Null pointer error with hideSoftInputFromWindow

Question

I get a null pointer exception at this row:

public void hideKeyboard(){ 
InputMethodManager inputManager = (InputMethodManager)            
            this.         


        

Answer 1

Just use this one:

public void hideKeyboard(View v){ 
  InputMethodManager imm = (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);
  imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
}

Answer 2

Use this if you are getting error : Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.os.IBinder android.view.View.getWindowToken()' on a null object reference

---

InputMethodManager inputMethodManager = (InputMethodManager) MainActivity.this.getSystemService(Activity.INPUT_METHOD_SERVICE);

   if(MainActivity.this.getCurrentFocus() != null)
        {
         inputMethodManager.hideSoftInputFromWindow(MainActivity.this.getCurrentFocus().
getWindowToken(), 0);
        }