C# Programming Tutorial(8920128728): Android Upload Image using Android Upload Service

Creating Server Side Codes for Android Upload Image

The first thing we need is to create our server side web services. For server side I am using PHP and MySQL. And for this I am using Wamp server. You can still use xampp or any other application. Now follow the steps to create your web service to handle the file upload.

Go to localhost/phpmyadmin and create the following database table.

android upload image database.jpg

Now inside your server’s root directory (c:/wamp/www) and create a new folder. I created AndroidUploadImage.
Inside the folder create a folder named uploads, in this folder we will save all the uploaded images.
Create a file named dbDetails.php and write the following code.

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<?php 
 define('HOST','localhost');
 define('USER','root');
 define('PASS','');
 define('DB','db_images');
 

Now create a file named upload.php and write the following code.

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<?php 
 
 //importing dbDetails file 
 require_once 'dbDetails.php';
 
 //this is our upload folder 
 $upload_path = 'uploads/';
 
 //Getting the server ip 
 $server_ip = gethostbyname(gethostname());
 
 //creating the upload url 
 $upload_url = 'http://'.$server_ip.'/AndroidImageUpload/'.$upload_path; 
 
 //response array 
 $response = array(); 
 
 
 if($_SERVER['REQUEST_METHOD']=='POST'){
 
 //checking the required parameters from the request 
 if(isset($_POST['name']) and isset($_FILES['image']['name'])){
 
 //connecting to the database 
 $con = mysqli_connect(HOST,USER,PASS,DB) or die('Unable to Connect...');
 
 //getting name from the request 
 $name = $_POST['name'];
 
 //getting file info from the request 
 $fileinfo = pathinfo($_FILES['image']['name']);
 
 //getting the file extension 
 $extension = $fileinfo['extension'];
 
 //file url to store in the database 
 $file_url = $upload_url . getFileName() . '.' . $extension;
 
 //file path to upload in the server 
 $file_path = $upload_path . getFileName() . '.'. $extension; 
 
 //trying to save the file in the directory 
 try{
 //saving the file 
 move_uploaded_file($_FILES['image']['tmp_name'],$file_path);
 $sql = "INSERT INTO `db_images`.`images` (`id`, `url`, `name`) VALUES (NULL, '$file_url', '$name');";
 
 //adding the path and name to database 
 if(mysqli_query($con,$sql)){
 
 //filling response array with values 
 $response['error'] = false; 
 $response['url'] = $file_url; 
 $response['name'] = $name;
 }
 //if some error occurred 
 }catch(Exception $e){
 $response['error']=true;
 $response['message']=$e->getMessage();
 } 
 //displaying the response 
 echo json_encode($response);
 
 //closing the connection 
 mysqli_close($con);
 }else{
 $response['error']=true;
 $response['message']='Please choose a file';
 }
 }
 
 /*
 We are generating the file name 
 so this method will return a file name for the image to be upload 
 */
 function getFileName(){
 $con = mysqli_connect(HOST,USER,PASS,DB) or die('Unable to Connect...');
 $sql = "SELECT max(id) as id FROM images";
 $result = mysqli_fetch_array(mysqli_query($con,$sql));
 
 mysqli_close($con);
 if($result['id']==null)
 return 1; 
 else 
 return ++$result['id']; 
 }
 

Now test your script. You can use a rest client to test it I am using POSTMAN. See the below screenshot.

android upload image web service

If you are seeing the above response then. Your script is working fine. You can check the database and upload folder which you have created.

android upload image database — Database

So its working absolutely fine. Now lets move ahead and create a android project.

Creating Android Studio Project

We are done with the server side coding for this Android Upload Image Example. Now lets code our android application. Follow the steps given.

Create a Android Studio Project.
Create a class named Constants.java and write the following code. The following class contains the path to our php file which we created. You are seeing two strings. The second it the path to the file we will create at the end of this post.

