Compressing an Image before Uploading it to Firebase Storage

Question

I am trying to Compress an Image before Uploading it to Firebase Storage using SiliCompressor library , but it seems not working , the ProgressD

Answer 1

Here is what I have written, you can try it.

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

    if (resultCode == RESULT_OK) {
        if (requestCode == Constants.PICK_USER_PROFILE_IMAGE) {
            if (resultCode == RESULT_OK) {
                Bitmap bmp = ImagePicker.getImageFromResult(this, resultCode, data);//your compressed bitmap here
                startPosting(bmp);
            }
        }
    }
}

Your startPosting method should be like this

 private void startPosting(Bitmap bmp) {
    byte[] data = bmp.toByteArray();
    mProgress.setMessage("Uploading Image...");

    final String title_val = mPostTitle.getText().toString().trim();
    final String desc_val = mPostDesc.getText().toString().trim();
    if (!TextUtils.isEmpty(title_val) && !TextUtils.isEmpty(desc_val) && filePath != null) {
        mProgress.show();
        StorageReference filepath = mStorage.child("BlogImages").child(uri_image_final.getLastPathSegment());


        UploadTask uploadTask = filepath.putBytes(data);
        uploadTask.addOnFailureListener(new OnFailureListener() {
              @Override
              public void onFailure(@NonNull Exception exception) {
                // Handle unsuccessful uploads
              }
        }).addOnSuccessListener(new OnSuccessListener() {
              @Override
              public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {

            Uri downloadUri = taskSnapshot.getDownloadUrl();
            DatabaseReference newPost = mDatabase.push();
            DatabaseReference c = mDatabase.push();
            newPost.child("EventTitle").setValue(title_val);
            newPost.child("EventDescription").setValue(desc_val);
            newPost.child("EventImage").setValue(downloadUri.toString());
            newPost.child("PostId").setValue(c);



            mProgress.dismiss();
            startActivity(new Intent(PostActivity.this, MainActivity.class));


        }
    });


    } else if (TextUtils.isEmpty(title_val) && TextUtils.isEmpty(desc_val) && imageUri != null) {
        mProgress.show();
        StorageReference filepath = mStorage.child("BlogImages").child(uri_image_final.getLastPathSegment());
        UploadTask uploadTask = filepath.putBytes(data);
        uploadTask.addOnFailureListener(new OnFailureListener() {
              @Override
              public void onFailure(@NonNull Exception exception) {
                // Handle unsuccessful uploads
              }
        }).addOnSuccessListener(new OnSuccessListener() {
              @Override
              public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {

                Uri downloadUri = taskSnapshot.getDownloadUrl();
                DatabaseReference newPost = mDatabase.push();
                newPost.child("EventTitle").setValue("");
                newPost.child("EventDescription").setValue("");
                newPost.child("EventImage").setValue(downloadUri.toString());


                mProgress.dismiss();
               // startActivity(new Intent(PostActivity.this, MainActivity.class));
                Intent load=  new Intent(PostActivity.this,MainActivity.class);
                load.putExtra(eventname,eventname);
                startActivity(load);


            }
        });

    }

    else if (!TextUtils.isEmpty(title_val) && !TextUtils.isEmpty(desc_val) && imageUri== null){

        Toast.makeText(getApplicationContext(),"Please insert an Image and Upload ! ",Toast.LENGTH_LONG).show();

    }
}

Below is the class ImagePicker that have series of methods to do your work

public class ImagePicker {

private static final int DEFAULT_MIN_WIDTH_QUALITY = 400;        // min pixels
private static final String TAG = "ImagePicker";
private static final String TEMP_IMAGE_NAME = "tempImage";

public static int minWidthQuality = DEFAULT_MIN_WIDTH_QUALITY;

public static Bitmap getImageFromResult(Context context, int resultCode,
                                        Intent imageReturnedIntent) {
    Log.d(TAG, "getImageFromResult, resultCode: " + resultCode);
    Bitmap bm = null;
    File imageFile = getTempFile(context);
    if (resultCode == Activity.RESULT_OK) {
        Uri selectedImage;
        boolean isCamera = (imageReturnedIntent == null ||
                imageReturnedIntent.getData() == null ||
                imageReturnedIntent.getData().equals(Uri.fromFile(imageFile)));
        if (isCamera) {     /** CAMERA **/
            selectedImage = Uri.fromFile(imageFile);
        } else {            /** ALBUM **/
            selectedImage = imageReturnedIntent.getData();
        }
        Log.d(TAG, "selectedImage: " + selectedImage);

