我正在尝试在UISlider上动态配置轨道颜色.
这行代码非常适合设置滑块轨道的低侧.
[self.sliderBar setMinimumTrackTintColor:[UIColor redColor]];
当尝试对滑块轨道的高端做同样的事情时,这行代码会向调试日志报告3个致命错误.
[self.sliderBar setMaximumTrackTintColor:[UIColor redColor]];
<Error>: CGContextAddPath: invalid context 0x0. This is a serious error. This application, or a library it uses, is using an invalid context and is thereby contributing to an overall degradation of system stability and reliability. This notice is a courtesy: please fix this problem. It will become a fatal error in an upcoming update.
<Error>: clip: invalid context 0x0. This is a serious error. This application, or a library it uses, …