File list (Check if you may need any files):
实习DAY2\.classpath
........\.project
........\4种时间.png
........\AndroidManifest.xml
........\ayny.jpg
........\ic_launcher-web.png
........\proguard-project.txt
........\project.properties
........\src1.jpg
........\src2.jpg
........\tuwp.jpg
........\uyhh.jpg
........\单选.png
........\多选.jpg
........\学生作业图片.jpg
........\整体效果.jpg
........\沈阳你好.jpg
........\注册帐号.jpg
........\点击事件.jpg
........\.settings\org.eclipse.jdt.core.prefs
........\bin\AndroidManifest.xml
........\...\classes.dex
........\...\Day2.apk
........\...\jarlist.cache
........\...\R.txt
........\...\resources.ap_
........\...\classes\android\support\v7\appcompat\R$anim.class
........\...\.......\.......\.......\..\.........\R$attr.class
........\...\.......\.......\.......\..\.........\R$bool.class
........\...\.......\.......\.......\..\.........\R$color.class
........\...\.......\.......\.......\..\.........\R$dimen.class
........\...\.......\.......\.......\..\.........\R$drawable.class
........\...\.......\.......\.......\..\.........\R$id.class
........\...\.......\.......\.......\..\.........\R$integer.class
........\...\.......\.......\.......\..\.........\R$layout.class
........\...\.......\.......\.......\..\.........\R$string.class
........\...\.......\.......\.......\..\.........\R$style.class
........\...\.......\.......\.......\..\.........\R$styleable.class
........\...\.......\.......\.......\..\.........\R.class
........\...\.......\com\example\day2\ActivityChangeImage$1.class
........\...\.......\...\.......\....\ActivityChangeImage$2.class
........\...\.......\...\.......\....\ActivityChangeImage$3.class
........\...\.......\...\.......\....\ActivityChangeImage.class
........\...\.......\...\.......\....\BuildConfig.class
........\...\.......\...\.......\....\MainActivity$PlaceholderFragment.class
........\...\.......\...\.......\....\MainActivity.class
........\...\.......\...\.......\....\MyActivity.class
........\...\.......\...\.......\....\R$anim.class
........\...\.......\...\.......\....\R$attr.class
........\...\.......\...\.......\....\R$bool.class
........\...\.......\...\.......\....\R$color.class
........\...\.......\...\.......\....\R$dimen.class
........\...\.......\...\.......\....\R$drawable.class
........\...\.......\...\.......\....\R$id.class
........\...\.......\...\.......\....\R$integer.class
........\...\.......\...\.......\....\R$layout.class
........\...\.......\...\.......\....\R$menu.class
........\...\.......\...\.......\....\R$string.class
........\...\.......\...\.......\....\R$style.class
........\...\.......\...\.......\....\R$styleable.class
........\...\.......\...\.......\....\R.class
........\...\.......\...\.......\....\YourActivity.class
........\...\dexedLibs\android-support-v4-f44c45f01d2ae3f48ffb11c70b6223f7.jar
........\...\.........\android-support-v7-appcompat-e8c4965b5717a310107fa5cc16ab5bb7.jar
........\...\.........\appcompat_v7-b6333619cedc21d9ca31dcbb2573d834.jar
........\...\res\crunch\drawable-hdpi\ic_launcher.png
........\...\...\......\.........mdpi\ic_launcher.png
........\...\...\......\.........xhdpi\ic_launcher.png
........\...\...\......\..........xhdpi\ic_launcher.png
........\gen\android\support\v7\appcompat\R.java
........\...\com\example\day2\BuildConfig.java
........\...\...\.......\....\R.java
........\libs\android-support-v4.jar
........\res\drawable\ayny.jpg
........\...\........\tuwp.jpg
........\...\........\uyhh.jpg
........\...\........-hdpi\ic_launcher.png
........\...\.........mdpi\ic_launcher.png
........\...\.........xhdpi\ic_launcher.png
........\...\..........xhdpi\ic_launcher.png
........\...\layout\activity_main.xml
........\...\......\activity_my.xml
........\...\......\change_image.xml
........\...\......\fragment_main.xml
........\...\......\register.xml
........\...\menu\main.xml
........\...\values\dimens.xml
........\...\......\strings.xml
........\...\......\styles.xml
........\...\......-v11\styles.xml
........\...\.........4\styles.xml
........\...\.......w820dp\dimens.xml
........\src\com\example\day2\ActivityChangeImag