NSStringRandomEncoding

gistfile1.m

NSStringEncoding NSStringRandomEncoding(void) {
    const NSStringEncoding *encodings = [NSString availableStringEncodings];
    NSStringEncoding currentEncoding = encodings[0];
    NSUInteger count = 0;
    while (currentEncoding != 0x0) {
        count += 1;
        currentEncoding = encodings[count];
    }
    return encodings[arc4random_uniform(count)];
}