展开全屏后屏幕变白

Question

在 USB 上调试时，我只想将 WebView 扩展到全屏。不幸的是，出现了白屏，之后什么也没有。我真的不知道该怎么办。我制作了 CustomView，一切看起来都很好。这是我的代码：

protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
       filmkey = "<iframe width=\"96%\" height=\"96%\" src=\"https://www.youtube.com/embed/EtMOgsWEAmQ\" frameborder=\"0\" allowfullscreen></iframe>";

        screen=(WebView)findViewById(R.id.webView);
        screen.getSettings().setJavaScriptEnabled(true);
        String myvideokey = filmkey;
        screen.loadData(myvideokey, "text/html", "utf-8");
        screen.setWebChromeClient(new WebChromeClient(){
            @Override
            public void onShowCustomView(View view, CustomViewCallback callback) {
                super.onShowCustomView(view, callback);
            }

            @Override
            public void onHideCustomView() {
                super.onHideCustomView();
            }
        });

}

Answer 1

试试下面的代码。在这个全屏模式中，我创建了一个View，它将变成全屏模式。

protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if (savedInstanceState != null) {
            screen.restoreState(savedInstanceState);
        }

        setContentView(R.layout.activity_support);
        filmkey = "<iframe width=\"96%\" height=\"96%\" src=\"https://www.youtube.com/embed/EtMOgsWEAmQ\" frameborder=\"0\" allowfullscreen></iframe>";

        screen=(WebView)findViewById(R.id.webview);
        screen.getSettings().setJavaScriptEnabled(true);
        String myvideokey = filmkey;
        screen.loadData(myvideokey, "text/html", "utf-8");
        CustomWebChromeClient custom = new CustomWebChromeClient();
        screen.setWebChromeClient(custom);
    }

而自定义的WebChromeClient 是

class `CustomWebChromeClient` extends WebChromeClient{


@Override
        public void onShowCustomView(View view, final CustomViewCallback callback) {
            super.onShowCustomView(view, callback);
            Dialog dialog = new Dialog(SupportActivity.this, android.R.style.Theme_Black_NoTitleBar_Fullscreen);
            view.setBackgroundColor(Color.TRANSPARENT);
            dialog.setContentView(view);
            dialog.setOnDismissListener(new DialogInterface.OnDismissListener() {
                @Override
                public void onDismiss(DialogInterface dialog) {
                    callback.onCustomViewHidden();
                }
            });
            dialog.show();
        }

    @Override
    public void onHideCustomView() {
        super.onHideCustomView();
    }
}

并确保在活动中使用所有这些方法来处理webView 中的数据。

@Override
    protected void onResume() {
        super.onResume();
        screen.onResume();
    }

    @Override
    protected void onPause() {
        super.onPause();
        screen.onPause();
    }

    @Override
    protected void onStop() {
        super.onStop();
        screen.stopLoading();
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        screen.destroy();
    }

    @Override
    protected void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        screen.saveState(outState);
    }

希望对你有帮助。