How to Easily Upload Image to the server Programmatically in Android

Step 6 (Last Step in MainActivity) :

• Initialize uploadImage Button & call Image Chooser Gallery Intent on uploadImage Button click.
• Get Result from Image Chooser Gallery Intent on onActivityResult method.
• Create a AsyncTask Class inside MainActivity & pass the Intent Data to that Class to handle the  Background operations (Web Request).
• Do the Web Request & Response Activities in doInBackground Method & return to onPostExecute method to execute the UI updations (Loading Image From Server in WebView) .

MainActivity.java

package com.androidkk.learning;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import androidx.viewpager2.widget.ViewPager2;

import android.app.Activity;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.provider.MediaStore;
import android.util.Log;
import android.view.View;
import android.webkit.WebView;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;

import com.androidkk.learning.helper.Tab1;
import com.androidkk.learning.helper.Tab2;
import com.androidkk.learning.helper.TabFragmentAdapter;
import com.google.android.material.tabs.TabLayout;
import com.google.android.material.tabs.TabLayoutMediator;

public class MainActivity extends AppCompatActivity {

    //String tabName[] = new String[]{"Tab 1","Tab 2"};

    private static final int SELECT_IMAGE_REQUEST_CODE = 100;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        init();

    }

    public void init(){
        Button uploadImgBtn = (Button) findViewById(R.id.upladImageBtn);
        uploadImgBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                imageChooserIntent();
            }
        });
    }

    public void imageChooserIntent(){
        Intent intent = new Intent(
                Intent.ACTION_PICK,
                android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);

        intent.setType("image/*");
        startActivityForResult(
                Intent.createChooser(intent, "Select File"),
                SELECT_IMAGE_REQUEST_CODE);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        switch (requestCode){
            case SELECT_IMAGE_REQUEST_CODE:
                if (resultCode == Activity.RESULT_OK) {
                    Uri selectedImageUri = data.getData();
                    String tempPath = getPath(selectedImageUri, this);
                    Bitmap bm;
                    BitmapFactory.Options btmapOptions = new BitmapFactory.Options();
                    btmapOptions.inSampleSize = 2;
                    bm = BitmapFactory.decodeFile(tempPath, btmapOptions);
                    //Toast.makeText(this, tempPath, Toast.LENGTH_SHORT).show();
                    //mImageView.setImageBitmap(bm);
                    UploadImageToServer uploadImageToServer = new UploadImageToServer("http://192.168.43.176/androidKK_Projects/uploadImage.php",bm);
                    uploadImageToServer.execute();

                }
                break;
        }


    }

    public String getPath(Uri uri, Activity activity) {
        String[] projection = {MediaStore.MediaColumns.DATA};
        Cursor cursor = activity
                .managedQuery(uri, projection, null, null, null);
        int column_index = cursor.getColumnIndexOrThrow(MediaStore.MediaColumns.DATA);
        cursor.moveToFirst();
        return cursor.getString(column_index);
    }

    private class UploadImageToServer extends AsyncTask<String, String, String>{
        String requesturl = "";
        Bitmap bitmap = null;
        UploadImageToServer(String requestUrl, Bitmap bitmap){
            this.requesturl = requestUrl;
            this.bitmap = bitmap;
        }

        @Override
        protected String doInBackground(String... strings) {
            if(!this.requesturl.equals("")){
                HttpRequestHelper httpRequestHelper = new HttpRequestHelper(requesturl);
                httpRequestHelper.addFilePart("image_name", bitmap);
                String response = httpRequestHelper.finish();
                return response;
            }
            return "";
        }


        @Override
        protected void onPostExecute(String result) {
            super.onPostExecute(result);
            Log.e("Result" , result);
                if(!result.equals("0")){

                            WebView uploadedImageView = (WebView) findViewById(R.id.uploadedWebView);
                            uploadedImageView.loadUrl("http://192.168.43.176/androidKK_Projects/"+result);
                            Toast.makeText(MainActivity.this, "Image is uploaded", Toast.LENGTH_SHORT).show();

                }else{
                    //Toast.makeText(MainActivity.this, "Image is not uploaded", Toast.LENGTH_SHORT).show();
                }
            }
    }

}