ListViewAndAdapter.md

ListView And Adapter

@futabooo

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What is a ListView?

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It displays a list of scrollable items

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ListView in Couples

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What is an Adapter?

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##“Man in the Middle”

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Let's write our ListView

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ListView Overview

1. Declare our ListView in our layout.xml
2. Create our Adapter class
3. Fetch the items for our list
4. Specify the layout that we want for our list items
5. Plug our Adapter with our declared Listview

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1. Declare our ListView in our layout.xml

<ListView
    android:id="@+id/my_list"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    />

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2. Create our Adapter class

public class MyAdapter extends ArrayAdapter<String> {

    public MyAdapter(Context context, int resource, List<String> items) {
        super(context, resource, items);
    }

}

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3. Fetch the items for our list

List<String> items = new ArrayList<String>();
items.add("Apple");
items.add("Banana");
items.add("Pineapple");

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4. Specify the layout that we want for our list items

MyAdapter adapter = new MyAdapter(this, R.layout.simple_list_item_1, items);

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5. Plug our Adapter with our declared Listview

ListView listView = (ListView) findViewById(R.id.my_list);
listview.setAdapter(adapter);

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Done!

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ListViewPractice

• https://github.com/futabooo/ListViewPractice

RecyclerView ← NEW!!

• https://developer.android.com/training/material/lists-cards.html
• http://sys1yagi.hatenablog.com/entry/2015/01/09/090000

couples-date.png

couples-notification.png

ListViewAndAdapter.pdf

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