kfj001andClaude Opus 4.7
df9d92f116
- Replace broken chipBackground theme style with a color state-list selector (res/color/chip_duration_bg.xml) using chipBackgroundColor attribute directly on each Chip - Green (#81C784) when checked, light gray (#E8E8E8) when unchecked - Add minWidth="56dp" to give chips proper width Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Countdown Timer
A minimal Android application that demonstrates a simple countdown functionality with an audible alert.
Description
The Countdown Timer app is a lightweight utility that launches a modal dialog to count down from 10 seconds. Once the timer reaches zero, the app plays a system error tone and closes the dialog. This project serves as a basic example of using CountDownTimer, ToneGenerator, and custom Dialog implementation in Android.
Key Features
- Single-Action Interface: A simple main screen with a start button.
- Modal Countdown: A non-cancelable dialog that prevents user interference during the countdown.
- Audible Alert: Integration with Android's
ToneGeneratorto playTONE_SUP_ERRORupon completion. - Real-time Updates: UI updates every second to reflect the remaining time.
Getting Started
Prerequisites
- Android Studio (Ladybug or newer recommended)
- JDK 17
- An Android device or emulator running API level 24 or higher.
Building the App
To build the debug APK from the command line:
./gradlew assembleDebug
Running the App
- Open the project in Android Studio.
- Select your target device/emulator.
- Click the Run button or press
Shift + F10.
Project Structure
app/
├── src/
│ └── main/
│ ├── java/com/example/countdowntimer/
│ │ ├── MainActivity.kt # Main entry point; launches the timer
│ │ └── CountdownDialog.kt # Logic for the 10s countdown and tone
│ ├── res/ # UI layouts and resources
│ └── AndroidManifest.xml # Application manifest
└── build.gradle # App-level build configuration