iOS7以后的JavaScriptCore使用demo -

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iOS7以后的JavaScriptCore使用demo

博客分类：

JavaScriptCore

由于时间的关系，直接上代码

JSCallOC.html

<!doctype html>

<html>

<head>

<title>JSCallOC</title>

<style>

{

//-webkit-tap-highlight-color: rgba(0,0,0,0);

text-decoration: none;

}

html,body

{

-webkit-touch-callout: none; /* prevent callout to copy image, etc when tap to hold */

-webkit-text-size-adjust: none; /* prevent webkit from resizing text to fit */

-webkit-user-select: none; /* prevent copy paste, to allow, change 'none' to 'text' */

}

#div-a

{

background:#FBA;

color:#FFF;

border-radius: 25px 5px;

}

</style>

function showResult(resultNumber) {

//alert(resultNumber);

document.getElementById("result").innerText = resultNumber;

}

</script>

</head>

<!--<div>

<font size="3" color="black">输入一个整数：</font>

</div>

<br/>

<div>

</div>

<div>

</div>

<br/>

<br/>

<br/>

<br/>

<br/>

<br/>

<br/>

<!--<br/>

<br/>

<br/>

<br/>

<br/>

push to second ViewController

</a>

<br/>

</center>

</div>

</body>

</html>

----------------------------------------------------

JSDemoViewController.h

#import <UIKit/UIKit.h>

#import <JavaScriptCore/JavaScriptCore.h>

@protocol JSDemoExport <JSExport>

//JSExportAs

//(calculateForJS /** handleFactorialCalculateWithNumber 作为js方法的别名 */,

// - (void)handleFactorialCalculateWithNumber:(NSNumber *)number

// );

//- (void)pushViewController:(NSString *)view title:(NSString *)title;

-(void)testMethodWithParam1:(NSString *)param1 param2:(NSString *)param2;

-(void)testLog:(NSString *)logText;

-(void)testShowTextOnHtml:(NSString *)showText;

-(void)test:(NSNumber *)param1 method:(NSString *)param2;

-(void)testArray:(NSArray *)dataArray;

@end

@interface JSDemoViewController : UIViewController <UIWebViewDelegate, JSDemoExport>

{

UIWebView *myWebView;

JSContext *context;

}

@end

========================================================

#import "JSDemoViewController.h"

@interfaceJSDemoViewController ()

@end

@implementation JSDemoViewController

- (void)viewDidLoad {

[superviewDidLoad];

// Do any additional setup after loading the view.

NSString *path = [[[NSBundlemainBundle] bundlePath] stringByAppendingPathComponent:@"JSCallOC.html"];

// NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL fileURLWithPath:path]];

// [self.webView loadRequest:request];

//NSLog(@"path >>>= %@",path);

myWebView = [[UIWebViewalloc] initWithFrame:CGRectMake(0, 20, self.view.frame.size.width, 400)];

myWebView.delegate = self;

NSURL *URL = [NSURL URLWithString:path];

NSURLRequest *requestww = [NSURLRequest requestWithURL:URL];

[myWebView loadRequest:requestww];

[self.view addSubview:myWebView];

//NSLog(@"webView.frame = %@",NSStringFromCGRect(webView.frame));

}

#pragma mark - UIWebViewDelegate

- (void)webViewDidFinishLoad:(UIWebView *)webView{

// 以 html title 设置导航栏 title

self.title = [webView stringByEvaluatingJavaScriptFromString:@"document.title"];

// 禁用页面元素选择

//[webView stringByEvaluatingJavaScriptFromString:@"document.documentElement.style.webkitUserSelect='none';"];

// 禁用长按弹出ActionSheet

//[webView stringByEvaluatingJavaScriptFromString:@"document.documentElement.style.webkitTouchCallout='none';"];

// Undocumented access to UIWebView's JSContext

context = [webView valueForKeyPath:@"documentView.webView.mainFrame.javaScriptContext"];

// 打印异常

context.exceptionHandler = ^(JSContext *context, JSValue *exceptionValue) {

context.exception = exceptionValue;

NSLog(@"%@", exceptionValue);

};

context[@"Native"] = self; //以JSExport 协议关联 native 的方法

context[@"log"] = ^(NSString *str){//以block 形式关联 JavaScript function

NSLog(@"%@", str);

};

// 以 block 形式关联 JavaScript function

context[@"alert"] = ^(NSString *str) {

UIAlertView *alert = [[UIAlertViewalloc]initWithTitle:@"msg from js"message:str delegate:nilcancelButtonTitle:@"ok"otherButtonTitles:nil, nil];

[alert show];

};

__blocktypeof(self) weakSelf = self;

context[@"addSubView"] = ^(NSString *viewname) {

UIView *view = [[UIView alloc]initWithFrame:CGRectMake(10, 500, 300, 100)];

view.backgroundColor = [UIColorredColor];

UISwitch *sw = [[UISwitch alloc]init];

[view addSubview:sw];

[weakSelf.view addSubview:view];

};

}

- (void)didReceiveMemoryWarning {

[superdidReceiveMemoryWarning];

// Dispose of any resources that can be recreated.

}

-(void)testArray:(NSArray *)dataArray{

NSLog(@"testArray = %@", dataArray);

}

-(void)test:(NSNumber *)param1 method:(NSString *)param2{

NSLog(@"test>>> param1 = %@, method=%@ ",param1, param2);

}

-(void)testMethodWithParam1:(NSString *)param1 param2:(NSString *)param2{

NSLog(@"testMethodWithParam1>>> param1 = %@, param2=%@ ",param1, param2);

}

-(void)testLog:(NSString *)logText{

NSLog(@"testLog>>> logText = %@ ", logText);

}

-(void)testShowTextOnHtml:(NSString *)showText{

NSString *resultText = [NSString stringWithFormat:@"%@ date=%@",showText, [NSDate date]];

NSLog(@"%@", resultText);

[context[@"showResult"] callWithArguments:@[resultText]];//回调JS的方法showResult(resultText);

}

@end

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参考资料 | iOS的UI元素布局的问题

2015-06-09 15:48
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