[英]Calculate ARGB Integer out of HTML Hex color
有人可以告訴我如何從Java中的HTML十六進制顏色獲取此ARGB整數值嗎?
它是一個8位數的值,顯然可能是負數!
非常感謝你!
MatrixToImageConfig(-10223615,-1)
public static void main(String[] args) {
//same colors
String hex = "#ffffff00";
Color color = new Color(255,255,255,0);
//4294967040
System.out.println(Long.decode(hex));
//16777215
System.out.println(toRGBA(hex));
//16777215
System.out.println(color.getRGB());
//-16711681
System.out.println(toARGB(hex));
}
public static int toRGBA(String nm) {
Long intval = Long.decode(nm);
long i = intval.intValue();
int a = (int) ((i >> 24) & 0xFF);
int r = (int) ((i >> 16) & 0xFF);
int g = (int) ((i >> 8) & 0xFF);
int b = (int) (i & 0xFF);
return ((b & 0xFF) << 24) |
((g & 0xFF) << 16) |
((r & 0xFF) << 8) |
((a & 0xFF) << 0);
}
public static int toARGB(String nm) {
Long intval = Long.decode(nm);
long i = intval.intValue();
int a = (int) ((i >> 24) & 0xFF);
int r = (int) ((i >> 16) & 0xFF);
int g = (int) ((i >> 8) & 0xFF);
int b = (int) (i & 0xFF);
return ((a & 0xFF) << 24) |
((b & 0xFF) << 16) |
((g & 0xFF) << 8) |
((r & 0xFF) << 0);
}
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