How to set RecyclerView Max Height

Question

I want to set Max Height of RecylerView.I am able to set max height using below code.Below code makes height 60% of current screen.

     DisplayMetrics displ         


        

Answer 1

The simplest way is to use ConstraintLayout and setting height constraint on Recycleview.

Please note that before Lollipop, the recycleview will not scroll. As a solution, add the below code in the activity's oncreate.

if (android.os.Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
        ConstraintLayout CL_OUTER_RV_Choose_Categories = findViewById(R.id.CL_OUTER_RV_Choose_Categories);
        LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) CL_OUTER_RV_Choose_Categories.getLayoutParams();
        lp.height = LinearLayout.LayoutParams.WRAP_CONTENT;
    }

This will ensure that height is fixed only on supported devices, and the complete recycle view is shown on older devices.

Do let me know if there is any better way.