Android implements the method to obtain the total capacity, available size, total memory capacity and available size of SD card

This paper describes the method of Android to obtain the total capacity, available size, total memory capacity and available size of SD card. Share with you for your reference, as follows:

Some students may not know that the system has provided a system method to obtain the total capacity, available size, total memory capacity and available size of SD card. The method provided by the system source code can be very simple and convenient to obtain its size. Here I post a method in the system source code for your reference:

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The code in the red box on the picture is the program method to obtain the SD card size in the source code. I've sorted it out here. I'll post my method of sorting and packaging to you:

I hope this article will help you in Android programming.