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https://issues.apache.org/jira/browse/CB-2303?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Joe Bowser resolved CB-2303.
----------------------------
Resolution: Won't Fix
This was abandoned, but I believe this is more trouble than it is worth at this
point. I'm going to close this for now.
> Add event for script errors
> ---------------------------
>
> Key: CB-2303
> URL: https://issues.apache.org/jira/browse/CB-2303
> Project: Apache Cordova
> Issue Type: New Feature
> Components: Android
> Reporter: Jonathan Prince
> Assignee: Joe Bowser
>
> Android webview does not support window.onerror for catching unexpected
> javascript errors. This makes cross platform error logging and analysis very
> difficult (especially on released software).
> A new event could easily be added to enable developers to track javascript
> errors.
> e.g. in CordovaChromeClient.java change the onConsoleMessage override from
> {code:title=CordovaChromeClient.java - Current method|borderStyle=solid}
> @TargetApi(8)
> @Override
> public boolean onConsoleMessage(ConsoleMessage consoleMessage)
> {
> if (consoleMessage.message() != null)
> LOG.d(TAG, consoleMessage.message());
> return super.onConsoleMessage(consoleMessage);
> }
> {code}
> All this currently does is re-log messages. Changing the method to the below
> also triggers a scripterror event for errors (this is just proof of concept
> code but works correctly). Developers can easily map this event to call a
> standard error handler.
> {code:title=CordovaChromeClient.java - Suggested method|borderStyle=solid}
> @TargetApi(8)
> @Override
> public boolean onConsoleMessage(ConsoleMessage consoleMessage)
> {
> if (consoleMessage.message() != null)
> {
> if (consoleMessage.messageLevel().name() == "ERROR")
> {
> String errorUrl =
> "javascript:cordova.fireDocumentEvent('scripterror', {msg: \"" +
> consoleMessage.message() + "\", line: " + consoleMessage.lineNumber() + ",
> url: \"" + consoleMessage.sourceId() + "\"});";
> this.appView.loadUrl(errorUrl);
> LOG.e(TAG, consoleMessage.message() + " line " +
> consoleMessage.lineNumber() + " in " + consoleMessage.sourceId());
> }
> else
> {
> LOG.d(TAG, consoleMessage.message());
> }
> }
> return super.onConsoleMessage(consoleMessage);
> }
> {code}
> The only quirk I have found with this approach is that javascript calls to
> console.error also trigger the scripterror event. This actually seems logical
> but developers should be aware of it.
> Otherwise; unexpected script errors and thrown errors trigger the event and
> handled errors (in try...catch blocks) don't.
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