Iphone 完成后从viewDidLoad中删除动画
我有一个动画(一组图像),我把它放在viewDidLoad中,因为我希望它在启动后立即播放。在viewDidLoad中完成动画后,我还将在UIWebView中显示一个我希望保留的webview。动画播放(由于某种原因不是我创建的UIImage),但完成后我无法将其删除。我试着在superview中加入一个计时器并移除动画,但它没有移除,而是退出应用程序并返回主页Iphone 完成后从viewDidLoad中删除动画,iphone,objective-c,ios,animation,Iphone,Objective C,Ios,Animation,我有一个动画(一组图像),我把它放在viewDidLoad中,因为我希望它在启动后立即播放。在viewDidLoad中完成动画后,我还将在UIWebView中显示一个我希望保留的webview。动画播放(由于某种原因不是我创建的UIImage),但完成后我无法将其删除。我试着在superview中加入一个计时器并移除动画,但它没有移除,而是退出应用程序并返回主页 -(void)viewDidLoad { UIImage *first = [UIImage imageNamed:@"pan
-(void)viewDidLoad
{
UIImage *first = [UIImage imageNamed:@"panda1.png"];
animation = [[UIImageView alloc] initWithImage:first];
animation.animationImages = [NSArray arrayWithObjects: first,
[UIImage imageNamed:@"panda2.png"],
[UIImage imageNamed:@"panda3.png"], nil];
animation.animationRepeatCount = 4;
animation.animationDuration = 2;
[animation startAnimating];
[self.view addSubview:animation];
//set timer to remove animation from view
NSTimer *timer;
timer = [NSTimer scheduledTimerWithTimeInterval: 3
target: self
selector: @selector(removeAnimation:)
userInfo: nil
repeats: NO];
//for loading the image at start up
NSString *urlAddress = @"http://projects.seng.uvic.ca/most_recent.php";
NSURL *url = [NSURL URLWithString:urlAddress];
NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];
//load the request in the UIWebView
[webView loadRequest:requestObj];
}
看起来您正在选择的选择器(
removeAnimation:
)和正在显示的方法(method:
)的名称不同
更简单的方法是这样做:
-(void)viewDidLoad
{
UIImage *first = [UIImage imageNamed:@"panda1.png"];
animation = [[UIImageView alloc] initWithImage:first];
animation.animationImages = [NSArray arrayWithObjects: first,
[UIImage imageNamed:@"panda2.png"],
[UIImage imageNamed:@"panda3.png"], nil];
animation.animationRepeatCount = 4;
animation.animationDuration = 2;
[animation startAnimating];
[self.view addSubview:animation];
[self performSelector:@selector(removeAnimation) withObject:nil afterDelay:8.0];
//for loading the image at start up
NSString *urlAddress = @"http://projects.seng.uvic.ca/most_recent.php";
NSURL *url = [NSURL URLWithString:urlAddress];
NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];
//load the request in the UIWebView
[webView loadRequest:requestObj];
}
- (void)removeAnimation
{
[animation removeFromSuperview];
[animation release];
}
您好,我是熊猫。看起来您选择的选择器(
删除动画:
)和您显示的方法(方法:
)的名称不同
更简单的方法是这样做:
-(void)viewDidLoad
{
UIImage *first = [UIImage imageNamed:@"panda1.png"];
animation = [[UIImageView alloc] initWithImage:first];
animation.animationImages = [NSArray arrayWithObjects: first,
[UIImage imageNamed:@"panda2.png"],
[UIImage imageNamed:@"panda3.png"], nil];
animation.animationRepeatCount = 4;
animation.animationDuration = 2;
[animation startAnimating];
[self.view addSubview:animation];
[self performSelector:@selector(removeAnimation) withObject:nil afterDelay:8.0];
//for loading the image at start up
NSString *urlAddress = @"http://projects.seng.uvic.ca/most_recent.php";
NSURL *url = [NSURL URLWithString:urlAddress];
NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];
//load the request in the UIWebView
[webView loadRequest:requestObj];
}
- (void)removeAnimation
{
[animation removeFromSuperview];
[animation release];
}
你好,我是熊猫。我不认为UIImageView在动画停止时提供代理回调 因此,如果您使用以下提问方式: 这也消除了对计时器的需要
最后,viewDidLoad至少被记录为用于设置数据模型和视图的地方,因为它不能保证在您想要设置动画的时候被调用。我会使用“viewWillAppear”或“viewDidAppear”来设置动画。我不认为UIImageView在动画停止时提供代理回调 因此,如果您使用以下提问方式: 这也消除了对计时器的需要
最后,viewDidLoad至少被记录为用于设置数据模型和视图的地方,因为它不能保证在您想要设置动画的时候被调用。我会使用“viewWillAppear”或“viewDidAppear”来制作动画。oops完全没有注意到缺少的函数名(仍然习惯于此mac键盘:()添加函数名修复了我的问题。oops完全没有注意到缺少的函数名(仍然习惯于此mac键盘:()添加函数名修复了我的问题。