IOS自定义UISwitch-创新互联

#import

// 该方法时SDK文档中没有的， 添加一个category

@interface UISwitch (extended)

- (void) setAlternateColors:(BOOL) boolean;

@end

// 自定义Slider 类

@interface _UISwitchSlider : UIView

@end

@interface UICustomSwitch : UISwitch {

}

- (void) setLeftLabelText:(NSString *)labelText

           font:(UIFont*)labelFont

          color: (UIColor *)labelColor;

- (void) setRightLabelText:(NSString *)labelText

           font:(UIFont*)labelFont

           color:(UIColor *)labelColor;

- (UILabel*) createLabelWithText:(NSString*)labelText

              font:(UIFont*)labelFont

              color:(UIColor*)labelColor;

@end

#import "UICustomSwitch.h"

@implementation UICustomSwitch

- (id)initWithFrame:(CGRect)frame {

  if (self = [super initWithFrame:frame]) {

    // Initialization code

  }

  return self;

}

- (void)drawRect:(CGRect)rect {

  // Drawing code

}

- (void)dealloc {

  [super dealloc];

}

- (_UISwitchSlider *) slider {

  return [[self subviews] lastObject];

}

- (UIView *) textHolder {

  return [[[self slider] subviews] objectAtIndex:2];

}

- (UILabel *) leftLabel {

  return [[[self textHolder] subviews] objectAtIndex:0];

}

- (UILabel *) rightLabel {

  return [[[self textHolder] subviews] objectAtIndex:1];

}

// 创建文本标签

- (UILabel*) createLabelWithText:(NSString*)labelText

              font:(UIFont*)labelFont

              color:(UIColor*)labelColor

{

  CGRect rect = CGRectMake(-25.0f, -10.0f, 50.0f, 20.0f);

  UILabel *label = [[UILabel alloc] initWithFrame: rect];

  label.text = labelText;

  label.font = labelFont;

  label.textColor = labelColor;

  label.textAlignment = UITextAlignmentCenter;

  label.backgroundColor = [UIColor clearColor];

  return label;

}

// 重新设定左边的文本标签

- (void) setLeftLabelText:(NSString *)labelText

           font:(UIFont*)labelFont

          color:(UIColor *)labelColor

{

  @try {

    //

    [[self leftLabel] setText:labelText];

    [[self leftLabel] setFont:labelFont];

    [[self leftLabel] setTextColor:labelColor];

  } @catch (NSException *ex) {

    //

    UIImageView* leftImage = (UIImageView*)[self leftLabel];

    leftImage.p_w_picpath = nil;

    leftImage.frame = CGRectMake(0.0f, 0.0f, 0.0f, 0.0f);

    //

    [leftImage addSubview: [[self createLabelWithText:labelText

                           font:labelFont

                          color:labelColor] autorelease]];

  }

}

// 重新设定右边的文本

- (void) setRightLabelText:(NSString *)labelText font:(UIFont*)labelFont color:(UIColor *)labelColor {

  @try {

    //

    [[self rightLabel] setText:labelText];

    [[self rightLabel] setFont:labelFont];

    [[self rightLabel] setTextColor:labelColor];

  } @catch (NSException *ex) {

    //

    UIImageView* rightImage = (UIImageView*)[self rightLabel];

    rightImage.p_w_picpath = nil;

    rightImage.frame = CGRectMake(0.0f, 0.0f, 0.0f, 0.0f);

    //

    [rightImage addSubview: [[self createLabelWithText:labelText

                           font:labelFont

                           color:labelColor] autorelease]];

  }

}

@end

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