CODEWITHSUNDEEP
android
androidevil
androidevil

Reputation: 9171

How to fill a ListView with a string-array?

I want to show these itens at my ListView

<string-array name="bookmark_titles">
    <item>Google</item>
    <item>Bing</item>
    <item>Gmail</item>
</string-array>

I have a method that gets these values.

public static Collection getBookmarks(Context context) {
    Collection bookmarks = new Collection();

    String[] titles  = context.getResources().getStringArray(R.array.bookmark_titles);

    for (int i = 0; i < titles.length; i ++) {
        bookmarks.add(titles[i]);
    }

    return bookmarks;
}

How can I call the method getBookmarks in my main.java to fill the ListView?

I have already created a ListView. It is:

<ListView
    android:id="@+id/my_listView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:divider="#ECECEC"
    android:dividerHeight="1sp" />

main.java I am trying to do something like this:

ListView lv = (ListView) findViewById(R.id.my_listView);

ArrayList<Bookmark> my_array = BookmarkCollection.getTestBookmarks(context);
adapter = new ArrayAdapter(this, android.R.layout.simple_list_item_1, my_array);    
lv.setAdapter(adapter);

Upvotes: 11

Views: 25855

Answers (2)

wsanville
wsanville

Reputation: 37506

You can create your adapter with a one liner, check out the static method ArrayAdapter createFromResource(Context context, int textArrayResId, int textViewResId)

The first argument will probably be your Activity, the second is R.array.bookmark_titles, and the third is a layout to use.

To clarify based on the comments, the method accepts int, which is exactly what the constants in your generated R class are stored as.

Here's a complete example, assuming this is being called from an Activity:

ArrayAdapter<CharSequence> aa = ArrayAdapter.createFromResource(this, R.array.bookmark_titles, android.R.layout.simple_list_item_1);
myListView.setAdapter(aa);

In this case, android.R.layout.simple_list_item_1 refers to an XML layout that is provided by the Android SDK. You can change this if needed.

Upvotes: 16

Noworks
Noworks

Reputation: 31

You can do this with an ArrayAdapter and have it use either an Array or a List to give it data

lv.setAdatper(new ArrayAdapter<String>(context, R.layout.some_layout_to_use, R.id.some_textview_in_layout, listData);

Upvotes: 3

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