iOS開發進制轉換
阿新 • • 發佈:2018-07-23
nss 轉換成 app hex int != class table 16進制
1、十進制轉換為二進制
/** 十進制轉換為二進制 @param decimal 十進制數 @return 二進制數 */ + (NSString *)getBinaryByDecimal:(NSInteger)decimal { NSString *binary = @""; while (decimal) { binary = [[NSString stringWithFormat:@"%ld", decimal % 2] stringByAppendingString:binary]; if (decimal / 2 < 1) { break; } decimal = decimal / 2 ; } if (binary.length % 4 != 0) { NSMutableString *mStr = [[NSMutableString alloc]init]; for (int i = 0; i < 4 - binary.length % 4; i++) { [mStr appendString:@"0"]; } binary = [mStr stringByAppendingString:binary]; } return binary; }
2、十進制轉換為十六進制
/** 將十進制轉化為十六進制 @param decimal 10進制 int類型 @return 16進制 */ + (NSString*)changDecimalToHex:(NSInteger)decimal { NSString* intDecimalStr = [[NSString alloc] initWithFormat:@"%1lx", (long)decimal]; NSString* hexString = [NSString stringWithFormat:@"%@", intDecimalStr]; if (hexString.length == 5) { return [[NSString stringWithFormat:@"0%@", hexString] uppercaseString]; } else { return [hexString uppercaseString]; } }
3、 二進制轉換為十六進制
/** 二進制轉換成十六進制 @param binary 二進制數 @return 十六進制數 */ + (NSString *)getHexByBinary:(NSString *)binary { NSMutableDictionary *binaryDic = [[NSMutableDictionary alloc] initWithCapacity:16]; [binaryDic setObject:@"0" forKey:@"0000"]; [binaryDic setObject:@"1" forKey:@"0001"]; [binaryDic setObject:@"2" forKey:@"0010"]; [binaryDic setObject:@"3" forKey:@"0011"]; [binaryDic setObject:@"4" forKey:@"0100"]; [binaryDic setObject:@"5" forKey:@"0101"]; [binaryDic setObject:@"6" forKey:@"0110"]; [binaryDic setObject:@"7" forKey:@"0111"]; [binaryDic setObject:@"8" forKey:@"1000"]; [binaryDic setObject:@"9" forKey:@"1001"]; [binaryDic setObject:@"A" forKey:@"1010"]; [binaryDic setObject:@"B" forKey:@"1011"]; [binaryDic setObject:@"C" forKey:@"1100"]; [binaryDic setObject:@"D" forKey:@"1101"]; [binaryDic setObject:@"E" forKey:@"1110"]; [binaryDic setObject:@"F" forKey:@"1111"]; if (binary.length % 4 != 0) { NSMutableString *mStr = [[NSMutableString alloc]init];; for (int i = 0; i < 4 - binary.length % 4; i++) { [mStr appendString:@"0"]; } binary = [mStr stringByAppendingString:binary]; } NSString *hex = @""; for (int i=0; i<binary.length; i+=4) { NSString *key = [binary substringWithRange:NSMakeRange(i, 4)]; NSString *value = [binaryDic objectForKey:key]; if (value) { hex = [hex stringByAppendingString:value]; } } return hex; }
4、十六進制轉二進制
/**
十六進制轉換為二進制
@param hexString 十六進制數
@return 二進制數
*/
+ (NSString *)getBinaryByHexString:(NSString *)hexString {
NSMutableDictionary *hexDic = [[NSMutableDictionary alloc] initWithCapacity:16];
[hexDic setObject:@"0000" forKey:@"0"];
[hexDic setObject:@"0001" forKey:@"1"];
[hexDic setObject:@"0010" forKey:@"2"];
[hexDic setObject:@"0011" forKey:@"3"];
[hexDic setObject:@"0100" forKey:@"4"];
[hexDic setObject:@"0101" forKey:@"5"];
[hexDic setObject:@"0110" forKey:@"6"];
[hexDic setObject:@"0111" forKey:@"7"];
[hexDic setObject:@"1000" forKey:@"8"];
[hexDic setObject:@"1001" forKey:@"9"];
[hexDic setObject:@"1010" forKey:@"A"];
[hexDic setObject:@"1011" forKey:@"B"];
[hexDic setObject:@"1100" forKey:@"C"];
[hexDic setObject:@"1101" forKey:@"D"];
[hexDic setObject:@"1110" forKey:@"E"];
[hexDic setObject:@"1111" forKey:@"F"];
NSString *binary = @"";
for (int i = 0; i < [hexString length]; i++) {
NSString *key = [hexString substringWithRange:NSMakeRange(i, 1)];
NSString *value = [hexDic objectForKey:key.uppercaseString];
if (value) {
binary = [binary stringByAppendingString:value];
}
}
return binary;
}
5、十六進制轉十進制
/**
將十六進制轉化為十進制
@param hexString 16進制 nsstring類型
@return 10進制
*/
+ (NSInteger)changHexToDecimal:(NSString*)hexString {
NSString* temp10 = [NSString stringWithFormat:@"%lu", strtoul([hexString UTF8String], 0, 16)];
int cycleNumber = [temp10 intValue];
return cycleNumber;
}
iOS開發進制轉換