForCardAtIndex:index];
CGPoint origin = CGPointMake(center.x - CARD_WIDTH * 0.5f, center.y - CARD_HEIGHT * 0.5f);
return CGRectMake(origin.x, origin.y, CARD_WIDTH, CARD_HEIGHT);
}
-(void)layoutCards
{
// Add tileView to the controller's view
[self.view addSubview:self.tileView];
// Create the card buttons and add them to the tile view
for (int i = 0; i < [self.colors count]; i++) {
UIButton *card = [UIButton buttonWithType:UIButtonTypeCustom];
card.frame = [self frameForCardAtIndex:i];
// The only use of the model IN THIS CASE
card.backgroundColor = self.colors[i];
[card setImage:[UIImage imageNamed:@"back_of_tile.png"]
forState:UIControlStateNormal];
[card addTarget:self
action:@selector(cardPressed:)
forControlEvents:UIControlEventTouchUpInside];
[self.tileView addSubview:card];
}
}
-(void)cardPressed:(UIButton *)card
{
[UIView transitionWithView:card
duration:0.5
options:UIViewAnimationOptionTransitionFlipFromRight
animations:^{
card.selected = !card.selected;
if (!card.selected) {
[card setImage:[UIImage imageNamed:@"back_of_tile.png"]
forState:UIControlStateNormal];
} else {
[card setImage:nil
forState:UIControlStateNormal];
}
}
completion:nil];
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
[self layoutCards];
}
