AlertDialog with EditText, open soft keyboard automatically with focus on EditText doesn’t work

Ok I managed to get it working:

Builder builder = new Builder(this);
            final EditText input = new EditText(this);
            builder
                .setTitle(R.string.dialog_title_addsubject)
                .setMessage(R.string.dialog_addsubject)
                .setView(input)
                .setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {

                    public void onClick(DialogInterface dialog, int which) {
                        String value = input.getText().toString();
                        if (input.getText().toString().trim().length() == 0) {
                            Toast.makeText(Main.this, R.string.input_empty, Toast.LENGTH_SHORT).show();
                        } else {
                            db.insertSubject(value);
                            getData();
                        }
                        InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
                        imm.hideSoftInputFromWindow(input.getWindowToken(), 0);
                    }
                })
                .setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() {

                    public void onClick(DialogInterface dialog, int which) {
                        InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
                        imm.hideSoftInputFromWindow(input.getWindowToken(), 0);
                    }

                });

                builder.show();
                input.requestFocus();
                InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
                imm.toggleSoftInput(InputMethodManager.SHOW_FORCED, 0);

This method doesn’t need a dialog so I can use builder.show() to show the dialog and the code provided by Sabre opens the soft keyboard. Another code snippet in each of the buttons closes the soft keyboard automatically.

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