Android Webview app shows black screen when i open it

Android weview app I compiled in andriod studio crashes immediately with a blackscreen when I open it. The app uses an iframe embed url.Compiles fine but crashes with a black screen when I open it.

Why is it crashing?

public class MainActivity extends AppCompatActivity {
private WebView zwebView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
String Video;
Video  = "<iframe width=\"560\" height=\"315\" src=\"https://www.youtube.com/embed/eGPbD-f0b_A\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen></iframe>";
WebSettings webSettings = zwebView.getSettings();
webSettings.setJavaScriptEnabled(true);
zwebView.setInitialScale(1);
zwebView.getSettings().setAllowFileAccess(true);
zwebView.getSettings().setPluginState(WebSettings.PluginState.ON_DEMAND);
zwebView.setWebChromeClient(new WebChromeClient());
zwebView.getSettings().setJavaScriptEnabled(true);
zwebView.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
zwebView.getSettings().setLoadWithOverviewMode(true);
zwebView.getSettings().setUseWideViewPort(true);
zwebView.getSettings().setAppCacheEnabled(true);
zwebView.loadData(Video, "text/html", "utf-8");
zwebView = (WebView) findViewById(R.id.myWebView);
zwebView.setWebViewClient(new WebViewClient() {
@Override
public boolean shouldOverrideUrlLoading(WebView webView, WebResourceRequest request) {
webView.loadUrl(request.getUrl().toString());
return true;
}
});
zwebView.loadUrl(Video);

I just copy-paste your code and its working fine the video is loading in the webview so if you face issue can you kindly share the log details that what error you actually getting.

public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
WebView zwebView = new WebView(this);
String Video;
Video  = "<iframe width=\"560\" height=\"315\" src=\"https://www.youtube.com/embed/eGPbD-f0b_A\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen></iframe>";
WebSettings webSettings = zwebView.getSettings();
webSettings.setJavaScriptEnabled(true);
zwebView.setInitialScale(1);
zwebView.getSettings().setAllowFileAccess(true);
zwebView.getSettings().setPluginState(WebSettings.PluginState.ON_DEMAND);
zwebView.setWebChromeClient(new WebChromeClient());
zwebView.getSettings().setJavaScriptEnabled(true);
zwebView.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
zwebView.getSettings().setLoadWithOverviewMode(true);
zwebView.getSettings().setUseWideViewPort(true);
zwebView.getSettings().setAppCacheEnabled(true);
zwebView.loadData(Video, "text/html", "utf-8");
zwebView.setWebViewClient(new WebViewClient() {
@Override
public boolean shouldOverrideUrlLoading(WebView webView, WebResourceRequest request) {
webView.loadUrl(request.getUrl().toString());
return true;
}
});
zwebView.loadUrl(Video);
setContentView(zwebView);
}
}

Here is the code which I use and it's working. not crashing after all.