相关疑难解决方法(0)

我有一个CAGradientLayer插入到应用程序底部弹出的这个小细节视图的底部.正如你所看到的,我将颜色从白色设置为清晰,但是出现了这种奇怪的灰色色调.有任何想法吗？

    // Set up detail view frame and gradient
    [self.detailView setFrame:CGRectMake(0, 568, 320, 55)];

    CAGradientLayer *layer = [CAGradientLayer layer];
    layer.frame = self.detailView.bounds;
    layer.colors = [NSArray arrayWithObjects:(id)[UIColor whiteColor].CGColor, (id)[UIColor clearColor].CGColor, nil];
    layer.startPoint = CGPointMake(1.0f, 0.7f);
    layer.endPoint = CGPointMake(1.0f, 0.0f);
    [self.detailView.layer insertSublayer:layer atIndex:0];

这是有问题的观点: