android关闭软键盘

  
private void hintKeyboard() {  
 InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);              
 if(imm.isActive()&&getCurrentFocus()!=null){  
    if (getCurrentFocus().getWindowToken()!=null) {  
    imm.hideSoftInputFromWindow(getCurrentFocus().getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);  
    }               
 }  
}