html代码
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
</head>
<body>
<div style="margin-top: 20px">
<h2>JS与OC交互</h2>
<input type="button" value="唤起本地方法(call)" onclick="tianbai.call()">
</div>
<div>
<input type="button" value="唤起getCall:(NSString *)callString传值" onclick="call()">
</div>
<script>
var call = function()
{
var callInfo = JSON.stringify({"jianshu": "http://www.jianshu.com/users/55c8fdc3c6e7/latest_articles"});
tianbai.getCall(callInfo);
}
var Callback = function(str)
{
alert(str);
}
var alerCallback = function()
{
alert('成功');
}
</script>
</body>
</html>
.h文件
#import <UIKit/UIKit.h>
#import <JavaScriptCore/JavaScriptCore.h>
@protocol JSObjcDelegate <JSExport>
- (void)call;
- (void)getCall:(NSString *)callString;
@end
@interface ViewController : UIViewController<UIWebViewDelegate,JSObjcDelegate>
@property (nonatomic, strong) JSContext *jsContext;
@property (strong, nonatomic) UIWebView *webView;
@end
.m文件
#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
}
-(void)viewDidAppear:(BOOL)animated{
self.webView = [[UIWebView alloc]initWithFrame:CGRectMake(0, 20, [UIScreen mainScreen].bounds.size.width, [UIScreen mainScreen].bounds.size.height)];
self.webView.delegate = self;
NSString* path = [[NSBundle mainBundle] pathForResource:@"index" ofType:@"html"];
NSURL* url = [NSURL fileURLWithPath:path];
NSURLRequest* request = [NSURLRequest requestWithURL:url] ;
[self.webView loadRequest:request];
[self.view addSubview:self.webView];
}
- (void)webViewDidFinishLoad:(UIWebView *)webView {
self.jsContext = [webView valueForKeyPath:@"documentView.webView.mainFrame.javaScriptContext"];
self.jsContext[@"tianbai"] = self;
self.jsContext.exceptionHandler = ^(JSContext *context, JSValue *exceptionValue) {
context.exception = exceptionValue;
NSLog(@"异常信息：%@", exceptionValue);
};
}
- (void)call{
NSLog(@"call");
// 之后在回调js的方法Callback把内容传出去
JSValue *Callback = self.jsContext[@"Callback"];
//传值给web端
[Callback callWithArguments:@[@"唤起本地OC回调完成"]];
}
- (void)getCall:(NSString *)callString{
NSLog(@"Get:%@", callString);
// 成功回调js的方法Callback
JSValue *Callback = self.jsContext[@"alerCallback"];
[Callback callWithArguments:nil];
// 直接添加提示框
// NSString *str = @"alert('OC添加JS提示成功')";
// [self.jsContext evaluateScript:str];
}
@end
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