手动显示和隐藏软键盘 android

上山打老虎

　　一：在某一个activity中点击任意位置均可以隐藏键盘

val keyboard =getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager
//this.currentFocus?.windowToken 是获取当前activity的windowToken
keyboard.hideSoftInputFromWindow(this.currentFocus?.windowToken,0)
二：若输入法已经打开则隐藏，反之则显示

val keyboard = getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager
keyboard.toggleSoftInput(0,InputMethodManager.HIDE_NOT_ALWAYS)
三：需要接收输入的视图对键盘进行强制打开或隐
val keyboard = getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager

//keyboard.isActive是键盘的状态，若是打开的则返回true否则返回false
if (keyboard.isActive){
  //强制关闭
  keyboard.hideSoftInputFromWindow(v.windowToken,0)
}else{
  //打开
  keyboard.showSoftInput(v,InputMethodManager.SHOW_FORCED)
}
 
遇到的问题：keyboard.isActive一直返回的都是True，一直没找出是什么原因，本人的解决方法自己定义一个状态值记录
   键盘的状态
private var isopen = false

val keyboard = getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager

//keyboard.isActive是键盘的状态，若是打开的则返回true否则返回false
//
if (isopen){
  Log.v("lfl","关闭键盘")
  //强制关闭
  keyboard.hideSoftInputFromWindow(v.windowToken,0)
  isopen = !isopen
}else{
  Log.v("lfl","打开键盘")
  //打开
  keyboard.showSoftInput(v,InputMethodManager.SHOW_FORCED)
   isopen = !isopen
}