Help ~ android development, various big rookie seeking God help

android java mobile development

Andrews company wants to develop, but I was a novice.
How to pack the contents of APK software modification? I'll change the icon, but the page does not change the content inside ah! ! !
And there is no source of it, decompile out the source does not take ah, seeking help from various quarters Great God! <-! Main posts under Banner (D4) -><-! Posts under the main text (D5) ->
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[fans] apk crack crack on the android app-related technology