iOS_経験(4)jsとocインタラクション(UI&WKWebView)

一丶说明

    WKWebView

   、   
WKWebView     HTML5   
WKWebView  ，        UIWebView 1/3 ~ 1/4
WKWebView  60fps              
WKWebView  Safari   JavaScript  
WKWebView         
 UIWebViewDelegate UIWebView    14   3   

WKWebView   :http://www.jianshu.com/p/7bb5f15f1daa

二丶iOS呼び出しjs
WKWebView

    :
- (void)evaluateJavaScript:(NSString *)javaScriptString completionHandler:(void (^ __nullable)(__nullable id, NSError * __nullable error))completionHandler;

  :  js hello()  ,  "   iOS  "   

iOS  ;
[self.webView evaluateJavaScript:@"hello('   iOS   ')" completionHandler:nil];

js  

function hello(msg)
{
        document.write(msg);
}

UIWebView

iOS  
   [self.webView stringByEvaluatingJavaScriptFromString:@"hello('   iOS   ')"];
js:
 function hello(msg) {
   document.write(msg)
}

三丶js呼び出しiOS
WKWebView

    :
- (void)addScriptMessageHandler:(id )scriptMessageHandler name:(NSString *)name;
  :js    ,  iOS hello_OC  ;    :{hello:1};

js  :



oc  :
1.  

2.    /  
  WKWebViewConfiguration *config = [[WKWebViewConfiguration alloc] init];
//                    :
// [config.userContentController addScriptMessageHandler:self name:@"hello_OC"];
  (WeakScriptMessageDelegate       ,      )
  [config.userContentController addScriptMessageHandler:[[WeakScriptMessageDelegate alloc] initWithDelegate:self] name:@"hello_OC"];

self.webView = [[WKWebView alloc] initWithFrame:CGRectZero
                                      configuration:config];

3.
#pragma mark - WKScriptMessageHandler
- (void)userContentController:(WKUserContentController *)userContentController
      didReceiveScriptMessage:(WKScriptMessage *)message
{
    NSLog(@"", message.name, message.body);
}
4.WeakScriptMessageDelegate

#import 
#import 

@interface WeakScriptMessageDelegate : NSObject

@property (nonatomic, weak) id scriptDelegate;

- (instancetype)initWithDelegate:(id)scriptDelegate;

@end

@implementation WeakScriptMessageDelegate

- (instancetype)initWithDelegate:(id)scriptDelegate
{
    self = [super init];
    if (self) {
        _scriptDelegate = scriptDelegate;
    }
    return self;
}

- (void)userContentController:(WKUserContentController *)userContentController didReceiveScriptMessage:(WKScriptMessage *)message
{
    [self.scriptDelegate userContentController:userContentController didReceiveScriptMessage:message];
}

@end

UIWebView

iOS  :

#pragma mark - delegete
-(BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
{
    NSLog(@"__>%s",__func__);
    NSLog(@"__>%@",request.URL.absoluteString);
    NSString *parameterStr = [[request.URL.absoluteString componentsSeparatedByString:@"parm:"] lastObject];
    NSDictionary *dict  = [parameterStr ZB_dictionaryWithURLString];
    NSLog(@"js  oc,   :%@",dict);
    
    return YES;
}

js  :
function toOC(argument) {
            /*UIWebVIew*/
            window.location.href = "parm:hello iOS"
}

function iOSShareApp(argument) {
            /*UIWebView*/
            window.location.href = "parm:shareTitle=hyd&shareDesc='   '&shareUrl='       '&sharePic='www.hyd.com'"
        }

四丶注意
五丶github
https://github.com/k373379320/OCAndJs
成熟したサードパーティ:https://github.com/marcuswestin/WebViewJavascriptBridge