使用自定义布局时AlertDialog按钮不可见

<Button
    android:id="@+id/myButton"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="确定" />

LayoutInflater inflater = getLayoutInflater();
View customLayout = inflater.inflate(R.layout.custom_dialog_layout, null);

AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setView(customLayout);

AlertDialog dialog = builder.create();
dialog.show();