download Image From URL - Android java.net

Android examples for java.net:URL

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Description

download Image From URL

Demo Code

import java.io.File;

import android.app.DownloadManager;
import android.content.Context;
import android.database.Cursor;
import android.net.Uri;
import android.os.Environment;

public class Main {

  private static String IMAGEPATH = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS)
      .toString() + File.separator;

  public static void downloadImageFromURL(Context context, String fileName, String url) {

    final DownloadManager manager = (DownloadManager) context.getSystemService(Context.DOWNLOAD_SERVICE);
    DownloadManager.Request request = new DownloadManager.Request(Uri.parse(url));

    if (checkFileExist(fileName, IMAGEPATH)) {
      File file = new File(IMAGEPATH + fileName);
      file.delete();//from w  w  w.j  av a 2 s  .  c om
    }
    request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, fileName);
    final long downloadId = manager.enqueue(request);
    try {
      new Thread(new Runnable() {
        @Override
        public void run() {
          boolean downloading = true;
          while (downloading) {

            DownloadManager.Query q = new DownloadManager.Query();
            q.setFilterById(downloadId);

            Cursor cursor = manager.query(q);
            cursor.moveToFirst();
            int bytes_downloaded = cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_BYTES_DOWNLOADED_SO_FAR));
            int bytes_total = cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_TOTAL_SIZE_BYTES));
            /// calculate download progress status
            final double dl_progress = bytes_total != 0 ? (int) ((bytes_downloaded * 100l) / bytes_total) : 0;
            if (cursor
                .getInt(cursor.getColumnIndex(DownloadManager.COLUMN_STATUS)) == DownloadManager.STATUS_SUCCESSFUL) {
              downloading = false;
            }
            cursor.close();
          }
        }
      });

    } catch (Exception e) {
      e.printStackTrace();
    }
  }

  public static boolean checkFileExist(String fileName, String PATH) {

    File file = new File(PATH + fileName);
    if (file.exists()) {
      return true;
    } else
      return false;
  }

}

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