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android - Environment.getExternalStorageDirectory() returns null int AndroidTestCase - Stack Overflow
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External Storage Tutorial In Android Studio With Example | Android Database Tutorial In Android Studio: Store Your Data
Add support for external storage(Sd Card, USB Storage etc) in flutter. · Issue #40504 · flutter/flutter · GitHub
![External Storage Tutorial In Android Studio With Example | Android Database Tutorial In Android Studio: Store Your Data External Storage Tutorial In Android Studio With Example | Android Database Tutorial In Android Studio: Store Your Data](https://abhiandroid.com/database/wp-content/uploads/2017/03/External-Storage-Example-In-android-Studio.gif)