Android Tutorial

Software Setup and Configuration

Android Studio

File Structure

Components

Core Topics

Layout

View

Button

Intent and Intent Filters

Toast

RecyclerView

Fragments

Adapters

Other UI Component

Image Loading Libraries

Date and Time

Material Design

Bars

Working with Google Maps

Chart

Animation

Database

Advance Android

Jetpack

Architecture

App Publish

App Monetization

Android Project folder Structure

When you create a new Android project using Android Studio, it sets up a standard project structure for you. Here's an overview of the typical folder structure:

  1. app/

    • Main module of your Android app.

  2. manifests/

    • AndroidManifest.xml: Defines the app's structure and metadata like permissions, activities, services, etc.

  3. java/

    • This is where your Kotlin or Java source code resides.
    • Typically has three sub-folders:
      • com.example.yourappname: Main package for your app's source code.
      • com.example.yourappname (androidTest): For instrumentation tests.
      • com.example.yourappname (test): For unit tests.

  4. res/: Contains resources used in the app.

    • drawable/: Graphics and XML-based drawable files.
    • layout/: XML layout files.
    • mipmap/: Launcher icons.
    • values/:
      • strings.xml: String values.
      • styles.xml: App-wide styles and themes.
      • colors.xml: Color values.
      • dimens.xml: Dimension values.
    • menu/: XML files for app menus.
    • raw/: Arbitrary files saved in their raw form.
    • anim/: Animation XML files.
    • xml/: Miscellaneous XML files, such as configuration files.

  5. Gradle Scripts/: Contains the build scripts.

    • build.gradle (Module: app): Build configuration for the app module. This is where you add dependencies specific to the app module.
    • build.gradle (Project: YourAppName): Build configuration that applies to the entire project. Useful for adding repositories or dependencies shared among multiple modules.
    • settings.gradle: Specifies which modules to include in your project.
    • gradle.properties: Gradle settings for the project.
    • gradlew and gradlew.bat: Gradle wrapper scripts for Unix-like systems and Windows, respectively.

  6. .gradle/ and .idea/:

    • These folders are generated by the build system and IDE, respectively. They contain various configuration and build files that you generally don't need to edit.

  7. build/:

    • Generated by the build system. Contains compiled code, APKs, etc.

  8. libs/:

    • Contains private libraries that you might want to include in your app.

  9. .gitignore:

    • Specifies which files/folders to ignore if you're using Git as version control.

This structure helps in organizing resources and source files, making it easier for developers to navigate and maintain the project. As your project grows, you might introduce new directories or files, but the basic structure will remain similar.

  1. Android project directory layout:

    An Android project typically has the following directory layout:

    app/
������ src/
��   ������ main/
��   ��   ������ java/            // Java or Kotlin source code
��   ��   ������ res/             // Resources (layouts, drawables, etc.)
��   ��   ������ AndroidManifest.xml
��   ������ test/                 // Unit tests
������ build.gradle              // Module-level build script

  2. Recommended folder structure for Android projects:

    Follow a modular structure:

    app/
������ src/
��   ������ main/
��   ��   ������ java/
��   ��   ��   ������ com/
��   ��   ��       ������ example/
��   ��   ��           ������ myapp/
��   ��   ��               ������ feature1/
��   ��   ������ res/
��   ��   ������ AndroidManifest.xml
��   ������ test/
������ build.gradle

    Group features into separate packages/modules.

  3. How to organize packages in Android project:

    Organize packages by feature:

    com.example.myapp
������ feature1/
��   ������ ui/
��   ������ data/
��   ������ ...
������ feature2/
��   ������ ui/
��   ������ data/
��   ������ ...
������ ...

    Divide packages into UI, data, and other logical segments.

  4. Standard Android project directory conventions:

    Stick to the standard Android directory conventions:

    app/
������ src/
��   ������ main/
��   ��   ������ java/
��   ��   ������ res/
��   ��   ������ AndroidManifest.xml
��   ������ test/
������ build.gradle

    Adhering to conventions ensures compatibility with Android build tools.

  5. Gradle project structure for Android apps:

    The Gradle project structure is defined in build.gradle files. The main project's build.gradle may include module-level build.gradle files.

    myapp/
������ build.gradle   // Main project build script
������ settings.gradle
������ app/
    ������ build.gradle   // Module-level build script
    ������ ...

  6. Android app module structure:

    Organize the app module by features:

    app/
������ src/
��   ������ main/
��   ��   ������ java/
��   ��   ������ res/
��   ��   ������ AndroidManifest.xml
��   ������ test/
������ build.gradle

  7. Separating resources in Android project:

    Segregate resources by type:

    app/
������ src/
��   ������ main/
��   ��   ������ java/
��   ��   ������ res/
��   ��   ��   ������ drawable/
��   ��   ��   ������ layout/
��   ��   ��   ������ ...
��   ��   ������ AndroidManifest.xml
��   ������ test/
������ build.gradle

    Keep drawables in res/drawable/ and layouts in res/layout/.

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