CustomUncaughtExceptionHandlerProxy.java

public class CustomUncaughtExceptionHandlerProxy implements Thread.UncaughtExceptionHandler {

    private static CustomUncaughtExceptionHandlerProxy proxy;

    private final boolean enabled;

    private Thread.UncaughtExceptionHandler customUncaughtExceptionHandler;

    private CustomUncaughtExceptionHandlerProxy(CustomApplication application) {
        enabled = !application.inDevMode();
        if (enabled) {
            // Save a reference to the current default handler.
            customUncaughtExceptionHandler = Thread.getDefaultUncaughtExceptionHandler();
            // Set our custom handler as the default one, so that it's first notified when something ugly happens.
            Thread.setDefaultUncaughtExceptionHandler(this);
        }
    }

    public static void initialize(CustomApplication application) {
        if (proxy == null) {
            proxy = new CustomUncaughtExceptionHandlerProxy(application);
        }
    }

    public static CustomUncaughtExceptionHandlerProxy getInstance() {
        return proxy;
    }

    @Override
    public void uncaughtException(Thread thread, Throwable ex) {
        if (enabled) {
            if (!preferences.rateAppDialogAlreadyShown()) {
                // reset count only if the 'rate app' dialog hasn't been already shown.
                preferences.resetShowRateAppDialogCountdown();
            }
            // Let the default uncaught exception handler do its job.
            customUncaughtExceptionHandler.uncaughtException(thread, ex);
        } else {
            Thread.getDefaultUncaughtExceptionHandler().uncaughtException(thread, ex);
        }
    }
}