Project Build Process Done by "ant debug" Command

This section describes the Android project build process done by the 'ant debug' command defined in the Ant build file. It performs 'aidl', 'aapt', 'javac', 'dex', 'apkbuilder' and 'zipalign' all together automatically.

With the use of Ant build file, those 7 project build steps are all performed automatically by a single Ant task, "debug" or "release", defined in the build file. Let's exam the "ant debug" output on the "HelloAndroid" project to see how those build steps are performed:

C:\herong\HelloAndroid>\local\apache-ant-1.9.5\bin\ant debug

Buildfile: C:\herong\HelloAndroid\build.xml



 [checkenv] Android SDK Tools Revision 24.3.3
 [checkenv] Installed at C:\local\android-sdk-windows

     [echo] Project Name: HelloAndroid
  [gettype] Project Type: Application




[getbuildtools] Using latest Build Tools: 22.0.1
     [echo] Resolving Build Target for HelloAndroid...
[gettarget] Project Target:   Android 5.1.1
[gettarget] API level:        22
[gettarget] WARNING: No minSdkVersion value set. Application will
            install on all Android versions.
     [echo] ----------
     [echo] Creating output directories if needed...
    [mkdir] Created dir: C:\herong\HelloAndroid\bin\rsObj
    [mkdir] Created dir: C:\herong\HelloAndroid\bin\rsLibs
     [echo] ----------
     [echo] Resolving Dependencies for HelloAndroid...
[dependency] Library dependencies:
[dependency] No Libraries
[dependency] ------------------
     [echo] ----------
     [echo] Building Libraries with 'debug'...
   [subant] No sub-builds to iterate on

[mergemanifest] Found Deleted Target File
[mergemanifest] Merging AndroidManifest files into one.
[mergemanifest] Manifest merger disabled. Using project manifest only.
     [echo] Handling aidl files...
     [aidl] No AIDL files to compile.
     [echo] ----------
     [echo] Handling RenderScript files...
     [echo] ----------
     [echo] Handling Resources...
     [aapt] Found Deleted Target File
     [aapt] Generating resource IDs...
     [echo] ----------
     [echo] Handling BuildConfig class...
[buildconfig] No need to generate new BuildConfig.


    [javac] Compiling 1 source file to



      [dex] input: C:\herong\HelloAndroid\bin\classes
      [dex] Found Deleted Target File
      [dex] Converting compiled files and external libraries into

   [crunch] Crunching PNG Files in source dir:
   [crunch] To destination dir: C:\herong\HelloAndroid\bin\res
   [crunch] Crunched 0 PNG files to update cache

     [aapt] Found Deleted Target File
     [aapt] Creating full resource package...

[apkbuilder] Found Deleted Target File
[apkbuilder] Creating HelloAndroid-debug-unaligned.apk and signing it
             with a debug key...


 [zipalign] Running zip align on final apk...
     [echo] Debug Package:
[propertyfile] Updating property file: C:\herong\HelloAndroid\bin\build.prop



Total time: 5 seconds

Here is what I see in the output:

Table of Contents

 About This Book

 Installing JDK 1.8 on Windows System

 Installation of Android SDK R24 and Emulator

 Installing Apache Ant 1.9 on Windows System

 Developing First Android Application - HelloAndroid

 Android Application Package (APK) Files

 Android Debug Bridge (adb) Tool

 Android File Systems

 AboutAndroid - Application to Retrieve System Information Class and Activity Lifecycle

 View Objects and Layout Resource Files

 Using "adb logcat" Command for Debugging

Build Process and Package File Content

 "android create project" Command Options

 Android Project Folder Structure

 Android Application Project Build Process

Project Build Process Done by "ant debug" Command

 Detailed Output of "ant -verbose debug" Command

 Output of "ant -verbose debug" - Android SDK R17

 "aapt" - Android Asset Packaging Tool

 "aapt package" Command - Resource Code Generation

 "javac" - Java Compilation Command

 "dx.bat --dex" Command - Converting .class Files into .dex File

 "apkbuilder" Command - Packaging and Signing .apk File

 "zipalign" Command - Aligning File Locations in .apk Package

 "aapt dump" Command - Printing Contents of .apk Package

 META-INF Files - Digests, Signature and Certificate

 Building Your Own Web Browser

 Android Command Line Shell

 Samsung Galaxy Tab 3 Mini Tablet

 USB Debugging Applications on Samsung Tablet

 Android Tablet - LG-V905R

 USB Debugging Applications on LG-V905R Tablet

 Android Phone - LG-P925g

 USB Debugging Applications on LG-P925g Phone

 Archived Tutorials


 Full Version in PDF/EPUB