Null pointer error with hideSoftInputFromWindow

Question

I get a null pointer exception at this row:

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


        

Answer 1

If you want to hide keyboard when touching in the screen, use the below code

       @Override
public boolean onTouchEvent(MotionEvent event) {
    InputMethodManager imm = (InputMethodManager)this.getSystemService(Context.
            INPUT_METHOD_SERVICE);
    imm.hideSoftInputFromWindow(this.getWindow().getDecorView().getRootView().getWindowToken(), 0);
    return true;
}

If you want to do this in specific view (EditText)

      public void  hideKeyBoard(EditText edt) {
    InputMethodManager imm = (InputMethodManager)this.getSystemService(Context.
            INPUT_METHOD_SERVICE);
    imm.hideSoftInputFromWindow(edt.getWindowToken(), 0);

}

or you can use any View.

To get the current view

    imm.hideSoftInputFromWindow(this.getWindow().getDecorView().getRootView().getWindowToken(), 0);