Dialog의 사용(3):progressDialog

package com.example.androidtest;

import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
import android.app.ProgressDialog;
import android.os.Handler;
import android.os.Message;

public class MainActivity extends Activity {
	
	CharSequence[] items = {"Google", "Apple", "Microsoft"};
	boolean[] itemsChecked = new boolean[items.length];
	
	private ProgressDialog _progressDialog;
	private int _progress = 0;
	private Handler _progressHandler;
	
	public void onCreate(Bundle savedInstanceState)
	{
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		Button btn = (Button)findViewById(R.id.btn_dialog);
		btn.setOnClickListener(new Button.OnClickListener(){
			public void onClick(View v) {
				showDialog(1);
				_progress = 0;
				_progressDialog.setProgress(0);
				_progressHandler.sendEmptyMessage(0);
			}
		});
		
		_progressHandler = new Handler() {
			public void handleMessage(Message msg) {
				super.handleMessage(msg);
				if (_progress >= 100) {
					_progressDialog.dismiss();
				} else {
					_progress++;
					_progressDialog.incrementProgressBy(1);
					_progressHandler.sendEmptyMessageDelayed(0, 100);
				}
			}
		};
	}	
	
	protected Dialog onCreateDialog(int id) 
	{
		switch (id) {
		case 0:
			return new AlertDialog.Builder(this)
			.setIcon(R.drawable.ic_launcher)
			.setTitle("This is a dialog with some simple text...")
			.setPositiveButton("OK", new DialogInterface.OnClickListener() {
				
				@Override
				public void onClick(DialogInterface dialog, int which) {
					// TODO Auto-generated method stub
					Toast.makeText(getBaseContext(), "OK clicked!", Toast.LENGTH_SHORT).show();
				}
			})
			.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
				
				@Override
				public void onClick(DialogInterface dialog, int which) {
					// TODO Auto-generated method stub
					Toast.makeText(getBaseContext(), "Cancel clicked!", Toast.LENGTH_SHORT).show();
				}
			})
			.setMultiChoiceItems(items, itemsChecked, new DialogInterface.OnMultiChoiceClickListener() {
				
				@Override
				public void onClick(DialogInterface dialog, int which, boolean isChecked) {
					// TODO Auto-generated method stub
					Toast.makeText(getBaseContext(), items[which] + (isChecked ? " checked!" : " unchecked!"), Toast.LENGTH_SHORT).show();
				}
			}).create();
		case 1:
			_progressDialog = new ProgressDialog(this);
			_progressDialog.setIcon(R.drawable.ic_launcher);
			_progressDialog.setTitle("Downloading files...");
			_progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
			_progressDialog.setButton(DialogInterface.BUTTON_POSITIVE, "Hide", new DialogInterface.OnClickListener() {
				
				@Override
				public void onClick(DialogInterface dialog, int which) {
					// TODO Auto-generated method stub
					Toast.makeText(getBaseContext(), "Hide clicked!", Toast.LENGTH_SHORT).show();
				}
			});
			_progressDialog.setButton(DialogInterface.BUTTON_NEGATIVE, "Cancel", new DialogInterface.OnClickListener() {
				
				@Override
				public void onClick(DialogInterface dialog, int which) {
					// TODO Auto-generated method stub
					Toast.makeText(getBaseContext(), "Cancel clicked!", Toast.LENGTH_SHORT).show();
				}
			});
			
			return _progressDialog;
		}
		return null;
	}
	
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >
<TextView  
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="@string/hello_world" />    
<Button
    android:id="@+id/btn_dialog"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="Click to display a dialog" />
</LinearLayout>