I need to create an SD Card image file for an Android emulator that I am running. Given that I am a beginner at Android development, a complete step-by-step tutorial would be awesome.
There is a command line program for doing that called mksdcard: https://developer.android.com/studio/command-line/mksdcard.html
There are already SD Card image files for use with the emulator installed.
If you create an AVD then choose a file path for the SD Card
on My Machine the file path is:
C:\Users\Samir\.android\avd\Android2.2.avd\sdcard
Then, click 'Ok' and save the changes, then this will emulate an SD Card when you run the use the AVD in the Emulator
Can someone please tell me how to do that.
In the AVD Manager, when you create an AVD, fill in a positive integer in the "SD Card" field. This is the size of your SD card in MB.
When you create an emulator there is an Option for SD Card : You can select a file where you want ur SD card, or you can also give size for SD card, so that it will create and SD card image for you on the default android emulator location.
You can Google search before and find this: http://www.androiddevelopment.org/2008/11/11/how-to-create-and-use-the-sd-card-with-the-android-emulator/
来源：https://stackoverflow.com/questions/10754195/how-to-create-an-sd-card-image-file-for-the-android-emulator