ios - iOS 中的 EFCircularSlider

Question

我正在使用 EFCircularSlider 显示圆形 slider 。

这是我的代码

EFCircularSlider *circularSlider = [[EFCircularSlider alloc] initWithFrame:CGRectMake(0, 0, _myView.frame.size.width, _myView.frame.size.height)];

[circularSlider addTarget:self action:@selector(valueChanged:) forControlEvents:UIControlEventValueChanged];

circularSlider.lineWidth = 50;
[self.sliderView addSubview:circularSlider];

现在圆圈正在正常出现，我想让圆圈的中间空间充当 UIButton。我们如何在中间添加按钮？任何帮助表示赞赏。提前致谢。

Answer 1

您可以在圆形 slider 的中心添加按钮。

CGRect sliderFrame = CGRectMake(60, 150, 200, 200);
EFCircularSlider* circularSlider = [[EFCircularSlider alloc] initWithFrame:sliderFrame];
circularSlider.lineWidth = 50;
[self.view addSubview:circularSlider];

UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
btn.frame = CGRectMake(sliderFrame.origin.x + 50, sliderFrame.origin.y + 50, 100, 100);
btn.layer.cornerRadius = 50.0;
btn.backgroundColor = [UIColor greenColor];
[btn addTarget:self action:@selector(btn_tap:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:btn];