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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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Simple example of DraggableTextView in Android | Kotlin

Hello All, By using simple onTouch event we make an DraggableTextView widget.
Here is the code sample for you. 
override fun onTouch(v: View?, event: MotionEvent?): Boolean {
    val x = event?.rawX?.toInt()!!
    val y = event.rawY.toInt()

    when (event.action) {
        MotionEvent.ACTION_DOWN -> {
            val layoutParams = layoutParams as ConstraintLayout.LayoutParams
            xDelta = x - layoutParams.leftMargin
            yDelta = y - layoutParams.topMargin
            rect.set(0, 0, width, height)
            isDragging = true
        }
        MotionEvent.ACTION_MOVE -> {
            val layoutParams = layoutParams as ConstraintLayout.LayoutParams
            layoutParams.leftMargin = x - xDelta
            layoutParams.topMargin = y - yDelta
            setLayoutParams(layoutParams)
        }
        MotionEvent.ACTION_UP -> {
            isDragging = false
        }
    }
    invalidate()
    return true
}

Here is the full video tutorial.

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