MainActivity.java Source code

Introduction

Here is the source code for MainActivity.java

Source

import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.ListAdapter;
import android.widget.ListView;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class MainActivity extends AppCompatActivity {

    SwipeRefreshLayout mSwipeRefreshLayout;
    ListView mListView;
    List mArrayList = new ArrayList<>();
    private int mRefreshCount = 0;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mSwipeRefreshLayout = (SwipeRefreshLayout) findViewById(R.id.swipeRefresh);
        mSwipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
            @Override
            public void onRefresh() {
                refreshList();
            }
        });

        mListView = (ListView) findViewById(android.R.id.list);
        final String[] countries = new String[] { "China", "France", "Germany", "India", "Russia", "United Kingdom",
                "United States" };
        mArrayList = new ArrayList<String>(Arrays.asList(countries));
        ListAdapter countryAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1,
                mArrayList);
        mListView.setAdapter(countryAdapter);
    }

    private void refreshList() {
        mRefreshCount++;
        mArrayList.add("Refresh: " + mRefreshCount);
        ListAdapter countryAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1,
                mArrayList);
        mListView.setAdapter(countryAdapter);
        mSwipeRefreshLayout.setRefreshing(false);
    }
}