how to resign the existed android system apps with a private key after modifing

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Sign Your App | Android Studio

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In this tutorial, we'll cover how to use SQLite database in iOS app. To give you a basic idea of SQLite, we'll build a sample iOS app together...www.appcoda.com/sqlite...  - 百度快照 - 翻译此页

SMP Primer for Android | Android Developers

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