To check for the memory simple run this periodically

Runtime.getRuntime().maxMemory();

Runtime.getRuntime().totalMemory();

Runtime.getRuntime().freeMemory();

it will show all the details such as maximum memory your app is taking or total memory your app acquires. 

you can also override the following method to get the memory information - 

@Override

    public void onLowMemory() {

        super.onLowMemory();

        Log.w(TAG, "onLowMemory() -> clearImageCacheFu!!!");

        clearImageCacheFu();

        dispatchGoogleTracker();

        stopGoogleTracker();

    }