Answers for "button hide inside keyboard in android"

android hide keyboard

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

// call from inside an Activity...
hideKeyboard(this, view);
hideKeyboard(this, getCurrentFocus());
hideKeyboard(this, getWindow().getDecorView());
hideKeyboard(this, findViewById(android.R.id.content));

button hidden by keyboard android

android:windowSoftInputMode="adjustResize"