This code implements a simple play and pause music, novice beginner

Music
.....\.classpath
.....\.project
.....\.settings
.....\.........\org.eclipse.jdt.core.prefs
.....\AndroidManifest.xml
.....\assets
.....\bin
.....\...\AndroidManifest.xml
.....\...\classes
.....\...\classes.dex
.....\...\.......\hello
.....\...\.......\.....\music
.....\...\.......\.....\.....\Act1$1.class
.....\...\.......\.....\.....\Act1$2.class
.....\...\.......\.....\.....\Act1.class
.....\...\.......\.....\.....\Act2.class
.....\...\.......\.....\.....\BuildConfig.class
.....\...\.......\.....\.....\R$attr.class
.....\...\.......\.....\.....\R$dimen.class
.....\...\.......\.....\.....\R$drawable.class
.....\...\.......\.....\.....\R$id.class
.....\...\.......\.....\.....\R$layout.class
.....\...\.......\.....\.....\R$menu.class
.....\...\.......\.....\.....\R$raw.class
.....\...\.......\.....\.....\R$string.class
.....\...\.......\.....\.....\R$style.class
.....\...\.......\.....\.....\R.class
.....\...\dexedLibs
.....\...\.........\android-support-v4-528be665989ad74fe1d99d084002368f.jar
.....\...\.........\annotations-5fcd39b60cdffc981b709d3e645c4ae6.jar
.....\...\jarlist.cache
.....\...\Music.apk
.....\...\res
.....\...\resources.ap_
.....\...\...\drawable-hdpi
.....\...\...\.............\ic_launcher.png
.....\...\...\drawable-mdpi
.....\...\...\.............\ic_launcher.png
.....\...\...\drawable-xhdpi
.....\...\...\..............\ic_launcher.png
.....\...\...\drawable-xxhdpi
.....\...\...\...............\ic_launcher.png
.....\gen
.....\...\hello
.....\...\.....\music
.....\...\.....\.....\BuildConfig.java
.....\...\.....\.....\R.java
.....\ic_launcher-web.png
.....\libs
.....\....\android-support-v4.jar
.....\proguard-project.txt
.....\project.properties
.....\res
.....\...\drawable-hdpi
.....\...\.............\ic_launcher.png
.....\...\drawable-ldpi
.....\...\drawable-mdpi
.....\...\.............\ic_launcher.png
.....\...\drawable-xhdpi
.....\...\..............\ic_launcher.png
.....\...\drawable-xxhdpi
.....\...\...............\ic_launcher.png
.....\...\layout
.....\...\......\main.xml
.....\...\menu
.....\...\....\main.xml
.....\...\raw
.....\...\...\main.xml
.....\...\...\mymusic.mp3
.....\...\values
.....\...\values-sw600dp
.....\...\..............\dimens.xml
.....\...\values-sw720dp-land
.....\...\...................\dimens.xml
.....\...\......\dimens.xml
.....\...\......\strings.xml
.....\...\......\styles.xml
.....\src
.....\...\hello
.....\...\.....\music
.....\...\.....\.....\Act1.java
.....\...\.....\.....\Act2.java

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