XZ_iOS之使用webView实现开机动画效果

效果图如下：

实现代码

- (void)viewDidLoad {

    [superviewDidLoad];
    self.view.backgroundColor= [UIColorwhiteColor];
    // 初始化UIWebView对象，添加GIF文件
    UIWebView *webView = [[UIWebViewalloc]initWithFrame:CGRectMake(0,250,self.view.frame.size.width,200)];
    [self.viewaddSubview:webView];
    NSString *filePath = [[NSBundlemainBundle]pathForResource:@"duck"ofType:@"gif"];
    NSData *gif = [NSDatadataWithContentsOfFile:filePath];
    [webView loadData:gifMIMEType:@"image/gif"textEncodingName:@""baseURL:[NSURLURLWithString:filePath]];
    webView.userInteractionEnabled=NO;
    // 创建一个灰色的蒙版，提升效果
    UIView *filter = [[UIViewalloc]initWithFrame:self.view.bounds];
    filter.backgroundColor= [UIColorblackColor];
    filter.alpha=0.3;
    [self.viewaddSubview:filter];
   

}

 注意：将gif图片放在跟controller平级的文件夹中，不要放在Assets.xcassets中

 

在AppDelegate中切换控制器：ViewController有webView的控制器，XZMainViewController首页控制器

self.window = [[UIWindowalloc]initWithFrame:[UIScreenmainScreen].bounds];

    [self.windowmakeKeyAndVisible];

    self.window.rootViewController = [[ViewControlleralloc]init];

    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(5.0 * NSEC_PER_SEC)),dispatch_get_main_queue(), ^{

         self.window.rootViewController = [[UINavigationControlleralloc]initWithRootViewController:[[XZMainViewControlleralloc]init]];

    });