Tuesday, 28 April 2015

Android Project Hierarchy

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User specified java source code files will be available here.

2.genThe gen directory in an Android project contains auto generated files. You can see R.java inside this folder which is a generated class which contains references to certain resources of the project. R.java is automatically created by the Eclipse IDE and any manual changes are not necessary.

Android supports resources like images and certain XML configuration files, these can be keep separate from the source code. All these resources should be placed inside the res folder. This res folder will be having sub-folders to keep the resources based on its type.

Used to define strings, colors, dimensions, styles and static arrays of strings or integers. By convention each type is stored in a separate file, e.g. strings are defined in the res/values/strings.xml file.

This folder contains animations in XML for the property animation API which allows to animate arbitrary properties of objects over time.

This folder contains the layouts to be used in the application.A layout resource defines the architecture for the UI in an Activity or a component of a UI. These are resource directories in an application that provides different layout designs for different screen sizes

This folder contains menu resources to be used in the application (Options Menu, Context Menu, or submenu)

Drawable folders are resource directories in an application that provides different l bitmap drawables for medium, high, and extra high density screens.

External library files will be placed in this folder. If you want to any external library in your project place the library jar inside this folder and it will be added to the classpath automatically.

This folder contains raw hierarchy of files and directories, with no other capabilities. It is just an unstructured hierarchy of files, allowing you to put anything you want there and later retrieve as raw byte streams.

Bin folder is the area used by the compiler to prepare the files to be finally packaged to the application’s APK file. This includes Compiling your Java code into class files. Putting your resources (including images) into a structure to be zipped into the APK This is the output directory of the build. This is where you can find the final .apk file and other compiled resources.

All the android applications will have an AndroidManifest.xml file in the root directory. This file will contain essential information about the application to the Android system, information the system must have before it can run any of the application's code. This control file describes the nature of the application and each of its components

Source : www.compiletimeerror.com

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