Hướng dẫn sử dụng Retrofit upload file ảnh lên API - Phần MainActivity

Phần này nối tiếp bài viết https://zezo.dev/view/huong-dan-su-dung-retrofit-upload-file-anh-len-api 

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.provider.Settings;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.squareup.picasso.Picasso;

import java.io.File;

import okhttp3.MediaType;
import okhttp3.MultipartBody;
import okhttp3.RequestBody;
import okhttp3.ResponseBody;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
import retrofit2.Retrofit;
import retrofit2.converter.gson.GsonConverterFactory;

public class MainActivity extends AppCompatActivity {

    

    private static final int PICK_IMAGE_REQUEST_CODE = 100;
    
    private Uri imageUri;
    private static final String BASE_URL = "http://10.0.2.2:3000/api/"; // Replace with your base URL
    static  final String TAG = "zzzzzzzz";

    ImageView img_preview;
    TextView tv01;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        tv01 = findViewById(R.id.tv01);
        img_preview = findViewById(R.id.img_preview);
        findViewById(R.id.btn_browsefile).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                pickImage();
            }
        });

        findViewById(R.id.btn_upload).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                uploadFile();
            }
        });


        if (Build.VERSION.SDK_INT >= 30){
            if (!Environment.isExternalStorageManager()){
                Intent getpermission = new Intent();
                getpermission.setAction(Settings.ACTION_MANAGE_ALL_FILES_ACCESS_PERMISSION);
                startActivity(getpermission);
            }
        }




    }

    private void pickImage() {
//        Intent intent = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
         Intent intent = new Intent();
        intent.setType("image/*");
        intent.setAction(Intent.ACTION_PICK);
        startActivityForResult(intent, PICK_IMAGE_REQUEST_CODE);
    }

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

        if (requestCode == PICK_IMAGE_REQUEST_CODE && resultCode == RESULT_OK) {
            imageUri = data.getData();
            Log.d(TAG, "onActivityResult: " + imageUri);
            tv01.setText(imageUri.toString());
        }
    }

    private void uploadFile() {
        if (imageUri == null) {
            Log.d(TAG, "uploadFile: URI null");
            tv01.setText("URI file null");
            return;
        }

        File file = new File(getRealPathFromURI(imageUri));

        Log.d(TAG, "uploadFile: " + file.toString());


        RequestBody requestBody = RequestBody.create(MediaType.parse("image/*"), file); 
        // *** chú ý cái này MediaType.parse("image/*")  phải để là  image/* thì trên server mới nhận diện ra file ảnh.
        
  
        
        MultipartBody.Part filePart = MultipartBody.Part.createFormData("hinh_anh", file.getName(), requestBody);

        Log.d(TAG, "uploadFile: "+ filePart.body().toString());
        Gson gson = new GsonBuilder().setLenient().create();
        Retrofit retrofit = new Retrofit.Builder()
                .baseUrl(BASE_URL)
                .addConverterFactory(GsonConverterFactory.create(gson))
                .build();

        ApiService apiService = retrofit.create(ApiService.class);

        Call<KetQuaUpload> objCall = apiService.uploadFile(filePart);
        objCall.enqueue(new Callback<KetQuaUpload>() {
            @Override
            public void onResponse(Call<KetQuaUpload> call, Response<KetQuaUpload> response) {
                Log.d(TAG, "onResponse: " + response.body());
                if (response.isSuccessful()) {
                    // Upload thành công
                    Log.d(TAG, "onResponse: " + response.body().toString());

                    KetQuaUpload objKQ = response.body();
                    if(objKQ.error == null){
                        // không có lỗi, hien thi anh
                        Picasso.get().load(objKQ.link_anh).into(img_preview);

                    }


                } else {
                    // Upload thất bại
                }
            }

            @Override
            public void onFailure(Call<KetQuaUpload> call, Throwable throwable) {
                    throwable.printStackTrace();
            }
        });



    }

    private String getRealPathFromURI(Uri uri) {
        String[] projection = {MediaStore.Images.Media.DATA};
        Cursor cursor = getContentResolver().query(uri, null, null, null, null);
        Log.d(TAG, "getRealPathFromURI: "  + cursor.getCount());
        if (cursor != null) {
            cursor.moveToFirst();
            for(int i = 0; i< cursor.getColumnCount(); i++){
                Log.d(TAG, "getRealPathFromURI: " + cursor.getColumnName(i) + "==>" + cursor.getString(i));

            }

            int columnIndex = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
            String path = cursor.getString(columnIndex);
            cursor.close();
            return path;
        } else {
            return null;
        }
    }


}