ios:jsbridge

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ExampleApp.html
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WebViewJavascriptBridge Demo

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ViewController.m
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//
//  ViewController.m
//  TestJsBridge
//
//  Created by samson on 2017/1/10.
//  Copyright © 2017年 samson. All rights reserved.
//

#import "ViewController.h"
#import "WebViewJavascriptBridge.h"

@interface ViewController ()
@property WebViewJavascriptBridge* bridge;
@end

@implementation ViewController

- (void)viewWillAppear:(BOOL)animated {
    if (_bridge) { return; }
   
    UIWebView* webView = [[UIWebView alloc] initWithFrame:self.view.bounds];
    [self.view addSubview:webView];
   
    [WebViewJavascriptBridge enableLogging];
   
    _bridge = [WebViewJavascriptBridge bridgeForWebView:webView];
    [_bridge setWebViewDelegate:self];
   
    //注册监听js事件 (监听testObjcCallback方法) js调用oc
    [_bridge registerHandler:@"testObjcCallback" handler:^(id data, WVJBResponseCallback responseCallback) {
        NSLog(@"testObjcCallback called: %@", data);
        //返回给js数据
        responseCallback(@{ @"foo":@"before ready fuck" });
    }];
   
    [_bridge callHandler:@"testJavascriptHandler" data:@{ @"foo":@"before ready" }];
   
    [self renderButtons:webView];
    [self loadExamplePage:webView];
}

- (void)webViewDidStartLoad:(UIWebView *)webView {
    NSLog(@"webViewDidStartLoad");
}

- (void)webViewDidFinishLoad:(UIWebView *)webView {
    NSLog(@"webViewDidFinishLoad");
}

- (void)renderButtons:(UIWebView*)webView {
    UIFont* font = [UIFont fontWithName:@"HelveticaNeue" size:11.0];
   
    UIButton *callbackButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    [callbackButton setTitle:@"Call handler" forState:UIControlStateNormal];
    [callbackButton addTarget:self action:@selector(ocCallJsHandler:) forControlEvents:UIControlEventTouchUpInside];
    [self.view insertSubview:callbackButton aboveSubview:webView];
    callbackButton.frame = CGRectMake(0, 400, 100, 35);
    callbackButton.titleLabel.font = font;
   
    UIButton* reloadButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    [reloadButton setTitle:@"Reload webview" forState:UIControlStateNormal];
    [reloadButton addTarget:webView action:@selector(reload) forControlEvents:UIControlEventTouchUpInside];
    [self.view insertSubview:reloadButton aboveSubview:webView];
    reloadButton.frame = CGRectMake(90, 400, 100, 35);
    reloadButton.titleLabel.font = font;
   
    UIButton* safetyTimeoutButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    [safetyTimeoutButton setTitle:@"Disable safety timeout" forState:UIControlStateNormal];
    [safetyTimeoutButton addTarget:self action:@selector(disableSafetyTimeout) forControlEvents:UIControlEventTouchUpInside];
    [self.view insertSubview:safetyTimeoutButton aboveSubview:webView];
    safetyTimeoutButton.frame = CGRectMake(190, 400, 120, 35);
    safetyTimeoutButton.titleLabel.font = font;
}

- (void)disableSafetyTimeout {
    [self.bridge disableJavscriptAlertBoxSafetyTimeout];
}

/**
* oc调用js
**/
- (void)ocCallJsHandler:(id)sender {
    id data = @{ @"greetingFromObjC": @"Hi there, JS!" };
    [_bridge callHandler:@"testJavascriptHandler" data:data responseCallback:^(id response) {
        NSLog(@"testJavascriptHandler responded: %@", response);
    }];
}

- (void)loadExamplePage:(UIWebView*)webView {
    NSString* htmlPath = [[NSBundle mainBundle] pathForResource:@"ExampleApp" ofType:@"html"];
    NSString* appHtml = [NSString stringWithContentsOfFile:htmlPath encoding:NSUTF8StringEncoding error:nil];
    NSURL *baseURL = [NSURL fileURLWithPath:htmlPath];
    [webView loadHTMLString:appHtml baseURL:baseURL];
}
@end