如何将UIColor转换为Android颜色(packed int)？

Question

我已经在移动开发方面做了很多事情,我自己搞清楚事情,但是我很难解决这个问题......

我正在使用此宏将Android color(packed int)转换为UIColor:

#define ANDROID_COLOR(c) [UIColor colorWithRed:((c>>16)&0xFF)/255.0 green:((c>>8)&0xFF)/255.0 blue:((c)&0xFF)/255.0  alpha:((c>>24)&0xFF)/255.0]

但是我还需要将UIColor转换为Android颜色.很感谢任何形式的帮助!

Answer 1

这样的事情(未经测试)应该有效:

UIColor *color =  // your color
CGFloat red, green, blue, alpha;

if (![color getRed:&red green:&green blue:&blue alpha:&alpha]) {

    CGFloat white;
    if ([color getWhite:&white alpha:&alpha]) {
        red = green = blue = white;
    } else {
        NSLog(@"Uh oh, not RGB or greyscale");
    }
}

long r = red * 255;
long g = green * 255;
long b = blue * 255;
long a = alpha * 255;
long packed_color = (r << 16) | (g << 8) | (b) | (a << 24);

这似乎与您在问题中显示的内容相反.