iphone - 如何从带有标签和颜色对象的方法中选择随机颜色？

Question

尝试从这三种定义的颜色属性中运行随机颜色，

int num1 = rand() %3;
color1= [UIColor colorWithRed:0.5/num1 green:0.7/num1 blue:0.5/num1 alpha:1.0];
[self setColor:color1 setLabel:label1];

int num2 = rand() %3;
color2 = [UIColor colorWithRed:0.5/num2 green:0.7/num2 blue:0.5/num2 alpha:1.0];
[self setColor:color2 setLabel:label2];

int num3 = rand() %3;
color3= [UIColor colorWithRed:0.5/num3 green:0.7/num3 blue:0.5/num3 alpha:1.0];
[self setColor:color3 setLabel:label3];

尝试从颜色对象(标签对象)生成随机颜色。

想要为整个颜色变量放置random()，而不仅仅是属性。我怎样才能做到这一点。提前致谢

Answer 1

您应该随机更改rgb值...。

color1= [self getRandomColor];                
[self setColor:color1 setLabel:firstColorObject];
color2 = [self getRandomColor];;
[self setColor:color2 setLabel:secondColorObject];
color3= [self getRandomColor];
[self setColor:color3 setLabel:thirdColorObject];

方法定义:

-(UIColor *)getRandomColor{
    UIColor *color;
    float randomRed = rand()%3;//3:you can write any number as you wish...
    float randomGreen =rand()%2;//2:you can write any number as you wish...
    float randomBlue =rand()%4;//4:you can write any number as you wish...
    color= [UIColor colorWithRed:randomRed green:randomGreen blue:randomBlue alpha:1.0];
    return color;
}