Android programming to judge whether SD card exists and the implementation method of using capacity query

This paper describes the implementation method of judging whether SD card exists and using capacity query by Android programming. Share with you for your reference, as follows:

1. Judge whether the SD card exists. Return true to indicate it exists

2. Obtain the available space of SD card

3. Obtain all space of SD card

I hope this article will help you in Android programming.

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