Can I Expand/Collapse the Category Tree?

You cannot expand/collapse the category tree.
If you enable category, the category tree is always displayed, with all the levels opened, on the left side of the record view.

For your reference, described below are the steps to use a drop-down field to categorize records and to create views for each record category.

The steps are as follows.

Adding a Drop-down Field

First of all, you need to add a drop-down field which you use instead of categories.

  1. Open the app setting screen and select "Form" tab.

  2. Add a drop-down field by dragging and dropping it.

  3. Click the setting button Setting button on the upper right of the drop-down field that you created.

  4. Set the field and click Save.
    Example: When creating category items A, B,and C

    • Field Name:
      Enter "Category".
    • Items and their order:
      A, B, C (From top to bottom) Image
  5. Click "Save Form" on the upper left of the screen.

  6. Click Update App on the upper right of the screen, and then click OK.

Then, use this drop-down field to categorize records.

Categorizing Records

  1. Open the edit records screen.
    Editing Records

  2. Select an category item from the drop-down field. Image

  3. Click Save to save the record.

The last step is to create a view and set filter conditions.

Creating Views for Each Category

  1. Open the app setting screen and click "Views".

  2. Click the add button Add button on the upper right of the screen.

  3. Set the view and click Save on the upper left of the screen.
    Example: When showing only records that belong to the category "A"

    • View Name:
      Enter "Category A"
    • Visible Fields and Column Order:
      Select "List view", and drag and drop the field, that you want to display in the record list screen, to the right area.
    • Filter Conditions:
      Specify options in the drop-down field.
      In this example, Category, includes any of, and A are selected.
      Image
  4. Repeat the step to add a view for each option.

  5. Click Update App on the upper right of the screen, and then click OK.

Now, views are created for each option.

By switching views, you can display records that are filtered by categories. Image