Read or Write a serializable ArrayList into a text file in android

You can save your ArrayList in a File and can fetch when needed and its a good practice to not using sharedprefrence for large files,You can use Sqllite database or you can save them in a file for better performance.

Use this method to write a serializable Arraylist in a file 

public static void write(Context context, Object nameOfClassGetterSetter) {

File directory = new File(context.getFilesDir().getAbsolutePath()

+ File.separator + "serlization");

if (!directory.exists()) {

directory.mkdirs();

}

String filename = "AnyName.srl";

ObjectOutput out = null;

try {

out = new ObjectOutputStream(new FileOutputStream(directory

+ File.separator + filename));

out.writeObject(nameOfClass);

out.close();

} catch (FileNotFoundException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

}

this method will simply write your arrayList at defined location

For eg:

                write(context, ArrayList<getterSetter> );

Use this method to read serializable Arraylist from a file :

                                                                     (type)

public static ArrayList<getterSetterclass> read(Context context) {

ObjectInputStream input = null;

ArrayList<getterSetterclass> ReturnClass = null;

String filename = "AnyName.srl";

File directory = new File(context.getFilesDir().getAbsolutePath()

+ File.separator + "serlization");

try {

input = new ObjectInputStream(new FileInputStream(directory

+ File.separator + filename));

ReturnClass = (ArrayList<getterSetterclass>) input.readObject();

input.close();

} catch (StreamCorruptedException e) {

e.printStackTrace();

} catch (FileNotFoundException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

} catch (ClassNotFoundException e) {

e.printStackTrace();

}

return ReturnClass;

}

this method will return a arrayList with saved data.

For eg:
          ArrayList<getterSetterclass> list =  read(context);