use with WKWebvView? about njkwebviewprogress HOT 2 CLOSED

[self.wkWebView addObserver:self forKeyPath:@"estimatedProgress" options:NSKeyValueObservingOptionNew context:nil];

- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context {
    if ([keyPath isEqualToString:@"estimatedProgress"] && object == self.wkWebView) {
        NSLog(@"%f", self.wkWebView.estimatedProgress);
        // estimatedProgress is a value from 0.0 to 1.0
        // Update your UI here accordingly
        [self.{NWebViewProgressView} setProgress:self.wkWebView.estimatedProgress animated:YES];
    }
    else {
        // Make sure to call the superclass's implementation in the else block in case it is also implementing KVO
        [super observeValueForKeyPath:keyPath ofObject:object change:change context:context];
    }
}