objective-c – iOS彩虹阵列

我正在设置一个数组,在彩虹的颜色中有一个过渡.现在我只是手动输入数组中的颜色,但是有太多的手动键入…到目前为止,我从0.25到0.5到0.75到1等等,直到我从红色变成绿色到蓝色然后回来. (见下面的代码)如何让数组自动生成颜色超过0.25 – > 0.5? 0.75,但可以为0.05? 0.10 – > 0.15 – > 0.20等等,…这里是我的数组：

rainbowColors = [[NSArray alloc] initWithObjects:
                     [UIColor colorWithRed:1 green:0 blue:0 alpha:1],[UIColor colorWithRed:1 green:0.25 blue:0 alpha:1],[UIColor colorWithRed:1 green:0.5 blue:0 alpha:1],[UIColor colorWithRed:1 green:0.75 blue:0 alpha:1],[UIColor colorWithRed:1 green:1 blue:0 alpha:1],[UIColor colorWithRed:0.75 green:1 blue:0 alpha:1],[UIColor colorWithRed:0.5 green:1 blue:0 alpha:1],[UIColor colorWithRed:0.25 green:1 blue:0 alpha:1],[UIColor colorWithRed:0 green:1 blue:0 alpha:1],[UIColor colorWithRed:0 green:1 blue:0.25 alpha:1],[UIColor colorWithRed:0 green:1 blue:0.5 alpha:1],[UIColor colorWithRed:0 green:1 blue:0.75 alpha:1],[UIColor colorWithRed:0 green:1 blue:1 alpha:1],[UIColor colorWithRed:0 green:0.75 blue:1 alpha:1],[UIColor colorWithRed:0 green:0.5 blue:1 alpha:1],[UIColor colorWithRed:0 green:0.25 blue:1 alpha:1],[UIColor colorWithRed:0 green:0 blue:1 alpha:1],[UIColor colorWithRed:0.25 green:0 blue:1 alpha:1],[UIColor colorWithRed:0.5 green:0 blue:1 alpha:1],[UIColor colorWithRed:0.75 green:0 blue:1 alpha:1],[UIColor colorWithRed:1 green:0 blue:1 alpha:1],[UIColor colorWithRed:1 green:0 blue:0.75 alpha:1],[UIColor colorWithRed:1 green:0 blue:0.5 alpha:1],[UIColor colorWithRed:1 green:0 blue:0.25 alpha:1],nil];

NSMutableArray *colors = [NSMutableArray array];

float INCREMENT = 0.05;
for (float hue = 0.0; hue < 1.0; hue += INCREMENT) {
    UIColor *color = [UIColor colorWithHue:hue
                                saturation:1.0
                                brightness:1.0
                                     alpha:1.0];
    [colors addObject:color];
}