how to check internal and external storage if exist

Question

How do i know if there are internal and external storage in android pragmatically? does anyone how to know how to check both internal and external storage

thanks in

Answer 1

I wrote a little class for that checking the storage state. Maybe it's of some use for you.

UPDATE: Cleaned up code, removed comments and made class static.

import android.os.Environment;

public class StorageHelper {

    private static boolean externalStorageReadable, externalStorageWritable;

    public static boolean isExternalStorageReadable() {
        checkStorage();
        return externalStorageReadable;
    }

    public static boolean isExternalStorageWritable() {
        checkStorage();
        return externalStorageWritable;
    }

    public static boolean isExternalStorageReadableAndWritable() {
        checkStorage();
        return externalStorageReadable && externalStorageWritable;
    }

    private static void checkStorage() {
        String state = Environment.getExternalStorageState();
        if (state.equals(Environment.MEDIA_MOUNTED)) {
            externalStorageReadable = externalStorageWritable = true;
        } else if (state.equals(Environment.MEDIA_MOUNTED) || state.equals(Environment.MEDIA_MOUNTED_READ_ONLY)) {
            externalStorageReadable = true;
            externalStorageWritable = false;
        } else {
            externalStorageReadable = externalStorageWritable = false;
        }
    }

}