ios - 自定义 View 的渐变颜色

Question

我在 UIViewController 中创建了 3 个自定义 View 。在每个自定义 View 中，我都使用 CAShapeLayer 创建了形状。

这些图层还包含渐变色。现在我想将渐变颜色设置为自定义 View 。当我尝试这样做时，它正在崩溃。对于第一个 View ，这里是代码:

//first component
    self.aTimeScaleMonthView = [[TimeScaleView alloc] initWithFrame:CGRectMake(ORIGIN_X, frame.origin.y, frame.size.width-(2*ORIGIN_X), HEIGHT_OF_COMPONENT1) withStartDate:startDate endDate:endDate];
    self.aTimeScaleMonthView.modeOfScale = A3TimeScaleMonth;
    self.aTimeScaleMonthView.layer.borderColor = [UIColor blackColor].CGColor;
    self.aTimeScaleMonthView.layer.borderWidth = BORDER_WIDTH_BOX;

    CAGradientLayer *gradient = [CAGradientLayer layer];
    gradient.frame = self.aTimeScaleMonthView.bounds;
    gradient.colors = [NSArray arrayWithObjects:[UIColor colorWithRed:0.66 green:0.29 blue:0.22 alpha:1.0], [UIColor colorWithRed:0.62 green:0.51 blue:0.314 alpha:1.0], nil];

    [self.aTimeScaleMonthView.layer insertSublayer:gradient atIndex:0];
    [self addSubview: self.aTimeScaleMonthView];

请帮帮我。

Answer 1

渐变色应该是 CGColor: gradient.colors = [NSArray arrayWithObjects:(id)[UIColor colorWithRed:0.66 green:0.29 blue:0.22 alpha:1.0].CGColor, (id )[UIColor colorWithRed:0.62 green:0.51 blue:0.314 alpha:1.0].CGColor, nil];

顺便说一句，您忘记设置渐变的起点和终点。