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package net.simplifiedcoding.androidimageupload;
 
/**
 * Created by Belal on 6/10/2016.
 */
public class Constants {
    public static final String UPLOAD_URL = "http://192.168.94.1/AndroidImageUpload/upload.php";
    public static final String IMAGES_URL = "http://192.168.94.1/AndroidImageUpload/getImages.php";
}
 

You need to change the IP according to your system. To know the IP you can use IPCONFIG command in command prompt (windows user).
Now we need to add android upload service to our project.

Adding Android Upload Service

Go to your app level build.gradle file and add the following line inside dependencies block and sync your project.

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dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.4.0'
 
    //Add this line 
    compile 'net.gotev:uploadservice:2.1'
}
 

Come to activity_main.xml and write the following xml code.

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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="net.simplifiedcoding.androidimageupload.MainActivity">
 
 
    <LinearLayout
        android:gravity="center_horizontal"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
 
        <Button
            android:id="@+id/buttonChoose"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Select" />
 
        <EditText
            android:id="@+id/editTextName"
            android:hint="Name For Image"
            android:layout_weight="1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
 
        <Button
            android:id="@+id/buttonUpload"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Upload" />
 
    </LinearLayout>
 
    <ImageView
        android:id="@+id/imageView"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />
 
 
</LinearLayout>
 

The above code will generate the following layout.

android upload image example

As you can see we have two buttons, one to select image and other to upload image. We also have an EditText to enter the name for the image.
Now come to MainActivity.java and write the following code.

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package net.simplifiedcoding.androidimageupload;
 
import android.Manifest;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.Toast;
 
import net.gotev.uploadservice.MultipartUploadRequest;
import net.gotev.uploadservice.UploadNotificationConfig;
 
import java.io.IOException;
import java.util.UUID;
 
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
 
    //Declaring views
    private Button buttonChoose;
    private Button buttonUpload;
    private ImageView imageView;
    private EditText editText;
 
    //Image request code
    private int PICK_IMAGE_REQUEST = 1;
 
    //storage permission code
    private static final int STORAGE_PERMISSION_CODE = 123;
 
    //Bitmap to get image from gallery
    private Bitmap bitmap;
 
    //Uri to store the image uri
    private Uri filePath;
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
 
        //Requesting storage permission
        requestStoragePermission();
 
        //Initializing views
        buttonChoose = (Button) findViewById(R.id.buttonChoose);
        buttonUpload = (Button) findViewById(R.id.buttonUpload);
        imageView = (ImageView) findViewById(R.id.imageView);
        editText = (EditText) findViewById(R.id.editTextName);
 
        //Setting clicklistener
        buttonChoose.setOnClickListener(this);
        buttonUpload.setOnClickListener(this);
    }
 
 
    /*
    * This is the method responsible for image upload
    * We need the full image path and the name for the image in this method
    * */
    public void uploadMultipart() {
        //getting name for the image
        String name = editText.getText().toString().trim();
 
        //getting the actual path of the image
        String path = getPath(filePath);
 
        //Uploading code
        try {
            String uploadId = UUID.randomUUID().toString();
 
            //Creating a multi part request
            new MultipartUploadRequest(this, uploadId, Constants.UPLOAD_URL)
                    .addFileToUpload(path, "image") //Adding file
                    .addParameter("name", name) //Adding text parameter to the request
                    .setNotificationConfig(new UploadNotificationConfig())
                    .setMaxRetries(2)
                    .startUpload(); //Starting the upload
 
        } catch (Exception exc) {
            Toast.makeText(this, exc.getMessage(), Toast.LENGTH_SHORT).show();
        }
    }
 
 
    //method to show file chooser
    private void showFileChooser() {
        Intent intent = new Intent();
        intent.setType("image/*");
        intent.setAction(Intent.ACTION_GET_CONTENT);
        startActivityForResult(Intent.createChooser(intent, "Select Picture"), PICK_IMAGE_REQUEST);
    }
 
    //handling the image chooser activity result
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
 
        if (requestCode == PICK_IMAGE_REQUEST && resultCode == RESULT_OK && data != null && data.getData() != null) {
            filePath = data.getData();
            try {
                bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), filePath);
                imageView.setImageBitmap(bitmap);
 
