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Simple RecyclerView example with filter option in Android

Hi Guys, Maybe you all are expert in terms of using RecyclerView in android. This blog is simple example for using filter option with RecyclerView adapter. As for now you will instantiate RecyclerView and set the adapter to RecyclerView as following way. RecyclerView list = (RecyclerView) findViewById(R.id.list); list.setLayoutManager(new LinearLayoutManager(this)); list.setHasFixedSize(true); ArrayList&ltNumber&gt numbers = new ArrayList&lt&gt(); String ONEs[] = {"ZERO", "ONE", "TWO", "THREE", "FOUR", "FIVE", "SIX", "SEVEN", "EIGHT", "NINE", "TEN"}; String TENs[] = {"ZERO", "TEN", "TWENTY", "THIRTY", "FOURTY", "FIFTY", "SIXTY", "SEVENTY", "EIGHTY", "NINETY", "HUNDRED"}; String HUNDREDS[] = {"ZERO", "HUNDRED", "TWO HUND
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Dynamic Grid Count in GridLayoutManager using RecyclerView | Android | Kotlin

Sometime we need RecyclerView filled with dynamic row count. For example, some row has 3 columns, and some has 2 columns, and some should have only one column like that.
Here is the simple example of dynamic grid count using GridLayoutManager in RecyclerView. 
val layoutManager = GridLayoutManager(this, 6)
layoutManager.spanSizeLookup = object : GridLayoutManager.SpanSizeLookup() {
    override fun getSpanSize(position: Int): Int {
        when (position) {
            0, 1, 2, 6, 7, 8, 12, 13, 14, 18, 19, 20 -> return 2
            3, 4, 9, 10, 15, 16, 21, 22, 24, 25 -> return 3
            5, 11, 17, 23 -> return 6
            else -> return 2
        }
    }
}
recyclerView.layoutManager = layoutManager
Screenshot:

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