Uploading audio, video or image files from Android to php server.

本文介绍了一种在Android中上传媒体文件(如图片、音频或视频)的方法。通过示例代码展示了如何从图库选择文件并将其发送到服务器,同时提供了服务器端PHP处理脚本。

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In one of the previous posts I have shown one method to upload an image in android.

Here is another method to upload a media file like images,audio or video in android.
Here is the main java file that does the upload.
Here I am trying to open audio from the gallery. However you can change it to image or video according to your need.
The code for upload will not change since we change only the code for opening the gallery. We use only the path of the selected file whether it is image or video or audio to upload.

package pack.coderzheaven;
 
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.HashMap;
import android.app.Activity;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.util.Log;
 
public class UploadAudioDemo extends Activity {
 
     private static final int SELECT_AUDIO = 2;
     String selectedPath = "";
 
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
 
        openGalleryAudio();
    }
 
    public void openGalleryAudio(){
 
     Intent intent = new Intent();
        intent.setType("audio/*");
        intent.setAction(Intent.ACTION_GET_CONTENT);
        startActivityForResult(Intent.createChooser(intent,"Select Audio "), SELECT_AUDIO);
   }
 
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
 
         if (resultCode == RESULT_OK) {
 
             if (requestCode == SELECT_AUDIO)
             {
               System.out.println("SELECT_AUDIO");
                 Uri selectedImageUri = data.getData();
                 selectedPath = getPath(selectedImageUri);
               System.out.println("SELECT_AUDIO Path : " + selectedPath);
               doFileUpload();
             }
 
         }
     }
 
    public String getPath(Uri uri) {
         String[] projection = { MediaStore.Images.Media.DATA };
         Cursor cursor = managedQuery(uri, projection, null, null, null);
         int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
         cursor.moveToFirst();
         return cursor.getString(column_index);
     }
 
    private void doFileUpload(){
        HttpURLConnection conn = null;
        DataOutputStream dos = null;
        DataInputStream inStream = null;
        String lineEnd = "rn";
        String twoHyphens = "--";
        String boundary =  "*****";
        int bytesRead, bytesAvailable, bufferSize;
        byte[] buffer;
        int maxBufferSize = 1*1024*1024;
        String responseFromServer = "";
        String urlString = "http://your_website.com/upload_audio_test/upload_audio.php";
        try
        {
         //------------------ CLIENT REQUEST
        FileInputStream fileInputStream = new FileInputStream(new File(selectedPath) );
         // open a URL connection to the Servlet
         URL url = new URL(urlString);
         // Open a HTTP connection to the URL
         conn = (HttpURLConnection) url.openConnection();
         // Allow Inputs
         conn.setDoInput(true);
         // Allow Outputs
         conn.setDoOutput(true);
         // Don't use a cached copy.
         conn.setUseCaches(false);
         // Use a post method.
         conn.setRequestMethod("POST");
         conn.setRequestProperty("Connection", "Keep-Alive");
         conn.setRequestProperty("Content-Type", "multipart/form-data;boundary="+boundary);
         dos = new DataOutputStream( conn.getOutputStream() );
         dos.writeBytes(twoHyphens + boundary + lineEnd);
         dos.writeBytes("Content-Disposition: form-data; name="uploadedfile";filename="" + selectedPath + """ + lineEnd);
         dos.writeBytes(lineEnd);
         // create a buffer of maximum size
         bytesAvailable = fileInputStream.available();
         bufferSize = Math.min(bytesAvailable, maxBufferSize);
         buffer = new byte[bufferSize];
         // read file and write it into form...
         bytesRead = fileInputStream.read(buffer, 0, bufferSize);
         while (bytesRead > 0)
         {
          dos.write(buffer, 0, bufferSize);
          bytesAvailable = fileInputStream.available();
          bufferSize = Math.min(bytesAvailable, maxBufferSize);
          bytesRead = fileInputStream.read(buffer, 0, bufferSize);
         }
         // send multipart form data necesssary after file data...
         dos.writeBytes(lineEnd);
         dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
         // close streams
         Log.e("Debug","File is written");
         fileInputStream.close();
         dos.flush();
         dos.close();
        }
        catch (MalformedURLException ex)
        {
             Log.e("Debug", "error: " + ex.getMessage(), ex);
        }
        catch (IOException ioe)
        {
             Log.e("Debug", "error: " + ioe.getMessage(), ioe);
        }
        //------------------ read the SERVER RESPONSE
        try {
              inStream = new DataInputStream ( conn.getInputStream() );
              String str;
 
              while (( str = inStream.readLine()) != null)
              {
                   Log.e("Debug","Server Response "+str);
              }
              inStream.close();
 
        }
        catch (IOException ioex){
             Log.e("Debug", "error: " + ioex.getMessage(), ioex);
        }
      }
}



Now the server side , the code is written in Php.
<?php
// Where the file is going to be placed
$target_path= "uploads/";
 
/* Add the original filename to our target path.
Result is "uploads/filename.extension" */
$target_path= $target_path. basename($_FILES['uploadedfile']['name']);
 
if(move_uploaded_file($_FILES['uploadedfile']['tmp_name'],$target_path)) {
    echo"The file ". basename($_FILES['uploadedfile']['name']).
    " has been uploaded";
}else{
    echo"There was an error uploading the file, please try again!";
    echo"filename: " .  basename($_FILES['uploadedfile']['name']);
    echo"target_path: " .$target_path;
}
?>

Things to keep in mind:
1. Make sure your server is running.
2. Your server file path should be right.
3. Check your folder write permission in the server.


### Media Entity in Software Development and Data Modeling In the context of software development and data modeling, a **media entity** refers to an object that represents multimedia content such as images, videos, audio files, or other types of media within a system. This concept is crucial when designing applications that handle rich media content. #### Characteristics of a Media Entity A media entity typically includes several attributes: - **Identifier**: A unique identifier for each piece of media. - **Type**: Specifies whether the media is an image, video, document, etc. - **Metadata**: Additional information about the media file including creation date, size, format, duration (for videos), resolution, tags, descriptions, and more. - **Storage Location**: Path or URL where the actual binary data resides on disk or cloud storage services like AWS S3 buckets[^1]. Media entities play significant roles not only in web-based platforms but also mobile apps designed around sharing user-generated content. For instance, social networks heavily rely on robust models supporting various forms of digital assets uploaded by users daily. When implementing these features programmatically using languages like Python, developers often leverage libraries specifically tailored towards interacting with APIs provided by popular online services which facilitate uploading/downloading resources while ensuring proper handling according to best practices outlined in relevant documentation[^5]. ```python import tweepy auth = tweepy.OAuthHandler(consumer_key, consumer_secret) api = tweepy.API(auth) # Example function to upload media to Twitter's servers before posting it along tweets def post_tweet_with_image(image_path, tweet_text): try: response = api.media_upload(filename=image_path) status = api.update_status(status=tweet_text, media_ids=[response.media_id_string]) print(f"Tweet posted successfully! Status ID: {status.id}") except Exception as e: print(e) ```
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