@SuppressLint("NewApi")
    @Override
    public void onTrimMemory(final int level) {
        super.onTrimMemory(level);
        if (level >= TRIM_MEMORY_MODERATE) {
            Log.i("Cleaning applications cache to trim memory");
            DataStore.removeAllFromCache();
        }
    }
<a href="https://code.google.com/p/android/issues/detail?id=173789">...</a>
introduced with JELLY_BEAN_MR2 / fixed in October 2016
main/src/main/java/cgeo/geocaching/CgeoApplication.java