NativeScriptUncaughtExceptionHandler.java

package com.tns;

import java.lang.Thread.UncaughtExceptionHandler;

import android.content.Context;

public class NativeScriptUncaughtExceptionHandler implements UncaughtExceptionHandler {
    private final Context context;

    private final UncaughtExceptionHandler defaultHandler;

    private final Logger logger;

    public NativeScriptUncaughtExceptionHandler(Logger logger, Context context) {
        this.logger = logger;
        this.context = context;
        defaultHandler = Thread.getDefaultUncaughtExceptionHandler();
    }

    @Override
    public void uncaughtException(Thread thread, Throwable ex) {
        String currentThreadMessage = "An uncaught Exception occurred on \"" + thread.getName() + "\" thread.\n";

        String errorMessage = currentThreadMessage + getErrorMessage(ex);

        if (Runtime.isInitialized()) {
            try {
                ex.printStackTrace();

                Runtime runtime = Runtime.getCurrentRuntime();

                if (runtime != null) {
                    runtime.passUncaughtExceptionToJs(ex, errorMessage);
                }
            } catch (Throwable t) {
                t.printStackTrace();
            }
        }

        if (logger.isEnabled()) {
            logger.write("Uncaught Exception Message=" + errorMessage);
        }

        boolean res = false;

        if (Util.isDebuggableApp(context)) {
            try {
                Class<?> ErrReport = null;
                java.lang.reflect.Method startActivity = null;

                ErrReport = java.lang.Class.forName("com.tns.ErrorReport");

                startActivity = ErrReport.getDeclaredMethod("startActivity", android.content.Context.class, String.class);

                res = (Boolean) startActivity.invoke(null, context, errorMessage);
            } catch (Exception e) {
                android.util.Log.v("Error", errorMessage);
                e.printStackTrace();
                android.util.Log.v("Application Error", "ErrorActivity default implementation not found. Reinstall android platform to fix.");
            }
        }

        if (!res && defaultHandler != null) {
            defaultHandler.uncaughtException(thread, ex);
        }
    }

    private static String getErrorMessage(Throwable ex) {
        String content;
        java.io.PrintStream ps = null;

        try {
            java.io.ByteArrayOutputStream baos = new java.io.ByteArrayOutputStream();
            ps = new java.io.PrintStream(baos);
            ex.printStackTrace(ps);

            try {
                content = baos.toString("US-ASCII");
            } catch (java.io.UnsupportedEncodingException e) {
                content = e.getMessage();
            }
        } finally {
            if (ps != null) {
                ps.close();
            }
        }

        return content;
    }
}