Hide keyboard on outside touch (3 popular methods) //Best on top

link

https://stackoverflow.com/questions/4165414/how-to-hide-soft-keyboard-on-android-after-clicking-outside-edittext

Method1.kt

fun Activity.hideKeyboardOnClickOutsideEditText(view: View) {
    // Set up touch listener for non-text box views to hide keyboard.
    var previousAction = 0
    val onTouchListener = View.OnTouchListener { v, event ->
        if (currentFocus != null
            && event.action != MotionEvent.ACTION_DOWN
            && event.action != MotionEvent.ACTION_MOVE
            && previousAction != MotionEvent.ACTION_MOVE
        ) {
            currentFocus?.clearFocus()
            v?.hideKeyboard()
        }
        previousAction = event.action
        false
    }

    if (view !is EditText) {
        view.setOnTouchListener(onTouchListener)
    }

    //If a layout container, iterate over children and seed recursion.
    if (view is ViewGroup) {
        for (i in 0 until view.childCount) {
            val innerView = view.getChildAt(i)
            hideKeyboardOnClickOutsideEditText(innerView)
        }
    }
}

//use currentFocus?.clearFocus() or
//in parent viewgroup layout.xml
android:clickable="true"
android:focusable="true"
android:focusableInTouchMode="true"

Method2.kt

  fun hideKeyboardOutsideTouchEditText(view: View) {
    // Set up touch listener for non-text box views to hide keyboard.
    val onTouchListener = View.OnFocusChangeListener { v, hasFocus ->
        tryOrIgnore {
            if (!hasFocus) {
                v?.hideKeyboard()
            }
        }
    }

    if (view is EditText) {
        view.setOnFocusChangeListener(onTouchListener)
    }

    //If a layout container, iterate over children and seed recursion.
    if (view is ViewGroup) {
        for (i in 0 until view.childCount) {
            val innerView = view.getChildAt(i)
            hideKeyboardOutsideTouchEditText(innerView)
        }
    }
}

or

fun View.hideKeyboardOutsideTouch() {
        setOnFocusChangeListener { v, hasFocus ->
            if (!hasFocus) {
                hideKeyboard()
            }
        }
    }

etAccName.hideKeyboardOutsideTouch()
etDeviceName.hideKeyboardOutsideTouch()

in parent viewgroup layout.xml
android:clickable="true"
android:focusable="true"
android:focusableInTouchMode="true"

Method3.kt

Activity.kt

override fun dispatchTouchEvent(ev: MotionEvent?): Boolean {
        if (currentFocus != null) {
            val imm = getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager
            imm.hideSoftInputFromWindow(currentFocus!!.windowToken, 0)
        }
        return super.dispatchTouchEvent(ev)
    }