Android firebase resize image and upload to the firebase storage

Question

I want to resize the image before upload it to the firebase storage.

My problem is: FireBase uploads the images base on its Uri. I got the image from the gallery intent and place it on the ImageView and resize it like this :

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

    switch(requestCode) {
        case RC_SELECT_PHOTO:
            if (resultCode == RESULT_OK) {

                mImageUri = returnIntentData.getData();
                mSelectedImage.setImageURI(mImageUri);

                //get a Image obj from ImageView

                Bitmap bit = ((BitmapDrawable) mSelectedImage.getDrawable()).getBitmap();

                int width = bit.getWidth();
                int height = bit.getHeight();
                float rate = 0.0f;

                int maxResolution = 1920;

                int newWidth = width;
                int newHeight = height;

                if(width > height) {
                    if(maxResolution < width) {
                        rate = maxResolution/ (float) width;
                        newHeight = (int) (height * rate);
                        newWidth = maxResolution;
                    }

                } else {
                    if(maxResolution < height) {
                        rate = maxResolution/(float)height;
                        newWidth = (int) (width * rate);
                        newHeight = maxResolution;
                    }
                }

                Bitmap resizedImage = Bitmap.createScaledBitmap(bit, newWidth, newHeight, true);

                mSelectedImage.setImageBitmap(resizedImage);

            }

and firebase upload it base on the Uri like this (if there are other ways to upload file, it will be so helpful!):

public void uploadPhotoToStorage() {
    //present image's Ref
    StorageReference presentGymPhotoRef =
            mGymStorageReferences.child(mImageUri.getLastPathSegment());
    //Upload file to Firebase Storage
    presentGymPhotoRef.putFile(mImageUri)
            .addOnSuccessListener(this, new OnSuccessListener<UploadTask.TaskSnapshot>() {
                @Override
                public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
                    Uri downloadUri = taskSnapshot.getDownloadUrl();
                    //save gymPhoto Uri to instance

                    gymPhotoUri = downloadUri.toString();
                    gymName = mEditGymName.getText().toString();

.......

Is there any way to get the Bitmap's Uri or the ImageView's Uri? Or just resize and upload this successfully?

Answer 1

If you just need to upload the file in a certain size so you can retrieve it in the same size you can use Picasso http://square.github.io/picasso/. It allows you to provide a url and resize the image with the height and width dimensions that you may want without having to necessarily resize the image before upload (you may want to for other reasons). Below is an example of something I implemented to get an image from a URL and resize the image to fit inside my ImageView.

/**
 * Binds the data from the json file to the ImageView and the Textviews
 * are part of the movie_layout resource file.
 * @param recyclerViewHolder
 * @param position
 */
@Override
public void onBindViewHolder(RecyclerViewHolder recyclerViewHolder, int position) {
    MovieData movieData = list.get(position);
    Picasso.with(context).load(movieData.getMovie_img_url()).resize(75,100).into(recyclerViewHolder.imageView);
    recyclerViewHolder.textViewTitle.setText(movieData.getMovie_title());
    recyclerViewHolder.textViewAuthor.setText(movieData.getMovie_author());

}

Its simple to implement please view the following code below for an example on how to add it to your project:

dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
    exclude group: 'com.android.support', module: 'support-annotations'
})
compile 'com.android.support:appcompat-v7:25.3.1'
compile 'com.android.support:recyclerview-v7:25.3.1'
compile 'com.squareup.picasso:picasso:2.5.2' <!--Added Here-->
compile 'com.android.support.constraint:constraint-layout:1.0.2'
testCompile 'junit:junit:4.12'

}