How to Build a CRUD App With Kotlin and Android Studio 14 Update Persons 16 Preferences: Main User and Deactivated Items

Chapter 15 Tags

The previous chapters provided a basic toolset to add new CRUD fragments. We won’t cover the listing of tags, adding tags and updating tags since the previously presented code for using RecyclerViews for listing items, adding items and updating items serves as a blueprint for implementing the corresponding logic for tags. Therefore, we ask you to practice a little bit and extend the existing code base with the necessary files on your own. However, to be in line with the tutorial’s code, we provide a couple of hints and instructions:

15.1 string.xml (English)

Listing 102: string.xml (English)

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<string name="app_name">CrudDiary</string>

<string name="female_gender">female</string>

<string name="diverse_gender">diverse</string>

<string name="persons_list_menu_title">Persons</string>

<string name="persons_add_menu_title">Add person</string>

<string name="persons_update_menu_title">Update person</string>

<string name="diary_entries_list_menu_title">Diary entries</string>

<string name="genders_list_menu_title">Genders</string>

<string name="genders_add_menu_title">Add gender</string>

<string name="genders_update_menu_title">Update gender</string>

<string name="support_section">Support</string>

<string name="preferences_menu_title">Preferences</string>

<string name="import_export_menu_title">Import/Export</string>

<string name="search_view_hint">Search entries</string>

<string name="fab_add_description">Add entry</string>

<string name="fab_filter_description">Filter entries</string>

<string name="fab_csv_description">Export entries to CSV file</string>

<string name="deactivate_button">Deactivate</string>

<string name="delete_button">Delete</string>

<string name="update_button">Update</string>

<string name="unique_gender_violation">This gender name already exists!</string>

<string name="unique_person_violation">This person already exists!</string>

<string name="unique_tag_violation">This tag already exists!</string>

<string name="validation_no_name">Name is required</string>

<string name="validation_no_title">Title is required</string>

<string name="validation_no_birthdate">Birthdate is required</string>

<string name="validation_no_gender">Gender is required</string>

<string name="inactive_label">Inactive</string>

<string name="inactivity_safety_dialog_title">Safety check</string>

<string name="inactivity_safety_check">Actually deactivate entry?</string>

<string name="no_entries">You either have not created any entries yet or there are no entries matching your search/filter criteria.</string>

<string name="item_image_description">Assigned image</string>

<string name="add_image_button">Add image</string>

<string name="change_image_button">Change image</string>

<string name="delete_image_button">Delete image</string>

<string name="image_picking_canceled">Image picking canceled</string>

<string name="person_gender_label">Gender</string>

<string name="person_birthdate_label">Birthdate</string>

<string name="title_label">Title</string>

</resources>

Since we want to be able to search in our tags list (e.g., entering ’day’ in the search mask should find the tags ’birthday’, ’Monday’, etc), our adapter must implement the Filterable interface.

When finished, you should be able to tap on the menu item ’Tags’ in the main menu, which displays an empty list (see Figure 15.1).

At the bottom right there should be a FAB with which one is able to add a new tag (see Figure 15.2).

Figure 15.2: Input mask for adding a tag

After adding a new tag, it should be shown in the tags list (see Figure 15.3).

Figure 15.3: Tags list after adding a tag

After selecting this item one should be able to update the existing tag (see Figure 15.4).

Figure 15.4: Input mask for updating an existing tag

After updating an item the list should display the adapted item (see Figure 15.5).