做客户端开发，肯定避免不了JS交互，于是自己对苹果接口做了个简易封装：
JSExport-->UIWebView+Interaction、WKScriptMessageHandler -->WKWebView+Interaction以备以后使用。
代码非常简洁，见这里：https://github.com/V5zhou/JSInteraction.git
旧方式
旧的交互方式有通过UIWebViewDelegate实现的：JS与客户端定义好跳转页面参数，在将要跳转时捕获关键字，然后处理业务。
iOS端：
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- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType {
NSString *urlString = [[request URL] absoluteString];
if ([urlString isEqualToString:@"objc://loading"]) {
if (_gotoRootViewController) {
_gotoRootViewController();
}
}
return YES;
}
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JS端：
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<!DOCTYPE html>
<html>
<title>test</title>
<meta charset="utf-8">
<body>
<a href="javascript:document.location = 'objc://loading'" rel="external nofollow" class="btn">这是交互按钮</a>
</body>
</html>
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UIWebView+JSExport方式
导入JavaScriptCore.framework，并导入我的扩展类#import "UIWebView+Interaction.h"。
使用方式
OC调JS：
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[_webView InterActionToJs:@"alertMobile('15625298071')"];
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JS调OC:
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- (void)webViewDidFinishLoad:(UIWebView *)webView {
[self.webView InterActionToOc:^(InterActionOcType functionType, NSDictionary *param) {
switch (functionType) {
case InterActionOcType_alert:
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:param[@"title"] message:param[@"content"] delegate:nil cancelButtonTitle:nil otherButtonTitles:@"确定", nil];
[alert show];
}
break;
case InterActionOcType_present:
{
self.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
Class Cls = NSClassFromString(param[@"toController"]);
BOOL isAnimate = [param[@"animate"] boolValue];
UIViewController *ctl = [[Cls alloc] init];
[self presentViewController:ctl animated:isAnimate completion:nil];
}
break;
default:
break;
}
}];
}
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添加动作
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//自定义添加功能类型
typedef NS_ENUM(NSUInteger, InterActionOcType) {
InterActionOcType_alert = 0,
InterActionOcType_present,
InterActionOcType_xxxxxxx, //有啥需求就和这里添加
};
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并且对应的html中添加JS,参数封装为字典形式。例：
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function myPresent(ctl) {
var param = new Array();
param["animate"] = 1;
param["toController"] = "SecondViewController";
WebViewInteraction.callBack(1, param);
}
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其中callBack是通过这个JSExport实现的
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@protocol WebViewJSExport <JSExport>
JSExportAs
(callBack /** callBack 作为js方法的别名 */,
- (void)awakeOC:(InterActionOcType)type param:(NSDictionary *)param
);
@end
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WKWebView+WKScriptMessageHandler方式
导入WebKit.framework，并导入我的扩展类#import "WKWebView+Interaction.h"。
使用方式
OC调JS：
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[self.wkWebView InterActionToJs:@"JSReloadTitle('你点了刷新JS按钮，我没猜错！')"];
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JS调OC:
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//注册交互类型
[self.wkWebView registerScriptTypes:@{@"OCDismiss" : @(WKInterActionOcType_dismiss),
@"OCShowAlert" : @(WKInterActionOcType_alert)}];
[self.wkWebView InterActionToOc:^(WKInterActionOcType functionType, NSDictionary *param) {
switch (functionType) {
case WKInterActionOcType_dismiss:
{
BOOL isAnimate = [param[@"animate"] boolValue];
[self dismissViewControllerAnimated:isAnimate completion:nil];
}
break;
case WKInterActionOcType_alert:
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"JS去做平方" message:nil delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"确定", nil];
alert.alertViewStyle = UIAlertViewStylePlainTextInput;
[alert show];
}
break;
default:
break;
}
}];
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添加动作
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//自定义添加功能类型
typedef NS_ENUM(NSUInteger, WKInterActionOcType) {
WKInterActionOcType_alert = 0,
WKInterActionOcType_dismiss,
WKInterActionOcType_xxxxxxx, //有啥需求就和这里添加
};
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并且对应的html中添加JS,参数封装为字典形式。例：
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//js调oc
function myDismiss() {
window.webkit.messageHandlers.OCDismiss.postMessage({"animate" : 1}); //这里的OCDismiss对应注册类型
}
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其中callBack是通过WKScriptMessageHandler实现的
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- (void)userContentController:(WKUserContentController *)userContentController didReceiveScriptMessage:(WKScriptMessage *)message {
dispatch_async(dispatch_get_main_queue(), ^{
NSString *name = message.name;
NSDictionary *value = message.body;
WKInterActionOcType type = [self.typeDict[name] integerValue];
if (self.block) {
self.block(type, value);
}
});
}
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以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：http://www.jianshu.com/p/5b2bbd283e2f?utm_source=tuicool&utm_medium=referral