核心动画的使用 - 启动动画

时间：2019-02-18 23:12:30 阅读：202 评论：0 收藏：0 [点我收藏+]

标签：效果 import err png 窗口 info nis lsp from

1、启动动画

1.1 CHWelcomeView.h

@interface CHWelcomeView : UIView

/// 创建欢迎视图
+ (instancetype)weicomeView;

@end

1.2 CHWelcomeView.m

@interface CHWelcomeView ()

@property (weak, nonatomic) IBOutlet UIImageView *backView;

@property (weak, nonatomic) IBOutlet UIImageView *sloganView;

@property (weak, nonatomic) IBOutlet UIImageView *iconView;

@property (weak, nonatomic) IBOutlet UILabel *textView;

@end

@implementation CHWelcomeView

/// 创建欢迎视图
+ (instancetype)weicomeView{
    return [[NSBundle mainBundle] loadNibNamed:NSStringFromClass(self) owner:nil options:nil].firstObject;
}

/// 初始化
- (void)awakeFromNib {
    [super awakeFromNib];

    self.backView.image = [UIImage imageNamed:@"ad_background"];

    self.sloganView.image = [UIImage imageNamed:@"compose_slogan"];
    self.iconView.image = [UIImage imageNamed:@"QianChia0123"];

    self.textView.text = @"欢迎回来";
}

/// 已经添加到父视图上
- (void)didMoveToSuperview {

    [super didMoveToSuperview];

    // 设置头像圆角
    self.iconView.layer.cornerRadius = 50;
    self.iconView.layer.masksToBounds = YES;

    // 头像下移
    self.iconView.transform = CGAffineTransformMakeTranslation(0, 50);

    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1.0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{

        [UIView animateWithDuration:1.0 animations:^{

            // 文字图片慢慢消失
            self.sloganView.alpha = 0;

        } completion:^(BOOL finished) {

            // 显示头像
            self.iconView.hidden = NO;

            [UIView animateWithDuration:1.0 delay:0 usingSpringWithDamping:0.3
            initialSpringVelocity:0
            options:UIViewAnimationOptionCurveLinear
            animations:^{
                // 头像往上移动的动画，弹簧效果
                self.iconView.transform = CGAffineTransformIdentity;

            } completion:^(BOOL finished) {

                self.textView.alpha = 0;
                self.textView.hidden = NO;

                // 文字慢慢显示

                [UIView animateWithDuration:0.5 animations:^{

                    // 欢迎回来 的文字慢慢显示
                    self.textView.alpha = 1;

                } completion:^(BOOL finished) {

                    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.5 * NSEC_PER_SEC)),
                    dispatch_get_main_queue(), ^{

                        // 移除
                        [self removeFromSuperview];
                    });
                }];
            }];
        }];
    });
}

@end

1.3 AppDelegate.m

#import "CHWelcomeView.h"

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

    // 创建窗口
    self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
    UIStoryboard *stroyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
    UIViewController *vc = [stroyboard instantiateInitialViewController];
    self.window.rootViewController = vc;
    [self.window makeKeyAndVisible];

    // 显示欢迎界面
    CHWelcomeView *welcomeV = [CHWelcomeView weicomeView];
    welcomeV.frame = self.window.bounds;                // 注意：一定要给界面设置 Frame
    [self.window addSubview:welcomeV];

    return YES;
}