xcode - UISegmentedControl 中的图像是蓝色的？

Question

我想将图像放入 UISegmentedControl 项目，但我的图像是蓝色的，无法正常显示？这是我的代码:

NSArray *segments = [[NSArray alloc] initWithObjects:
                         [UIImage imageNamed:@"iphone1.png"],
                         @"iPad",
                         @"iPod",
                         @"iMac", nil];
    self.mySegmentedControl = [[UISegmentedControl alloc] initWithItems:segments];
    CGRect segmentedFrame = self.mySegmentedControl.frame;
    segmentedFrame.size.height = 64.0f;
    segmentedFrame.size.width = 300.0f;
    self.mySegmentedControl.frame = segmentedFrame;
    self.mySegmentedControl.center = self.view.center;
    [self.view addSubview:self.mySegmentedControl]; 

第一段是一张iphone图片。

Answer 1

这是 ios7 的更改。现在 UISegmentedControl 使用自身的色调来改变图像的色调，因此您必须以其原始模式渲染图像。

UIImage* iPhoneImage = [UIImage imageNamed:@"iphone1.png"];
if (//Device is iOS7 or higher) {
    iPhoneImage = [iPhoneImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
}

NSArray *segments = [[NSArray alloc] initWithObjects:
                     iPhoneImage,
                     @"iPad",
                     @"iPod",
                     @"iMac", nil];