Andrews developed a very good source, helped me particularly, I recommend using

GridAndImageSwitcherSample\.classpath
..........................\.project
..........................\AndroidManifest.xml
..........................\bin\classes\tjuci\edu\dl\GridAndImageSwitcherSampleActivity$1.class
..........................\...\.......\.....\...\..\GridAndImageSwitcherSampleActivity$2.class
..........................\...\.......\.....\...\..\GridAndImageSwitcherSampleActivity$3.class
..........................\...\.......\.....\...\..\GridAndImageSwitcherSampleActivity.class
..........................\...\.......\.....\...\..\R$attr.class
..........................\...\.......\.....\...\..\R$drawable.class
..........................\...\.......\.....\...\..\R$id.class
..........................\...\.......\.....\...\..\R$layout.class
..........................\...\.......\.....\...\..\R$string.class
..........................\...\.......\.....\...\..\R.class
..........................\...\classes.dex
..........................\...\GridAndImageSwitcherSample.apk
..........................\...\res\drawable-hdpi\ic_launcher.png
..........................\...\...\.........ldpi\ic_launcher.png
..........................\...\...\.........mdpi\ic_launcher.png
..........................\...\resources.ap_
..........................\gen\tjuci\edu\dl\R.java
..........................\proguard.cfg
..........................\project.properties
..........................\res\drawable-hdpi\ic_launcher.png
..........................\...\.........ldpi\ic_launcher.png
..........................\...\.........mdpi\ic_launcher.png
..........................\...\.............\q1.jpg
..........................\...\.............\q10.jpg
..........................\...\.............\q11.jpg
..........................\...\.............\q12.jpg
..........................\...\.............\q2.jpg
..........................\...\.............\q3.jpg
..........................\...\.............\q4.jpg
..........................\...\.............\q5.jpg
..........................\...\.............\q6.jpg
..........................\...\.............\q7.jpg
..........................\...\.............\q8.jpg
..........................\...\.............\q9.jpg
..........................\...\layout\image.xml
..........................\...\......\main.xml
..........................\...\values\strings.xml
..........................\src\tjuci\edu\dl\GridAndImageSwitcherSampleActivity.java
..........................\bin\classes\tjuci\edu\dl
..........................\...\.......\.....\edu
..........................\gen\tjuci\edu\dl
..........................\src\tjuci\edu\dl
..........................\bin\classes\tjuci
..........................\...\res\drawable-hdpi
..........................\...\...\drawable-ldpi
..........................\...\...\drawable-mdpi
..........................\gen\tjuci\edu
..........................\src\tjuci\edu
..........................\bin\classes
..........................\...\res
..........................\gen\tjuci
..........................\res\drawable-hdpi
..........................\...\drawable-ldpi
..........................\...\drawable-mdpi
..........................\...\layout
..........................\...\values
..........................\src\tjuci
..........................\assets
..........................\bin
..........................\gen
..........................\res
..........................\src
GridAndImageSwitcherSample

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