ActionBarActivity of “android-support-v7-appcompat” and ListActivity in Same activity

Question

How to use ActionBarActivity of \"android-support-v7-appcompat\" in the activity which Extends the ListActivity.

For Example I have an Activity

publ         


        

Answer 1

This solution is based on the accepted solution by @patrick. Here is the full code:

First the XML layout file activity_main.xml. Notice that I have an ListView with ID entryList

Next is my own ActionBarListActivity. You'd notice some changes. I wanted to make it generic and reusable as possible.

package com.example.api;

import android.support.v7.app.ActionBarActivity;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.HeaderViewListAdapter;
import android.widget.ListAdapter;
import android.widget.ListView;

public abstract class ActionBarListActivity extends ActionBarActivity {

    private final class ListOnItemClickListener implements OnItemClickListener {

        public void onItemClick(AdapterView lv, View v, int position, long id) {
            onListItemClick((ListView) lv, v, position, id);
            // String str = ((TextView) arg1).getText().toString();
            // Toast.makeText(getBaseContext(), str,
            // Toast.LENGTH_LONG).show();
            // Intent intent = new Intent(getBaseContext(),
            // your_new_Intent.class);
            // intent.putExtra("list_view_value", str);
            // startActivity(intent);
        }
    }

    private ListView mListView;

    protected ListView getListView() {

        if (mListView == null) {
            initListView();
        }
        return mListView;
    }

    private void initListView() {
        mListView = (ListView) findViewById(getListViewId());
        if (mListView == null) {
            throw new RuntimeException(
                    "ListView cannot be null. Please set a valid ListViewId");
        }

        mListView.setOnItemClickListener(new ListOnItemClickListener());
    }

    protected abstract int getListViewId();

    protected void setListAdapter(ListAdapter adapter) {
        getListView().setAdapter(adapter);
    }

    protected void onListItemClick(ListView lv, View v, int position, long id) {
        // No default functionality. To override
    }

    protected ListAdapter getListAdapter() {
        ListAdapter adapter = getListView().getAdapter();
        if (adapter instanceof HeaderViewListAdapter) {
            return ((HeaderViewListAdapter) adapter).getWrappedAdapter();
        } else {
            return adapter;
        }
    }
}

Next is my MainActivity extending the above class.

package com.example;

import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

import com.example.api.ActionBarListActivity;

public class MainActivity extends ActionBarListActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        String[] values = new String[] { "Android", "iPhone", "WindowsMobile",
                "Blackberry", "WebOS", "Ubuntu", "Windows7", "Max OS X",
                "Linux", "OS/2" };
        ArrayAdapter adapter = new ArrayAdapter(this,
                android.R.layout.simple_list_item_1, values);
        setListAdapter(adapter);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }

    @Override
    protected void onListItemClick(ListView l, View v, int position, long id) {
        Log.d("click", "Position click " + position);
        String item = (String) getListAdapter().getItem(position);
        Toast.makeText(this, item + " selected", Toast.LENGTH_LONG).show();
    }

    @Override
    protected int getListViewId() {
        return R.id.entryList;
    }
}

Basically, by overriding onListItemClick() you can say what to do when user accepts something.

Let me know your thoughts/issues in the comments.

Cheers