Why do my images shrink after loading with glide library

Use .dontAnimate() method to solve the issue.

Glide.with(context)
                .using(new FirebaseImageLoader())
                .load(pathReference)
                .dontAnimate()
                .placeholder(R.drawable.place_holder)
                .into(holder.logo);

Actually you have to give fix width and height to your image container(ImageView).

<ImageView
    android:id="@+id/channelImage"
    android:layout_width="65dp"
    android:layout_height="65dp"
    android:layout_centerHorizontal="true"
    android:layout_margin="10dp"
    android:src="@drawable/sama" />

Then when you call glide you have to override your width and height dynamically with override method. This is maximum Width and height for you container.

Glide.with(getActivity())
                    .load("your url")

                    .placeholder(R.drawable.tv2v_icon)
                    .diskCacheStrategy(DiskCacheStrategy.ALL)
                    .fitCenter()
                    .override(500,500)
                    .into(channelImage);

hope this can help you.

Anyway there are methods like .fitCenter() or .centerCrop() .Try using this methods in

    Glide.with(getApplicationContext())
                            .load("")
                            .centerCrop()
                            .placeholder(R.drawable.ic_launcher)
                            .crossFade()
.override(1000,1000)
                            .into(myImageView); 
           .

Following helped me:

1) Used adjustViewBounds = "true" in your Image View -> This will make the image view maintain its aspect ratio according to its image when it draws/redraws/resizes

2) Set layout_width = match_parent and layout_height = wrap_content for the recycler view's item view xml, and also for the Image View.

Reason:

Suppose Recycler view is set up with Grid Layout Manager having 2 columns in vertical orientation It will force the recycler view's item row's xml to be of half the screen width. Due to value of match_parent in the item row's and its chid's (imageview) layout_height attribute, it will result in image become half the screen's width. Now, due to adjustViewBounds = true, the image view would itself adjust its height to maintain the aspect ratio.