详解iOS App中UISwitch开关组件的基本创建及使用方法

(void)viewDidLoad 
{ 
    [super viewDidLoad]; 
    UISwitch *switchButton = [[UISwitch alloc] initWithFrame:CGRectMake(50, 100, 20, 10)]; 
    [switchButton setOn:YES]; 
    [switchButton addTarget:self action:@selector(switchAction:) forControlEvents:UIControlEventValueChanged]; 
    [self.view addSubview:switchButton]; 

    // Do any additional setup after loading the view, typically from a nib. 
} 
[switchButton addTarget:selfaction:@selector(switchAction:)forControlEvents:UIControlEventValueChanged];

(void)switchAction:(id)sender 
{ 
    UISwitch *switchButton = (UISwitch*)sender; 
    BOOL isButtonOn = [switchButton isOn]; 
    if (isButtonOn) { 
        showSwitchValue.text = @"是"; 
    }else { 
        showSwitchValue.text = @"否"; 
    } 
}

(IBAction)switchAction:(id)sender { 
    UISwitch *switchButton = (UISwitch*)sender; 
    BOOL isButtonOn = [switchButton isOn]; 
    if (isButtonOn) { 
        showSwitchValue.text = @"是"; 
    }else { 
        showSwitchValue.text = @"否"; 
    } 
} 

#import

@interface UISwitch (tagged)
+ (UISwitch *) switchWithLeftText: (NSString *) tag1 andRight: (NSString *) tag2;
@property (nonatomic, readonly) UILabel *label1;
@property (nonatomic, readonly) UILabel *label2;
@end

#import "UISwitch-Extended.h"

#define TAG_OFFSET 900

@implementation UISwitch (tagged)
- (void) spelunkAndTag: (UIView *) aView withCount:(int *) count
{
 for (UIView *subview in [aView subviews])
 {
 if ([subview isKindOfClass:[UILabel class]])
 {
 *count += 1;
 [subview setTag:(TAG_OFFSET + *count)];
 }
 else
 [self spelunkAndTag:subview withCount:count];
 }
}

- (UILabel *) label1
{
 return (UILabel *) [self viewWithTag:TAG_OFFSET + 1];
}

- (UILabel *) label2
{
return (UILabel *) [self viewWithTag:TAG_OFFSET + 2];
}

+ (UISwitch *) switchWithLeftText: (NSString *) tag1 andRight: (NSString *) tag2
{
 UISwitch *switchView = [[UISwitch alloc] initWithFrame:CGRectZero];

int labelCount = 0;
[switchView spelunkAndTag:switchView withCount:&labelCount];

if (labelCount == 2)
{
[switchView.label1 setText:tag1];
[switchView.label2 setText:tag2];
}

return [switchView autorelease];
}

@end

UISwitch *isFooOrBar=[[UISwitch alloc] init];

((UILabel )[[[[[[isFooOrBar subviews] lastObject] subviews] objectAtIndex:2] subviews]objectAtIndex:0]).text = @"Foo";
((UILabel *)[[[[[[isFooOrBar subviews] lastObject] subviews] objectAtIndex:2] subviews]objectAtIndex:1]).text = @"Bar";*

BOOL setting =  switchView.isOn;
NSLog(@"%d",setting);

[switchView setOn:setting animated:YES];

switchView.onTintColor = [UIColor orangeColor];

switchView.thumbTintColor = [UIColor redColor];

switchView.tintColor = [UIColor purpleColor];

[switchView addTarget:self action:@selector(switchAction:) forControlEvents:UIControlEventValueChanged];