自定义uislider 样式
UIImage *stetchLeftTrack= [[UIImage imageNamed:@"UI27.png"] stretchableImageWithLeftCapWidth:10.0 topCapHeight:0.0];?
????UIImage *stetchRightTrack = [[UIImage imageNamed:@"UI28.png"] stretchableImageWithLeftCapWidth:10.0 topCapHeight:0.0];
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????sliderA=[[UISlider alloc]initWithFrame:CGRectMake(110, 60, 208, 23)];
????sliderA.backgroundColor = [UIColor clearColor];?
????sliderA.value=lightExtend;
????sliderA.minimumValue=0.0;
????sliderA.maximumValue=0.9;
????
????[sliderA setMinimumTrackImage:stetchLeftTrack forState:UIControlStateNormal];
????[sliderA setMaximumTrackImage:stetchRightTrack forState:UIControlStateNormal];
????[view addSubview:sliderA];?
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