how to hide soft keyboard in fragments?

Question

i want to hide keyboard in fragments in android.Because once it displays it remain visible in all fragments.I try this method

    public static void hideKeyboard(Context ctx) {
    InputMethodManager inputManager = (InputMethodManager) ctx
            .getSystemService(Context.INPUT_METHOD_SERVICE);

    // check if no view has focus:
    View v = ((Activity) ctx).getCurrentFocus();
    if (v == null)
        return;

    inputManager.hideSoftInputFromWindow(v.getWindowToken(), 0);
}

and call this method on button click

signIn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
                hideKeyboard(ctx);
                login();


        }
    });

but this give error "java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.Object android.content.Context.getSystemService(java.lang.String)' on a null object reference"

Answer 1

For Java

try this one

public static void hideSoftKeyboard(Activity activity) {
        if (activity.getCurrentFocus() == null) {
            return;
        }
        InputMethodManager inputMethodManager = (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);
        inputMethodManager.hideSoftInputFromWindow(activity.getCurrentFocus().getWindowToken(), 0);
    }

to call this just pass below code from your onclick of button

signIn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
               hideSoftKeyboard(getActivity());
                login();


        }
    });

For Kotlin

fun hideSoftKeyboard(activity:Activity) {
  if (activity.getCurrentFocus() == null){
    return
  }
  val inputMethodManager = activity.getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager
  inputMethodManager.hideSoftInputFromWindow(activity.getCurrentFocus().getWindowToken(), 0)
}

pass below code from your onclick of button

signIn.setOnClickListener(object:View.OnClickListener() {
  fun onClick(v:View) {
    hideSoftKeyboard(getActivity())
    login()
  }
})