做客戶端開發,肯定避免不了JS交互,于是自己對蘋果接口做了個簡易封裝:
JSExport-->UIWebView+Interaction、WKScriptMessageHandler -->WKWebView+Interaction以備以后使用。
代碼非常簡潔,見這里:https://github.com/V5zhou/JSInteraction.git
舊方式
舊的交互方式有通過UIWebViewDelegate實現的:JS與客戶端定義好跳轉頁面參數,在將要跳轉時捕獲關鍵字,然后處理業務。
iOS端:
- (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;
}
JS端:
<!DOCTYPE html>
<html>
<title>test</title>
<meta charset="utf-8">
<body>
<a href="javascript:document.location = 'objc://loading'" rel="external nofollow" class="btn">這是交互按鈕</a>
</body>
</html>
UIWebView+JSExport方式
導入JavaScriptCore.framework,并導入我的擴展類#import "UIWebView+Interaction.h"。
使用方式
OC調JS:
[_webView InterActionToJs:@"alertMobile('15625298071')"];
JS調OC:
- (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:@"確定", 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;
}
}];
}
添加動作
//自定義添加功能類型
typedef NS_ENUM(NSUInteger, InterActionOcType) {
InterActionOcType_alert = 0,
InterActionOcType_present,
InterActionOcType_xxxxxxx, //有啥需求就和這里添加
};
并且對應的html中添加JS,參數封裝為字典形式。例:
function myPresent(ctl) {
var param = new Array();
param["animate"] = 1;
param["toController"] = "SecondViewController";
WebViewInteraction.callBack(1, param);
}
其中callBack是通過這個JSExport實現的
@protocol WebViewJSExport <JSExport> JSExportAs (callBack /** callBack 作為js方法的別名 */, - (void)awakeOC:(InterActionOcType)type param:(NSDictionary *)param ); @end
WKWebView+WKScriptMessageHandler方式
導入WebKit.framework,并導入我的擴展類#import "WKWebView+Interaction.h"。
使用方式
OC調JS:
[self.wkWebView InterActionToJs:@"JSReloadTitle('你點了刷新JS按鈕,我沒猜錯!')"];
JS調OC:
//注冊交互類型
[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:@"確定", nil];
alert.alertViewStyle = UIAlertViewStylePlainTextInput;
[alert show];
}
break;
default:
break;
}
}];
添加動作
//自定義添加功能類型
typedef NS_ENUM(NSUInteger, WKInterActionOcType) {
WKInterActionOcType_alert = 0,
WKInterActionOcType_dismiss,
WKInterActionOcType_xxxxxxx, //有啥需求就和這里添加
};
并且對應的html中添加JS,參數封裝為字典形式。例:
//js調oc
function myDismiss() {
window.webkit.messageHandlers.OCDismiss.postMessage({"animate" : 1}); //這里的OCDismiss對應注冊類型
}
其中callBack是通過WKScriptMessageHandler實現的
- (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);
}
});
}
以上就是本文的全部內容,希望對大家的學習有所幫助,也希望大家多多支持億速云。
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