I am developing an android application and I need to know how could i check if the sdcard exist or not before exporting a file to it , so that i could notify the user that the sdcard is or isn't mounted.

有帮助吗?

解决方案

public boolean hasSDCard() {
    return android.os.Environment.getExternalStorageState()
              .equals(android.os.Environment.MEDIA_MOUNTED);
}
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