Android Upload Image using Android Upload Service Using Volley.

1.Create XML View it Contains 2 button upload & Choose an Image view to set 
  selected image to image view an after that upload button to upload on server.

 
<?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:paddingBottom="15dp"
    android:paddingLeft="15dp"
    android:paddingRight="15dp"
    android:paddingTop="15dp"
    android:orientation="vertical">

    <ImageView
        android:layout_width="match_parent"
        android:layout_height="200dp"
        android:id="@+id/image"/>

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Choose"
        android:id="@+id/choose"/>

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Upload"
        android:id="@+id/upload"/>

</LinearLayout>

How It Works?

Image to Base64 String

• First convert the image into bitmap.
• Then compress bitmap to ByteArrayOutputStream.
• Convert ByteArrayOutputStream to byte array.
• Finally convert byte array to base64 string.

Base64 String to Image

• Convert the base64 string to byte array.
• Now convert byte array to bitmap

• 2)Java file for XML biniding.

• public class MainActivity extends AppCompatActivity {
  
      Button choose,upload;
      ImageView image;
      int PICK_IMAGE_REQUEST = 111;
      String URL ="Your API";
      Bitmap bitmap;
      ProgressDialog progressDialog;
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_main);
          choose=(Button)findViewById(R.id.choose);
          upload=(Button)findViewById(R.id.upload);
          image=(ImageView)findViewById(R.id.image);
          choose.setOnClickListener(new View.OnClickListener() {
              @Override
              public void onClick(View v) {
                  Intent intent = new Intent();
                  intent.setType("image/*");
                  intent.setAction(Intent.ACTION_PICK);
                  startActivityForResult(Intent.createChooser(intent, "Select Image"), PICK_IMAGE_REQUEST);
              }
          });
          upload.setOnClickListener(new View.OnClickListener() {
              @Override
              public void onClick(View v) {
              sendImageToServer();
              }
          });
  
      }
  
      private void sendImageToServer()
      {
          ByteArrayOutputStream baos = new ByteArrayOutputStream();
          bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);
          byte[] imageBytes = baos.toByteArray();
          final String imageString = Base64.encodeToString(imageBytes, Base64.DEFAULT);
  
          StringRequest stringRequest = new StringRequest(Request.Method.POST, URL,
                  new Response.Listener<String>() {
                      @Override
                      public void onResponse(String response)
                      {
                          getJsonResponse(response);
                          //  Toast.makeText(ReaderActivity.this, response, Toast.LENGTH_LONG).show();
                          System.out.println("RESPONSE"+response);
                      }
                  },
                  new Response.ErrorListener() {
                      @Override
                      public void onErrorResponse(VolleyError error)
                      {
                          Toast.makeText(MainActivity.this, error.toString(), Toast.LENGTH_LONG).show();
                      }
                  }) {
              @Override
              protected Map<String, String> getParams()
              {
                  Map<String, String> params = new HashMap<String, String>();
                  params.put("Comment", "Report");
                  params.put("FileName",imageString);
                  params.put("FileType", "Profile");
                  params.put("ReportType","IncidentType");
                  params.put("SenderId","57");
                  return params;
              }
          };
  
          RequestQueue requestQueue = Volley.newRequestQueue(this);
          requestQueue.add(stringRequest);
      }
  
      private void getJsonResponse(String response)
      {
          try {
              JSONArray jsonArray = new JSONArray(response);
              String resultCode = jsonArray.getJSONObject(0).getString("ResultCode");
              if(resultCode.equals("OK"))
              {
  
                  Toast.makeText(this, "Image Uploaded Successfully....!!!!", Toast.LENGTH_SHORT).show();
              }else
              {
                  Toast.makeText(this, "Please try Again.....!!!!", Toast.LENGTH_SHORT).show();
  
              }
  
  
          }
  
          catch (JSONException e)
          {
              e.printStackTrace();
          }
  
      }
  
  
      @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) {
              Uri filePath = data.getData();
              try {
                  //getting image from gallery
                  bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), filePath);
                  //Setting image to ImageView
                  image.setImageBitmap(bitmap);
              } catch (Exception e) {
                  e.printStackTrace();
              }
          }
      }
  }