UISegmentControl 、UIStepper

• UISegmentControl

1.    UISegmentedControl *segmentControl = [[UISegmentedControl alloc] initWithItems:@[@"1",@"2",@"3",@"4"]];2.segmentControl.frame = (CGRect){50,100,100,50};

等同于

1.    UISegmentedControl *segmentControl = [[UISegmentedControl alloc]2.                                          initWithFrame:CGRectMake(50, 100, 100, 50)];3.4.    [segmentControl insertSegmentWithTitle:@"1" atIndex:0 animated:YES];5.    [segmentControl insertSegmentWithTitle:@"2" atIndex:1 animated:YES];6.    [segmentControl insertSegmentWithTitle:@"3" atIndex:2 animated:YES];7.    [segmentControl insertSegmentWithTitle:@"4" atIndex:3 animated:YES];

其监听事件是值改变事件

1.    [segmentControl addTarget:self action:@selector(valueChange:)2.             forControlEvents:UIControlEventValueChanged];

1.-(void)valueChange:(UISegmentedControl *)sender{2.3.    UIColor *red = [UIColor redColor];4.    UIColor *green = [UIColor purpleColor];5.    UIColor *purple = [UIColor greenColor];6.    UIColor *gray = [UIColor grayColor];7.8.    NSArray *array = @[red,green,purple,gray];9.10.    NSInteger index = sender.selectedSegmentIndex;11.    self.view.backgroundColor = array[index];12.}

• UIStepper
  • 简单了解一些属性

    1.@property(nonatomic) double value;                        // default is 0. sends UIControlEventValueChanged. clamped to min/max2.@property(nonatomic) double minimumValue;                 // default 0. must be less than maximumValue3.@property(nonatomic) double maximumValue;                 // default 100. must be greater than minimumValue4.@property(nonatomic) double stepValue;                    // default 1. must be greater than 05.