WKWebView音视频媒体播放处理
1. 对WKWebViewConfiguration进行设置。实现媒体文件可以自动播放、使用内嵌HTML5播放等功能
使用这个测试网址
// 初始化配置对象WKWebViewConfiguration *configuration = [ init];// 默认是NO，这个值决定了用内嵌HTML5播放视频还是用本地的全屏控制configuration.allowsInlineMediaPlayback = YES;// 自动播放, 不需要用户采取任何手势开启播放// WKAudiovisualMediaTypeNone 音视频的播放不需要用户手势触发, 即为自动播放configuration.mediaTypesRequiringUserActionForPlayback = WKAudiovisualMediaTypeNone;configuration.allowsAirPlayForMediaPlayback = YES;configuration.allowsPictureInPictureMediaPlayback = YES; self.webView = [ initWithFrame:self.view.bounds configuration:configuration];self.webView.navigationDelegate = self;NSURL *url =;];;由于H5的video未设置autoplay、playsinline属性。我们需自己注入，才能实现效果。
NSString *jSString = @"document.getElementsByTagName('video').setAttribute('playsinline','');";NSString *jSString2 = @"document.getElementsByTagName('video').autoplay=true;";//用于进行JavaScript注入WKUserScript *wkUScript = [ initWithSource:jSString injectionTime:WKUserScriptInjectionTimeAtDocumentEnd forMainFrameOnly:YES];WKUserScript *wkUScript2 = [ initWithSource:jSString2 injectionTime:WKUserScriptInjectionTimeAtDocumentEnd forMainFrameOnly:YES];;;2. 监听网页内播放器的回调
可以使用两种办法。
2.1 利用HTML5 Audio/Video 事件
HTML5 Audio/Video 事件代码可以由H5同事完成，也可以由App端注入。
注入代码如下：
NSString *jSString3 = @"document.getElementsByTagName('video').addEventListener('canplay', function(e) {window.webkit.messageHandlers.readytoplay.postMessage(\"canplay\");})";NSString *jSString4 = @"document.getElementsByTagName('video').addEventListener('pause', function(e) {window.webkit.messageHandlers.pause.postMessage(\"pause\");})";NSString *jSString5 = @"document.getElementsByTagName('video').addEventListener('play', function(e) {window.webkit.messageHandlers.play.postMessage(\"play\");})";NSString *jSString6 = @"document.getElementsByTagName('video').addEventListener('ended', function(e) {window.webkit.messageHandlers.ended.postMessage(\"ended\");})";WKUserScript *wkUScript3 = [ initWithSource:jSString3 injectionTime:WKUserScriptInjectionTimeAtDocumentEnd forMainFrameOnly:YES];;WKUserScript *wkUScript4 = [ initWithSource:jSString4 injectionTime:WKUserScriptInjectionTimeAtDocumentEnd forMainFrameOnly:YES];;WKUserScript *wkUScript5 = [ initWithSource:jSString5 injectionTime:WKUserScriptInjectionTimeAtDocumentEnd forMainFrameOnly:YES];;WKUserScript *wkUScript6 = [ initWithSource:jSString6 injectionTime:WKUserScriptInjectionTimeAtDocumentEnd forMainFrameOnly:YES];;App端接收js的代码如下：
需遵守WKScriptMessageHandler协议
@interface ViewController () @end再为WKWebViewConfiguration添加协议
//添加一个协议;;;;使用以下方法即可获取播放器事件
#pragma mark - WKScriptMessageHandler//! WKWebView收到ScriptMessage时回调此方法- (void)userContentController:(WKUserContentController *)userContentController didReceiveScriptMessage:(WKScriptMessage *)message { if ( == NSOrderedSame) { NSLog(@"video is readytoplay"); } if ( == NSOrderedSame) { NSLog(@"video is play"); } if ( == NSOrderedSame) { NSLog(@"video is pause"); } if ( == NSOrderedSame) { NSLog(@"video is ended"); }}参考资料：
HTML 音频/视频参考手册
video 属性和事件用法大全
iOS与JS交互之WKWebView-WKScriptMessageHandler协议
2.2 还有一种是App可自己实现的,使用AVAudioSession进行监听：
使用AVAudioSession监听，必须用到AVAudioSessionCategoryOptionMixWithOthers。这样会导致切换别的音视频App不会打断播放器。例如网易云音乐、bilibili。
手机来电会打断播放器。
NSError *sessionError = nil;[ setCategory:AVAudioSessionCategoryPlayback withOptions:AVAudioSessionCategoryOptionMixWithOthers error:&sessionError];[ setActive:YES error:nil];[ addObserver:self selector:@selector(audioSessionSilenceSecondaryAudioHint:) name:AVAudioSessionSilenceSecondaryAudioHintNotification object:];- (void)audioSessionSilenceSecondaryAudioHint:(NSNotification *)notification{ NSDictionary *userInfo = notification.userInfo; NSLog(@"audioSessionSilenceSecondaryAudioHint%@",userInfo);}开始播放输出：
2021-04-01 15:22:31.302248+0800 webViewPlayMedia audioSessionSilenceSecondaryAudioHint{ AVAudioSessionSilenceSecondaryAudioHintTypeKey = 1;结束播放输出：
2021-04-01 15:22:31.382646+0800 webViewPlayMedia audioSessionSilenceSecondaryAudioHint{ AVAudioSessionSilenceSecondaryAudioHintTypeKey = 0;3. 获取视频播放地址，使用自定义播放器进行播放
- (void)webView:(WKWebView *)webView didFinishNavigation:(null_unspecified WKNavigation *)navigation { NSLog(@"WKPhoneWebView didFinishNavigation"); NSString *JsStr = @"(document.getElementsByTagName(\"video\")).src"; ] && response != nil){ //截获到视频地址了 NSLog(@"response == %@",response); }else{ //没有视频链接 } }];}4. 坑
4.1 播放视频，会有ERROR提示：
2021-04-01 09:34:57.361477+0800 webViewPlayMedia Error acquiring assertion: 2021-04-01 09:34:57.361610+0800 webViewPlayMedia 0x1043dc990 - ProcessAssertion: Failed to acquire RBS MediaPlayback assertion 'WebKit Media Playback' for process with PID 17110, error: Error Domain=RBSAssertionErrorDomain Code=3 "Required client entitlement is missing" UserInfo={RBSAssertionAttribute=, NSLocalizedFailureReason=Required client entitlement is missing}但是设置了background属性了，依然无法解除，但是不影响播放。
这个问题在https://stackoverflow.com/questions/66493177/required-client-entitlement-is-missing-in-wkwebview亦有提出，但是没有解决方案。
4.2 iOS13.2 13.3系统手机会在加载WKWebView时会连续报错：
2021-04-01 15:55:11.083253+0800 webViewPlayMedia kill() returned unexpected error 1在该系统版本下，WKWebView使用配置WKWebViewConfiguration，会无法播放。
资料：收到控制台警告：当我在iOS13.2中加载WKWebView时， kill() returned unexpected error 1
该错误已在13.4版本中修复。
免责声明：如果侵犯了您的权益，请联系站长，我们会及时删除侵权内容，谢谢合作！
页:
[1]