**Try this.**
InputMethodManager inputManager = (InputMethodManager) getApplicationContext() .getSystemService(Context.INPUT_METHOD_SERVICE);
inputManager.hideSoftInputFromWindow(this.getCurrentFocus().getWindowToken(), InputMethodManager.RESULT_UNCHANGED_SHOWN);

**Use Below Code**
your_button_id.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { try { InputMethodManager imm = (InputMethodManager)getSystemService(INPUT_METHOD_SERVICE); imm.hideSoftInputFromWindow(getCurrentFocus().getWindowToken(), 0); } catch (Exception e) {
} } });