Android Open Source - mobile-android Main Activity

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License

The source code is released under:
MIT License
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Java Source Code

package com.manyconf.conference;
//from ww  w. ja v a  2  s .  c  o  m
import android.app.Activity;
import android.app.Application;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.content.LocalBroadcastManager;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.Toast;

import com.crashlytics.android.Crashlytics;
import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;

public class MainActivity extends Activity implements View.OnClickListener {

    private Button reloadButton;
    private ListView mainListView;
    private ArrayAdapter mArrayAdapter;
    private Toast mToast;


    // Hashmap for ListView
    private LinkedHashMap<Integer, ConferenceModel> conferenceList;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        Log.d("manyconf.main", "onCreate()");
        super.onCreate(savedInstanceState);
        Crashlytics.start(this);


        requestWindowFeature(Window.FEATURE_NO_TITLE);  // Remove titlebar for this activity

        setContentView(R.layout.activity_main);

        this.reloadButton = (Button)this.findViewById(R.id.reload);
        this.reloadButton.setOnClickListener(this);
        mToast = Toast.makeText(this, "" , Toast.LENGTH_LONG);
//        this.reloadButton.setVisibility(View.GONE);

        // Kick off network action. Upon receiving an answer, forward to next screen.
        // See also:
        // http://stackoverflow.com/questions/2704084/how-to-launch-an-activity-without-a-ui
        this.fetchConferences();
    }

    @Override
    public void onClick(View v) {
        Log.d("manyconf.main", "onClick()");
        this.fetchConferences();
    }

    public void fetchConferences() {
        Log.d("manyconf.main", "fetchConferences()");
//        reloadButton.setVisibility(View.GONE);
        mToast.setText("Getting list of conferences");
        mToast.show();
        ((ConferenceApplication)getApplication()).fetchConferences();
    }

    @Override
    protected void onResume() {
        super.onResume();
        Log.d("manyconf.main", "onResume()");
        LocalBroadcastManager.getInstance(this).registerReceiver(mMessageReceiver,
                new IntentFilter("SERVICE_HANDLER_RESULT"));
        this.fetchConferences();
    }

    @Override
    protected void onPause() {
        Log.d("manyconf.main", "onPause()");
        // Unregister since the activity is about to be closed.
        LocalBroadcastManager.getInstance(this).unregisterReceiver(mMessageReceiver);
        super.onPause();
    }

    // Our handler will be called whenever the ConferenceBuilder gets results.
    private BroadcastReceiver mMessageReceiver = new BroadcastReceiver() {

        @Override
        public void onReceive(Context context, Intent intent) {
            Log.d("manyconf.main", "onReceive()");

            String err = ((ConferenceApplication) getApplication()).getLastError();
            if (err != null) {
                String msg = String.format("Error: %s", err);
                Log.d("manyconf.main", msg);
                mToast.setText(msg);
                mToast.show();
                reloadButton.setVisibility(View.VISIBLE);
            } else {
                conferenceList = ((ConferenceApplication) getApplication()).getConferenceList();
                if(conferenceList == null) {
                    mToast.setText("Internal error: no conferences received");
                    mToast.show();
                } else {
                    Log.d("manyconf.main", String.format("Got %d conferences", conferenceList.size()));
                    mToast.cancel();
                    if(Const.singleConfApp) {
                        Intent detailIntent = new Intent(context, ConferenceDetailActivity.class);
                        detailIntent.putExtra("conferenceListID", Const.singleConfAppID);
                        startActivity(detailIntent);
                    } else {
                        Intent i = new Intent(context, ConferenceListActivity.class);
                        startActivity(i);
                    }
                }
            }
        }
    };
}
Java Source Code List
