How to downsize images before upload to Firebase?

Question

How to downsize images before uploading to Firebase? or after

This is my first app https://play.google.com/store/apps/details?id=com.devkang.mystep

I think it takes too long to upload and download.

private void sendPost() {
    mProgressDialog.setMessage("Sending post...");
    mProgressDialog.setCancelable(false);
    mProgressDialog.setIndeterminate(true);
    mProgressDialog.show();

    FirebaseUtils.getUserRef(FirebaseUtils.getCurrentUser().getEmail().replace(".", ","))
            .addListenerForSingleValueEvent(new ValueEventListener() {
                @Override
                public void onDataChange(DataSnapshot dataSnapshot) {
                    User user = dataSnapshot.getValue(User.class);
                    final String postId = FirebaseUtils.getUid();
                    TextView postDialogTextView = (TextView) mRootView.findViewById(R.id.post_dialog_edittext);
                    String text = postDialogTextView.getText().toString();

                  //add hashTag
                    EditText tag = (EditText) mRootView.findViewById(R.id.post_dialog_hash_tag);
                    String hashTag = tag.getText().toString();

                    mPost.setUser(user);
                    mPost.setNumComments(0);
                    mPost.setNumLikes(0);
                    mPost.setTimeCreated(System.currentTimeMillis());
                    mPost.setPostId(postId);
                    mPost.setPostText(text);
                    mPost.setPostHashTag(hashTag);

                    if (mSelectedUri != null) {
                        FirebaseUtils.getImageSRef()
                                .child(mSelectedUri.getLastPathSegment())
                                .putFile(mSelectedUri)
                                .addOnSuccessListener(getActivity(),
                                        new OnSuccessListener<UploadTask.TaskSnapshot>() {
                                            @Override
                                            public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
                                                String url = Constants.POST_IMAGES + "/" + mSelectedUri.getLastPathSegment();
                                                mPost.setPostImageUrl(url);
                                                addToMyPostList(postId);
                                            }
                                        });
                    } else {
                        addToMyPostList(postId);
                    }
                }

                @Override
                public void onCancelled(DatabaseError databaseError) {
                    mProgressDialog.dismiss();
                }
            });
}

use Image compression for the image before uploading, so that it becomes smaller size to upload or download. — Stuti Kasliwal, Dec 27 '18 at 06:46
try these one https://github.com/zetbaitsu/Compressor , https://github.com/Tourenathan-G5organisation/SiliCompressor — Ravindra Kushwaha, Dec 27 '18 at 06:47
Possible duplicate of [Resize an image before uploading it to firebase](https://stackoverflow.com/questions/37557343/resize-an-image-before-uploading-it-to-firebase) — GianhTran, Dec 27 '18 at 06:48
Follow this URL https://medium.com/@adigunhammedolalekan/how-to-resize-images-for-better-upload-download-performance-android-development-fb7297f9ec24 — Mayank Sharma, Dec 27 '18 at 06:50

score 2 · Answer 1 · answered Dec 27 '18 at 07:26

You can compress the Image file using bitmap compression algorithm such as PNG compression(which is lossless compression) and then save the compressed image to a location(mNewSelectedUri) and upload to firebase.

val bitmap = MediaStore.Images.Media.getBitmap(context!!.contentResolver, mSelectedUri)
bitmap.compress(Bitmap.CompressFormat.PNG, 90, bytes) //compress to any quality 70-90 is preferred
//new Image File
val imageFile = File(docDir, imageFilename)
//writing new compressed bitmap to file
FileOutputStream(imageFile).use { fo ->
            imageFile.createNewFile()
            fo.write(bytes.toByteArray())
}

NOTE: If you want to check the size of the image file u can use below method to check the file size before uploading.It will return you size of file in MB.

imageSizeInMB = imageFile.length().toDouble() / (1024 * 1024)

Reference: How to get URI from File?

score 0 · Answer 2 · answered Dec 27 '18 at 06:47

0

Compressor Lib Try this lib. Compressor will allow you to compress large photos into smaller sized photos with very less or negligible loss in quality of the image.

answered Dec 27 '18 at 06:47

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How to downsize images before upload to Firebase?

2 Answers2