Android - Show keyboard safely

ShowKeyboard.java

public void showKeyboard() {
    InputMethodManager imm = (InputMethodManager) getContext().getSystemService(Context.INPUT_METHOD_SERVICE);

    if (imm != null) {
        editText.postDelayed(() -> {
            editText.requestFocus();
            imm.showSoftInput(editText, 0);	// might be flags
        }, 300);
    }
}