Add UIButton in a UIWebView

Question

I have a UIWebView which is already filled by my request (loadRequest).

I would like to add a UIButton in it. It\'s easy to write this simple code :

Answer 1

Continuing with axiixc's comment, here is some code that you might use to place a button at the bottom of the webview. By putting the positioning code in layout subviews you can handle rotation properly.

- (void)webViewDidFinishLoad:(UIWebView *)webview{  
    if (!_button){
        UIButton *button = [UIButton buttonWithType:UIButtonTypeSystem];
        [button setTitle:@"Move All Blue Cards to Known" forState:UIControlStateNormal];
        [button setBackgroundImage:[UIImage imageNamed:@"signin-button-blue-color"] forState:UIControlStateNormal];
        [button setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
        button.titleLabel.font = [UIFont boldSystemFontOfSize:16.0];
        [_webview.scrollView addSubview:button];
        _button = button;
    }

    [self setNeedsLayout];
    [self layoutIfNeeded];

}


- (void)layoutSubviews{
    [super layoutSubviews];

    float y = 0;
    CGRect originalRect = _webview.frame;
    _webview.frame = CGRectMake(0, 0, originalRect.size.width, 1); // Trick the webview into giving the right size for content
    CGSize contentSize = _webview.scrollView.contentSize;
    _webview.frame = originalRect;
    if (contentSize.height < _webview.frame.size.height){ // This keeps the button at the bottom of the webview, or at the bottom of the content, as needed.
        y = _webview.frame.size.height - 64; // 44 tall + 20 offset from the bottom
    } else {
        y = contentSize.height + 20;
    }

    _button.frame = CGRectMake(20, y, self.frame.size.width-40, 44); // 40/2 = 20 px on each side
    contentSize.height = CGRectGetMaxY(_button.frame)+20;
    _webview.scrollView.contentSize = contentSize;    
}