输入输出界面
............\.classpath
............\.project
............\.settings
............\.........\org.eclipse.jdt.core.prefs
............\AndroidManifest.xml
............\assets
............\bin
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............\...\Lesson54.apk
............\...\classes
............\...\.......\com
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............\...\.......\...\.......\........\RegisterActivity$button2OnClickListener.class
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............\...\classes.dex
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............\...\...\crunch
............\...\...\......\drawable-hdpi
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............\...\resources.ap_
............\gen
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............\...\...\.......\........\BuildConfig.java
............\...\...\.......\........\R.java
............\ic_launcher-web.png
............\libs
............\....\android-support-v4.jar
............\proguard-project.txt
............\project.properties
............\res
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............\...\values
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............\...\values-sw600dp
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............\...\values-sw720dp-land
............\...\...................\dimens.xml
............\...\values-v11
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............\src
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............\...\...\example
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............\...\...\.......\........\MainActivity.java
............\...\...\.......\........\RegisterActivity.java