Android软键盘的弹出与掩藏

edittext.setOnKeyListener(onkey);OnKeyListener onkey = new OnKeyListener() {	@Override	public boolean onKey(View v, int keyCode, KeyEvent event) {		if(event.getKeyCode() == KeyEvent.KEYCODE_ENTER && event.getAction() == KeyEvent.ACTION_UP){		 InputMethodManager imm = (InputMethodManager)v.getContext().getSystemService(Context.INPUT_METHOD_SERVICE);	         imm.toggleSoftInput(0, InputMethodManager.HIDE_NOT_ALWAYS);			return true;		}		return false;	}};

edittext.setInputType(InputType.TYPE_NULL);