在 UIWebview 中添加 gif 视频文件

Question

我在 Objective-C 中的UIWbeview 中添加了一个 GIF 图像。问题是图像大小不适合屏幕，并且 gif 视频上方的内容未显示。如何调整图像大小并显示其上方的按钮。

我的代码是：

- (void)viewDidLoad {
    [super viewDidLoad];
    
    NSString *filePath = [[NSBundle mainBundle] pathForResource:@"back" ofType:@"gif"];
    NSData *gif = [NSData dataWithContentsOfFile:filePath];
    
    UIWebView *webViewBG = [[UIWebView alloc] initWithFrame:self.view.frame];
    [webViewBG loadData:gif MIMEType:@"gif" textEncodingName:NULL baseURL:NULL];
    webViewBG.userInteractionEnabled = NO;
    webViewBG.scalesPageToFit=YES;
    [self.view addSubview:webViewBG];
    
    // Do any additional setup after loading the view.
}

Answer 1

您可以将代码移至viewDidAppear

 - (void)viewDidAppear:(BOOL)animated  {

    [super viewDidAppear:animated];

    NSString *filePath = [[NSBundle mainBundle] pathForResource:@"back" ofType:@"gif"];
    NSData *gif = [NSData dataWithContentsOfFile:filePath];

    UIWebView *webViewBG = [[UIWebView alloc] initWithFrame:self.view.frame];
    [webViewBG loadData:gif MIMEType:@"image/gif" textEncodingName:@"UTF-8" baseURL:NULL];
    webViewBG.userInteractionEnabled = NO;
    webViewBG.scalesPageToFit=YES;
    [self.view addSubview:webViewBG];
}