Variable set to undefined from webViewDidStartLoad to webViewDidFinishLoad

Question

I have a UIWebView and the UIWebViewDelegate.

At the method webViewDidStartLoad I define a variable bs with another class burningSoft

-(void)webViewDidStartLoad:(UIWebView *)webView
{
    NSLog(@"webViewDidStartLoad");
    NSLog(@"burningSoft 1: %@", self.context[@"burningSoft"]);
    [self initJS];
    NSLog(@"burningSoft 2: %@", self.context[@"burningSoft"]);
    [self setContext:[[self webView] valueForKeyPath:@"documentView.webView.mainFrame.javaScriptContext"]];
    if(self.context[@"burningSoft"].isUndefined) {
        self.context[@"burningSoft"] = [self bs];
    }
    NSLog(@"burningSoft 3: %@", self.context[@"burningSoft"]);
}

The method initJS looks like

-(void)initJS
{
    NSLog(@"initJS");
    [self setBs:[[BurningSoft alloc] init]];
    [[self bs] setMain:self];
    if(self.context[@"burningSoft"].isUndefined) {
        self.context[@"burningSoft"] = [self bs];
    }
}

and webViewDidFinishLoad looks similar like webViewDidStartLoad

-(void)webViewDidFinishLoad:(UIWebView *)webView
{
    NSLog(@"webViewDidFinishLoad");
    NSLog(@"burningSoft 4: %@", self.context[@"burningSoft"]);
    if(self.context[@"burningSoft"].isUndefined)
    {
        NSLog(@"UNDEFINED!!!");
        NSLog(@"[self bs] 1: %@", [self bs]);
        NSLog(@"burningSoft 5: %@", self.context[@"burningSoft"]);
        self.context[@"burningSoft"] = [self bs];
        NSLog(@"burningSoft 6: %@", self.context[@"burningSoft"]);
        NSLog(@"[self bs] 2: %@", [self bs]);
    }
    NSLog(@"burningSoft 7: %@", self.context[@"burningSoft"]);
}

So my first page did some logs like this

2016-08-26 13:42:57.054 burningSoft[2325:342056] webViewDidStartLoad
2016-08-26 13:42:57.055 burningSoft[2325:342056] burningSoft 1: (null)
2016-08-26 13:42:57.055 burningSoft[2325:342056] initJS
2016-08-26 13:42:57.056 burningSoft[2325:342056] burningSoft 2: (null)
2016-08-26 13:42:57.060 burningSoft[2325:342056] burningSoft 3: < burningSoft: 0x7fc7a3616870>
2016-08-26 13:42:57.300 burningSoft[2325:342056] webViewDidFinishLoad
2016-08-26 13:42:57.300 burningSoft[2325:342056] burningSoft 4: < burningSoft: 0x7fc7a3616870>
2016-08-26 13:42:57.300 burningSoft[2325:342056] burningSoft 7: < burningSoft: 0x7fc7a3616870>

and that's correct. If I entered some login data and another site is loaded I get logs like

2016-08-26 13:43:12.269 burningSoft[2325:342056] webViewDidStartLoad
2016-08-26 13:43:12.269 burningSoft[2325:342056] burningSoft 1: < burningSoft: 0x7fc7a3616870>
2016-08-26 13:43:12.270 burningSoft[2325:342056] initJS
2016-08-26 13:43:12.270 burningSoft[2325:342056] burningSoft 2: < burningSoft: 0x7fc7a3616870>
2016-08-26 13:43:12.270 burningSoft[2325:342056] burningSoft 3: < burningSoft: 0x7fc7a3616870>
2016-08-26 13:43:12.444 burningSoft[2325:342056] webViewDidFinishLoad
2016-08-26 13:43:12.445 burningSoft[2325:342056] burningSoft 4: undefined
2016-08-26 13:43:12.445 burningSoft[2325:342056] UNDEFINED!!!
2016-08-26 13:43:12.445 burningSoft[2325:342056] [self bs] 1: < burningSoft: 0x7fc7a5827230>
2016-08-26 13:43:12.445 burningSoft[2325:342056] burningSoft 5: undefined
2016-08-26 13:43:12.445 burningSoft[2325:342056] burningSoft 6: undefined
2016-08-26 13:43:12.445 burningSoft[2325:342056] [self bs] 2: < burningSoft: 0x7fc7a5827230>
2016-08-26 13:43:12.446 burningSoft[2325:342056] burningSoft 7: undefined

Everything is correct till the log 2016-08-26 13:43:12.445 burningSoft[2325:342056] burningSoft 5: undefined. My variable bs has the correct content and I set this content in this method to self.context[@"burningSoft"] but the log in the next line told me that there is nothing.

Did someone know why my variable self.context[@"burningSoft"] set to undefined between the methods webViewDidStartLoad and webViewDidFinishLoad and will not set?

Can you also log `self` and `self.context` to see whether the change is in those, as opposed to just the @"burningSoft" element? — Phillip Mills, Aug 26 '16 at 13:10
@PhillipMills I solved it ... I only had to add `[self setContext:[[self webView] valueForKeyPath:@"documentView.webView.mainFrame.javaScriptContext"]];` into `webViewDidFinishLoad` — Premox, Aug 30 '16 at 07:19

Variable set to undefined from webViewDidStartLoad to webViewDidFinishLoad

0 Answers0