Android Open Source - android-simpl3r Upload Service

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License

The source code is released under:

Apache License

Java Source Code

/***
 * Copyright (c) 2012 readyState Software Ltd
 * //from w  w  w .j a  va  2  s  .  c o  m
 * 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.
 * 
 */

package com.readystatesoftware.simpl3r.example;

import java.io.File;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.services.s3.AmazonS3Client;
import com.amazonaws.services.s3.model.ProgressEvent;
import com.readystatesoftware.simpl3r.UploadIterruptedException;
import com.readystatesoftware.simpl3r.Uploader;
import com.readystatesoftware.simpl3r.Uploader.UploadProgressListener;

import android.app.IntentService;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.support.v4.app.NotificationCompat;

public class UploadService extends IntentService {

  public static final String ARG_FILE_PATH = "file_path";
  public static final String UPLOAD_STATE_CHANGED_ACTION = "com.readystatesoftware.simpl3r.example.UPLOAD_STATE_CHANGED_ACTION";
  public static final String UPLOAD_CANCELLED_ACTION = "com.readystatesoftware.simpl3r.example.UPLOAD_CANCELLED_ACTION";
  public static final String S3KEY_EXTRA = "s3key";
  public static final String PERCENT_EXTRA = "percent";
  public static final String MSG_EXTRA = "msg";
  
  private static final int NOTIFY_ID_UPLOAD = 1337;
  
  private AmazonS3Client s3Client;
  private Uploader uploader;
  
  private NotificationManager nm;
  
  public UploadService() {
    super("simpl3r-example-upload");
  }
  
  @Override
  public void onCreate() {
    super.onCreate();
    s3Client = new AmazonS3Client(
        new BasicAWSCredentials(getString(R.string.s3_access_key), getString(R.string.s3_secret)));
    nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
    
    IntentFilter f = new IntentFilter();
    f.addAction(UPLOAD_CANCELLED_ACTION);
    registerReceiver(uploadCancelReceiver, f);
  }  

  @Override
  protected void onHandleIntent(Intent intent) {
    
    String filePath = intent.getStringExtra(ARG_FILE_PATH);
    File fileToUpload = new File(filePath);
    final String s3ObjectKey = md5(filePath);
    String s3BucketName = getString(R.string.s3_bucket);
    
    final String msg = "Uploading " + s3ObjectKey + "...";
    
    // create a new uploader for this file
    uploader = new Uploader(this, s3Client, s3BucketName, s3ObjectKey, fileToUpload);

    // listen for progress updates and broadcast/notify them appropriately
    uploader.setProgressListener(new UploadProgressListener() {      
      @Override
      public void progressChanged(ProgressEvent progressEvent,
          long bytesUploaded, int percentUploaded) {
        
        Notification notification = buildNotification(msg, percentUploaded);
        nm.notify(NOTIFY_ID_UPLOAD, notification);
        broadcastState(s3ObjectKey, percentUploaded, msg);
      }
    });

    // broadcast/notify that our upload is starting
    Notification notification = buildNotification(msg, 0);
    nm.notify(NOTIFY_ID_UPLOAD, notification);
    broadcastState(s3ObjectKey, 0, msg);
    
    try {
      String s3Location = uploader.start(); // initiate the upload
      broadcastState(s3ObjectKey, -1, "File successfully uploaded to " + s3Location);
    } catch (UploadIterruptedException uie) {
      broadcastState(s3ObjectKey, -1, "User interrupted");
    } catch (Exception e) {
      e.printStackTrace();
      broadcastState(s3ObjectKey, -1, "Error: " + e.getMessage());
    }
  }
  
  @Override
  public void onDestroy() {
    nm.cancel(NOTIFY_ID_UPLOAD);
    unregisterReceiver(uploadCancelReceiver);
    super.onDestroy();
  }

  private void broadcastState(String s3key, int percent, String msg) {
    Intent intent = new Intent(UPLOAD_STATE_CHANGED_ACTION);
    Bundle b = new Bundle();
    b.putString(S3KEY_EXTRA, s3key);
    b.putInt(PERCENT_EXTRA, percent);
    b.putString(MSG_EXTRA, msg);
    intent.putExtras(b);
    sendBroadcast(intent);
  }

  private Notification buildNotification(String msg, int progress) {  
    NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
    builder.setWhen(System.currentTimeMillis());
    builder.setTicker(msg);
    builder.setContentTitle(getString(R.string.app_name));
    builder.setContentText(msg);
    builder.setSmallIcon(R.drawable.ic_stat_uploading);
    builder.setOngoing(true);
    builder.setProgress(100, progress, false);
    
    Intent notificationIntent = new Intent(this, MainActivity.class);
    notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    PendingIntent contentIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);
    builder.setContentIntent(contentIntent);
    
    return builder.build();
  }
  
  private BroadcastReceiver uploadCancelReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
          if (uploader != null) {
            uploader.interrupt();
          }
        }
    };
  
  private String md5(String s) {
    try {
      // create MD5 Hash
      MessageDigest digest = java.security.MessageDigest.getInstance("MD5");
      digest.update(s.getBytes());
      byte messageDigest[] = digest.digest();

      // create Hex String
      StringBuffer hexString = new StringBuffer();
      for (int i=0; i<messageDigest.length; i++)
        hexString.append(Integer.toHexString(0xFF & messageDigest[i]));
      return hexString.toString();

    } catch (NoSuchAlgorithmException e) {
      e.printStackTrace();
      return null;
    }
  }

}

Java Source Code List

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