Working with external storage

External storage is used to create and access non-private, shared, world-readable files. Shared external storage is supported by all Android devices. The first thing you need to start using external storage is its permission.

Getting external storage permission

The READ_EXTERNAL_STORAGE and WRITE_EXTERNAL_STORAGE permissions must be acquired by your application before it can make use of external storage APIs. READ_EXTERNAL_STORAGE is necessary when you only need to read from external storage. The WRITE_EXTERNAL_STORAGE permission is necessary when your application requires the ability to write directly to external storage.

These two permissions can be added with ease to the manifest file, as we...