使用 NStimer 使用默认图像设置图像动画

Question

如何集成两张图片，其中一张作为默认图片，另一张在应用启动时作为动画图片。即使视图再次加载，动画图片也不应该再次出现。它应该只在应用启动时出现，如 default.png 图像。 .想法是获取两个默认图像..我该怎么做？..

这是我的代码...

@interface ViewController ()<UIActionSheetDelegate>

@property (nonatomic, assign) BOOL useButtons;

@end

@implementation ViewController

 @synthesize carousel,Chaintop;

#pragma mark -
#pragma mark View lifecycle

  - (void)viewDidLoad
 {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
carousel.type = iCarouselTypeInvertedWheel              ;

CGRect ChaintopFrame = Chaintop.frame;
ChaintopFrame.origin.y = self.view.bounds.size.height;    

[UIView animateWithDuration:3
                      delay:1.0
                    options: UIViewAnimationCurveEaseOut
                 animations:^{
                  Chaintop.frame = ChaintopFrame;
                     //Chainbottom.frame = ChainbottomFrame;
                 } 
                 completion:^(BOOL finished){
                     NSLog(@"Done!");
                 }];
   [self.view addSubview: Chaintop];
   }


 - (void)viewDidUnload
 {
[super viewDidUnload];
 // Release any retained subviews of the main view.
}

 - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}

    - (NSUInteger)numberOfItemsInCarousel:(iCarousel *)carousel
    {
   return NUMBER_OF_ITEMS;
      }

  - (UIView *)carousel:(iCarousel *)carousel viewForItemAtIndex:(NSUInteger)index reusingView:(UIView *)view
  {

   UIImage *buttonImage=[NSArray arrayWithObjects:[UIImage imageNamed:@"Cover_0.png"],
                      [UIImage imageNamed:@"Cover_1.png"],
                      [UIImage imageNamed:@"Cover_2.png"],
                      [UIImage imageNamed:@"Cover_3.png"],
                      [UIImage imageNamed:@"Cover_4.png"],
                      [UIImage imageNamed:@"Cover_5.png"],
                      [UIImage imageNamed:@"Cover_6.png"],
                      [UIImage imageNamed:@"Cover_7.png"],nil];

UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
button.frame = CGRectMake(0, 0, 200.0f, 200.0f);

[button setImage:(UIImage*)[buttonImage objectAtIndex:index] forState:UIControlStateNormal]; 

[button addTarget:self action:@selector(buttonTapped:) forControlEvents:UIControlEventTouchUpInside];
return button;



 }

 -(void)dealloc{
[Chaintop release];

 }



 - (BOOL)carousel:(iCarousel *)_carousel shouldSelectItemAtIndex:(NSInteger)index
   {
if (index == carousel.currentItemIndex)
{
    NSLog(@"Should select current item");
}
else
{
    NSLog(@"Should select item number %i", index);
}
return YES;
  }

  - (void)carousel:(iCarousel *)_carousel didSelectItemAtIndex:(NSInteger)index
  {
if (index == carousel.currentItemIndex)
{
    //note, this will only ever happen if useButtons == NO
    //otherwise the button intercepts the tap event
    NSLog(@"Did select current item");
}
else
{
    NSLog(@"Did select item number %i", index);
}
     }
     @end

Answer 1

在您的APP DELEGATE 中。 像这样的东西应该可以完成这项工作：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {    
    UIImageView *imageView = [[[UIImageView alloc] initWithFrame:self.window.bounds] autorelease];
    UIImage *image = [UIImage imageNamed:@"NAMEOFYOURSPLASHSCREEN.png"];
    imageView.image = image;
    [self.window addSubview:imageView];
    [self.window makeKeyAndVisible];
    [self performSelector:@selector(remove1stSplash:) withObject:imageView afterDelay:5];
    return YES;
}

- (void)remove1stSplash:(UIImageView *)1stView {
    UIImageView *imageView = ...
    [self.window addSubview:imageView];
    [self performSelector:@selector(remove2ndSplash:) withObject:imageView afterDelay:5];
    [1stView removeFromSuperView];
}

- (void)remove2ndSplash:(UIImageView *)2ndView {
    [self.window addSubview:.....
    [2ndView removeFromSuperView];
}

编辑：

示例项目的链接： Two Splash Screen display in iphone