Add icon with title in CollapsingToolbarLayout

Question

I am using CoordinatorLayout to get this effect :

Here is the layout code:

Answer 1

You may try the following

Reference for Co-Ordinator Layout

Now inside your MainActivity.java

private void handleToolbarTitleVisibility(float percentage) {
    if (percentage >= PERCENTAGE_TO_SHOW_TITLE_AT_TOOLBAR) {

        if(!mIsTheTitleVisible) {
            startAlphaAnimation(textviewTitle, ALPHA_ANIMATIONS_DURATION, View.VISIBLE);
            toolbar.setAlpha(0.9f);
            toolbar.setBackgroundDrawable(new ColorDrawable(getResources().getColor(R.color.Primary)));
            mIsTheTitleVisible = true;
        }
    } 
    else {
        if (mIsTheTitleVisible) {
            startAlphaAnimation(textviewTitle, ALPHA_ANIMATIONS_DURATION, View.INVISIBLE);
            toolbar.setBackgroundDrawable(new ColorDrawable(getResources().getColor(android.R.color.transparent)));
            mIsTheTitleVisible = false;
        }
    }
}

Note: Keep the toolbars background transparent when expanded.