iOS开发中UISwitch按钮的使用方法简介

2020-01-14 17:11:51王冬梅

@implementation HMCustomSwitch

@synthesize on;
@synthesize tintColor, clippingView, leftLabel, rightLabel;

+(HMCustomSwitch *)switchWithLeftText:(NSString *)leftText andRight:(NSString *)rightText
{
 HMCustomSwitch *switchView = [[HMCustomSwitch alloc] initWithFrame:CGRectZero];
 
 switchView.leftLabel.text = leftText;
 switchView.rightLabel.text = rightText;
 
 return [switchView autorelease];
}

-(id)initWithFrame:(CGRect)rect
{
 if ((self=[super initWithFrame:CGRectMake(rect.origin.x,rect.origin.y,95,27)]))
 {
  //  self.clipsToBounds = YES;
  
  [self awakeFromNib];  // do all setup in awakeFromNib so that control can be created manually or in a nib file
 }
 return self;
}

-(void)awakeFromNib
{
 [super awakeFromNib];
 
 self.backgroundColor = [UIColor clearColor];

 [self setThumbImage:[UIImage imageNamed:@"switchThumb.png"] forState:UIControlStateNormal];
 [self setMinimumTrackImage:[UIImage imageNamed:@"switchBlueBg.png"] forState:UIControlStateNormal];
 [self setMaximumTrackImage:[UIImage imageNamed:@"switchOffPlain.png"] forState:UIControlStateNormal];
 
 self.minimumValue = 0;
 self.maximumValue = 1;
 self.continuous = NO;
 
 self.on = NO;
 self.value = 0.0;
 
 self.clippingView = [[UIView alloc] initWithFrame:CGRectMake(4,2,87,23)];
 self.clippingView.clipsToBounds = YES;
 self.clippingView.userInteractionEnabled = NO;
 self.clippingView.backgroundColor = [UIColor clearColor];
 [self addSubview:self.clippingView];
 [self.clippingView release];
 
 NSString *leftLabelText = NSLocalizedString(@"ON","Custom UISwitch ON label. If localized to empty string then I/O will be used");
 if ([leftLabelText length] == 0) 
 {
  leftLabelText = @"l";  // use helvetica lowercase L to be a 1. 
 }
 
 self.leftLabel = [[UILabel alloc] init];
 self.leftLabel.frame = CGRectMake(0, 0, 48, 23);
 self.leftLabel.text = leftLabelText;
 self.leftLabel.textAlignment = NSTextAlignmentCenter;
 self.leftLabel.font = [UIFont boldSystemFontOfSize:17];
 self.leftLabel.textColor = [UIColor whiteColor];