CODEWITHSUNDEEP
androidsharedpreferences
Jack
Jack

Reputation: 743

How to save data to sharedpreference in a flexible way

I save chosen items into shared preference, but as the user during runtime get to remove any of these items (from any position), and as I use the saved size (in the code below) to loop through the items, and here's the problem

Say I have 5 items ( item_1 - item_2 - item_3 - item_4 - item_5 )

if the user removed item_2 I update chosen_items_size to be 4 and I remove item_2 from the shared preference.

but when I load the items later I use the (size = which is 4 now), which as in the code below will miss item_5, how to fix this, any suggestions or better approach to achieve what I need?

    mSharedPreference = getSharedPreferences("chosen_items", MODE_PRIVATE);
    int size = mSharedPreference.getInt("chosen_items_size", 0);
    for(int i = 1; i <= size; i++) {

       mSharedPreference.getString("item_" + i, null);

    }

Knowing that I want to enable drag and drop items, which using the above approach will make it pretty hard (if possible in the first place) to accomplish, any better approach to save & retrieve data / items?

Thank you

Upvotes: 2

Views: 205

Answers (2)

urgentx
urgentx

Reputation: 3931

If you have a small amount of strings you can store them in one delimited string in SharedPreferences like so. You could also associate some metadata with each item and delimit that too.

Upvotes: 3

Notsileous
Notsileous

Reputation: 560

You could utilize a built in SQL lite database.
Is this data that must persist between sessions? if not store it locally with a class and static variables/arrays.

Upvotes: 2

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