com.download.android.DownloadActivity.java Source code

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Here is the source code for com.download.android.DownloadActivity.java

Source

package com.download.android;

/*
 * Copyright (C) 2013 Surviving with Android (http://www.survivingwithandroid.com)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.io.BufferedInputStream;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;

import com.example.loadimage.R;

import android.os.AsyncTask;
import android.os.Bundle;
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.view.MenuItem;
import android.widget.ImageView;

public class DownloadActivity extends Activity {

    private MenuItem item;
    private String url = "http://192.168.13.129:8888/TestAndroid/DownloadServlet";
    private String name = "logo.png";
    ImageView imgView;

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

        imgView = (ImageView) findViewById(R.id.imgView1);
        String[] params = new String[] { url, name };

        SendHttpRequestTask task = new SendHttpRequestTask();
        task.execute(params);
    }

    private class SendHttpRequestTask extends AsyncTask<String, Void, byte[]> {

        @Override
        protected byte[] doInBackground(String... params) {
            String url = params[0];
            String name = params[1];

            HttpClient client = new DefaultHttpClient();
            HttpPost post = new HttpPost(url);
            List<NameValuePair> paramList = new ArrayList<NameValuePair>();
            paramList.add(new BasicNameValuePair("name", name));

            byte[] data = null;

            try {
                post.setEntity(new UrlEncodedFormEntity(paramList)); // We add the Params to the Post request
                HttpResponse resp = client.execute(post);
                InputStream is = resp.getEntity().getContent();
                int contentSize = (int) resp.getEntity().getContentLength();
                System.out.println("Content size [" + contentSize + "]");
                BufferedInputStream bis = new BufferedInputStream(is, 512);

                data = new byte[contentSize];
                int bytesRead = 0;
                int offset = 0;

                while (bytesRead != -1 && offset < contentSize) {
                    bytesRead = bis.read(data, offset, contentSize - offset);
                    offset += bytesRead;
                }

                System.out.println("Data [" + data.length + "]");

            } catch (Throwable t) {
                // Handle error here
                t.printStackTrace();
            }

            return data;
        }

        @Override
        protected void onPostExecute(byte[] result) {
            Bitmap img = BitmapFactory.decodeByteArray(result, 0, result.length);
            imgView.setImageBitmap(img);
            item.setActionView(null);

        }

    }

}