package com.basic.security.utils; import android.text.TextUtils; import com.basic.security.model.ModelAdapter; public class MutableDocumentUtil { public static String getString(ModelAdapter document, String key) { String value = ""; try { if (document != null) { value = document.getString(key); if (TextUtils.isEmpty(value)) { value = ""; } return value; } } catch (Exception e) { e.printStackTrace(); } return value; } }