我正在尝试实现WebChromeClient的子类,以便在YouTube上嵌入视频链接(例如:https://www.youtube.com/embed/dQw4w9WgXcQ)在WebView中使用全屏按钮。
我基本上简化了this repo,这里有一些片段:
VideoWebChromeClient:
public class VideoWebChromeClient extends WebChromeClient {
private boolean isVideoFullscreen = false;
private View activityNonVideoView;
private ViewGroup activityVideoView;
private View videoViewContainer;
private CustomViewCallback videoCallback;
private Window videoWindow;
public VideoWebChromeClient(View activityNonVideoView, ViewGroup activityVideoView, Window window) {
this.activityNonVideoView = activityNonVideoView;
this.activityVideoView = activityVideoView;
this.videoWindow = window;
}
@Override
public void onShowCustomView(View view, CustomViewCallback callback) {
Log.w("ENTER FULLSCREEN");
videoCallback = callback;
videoViewContainer = view;
videoWindow.addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN | WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
activityNonVideoView.setVisibility(View.GONE);
activityVideoView.addView(videoViewContainer, new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
activityVideoView.setVisibility(View.VISIBLE);
isVideoFullscreen = true;
}
@Override
public void onHideCustomView() {
if (!isVideoFullscreen) {
return;
}
Log.w("EXIT FULLSCREEN");
activityVideoView.setVisibility(View.GONE);
activityVideoView.removeView(videoViewContainer);
activityNonVideoView.setVisibility(View.VISIBLE);
videoWindow.clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN | WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
videoViewContainer = null;
videoCallback.onCustomViewHidden();
isVideoFullscreen = false;
}
public boolean onBackPressed() {
onHideCustomView();
return isVideoFullscreen;
}
}
WebViewActivity
public class WebViewActivity extends BaseActivity {
public static final String WEB_VIEW_URL_EXTRA = "URL";
private boolean loadedFirstURL = true;
private VideoWebChromeClient mWebChromeClient;
@Bind(webview)
WebView mWebView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(provideLayoutId());
String url = (String) getIntent().getSerializableExtra(WEB_VIEW_URL_EXTRA);
// Check if URL is YouTube / Vimeo
if (RegexHelper.isVideoURL(url)){
// Allow Fullscreen
final View defaultLayout = findViewById(R.id.defaultLayout);
final View fullscreenLayout = findViewById(R.id.fullscreenLayout);
mWebChromeClient = new VideoWebChromeClient(defaultLayout, (ViewGroup) fullscreenLayout, getWindow());
mWebView.setWebChromeClient(mWebChromeClient);
// Block external links
mWebView.setWebViewClient(new WebViewClient() {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
if (loadedFirstURL) {
loadedFirstURL = false;
return false;
}
return true;
}
});
}
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.loadUrl(url);
}
@Override
public void onBackPressed() {
if (!mWebChromeClient.onBackPressed())
{
if (mWebView.canGoBack()) {
mWebView.goBack();
}
else {
super.onBackPressed();
}
}
}
}
它可以在 KitKat 上正常工作,但不能在 Nougat 上工作(我只有两个要测试的设备):当我点击全屏按钮时,它有时会进入全屏,但大多数时候它会闪现"并且不是全屏。
然后,当它实际处于全屏模式时,退出全屏的按钮不起作用(根本不会调用onHideCustomView
)
你可以看到我放了日志并注意到当" flash"实际上,onHideCustomView
实际上是在onShowCustomView
之后调用的("ENTER FULLSCREEN"
然后立即"EXIT FULLSCREEN"
),我不明白为什么。
非常感谢,如果有人能指出我的解决方案
答案 0 :(得分:0)
我也遇到了同样的问题,但我花了好几个小时就把它修好了。
您所要做的就是设置KitKat设备的UserAgent字符串。就是这样!
private String userAgent = "Mozilla/5.0 (Linux; Android 4.4; Nexus 5 Build/_BuildID_) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/30.0.0.0 Mobile Safari/537.36";
mWebView.getSettings().setUserAgentString(userAgent);
这将解决较新设备上 onShowCustomView()和 onHideCustomView()的所有奇怪功能。 希望它有所帮助。