將字符串轉換爲二進制

Question

我收到來自web服務的響應作爲json字符串，我希望它將該字符串轉換爲二進制。

有沒有辦法做到這一點？

Answer 1

char s[255] = "JSON String value"; 
//for each character, print it's binary aoutput 
int i,c,power; 
for (i=0 ; s[i]!='\0' ; i++) 
{ 
    //c holds the character being converted 
    c = s[i]; 
    //for each binary value below 256 (because ascii values < 256) 
    for (power=7 ; power+1 ; power--) 
    //if c is greater than or equal to it, it is a 1 
    if (c >= (1<<power)) 
    { 
    c -= (1<<power); //subtract that binary value 
    printf("1"); 
    } 
    //otherwise, it is a zero 
    else 
    printf("0"); 
} 

Answer 2

你可以使用dataUsingEnconding消息來自的NSString對象：

dataUsingEncoding: