Android Toolbox

Introduction

Android Toolbox is a versatile Android application designed to provide users with a range of functionalities, including system information checking, audio and PDF file handling, stopwatch and timer features, and a text editor for creating notebooks.

Design Goals/Objective

The primary objectives of the Android Toolbox project include:

• Understanding the concept of developing an Android application.
• Offering diverse functionalities within a single installation.
• Providing system information checks.
• Supporting audio and PDF file handling.
• Implementing a stopwatch and timer.
• Creating a user-friendly text editor for notebooks.

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Design/Development/Implementation of the Project

Design

The Android Toolbox is built using Java programming language and the Android Studio IDE. The graphical user interface (GUI) is designed in XML for a user-friendly experience. Key features include:

1. Notebook: Create, save, and sync notes with an online (Firebase) database.
2. System Info: Display various Android system information.
3. PDF Reader: Open and view PDF documents.
4. Audio Player: Play audio files with control over volume, duration, pitch, and speed.
5. Stopwatch and Timer: Record and manage time easily.

Implementation

The code is implemented in Android Studio, with Java files handling various functionalities and XML files defining the layout. Key files include:

• AudioPlayerActivity.java
• SystemInfoActivity.java
• Timer.java
• MainActivity.java
• NotebookResetPassword.java
• PDFReader.java
• Notebook.java
• NotebookSignUp.java
• Stopwatch.java

Performance Evaluation

Simulation Environment/Simulation Procedure

The Android Toolbox project met its goals during testing in the Android Studio environment, with the code functioning as expected.

Results and Discussions

Screenshots of the Android Toolbox in action:

Limitations

There are some limitations users may face, including:

• Picture-in-picture (PiP) mode limitations on older Android versions.
• Text selection issues in PDFReader.
• Audio pitch and speed restrictions on certain Android versions.
• Stopwatch displaying limitations.

Conclusion

Introduction

The Android Toolbox project provided valuable experience in Java programming and GUI implementation, along with Firebase database integration.

Practical Implications

Android Toolbox offers practical benefits, and future plans include enhancing security, improving PDF Reader, and additional features.

Scope of Future Work

Future work involves encrypting user notes, improving PDF Reader functionality, and enabling the saving/exporting of audio files.

References

1. Android PDF Viewer - GitHub
2. Firebase - Get Started with Firebase
3. Android Developers - Application Fundamentals
4. Android Developer - Build
5. Stack Overflow - How to enable night mode programmatically?