Motivation

I applied to Codepath online course for Android Development, and was tasked to complete their pre-work of building a basic Todolist app during the application.

Thus, I followed the Codepath step-by-step intro tutorials below and completed the basic app with functionalities of adding/removing & saving todo items:

1. Android Studio & Genymotion Emulator Installation and video
2. Android Pre-work: TodoApp and video
3. Walkthrough: Build the TodoApp in Android Studio and video
4. Use Intents to Create Flows

However, when it come to editing the items, I found it quite challenging to follow the tutorial #4 to accomplish the editting functionality. Thus, I have created this this walkthrough tutorial to record my solution approach.

My Todolist App

The DodingDONE app features:

• User can successfully add and remove items from the todo list.
• User can tap a todo item in the list and bring up an edit screen for the todo item and then have any changes to the text reflected in the todo list.
• User can persist todo items and retrieve them properly on app restart.

The first 2 features are already guided in details in Codepath’s tutorial #3 Walkthrough: Build the TodoApp in Android Studio and video, so one may refer to that resource before continuing to read on with my tutorial.

Things to note

• This solution doesn’t incorporate SQLite for database, but save items in a local .txt file in the Android device.
• No fancy design of the view
• Compatible for Android 4.4 or later versions

STOP!

Please check if your app has the following features (demo below) before continuing:

1. User can add new item to the list
2. User can delete existing items in the list
3. User can retrieve the exact same items from the previous session upon reopening the app (data persistence).

Approach

Key Concepts

Pseudo Code

Implementation

Reflection

What’s next?

I have some future directions for the DodingDONE Project and my mobile dev journey too :)

DodingDONE Project

My Mobile Development Journey