我想你的activity_main布局中没有start_bubble视图。
你应该添加按钮到你的activity_main，然后你应该改变这一行。
View startBubble = findViewById(R.id.start_bubble);
Button startBubble = findViewById(R.id.start_bubble);

事实证明，我试图在一个不活跃的布局中选择一个WebView，这导致了崩溃，修复方法是简单地选择其中包含WebView的布局

这对于那些处理webview崩溃并从中恢复的人来说也非常有用。
终止处理API终止处理API处理WebView对象的渲染器进程停止的情况，原因可能是系统终止渲染器以回收必要的内存，也可能是渲染器进程崩溃。通过使用此API，您可以让应用继续执行，即使渲染器进程已停止。
https://developer.android.com/develop/ui/views/layout/webapps/managing-webview#termination-handle

public class MyRendererTrackingWebViewClient extends WebViewClient {
private WebView mWebView;

@Override
public boolean onRenderProcessGone(WebView view,
        RenderProcessGoneDetail detail) {
    if (!detail.didCrash()) {
        // Renderer is killed because the system ran out of memory. The app
        // can recover gracefully by creating a new WebView instance in the
        // foreground.
        Log.e("MY_APP_TAG", "System killed the WebView rendering process " +
                "to reclaim memory. Recreating...");

        if (mWebView != null) {
            ViewGroup webViewContainer =
                    (ViewGroup) findViewById(R.id.my_web_view_container);
            webViewContainer.removeView(mWebView);
            mWebView.destroy();
            mWebView = null;
        }

        // By this point, the instance variable "mWebView" is guaranteed to
        // be null, so it's safe to reinitialize it.

        return true; // The app continues executing.
    }

    // Renderer crashes because of an internal error, such as a memory
    // access violation.
    Log.e("MY_APP_TAG", "The WebView rendering process crashed!");

    // In this example, the app itself crashes after detecting that the
    // renderer crashed. If you handle the crash more gracefully and let
    // your app continues executing, you must destroy the current WebView
    // instance, specify logic for how the app continues executing, and
    // return "true" instead.
    return false;
}

}
破坏WebView

private void destroyWebview() {
    if (webView != null) {
        Utilities.logThis("MainActivity destroyWebview  DESTROY WebView ... ACTION");
        //ViewGroup webViewContainer = (ViewGroup) findViewById(R.id.webview_container);
        webviewContainer.removeView(webView);
        webView.stopLoading();  // Stop any ongoing loading in case of a crash
        webView.onPause();      // Pause JavaScript execution
        webView.clearHistory(); // Clear WebView history
        webView.clearFormData();
        webView.removeAllViews(); // Remove all child views
        webView.clearCache(true);
        webView.destroy();  // Destroy the WebView
        webView = null; // Set the WebView reference to null
        webViewClient = null;
    }
}

以编程方式重建它

public void setupWebview() {  

    //webView = (WebView) findViewById(R.id.webview);
    // Create a new WebView instance
    webView = new WebView(this);
    webView.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));

    // Add the WebView to the container
    webviewContainer.addView(webView);

    Log.d("setupWebview", "Webview created " + webView);

    //Enabling hardware acceleration for WebView can improve performance but may also lead to crashes. You can disable it if it's causing issues:
    webView.setLayerType(View.LAYER_TYPE_SOFTWARE, null);

    webView.getSettings().setJavaScriptEnabled(true);
    webView.getSettings().setDomStorageEnabled(true);
    webView.getSettings().setLoadsImagesAutomatically(true);
    webView.getSettings().setAllowContentAccess(true);
    webView.getSettings().setLoadWithOverviewMode(true);
    //webView.getSettings().setAppCacheEnabled(true);
    //webView.getSettings().setAppCacheMaxSize(1024 * 1024 * 8); // 8MB
    webView.getSettings().setUseWideViewPort(true);

    webView.getSettings().setMediaPlaybackRequiresUserGesture(false);
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        webView.getSettings().setSafeBrowsingEnabled(false);
    }

    webView.getSettings().setMixedContentMode(WebSettings.MIXED_CONTENT_ALWAYS_ALLOW);

    //webView.setWebViewClient(new WebViewClient()); //https://stackoverflow.com/questions/48054518/android-app-not-connecting-to-internet-on-emulator

    webView.setRendererPriorityPolicy(WebView.RENDERER_PRIORITY_BOUND, true);
    //webViewClient = new MyRendererTrackingWebViewClient(this, webView);
    webViewClient = new MyWebViewClient();

    webView.setWebViewClient(webViewClient);
   

    CookieManager cookieManager = CookieManager.getInstance();
    cookieManager.setAcceptCookie(false);
    cookieManager.setAcceptThirdPartyCookies( webView, false);
}