Xcode iPhone SDK - 在应用程序启动时显示 gif 图像
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Xcode iPhone SDK - Show gif image on app Launch
提问by Aleksander Azizi
I currently have a mp4 video converted from a gif playing at app launch, but using a video stops playing music and has problems with airplay devices connected.
我目前有一个从应用程序启动时播放的 gif 转换而来的 mp4 视频，但使用视频会停止播放音乐并且连接的播放设备出现问题。
Anyways what i really want is showing my gif on app launch. But i can't seem to get the gif to "play" it only shows one frame, how do i make it play the whole gif ?
无论如何，我真正想要的是在应用程序启动时显示我的 gif。但我似乎无法让 gif“播放”它只显示一帧，我如何让它播放整个 gif？
My current code:
我目前的代码：
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
// Show Animation;
NSURL *url = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"Launch" ofType:@"mp4"]];
LaunchPlayer = [[MPMoviePlayerViewController alloc]
initWithContentURL:url];
LaunchPlayer.view.frame = self.view.bounds;
LaunchPlayer.moviePlayer.movieSourceType = MPMovieSourceTypeFile;
LaunchPlayer.moviePlayer.controlStyle = MPMovieControlStyleNone;
LaunchPlayer.view.tag = 1;
[self.view addSubview:LaunchPlayer.view];
[LaunchPlayer.moviePlayer play];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(LaunchFinish)
name:@"MPMoviePlayerPlaybackDidFinishNotification"
object:nil];
}
回答by Mick MacCallum
Although I don't see how the code you posted has anything to do with using a .gif, you its sticking to the first frame because iOS will not run an animated .gif. However, you can export each frame of your animation as a separate image and animate them like this.
虽然我看不出您发布的代码与使用 .gif 有什么关系，但您仍然坚持使用第一帧，因为 iOS 不会运行动画 .gif。但是，您可以将动画的每一帧导出为单独的图像，并像这样为它们设置动画。
-(void) viewDidLoad
{
imageView.animationImages = [NSArray arrayWithObjects:
[UIImage imageNamed:@"myImageFrame1.gif"],
[UIImage imageNamed:@"myImageFrame2.gif"],
[UIImage imageNamed:@"myImageFrame3.gif"],
[UIImage imageNamed:@"myImageFrame4.gif"], nil];
imageView.animationDuration = 2.0;
imageView.animationRepeatCount = 0;
[imageView startAnimating];
}
回答by Matosha
In my little example here. i used a UIWEBVIEW called webView and had spinning-loader.gif added as a resource. The image can me put anywhere in the project as long as its added. This showed the gif as well as made it animate. Hope this helps.
在我这里的小例子中。我使用了一个名为 webView 的 UIWEBVIEW，并将 spin-loader.gif 添加为资源。只要添加了图像，我就可以将其放在项目中的任何位置。这显示了 gif 并使其具有动画效果。希望这可以帮助。
NSString *pathImg = [[NSBundle mainBundle] pathForResource:@"spinning-loader" ofType:@"gif"];
NSString* webViewContent = [NSString stringWithFormat:
@"<html><body><img style='width:85;height:85;' src=\"file://%@\" /></body></html>", pathImg];
[webView loadHTMLString:webViewContent baseURL:nil];
webView.scrollView.bounces = NO;
webView.scrollView.scrollEnabled = NO;
webView.opaque=FALSE;
[webView setBackgroundColor:[UIColor clearColor]];
