Util Classes

This project is destinated just to contain util classes for Android

ManageDataJson.java

This class was made just to store a list of objects in a text file as a Json.

First you need to add the Gson lib in your project gradle:

#Always replace with the last version
compile 'com.google.code.gson:gson:2.8.1' 

In your Android Manifest file put:

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

To use the class, initialize it passing the file path and the activity:

ManageDataJson.initialize("FILE_PATH", this);

After this, just record and read the objects:

• Record:

ManageDataJson.recordNewData(yourObject);

• Read:

List<YourObject> objects = ManageDataJson.getData();

Remember that the list just store one type of object, but this object can be from any type. So, if you want to use more than one type, use more than one list storing more than one file :)