网页与 iOS 原生混合开发实例
网页与 iOS 原生相互通信、传值，实现的功能：
1、打开、关闭 WebView
2、通过系统相机、相册获取图片传递给网页
3、保存、获取本地数据
4、网页调用原生打电话
JS 相关代码：
function CallApp(name, params, callback) {
if (params == null) {
params = {}
}
let data = {
name: name,
params: params,
callback: null
};
if (callback != null) {
var callback_name = 'C' + Math.random().toString(36).substr(2);
window[callback_name] = function(obj) {
callback(obj);
delete window[callback_name]
};
data.callback = callback_name
}
//Android.call(JSON.stringify(data));
//alert(JSON.stringify(data))
window.webkit.messageHandlers.call.postMessage(JSON.stringify(data));
};
OC 相关代码：
WKUserContentController *userCC = self.webView.configuration.userContentController;
[userCC addScriptMessageHandler:self name:@"call"];
#pragma mark - WKScriptMessageHandler
- (void)userContentController:(WKUserContentController *)userContentController didReceiveScriptMessage:(WKScriptMessage *)message {
NSLog(@"%@",message.body);
if ([message.name isEqualToString:@"call"]) {
NSString *messageJson = [NSString stringWithFormat:@"%@", message.body];
}
}
-(void)removeAllScriptMsgHandle{
WKUserContentController *controller = self.webView.configuration.userContentController;
[controller removeScriptMessageHandlerForName:@"call"];
}