paulofierro/wkwebview_disable_magnification.m

## wkwebview_disable_magnification.m
// Remember to @import WebKit at the top of the class

// Javascript that disables pinch-to-zoom by inserting the HTML viewport meta tag into <head>
NSString *source = @"var meta = document.createElement('meta'); \
meta.name = 'viewport'; \
meta.content = 'width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no'; \
var head = document.getElementsByTagName('head')[0];\
head.appendChild(meta);";
WKUserScript *script = [[WKUserScript alloc] initWithSource:source injectionTime:WKUserScriptInjectionTimeAtDocumentEnd forMainFrameOnly:YES];

// Create the user content controller and add the script to it
WKUserContentController *userContentController = [WKUserContentController new];
[userContentController addUserScript:script];

// Create the configuration with the user content controller
WKWebViewConfiguration *configuration = [WKWebViewConfiguration new];
configuration.userContentController = userContentController;

// Create the web view with the configuration
WKWebView *webView = [[WKWebView alloc] initWithFrame:CGRectZero configuration:configuration];
webView.translatesAutoresizingMaskIntoConstraints = NO;
[self.view addSubview:webView];

// Add the constraints
NSDictionary *views = NSDictionaryOfVariableBindings(webView);
[self.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:|[webView]|" options:0 metrics:nil views:views]];
[self.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|[webView]|" options:0 metrics:nil views:views]];

[webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://apple.com"]]];
	// Remember to @import WebKit at the top of the class

	// Javascript that disables pinch-to-zoom by inserting the HTML viewport meta tag into <head>
	NSString *source = @"var meta = document.createElement('meta'); \
	meta.name = 'viewport'; \
	meta.content = 'width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no'; \
	var head = document.getElementsByTagName('head')[0];\
	head.appendChild(meta);";
	WKUserScript *script = [[WKUserScript alloc] initWithSource:source injectionTime:WKUserScriptInjectionTimeAtDocumentEnd forMainFrameOnly:YES];

	// Create the user content controller and add the script to it
	WKUserContentController *userContentController = [WKUserContentController new];
	[userContentController addUserScript:script];

	// Create the configuration with the user content controller
	WKWebViewConfiguration *configuration = [WKWebViewConfiguration new];
	configuration.userContentController = userContentController;

	// Create the web view with the configuration
	WKWebView *webView = [[WKWebView alloc] initWithFrame:CGRectZero configuration:configuration];
	webView.translatesAutoresizingMaskIntoConstraints = NO;
	[self.view addSubview:webView];

	// Add the constraints
	NSDictionary *views = NSDictionaryOfVariableBindings(webView);
	[self.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:\|[webView]\|" options:0 metrics:nil views:views]];
	[self.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:\|[webView]\|" options:0 metrics:nil views:views]];

	[webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://apple.com"]]];