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
 
    //method to get the file path from uri
    public String getPath(Uri uri) {
        Cursor cursor = getContentResolver().query(uri, null, null, null, null);
        cursor.moveToFirst();
        String document_id = cursor.getString(0);
        document_id = document_id.substring(document_id.lastIndexOf(":") + 1);
        cursor.close();
 
        cursor = getContentResolver().query(
                android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
                null, MediaStore.Images.Media._ID + " = ? ", new String[]{document_id}, null);
        cursor.moveToFirst();
        String path = cursor.getString(cursor.getColumnIndex(MediaStore.Images.Media.DATA));
        cursor.close();
 
        return path;
    }
 
 
    //Requesting permission
    private void requestStoragePermission() {
        if (ContextCompat.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED)
            return;
 
        if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.READ_EXTERNAL_STORAGE)) {
            //If the user has denied the permission previously your code will come to this block
            //Here you can explain why you need this permission
            //Explain here why you need this permission
        }
        //And finally ask for the permission
        ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.READ_EXTERNAL_STORAGE}, STORAGE_PERMISSION_CODE);
    }
 
 
    //This method will be called when the user will tap on allow or deny
    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
 
        //Checking the request code of our request
        if (requestCode == STORAGE_PERMISSION_CODE) {
 
            //If permission is granted
            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                //Displaying a toast
                Toast.makeText(this, "Permission granted now you can read the storage", Toast.LENGTH_LONG).show();
            } else {
                //Displaying another toast if permission is not granted
                Toast.makeText(this, "Oops you just denied the permission", Toast.LENGTH_LONG).show();
            }
        }
    }
 
 
    @Override
    public void onClick(View v) {
        if (v == buttonChoose) {
            showFileChooser();
        }
        if (v == buttonUpload) {
            uploadMultipart();
        }
    }
 
 
}
 

Finally add the storage and internet permission on your manifest.

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<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="net.simplifiedcoding.androidimageupload">
 
    <!-- add these permissions --> 
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
 
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
 
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
 
</manifest>
 

Thats it now just run your app.

android upload image example app

Bingo! Its working absolutely fine. Now you may need to fetch the uploaded images.

Fetching the Uploaded Images

To fetch the images inside your server side project, create one more file named getImages.php and write the following code.

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<?php 
 
 //Importing dbdetails file 
 require_once 'dbDetails.php';
 
 //connection to database 
 $con = mysqli_connect(HOST,USER,PASS,DB) or die('Unable to Connect...');
 
 //sql query to fetch all images 
 $sql = "SELECT * FROM images";
 
 //getting images 
 $result = mysqli_query($con,$sql);
 
 //response array 
 $response = array(); 
 $response['error'] = false; 
 $response['images'] = array(); 
 
 //traversing through all the rows 
 while($row = mysqli_fetch_array($result)){
 $temp = array(); 
 $temp['id']=$row['id'];
 $temp['name']=$row['name'];
 $temp['url']=$row['url'];
 array_push($response['images'],$temp);
 }
 //displaying the response 
 echo json_encode($response);
 

This code will give you the following JSON.

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{
   "error":false,
   "images":[
      {
         "id":"1",
         "name":"Belal Khan",
         "url":"http:\/\/192.168.94.1\/AndroidImageUpload\/uploads\/1.jpg"
      },
      {
         "id":"2",
         "name":"Belal",
         "url":"http:\/\/192.168.94.1\/AndroidImageUpload\/uploads\/2.jpg"
      },
      {
         "id":"3",
         "name":"",
         "url":"http:\/\/192.168.94.1\/AndroidImageUpload\/uploads\/3.jpg"
      },
      {
         "id":"4",
         "name":"Belal Khan",
         "url":"http:\/\/192.168.94.1\/AndroidImageUpload\/uploads\/4.jpg"
      }
   ]
}
 

Now you can use the following tutorial to display the images using the above JSON.

C# Programming Tutorial(8920128728)

Friday, 30 December 2022

Android Upload Image using Android Upload Service

Creating Server Side Codes for Android Upload Image

Creating Android Studio Project

Adding Android Upload Service

Fetching the Uploaded Images

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