package com.apofa.httpAccess;

import java.io.BufferedInputStream;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;

import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;

public class httpAccess extends Activity {
    /** Called when the activity is first created. */
	ImageView displayView;
	Button downloadImage;
	Bitmap bm;
	String imageurl = "http://www.leckerfett.com/napf/andesk.png";
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        downloadImage= (Button)findViewById(R.id.getimage);
        displayView = (ImageView)findViewById(R.id.imageview);
        
        

        downloadImage.setOnClickListener(new Button.OnClickListener() {
	          public void onClick(View v) {
	        	  
	          //this would do in same thread and mean you
	          //have to wait for image - couldn't type in
	          //text field...running on same thread as this activity
	       	  //displayImage(downloadImage(imageurl));
	        	  
	          //This uses Downloader class that runs the downloading
	          //in a different thread giving back control to this
	          //activity so can type in text field.
	          //see definition of inside class Downloader below
	        	 Downloader dm= new Downloader();
	        	 dm.execute(imageurl);  //triggers dm.doInbackground
	        	                        //when this is done will then
	        	                        //call dm.onPostExecute of the 
	        	                        
	          }
	    	});
    }
    public void displayImage(Bitmap bm){
        BitmapDrawable bmdw = new BitmapDrawable(bm);
        displayView.setBackgroundDrawable(bmdw);
    }
    public Bitmap downloadImage(String url){

    	try{
        URL aURL = new URL(url); 
        URLConnection conn = aURL.openConnection(); 
        conn.connect();
        //Log.d("LOADIMAGE","GET STREAM ");
        InputStream is = conn.getInputStream(); 
        //Log.d("LOADIMAGE","BUFFER STREAM");
        /* Buffered is always good for a performance plus. */ 
        BufferedInputStream bis = new BufferedInputStream(is); 
        
        Bitmap bm = BitmapFactory.decodeStream(bis); 
        return bm;
    	}
    	catch(Exception e){
    		Log.d("httpAccess", "message:"+e.toString());
    		return null;
    	}
    }
    //uses workingThread--via AsyncTask
    //  param1 =type of pass in value ,param2= type of progress unit (how much done), param3=type returned
	private class Downloader extends AsyncTask<String, Integer, Bitmap> {
		
		//this method will be run in separate thread in background
		protected Bitmap doInBackground(String... searchKey) { //String... means multiple parameters of String type...i.e. url1,url2,url3
			
			String url = searchKey[0];

			try{
				Log.v("gsearch","gsearch result with AsyncTask");
				return downloadImage(url); //calling now from this new working thread
			}catch(Exception e){
				Log.v("Exception google search","Exception:"+e.getMessage());
				return null;
						
			}
		}		
		protected void onPostExecute(Bitmap resultbm) {
			try{
				displayImage(resultbm);
			}catch(Exception e){
				Log.v("Exception google search","Exception:"+e.getMessage());
						
			}		

	
		}
	}
    
    
}