////  YXLabel.h////  Created by YouXianMing on 14-8-23.//  Copyright (c) 2014年 YouXianMing. All rights reserved.//#import <UIKit/UIKit.h>@interface YXLabel : UIView@property (nonatomic, strong) NSString *text;       // 文本的文字@property (nonatomic, strong) UIFont   *font;       // 文本的字体@property (nonatomic, assign) CGFloat   startScale; // 最初处于alpha = 0状态时的scale值@property (nonatomic, assign) CGFloat   endScale;   // 最后处于alpha = 0状态时的scale值@property (nonatomic, strong) UIColor  *backedLabelColor; // 不会消失的那个label的颜色@property (nonatomic, strong) UIColor  *colorLabelColor;  // 最终会消失的那个label的颜色- (void)startAnimation;@end

////  YXLabel.m////  Created by YouXianMing on 14-8-23.//  Copyright (c) 2014年 YouXianMing. All rights reserved.//#import "YXLabel.h"@interface YXLabel ()@property (nonatomic, strong) UILabel  *backedLabel;@property (nonatomic, strong) UILabel  *colorLabel;@end@implementation YXLabel- (id)initWithFrame:(CGRect)frame{    self = [super initWithFrame:frame];    if (self)    {        _backedLabel = [[UILabel alloc] initWithFrame:self.bounds];        _colorLabel  = [[UILabel alloc] initWithFrame:self.bounds];                // 初始时的alpha值为0        _backedLabel.alpha = 0;        _colorLabel.alpha  = 0;                // 文本居中        _backedLabel.textAlignment = NSTextAlignmentCenter;        _colorLabel.textAlignment  = NSTextAlignmentCenter;                [self addSubview:_backedLabel];        [self addSubview:_colorLabel];    }    return self;}- (void)startAnimation{    // 判断endScale的值    if (_endScale == 0) {        _endScale = 2.f;    }        // 开始第一次动画    [UIView animateWithDuration:1                          delay:0         usingSpringWithDamping:7          initialSpringVelocity:4                        options:UIViewAnimationOptionCurveEaseInOut                     animations:^{                         // 恢复正常尺寸                         _backedLabel.alpha     = 1.f;                         _backedLabel.transform = CGAffineTransformMake(1, 0, 0, 1, 0, 0);                                                  _colorLabel.alpha      = 1.f;                         _colorLabel.transform  = CGAffineTransformMake(1, 0, 0, 1, 0, 0);;                     }                     completion:^(BOOL finished) {                                                  // 开始第二次动画                         [UIView animateWithDuration:2                                               delay:0.5                              usingSpringWithDamping:7                               initialSpringVelocity:4                                             options:UIViewAnimationOptionCurveEaseInOut                                          animations:^{                                              _colorLabel.alpha     = 0.f;                                              _colorLabel.transform = CGAffineTransformMake(_endScale, 0, 0, _endScale, 0, 0);                                          }                                          completion:^(BOOL finished) {                                                                                        }];                     }];}#pragma mark - 重写setter方法@synthesize text = _text;- (void)setText:(NSString *)text{    _text             = text;    _backedLabel.text = text;    _colorLabel.text  = text;}- (NSString *)text{    return _text;}@synthesize startScale = _startScale;- (void)setStartScale:(CGFloat)startScale{    _startScale = startScale;    _backedLabel.transform = CGAffineTransformMake(startScale, 0, 0, startScale, 0, 0);    _colorLabel.transform  = CGAffineTransformMake(startScale, 0, 0, startScale, 0, 0);}- (CGFloat)startScale{    return _startScale;}@synthesize font = _font;- (void)setFont:(UIFont *)font{    _font = font;    _backedLabel.font = font;    _colorLabel.font  = font;}- (UIFont *)font{    return _font;}@synthesize backedLabelColor = _backedLabelColor;- (void)setBackedLabelColor:(UIColor *)backedLabelColor{    _backedLabelColor = backedLabelColor;    _backedLabel.textColor = backedLabelColor;}@synthesize colorLabelColor = _colorLabelColor;- (void)setColorLabelColor:(UIColor *)colorLabelColor{    _colorLabelColor = colorLabelColor;    _colorLabel.textColor = colorLabelColor;}@end

////  RootViewController.m//  Demo////  Created by YouXianMing on 14-8-22.//  Copyright (c) 2014年 YouXianMing. All rights reserved.//#import "RootViewController.h"#import "YXLabel.h"#import "FontPool.h"@interface RootViewController ()@end@implementation RootViewController- (void)viewDidLoad{    [super viewDidLoad];        self.view.backgroundColor = [UIColor blackColor];        // 注册字体    REGISTER_FONT(bundleFont(@"新蒂小丸子小学版.ttf"), @"新蒂小丸子小学版");        YXLabel *label   = [[YXLabel alloc] initWithFrame:CGRectMake(0, 0, 320, 100)];    label.text       = @"高逼格";    label.startScale = 0.3f;    label.endScale   = 2.f;    label.backedLabelColor = [UIColor whiteColor];    label.colorLabelColor  = [UIColor cyanColor];    label.font       = [UIFont fontWithName:CUSTOM_FONT(@"新蒂小丸子小学版", 0)                                       size:30.f];    label.center      = self.view.center;    [self.view addSubview:label];        [[GCDQueue mainQueue] execute:^{        [label startAnimation];    } afterDelay:NSEC_PER_SEC * 7];}@end