[안드로이드] 데이터를 처리하는 동안 progressDialog 표시하기

package com.eunchul.zipcode;

import java.util.ArrayList;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.AdapterView.OnItemClickListener;

public class ZipcodeFinderActivity extends Activity {

	ListView zipcodeListView;
	ArrayAdapter zipcodeArrayAdapter;
	ArrayList zipcodes;

	ProgressDialog progressDialog;

	private Handler handler = new Handler();

	final private int PROGRESS_DIALOG = 0;
	final private int ZIPCODE_DIALOG = 21;
	Zipcode selectedZipcode;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        //final EditText keyword = (EditText)findViewById(R.id.keyword);
        final Button searchButton = (Button)findViewById(R.id.search_button);
        zipcodeListView = (ListView)findViewById(R.id.zipcode_list_view);

        searchButton.setOnClickListener(new View.OnClickListener() {
			@Override
			public void onClick(View v) {
				Thread thread = new Thread(null, getZipcodes);
				thread.start();
				showDialog(PROGRESS_DIALOG);
			}
		});

        zipcodeListView.setOnItemClickListener(new OnItemClickListener() {
        	public void onItemClick(AdapterView _av, View _v, int _index, long arg3) {
        		selectedZipcode = zipcodes.get(_index);

        		Log.d(this.getClass().getName(), selectedZipcode.getAddress());
        		Log.d(this.getClass().getName(), selectedZipcode.getZipcode());

        		showDialog(ZIPCODE_DIALOG);
        	}
        });

    }

    private Runnable getZipcodes = new Runnable() {
    	public void run() {
    		try {
		    	final EditText keyword = (EditText)findViewById(R.id.keyword);

		    	Log.d("getZipcodes", "executed...");

		    	ZipcodeFactory zf = new ZipcodeFactory();
		    	zipcodes = zf.search(keyword.getText().toString());

		    	handler.post(updateResults);

    		} catch (Exception e) {
    			Log.e("getZipcodes", e.toString());
    		}

    	}
    };

    private Runnable updateResults = new Runnable() {
    	public void run () {
	    	if (zipcodes != null) {
	    		Log.d("updateResults", "executed...");
		    	int layoutId = android.R.layout.simple_list_item_1;

		    	zipcodeArrayAdapter = new ArrayAdapter(ZipcodeFinderActivity.this, layoutId, zipcodes);
		    	zipcodeListView.setAdapter(zipcodeArrayAdapter);
	    	} else {
	    		showNotFoundZipcodes();
	    	}
    		progressDialog.dismiss();
    		ZipcodeFinderActivity.this.removeDialog(PROGRESS_DIALOG);
    	}
    };

    private void showNotFoundZipcodes() {
    	Toast toast = Toast.makeText(this, "Not found", Toast.LENGTH_SHORT);
    	toast.show();
    }

    @Override
    protected Dialog onCreateDialog (int id) {
    	switch (id) {
    	case (PROGRESS_DIALOG):
    		progressDialog = new ProgressDialog(this);
    		progressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
    		progressDialog.setMessage("Now loading..");
    		return progressDialog;

    	case (ZIPCODE_DIALOG):
    		LayoutInflater li = LayoutInflater.from(this);
    		View zipcodeDialogView = li.inflate(R.layout.zipcode_dialog, null);

    		AlertDialog.Builder zipcodeDialog = new AlertDialog.Builder(this);
    		zipcodeDialog.setTitle("Detail");
    		zipcodeDialog.setView(zipcodeDialogView);

    		return zipcodeDialog.create();
    	}
    	return null;
    }

    @Override
    protected void onPrepareDialog (int id, Dialog dialog) {
    	switch (id) {
    	case(ZIPCODE_DIALOG):
    		AlertDialog zipcodeDialog = (AlertDialog)dialog;

    		zipcodeDialog.setTitle(selectedZipcode.getZipcode());

    		TextView tvAddress = (TextView)zipcodeDialog.findViewById(R.id.dialog_address);
    		TextView tvZipcode = (TextView)zipcodeDialog.findViewById(R.id.dialog_zipcode);

    		tvAddress.setText(this.getString(R.string.zipcode_address) + " " + selectedZipcode.getAddress());
    		tvZipcode.setText(this.getString(R.string.zipcode_zipcode) + " " + selectedZipcode.getZipcode());

    		break;
    	}
    }

}