How to show the keyboard?

Question

Java

Hello, I'm having trouble displaying the keyboard. I will describe in more detail. There is one layer where there is one button, it calls the dialog box on which the buttons are located and edits the text. Further, after filling this window, the following dialog menu/window is called where the liner is located and texts are created in it. I googled the problem, there are similar problems, everyone writes that you need to set the mode so that when you start the focus on edit, there is no through the manifest. And it doesn’t work for me because it happens in a dialog box, help me solve the problem.