로컬스토리지 사용

webview.getSettings().setDomStorageEnabled(true);
webview.getSettings().setDatabaseEnabled(true);
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
    webview.getSettings().setDatabasePath("/data/data/" + webview.getContext().getPackageName() + "/databases/");

}