我使用下面的代码动态创建了一个带有图像的 UISlider,但生成的 UI 仅显示默认的 UISlider。请任何人告诉我,为什么图像没有显示在滑块上。(UISlider 加载在 UIView 类上,该类也是动态创建的)
self.slider = [[UISlider alloc] initWithFrame:CGRectMake(40.0, 0.0, self.frame.size.width * 80.0/100.0, frame.size.height)];
self.slider.minimumValue = minValue;
self.slider.maximumValue = maxValue;
self.slider.backgroundColor = [UIColor clearColor];
[self.slider setThumbImage:[UIImage imageNamed:@"slider_tab.png"]
forState:UIControlStateNormal];
[self.slider setThumbImage:[UIImage imageNamed:@"slider_tab.png"]
forState:UIControlStateHighlighted];
[self.slider setMinimumTrackImage:[UIImage imageNamed:@"slider_minimum.png"]
forState:UIControlStateNormal];
[self.slider setMaximumTrackImage:[UIImage imageNamed:@"slider_maximum.png"]
forState:UIControlStateNormal];
self.slider.continuous = NO;
[self.slider addTarget:self action:@selector(SliderChanged:) forControlEvents:UIControlEventValueChanged];
[self addSubview:self.slider];
提前致谢。