How to prevent initial white flash when showing a UIWebView?

Question

I use a UIWebView to show an \"About\" screen by displaying a bundled HTML file. My app\'s view hierarchy is: UITabBarController / UIViewCont

Answer 1

Fixed by adding in webView settings:

myWebView.setBackgroundColor(0x00000000);

Answer 2

I also encountered the same problem , the solution I found is as follows.

-(void)viewDidLoad {
  [super viewDidLoad];

  [_webView setOpaque:NO];
  _webView.backgroundColor = [UIColor clearColor];
  self.webView.hidden = YES;
}

-(void)webViewDidFinishLoad:(UIWebView *)webView {

 //...........................

 self.webView.hidden = NO;
}

Answer 3

Swift:

webView.isOpaque = false
webView.backgroundColor = UIColor.clear

Objective-C:

webView.opaque = NO;
webView.backgroundColor = [UIColor clearColor];

Answer 4

// load index.html

NSURL *url = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"index" ofType:@"html" inDirectory:@"www"]];
self.webview.delegate = self;

self.webview.alpha = 0; // flicker fix 

[self.webview loadRequest:[NSURLRequest requestWithURL:url]];

Add this to delegate after loading

// flicker fix

- (void)webViewDidFinishLoad:(UIWebView *)webView  
{
    [UIView beginAnimations:nil context:nil];

    [UIView setAnimationDuration:0.30];

    self.webview.alpha = 1;

    [UIView commitAnimations];

}