I need to convert a string of 8-character hexadecimal substrings into a list of integers.
For example, I might have the string
001479B70054DB6E001475B3
which consists of the following substrings
001479B7 // 1341879 decimal
0054DB6E // 5561198 decimal
001475B3 // 1340851 decimal
I'm currently using convert.hex
to first convert the strings into a list of 4 integers (because convert.hex
only handles parsing 2-character hex strings) and then adding/multiplying those up:
String tmp;
for(int i=0; i<=myHexString.length-8; i+=8){
tmp = myHexString.substring(i, i+8);
List<int> ints = hex.decode(tmp);
int dec = ints[3]+(ints[2]*256+(ints[1]*65536)+(ints[0]*16777216));
}
Is there a more efficient way to do this?
Steps to use Hexadecimal (Hex) Color Code Strings in FlutterStep 1: Remove the # sign. Step 2: Add 0xFF at the beginning of the color code. Step 3: Place it inside the Color class like this Color(0xFFbfeb91).
You can use int.parse('001479B7', radix: 16);
https://api.dartlang.org/stable/2.4.1/dart-core/int/parse.html
so your code will look like this :
void main() {
final fullString = '001479B70054DB6E001475B3';
for (int i = 0; i <= fullString.length - 8; i += 8) {
final hex = fullString.substring(i, i + 8);
final number = int.parse(hex, radix: 16);
print(number);
}
}
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