iphone slider滑动控件

来源：互联网发布：逆向 java web 编辑：程序博客网时间：2024/05/19 11:45

。声明：

UILabel *_sliderLabel;

UISlider *_slider;

。创建：

_sliderLabel = [[UILabelalloc]initWithFrame:CGRectMake(10,_startY,20, 20)];

[_sliderLabelsetTextColor:[UIColordarkGrayColor]];

[_sliderLabelsetBackgroundColor:[UIColorclearColor]];

_sliderLabel.text = @"50";

[_sliderLabelsizeToFit];

_slider = [[UISlideralloc]initWithFrame:CGRectMake(50,_startY,220, 6)];

[_slidersetMaximumValue:100];

[_slidersetMinimumValue:0];

[_slidersetValue:50];

[_slideraddTarget:selfaction:@selector(sliderValueChange)forControlEvents:UIControlEventValueChanged];

。回调函数

-(void)sliderValueChange{

int sliderValue = (int)(_slider.value+0.5f);

NSString *value = [NSStringstringWithFormat:@"%d", sliderValue];

_sliderLabel.text = value;

[_sliderLabelsizeToFit];

}

。在viewLoad函数中加载：

[self.viewaddSubview:_sliderLabel];

[self.viewaddSubview:_slider];

。释放

[_sliderLabelrelease];

[_sliderrelease];