Listview With Custom Adapter

Question

I followed several tutorials but I still can't populate my list view. What am I doing wrong? this is the layout spaced_list.xml

Solution 1:

Change this:

public CategoriesAdapter(Context context, ArrayList<Category> categories){
        super(context, 0); // <- Wrong constructorthis.context = context;
        this.categories = categories;
    }

To this:

public CategoriesAdapter(Context context, ArrayList<Category> categories){
        super(context, 0, categories);
        this.context = context;
        this.categories = categories;
    }

You are currently calling this constructor of the super class:

publicArrayAdapter(Context context, int textViewResourceId) {
        init(context, textViewResourceId, 0, new ArrayList<T>());
    }

Which will eventually create a new ArrayList and ignore the data you passed in.

Baca Juga

Solution 2:

The problem is in the constructor in your adapter. You need to provide your ArrayList<Category> when you call super(). Here is the code:

public CategoriesAdapter(Context context, ArrayList<Category> categories){
    super(context, 0, categories); //Providing objects to represent in the ListViewthis.context = context;
    this.categories = categories;
}

This is the documentation with the reference for this ArrayAdapter constructor.

Android Coder

Listview With Custom Adapter

Solution 1:

Solution 2:

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