        bm = getImageResized(context, selectedImage);
        int rotation = getRotation(context, selectedImage, isCamera);
        bm = rotate(bm, rotation);
    }
    return bm;
}


private static Bitmap decodeBitmap(Context context, Uri theUri, int sampleSize) {
    BitmapFactory.Options options = new BitmapFactory.Options();
    options.inSampleSize = sampleSize;

    AssetFileDescriptor fileDescriptor = null;
    try {
        fileDescriptor = context.getContentResolver().openAssetFileDescriptor(theUri, "r");
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    }

    Bitmap actuallyUsableBitmap = BitmapFactory.decodeFileDescriptor(
            fileDescriptor.getFileDescriptor(), null, options);

    Log.d(TAG, options.inSampleSize + " sample method bitmap ... " +
            actuallyUsableBitmap.getWidth() + " " + actuallyUsableBitmap.getHeight());

    return actuallyUsableBitmap;
}

/**
 * Resize to avoid using too much memory loading big images (e.g.: 2560*1920)
 **/
private static Bitmap getImageResized(Context context, Uri selectedImage) {
    Bitmap bm = null;
    int[] sampleSizes = new int[]{5, 3, 2, 1};
    int i = 0;
    do {
        bm = decodeBitmap(context, selectedImage, sampleSizes[i]);
        Log.d(TAG, "resizer: new bitmap width = " + bm.getWidth());
        i++;
    } while (bm.getWidth() < minWidthQuality && i < sampleSizes.length);
    return bm;
}


private static int getRotation(Context context, Uri imageUri, boolean isCamera) {
    int rotation;
    if (isCamera) {
        rotation = getRotationFromCamera(context, imageUri);
    } else {
        rotation = getRotationFromGallery(context, imageUri);
    }
    Log.d(TAG, "Image rotation: " + rotation);
    return rotation;
}

private static int getRotationFromCamera(Context context, Uri imageFile) {
    int rotate = 0;
    try {

        context.getContentResolver().notifyChange(imageFile, null);
        ExifInterface exif = new ExifInterface(imageFile.getPath());
        int orientation = exif.getAttributeInt(
                ExifInterface.TAG_ORIENTATION,
                ExifInterface.ORIENTATION_NORMAL);

        switch (orientation) {
            case ExifInterface.ORIENTATION_ROTATE_270:
                rotate = 270;
                break;
            case ExifInterface.ORIENTATION_ROTATE_180:
                rotate = 180;
                break;
            case ExifInterface.ORIENTATION_ROTATE_90:
                rotate = 90;
                break;
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    return rotate;
}

public static int getRotationFromGallery(Context context, Uri imageUri) {
    String[] columns = {MediaStore.Images.Media.ORIENTATION};
    Cursor cursor = context.getContentResolver().query(imageUri, columns, null, null, null);
    if (cursor == null) return 0;

    cursor.moveToFirst();

    int orientationColumnIndex = cursor.getColumnIndex(columns[0]);
    return cursor.getInt(orientationColumnIndex);
}


private static Bitmap rotate(Bitmap bm, int rotation) {
    if (rotation != 0) {
        Matrix matrix = new Matrix();
        matrix.postRotate(rotation);
        Bitmap bmOut = Bitmap.createBitmap(bm, 0, 0, bm.getWidth(), bm.getHeight(), matrix, true);
        return bmOut;
    }
    return bm;
}


 private static File getTempFile(Context context) {
        File imageFile = new File(context.getExternalCacheDir(), TEMP_IMAGE_NAME);
        imageFile.getParentFile().mkdirs();
        return imageFile;
    }
}

The ImagePicker Class have all the methods of handling compression as well as rotation of image.

Hope it will help

Thanks to this link for uploading file ref

Uploading files on firebase