重写dispatchTouchEvent拦截点击事件，点击区域不是EditText隐藏键盘
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class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
}
override fun dispatchTouchEvent(ev: MotionEvent): Boolean {
if (ev.action == MotionEvent.ACTION_DOWN && shouldHideInput(currentFocus, ev)) {
hideSoftInput(currentFocus.windowToken)
}
return super.dispatchTouchEvent(ev)
}
// Check if click on the EditText, return true to hide soft input.
private fun shouldHideInput(view: View?, event: MotionEvent): Boolean {
if (view != null && view is EditText) {
val array = intArrayOf(0, 0)
view.getLocationInWindow(array)
val left = array[0]
val top = array[1]
val bottom = top + view.getHeight()
val right = left + view.getWidth()
return event.x <= left || event.x >= right || event.y <= top || event.y >= bottom
}
return false
}
// Hide system soft input.
private fun hideSoftInput(token: IBinder?) {
token?.let {
val im = getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager
im.hideSoftInputFromWindow(token, InputMethodManager.HIDE_NOT_ALWAYS)
}
}
}