Android webview 崩溃“致命信号 5 (SIGTRAP)”

Question

I have an app with a web view in which I load HTML content with JavaScript enabled. The web view is inside a fragment.

This is how I initialize the web view inside the method onCreateView of the fragment:

WebView webview = (WebView) mainView.findViewById(R.id.webview);

WebSettings webSettings = webview.getSettings();

webSettings.setJavaScriptEnabled(true);
webSettings.setDisplayZoomControls(false);
webSettings.setLoadsImagesAutomatically(true);
webSettings.setBuiltInZoomControls(true);
webSettings.setDomStorageEnabled(true);
webSettings.setSupportMultipleWindows(true);

webview.setWebViewClient(new WebViewClient() {
    @Override
    public void onPageFinished(WebView view, String url) {
        super.onPageFinished(view, url);
        /*
        * My code
        */
    }
});

webview.setWebChromeClient(new WebChromeClient() {
    @Override
    public boolean onCreateWindow(WebView view, boolean isDialog, boolean isUserGesture, Message resultMsg) {
        WebView.HitTestResult result = view.getHitTestResult();
        String data = result.getExtra();
        if (data != null) {
            Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(data));
            startActivity(browserIntent);
        }
        return false;
    }
});

webview.loadDataWithBaseURL(baseUrl, htmlData, "text/html", "utf-8", "");

In the web view, a map is loaded with JavaScript. On this map, we can click on elements and load photos. When clicked, the photo is displayed in a popup (still inside the web view). When I click on the back button to go back to the map, the app crashes.

Here is the error log:

A/libc: Fatal signal 5 (SIGTRAP), code 1 in tid 949 (Chrome_InProcRe) [ 03-21 11:26:08.510 364: 364 W/ ] debuggerd: handling request: pid=32610 uid=10289 gid=10289 tid=949

I tested and got the crash on Android 7.1.1, 6.0.1, 5.0.2. Then I tried with Android 4.4.2 and the app didn't crash.

When I click on the back button (as we can see on the GIF), it should go back to the previous state with the popup closed

Answer 1

这应该在 Activity.java 的 onCreate 方法之前

    webView.setWebViewClient(new MyBrowser());

Answer 2

Try to override the back navigation functionality and close the popup yourself.

You don't need to handle all the stack navigation logic, just have a state when you are showing this popup. Apply your own navigation logic(like manually closing the popup).

void onBackPressed(){
    if(isTheBuggyPopupIsOn){
        closeTheBuggyPopup();
    }
    else{
        super.onBackPressed();
    }
}

Answer 3

    webView.setWebViewClient(new MyBrowser());


public class MyBrowser extends WebViewClient {
        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            // TODO Auto-generated method stub

            if (url.equals(""YOUR URL)) {
                Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
                startActivity(intent);
                return true;
            } else {
                return false;
            }

        }

    }

Answer 4

Try this....

First add this

webView.setWebViewClient(new MyBrowser());

and then add this

public class MyBrowser extends WebViewClient {
        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            // TODO Auto-generated method stub

            if (url.equals(""YOUR URL)) {
                Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
                startActivity(intent);
                return true;
            } else {
                return false;
            }

        }

    }