OC(二):加载动画

结果示例图

.h

//
//  gifView.h
//  GifPicture
//
//  Created by HMC on 16/8/23.
//  Copyright © 2016年 SKing. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface gifView : UIView
//外圈
@property (weak, nonatomic) IBOutlet UIImageView *cycle;
// logo 图标
@property (weak, nonatomic) IBOutlet UIImageView *logo;
//显示的message
@property (weak, nonatomic) IBOutlet UILabel *messageLabel;

+ (instancetype)initInstance;

/**
 *  动画
 *
 *  @param message          加载的文字
 *  @param isCycleAnimation 圆是否有动画
 *  @param isLogoAnimation  logo 是否有动画
 */
-(void)startAnimationWithMessage:(NSString *) message isCycleAnimation:(BOOL) isCycleAnimation isLogoAnimation:(BOOL)isLogoAnimation;

@end

.m

//
//  gifView.m
//  GifPicture
//
//  Created by HMC on 16/8/23.
//  Copyright © 2016年 SKing. All rights reserved.
//

#import "gifView.h"

@implementation gifView



+ (instancetype)initInstance {
    
    
    return [[[NSBundle mainBundle] loadNibNamed:@"gifView" owner:nil options:nil] lastObject];
}

-(void)startAnimationWithMessage:(NSString *) message isCycleAnimation:(BOOL) isCycleAnimation isLogoAnimation:(BOOL)isLogoAnimation  {
    if(message != nil ){
        
        self.messageLabel.text = message;
        
    }
    
    if(isCycleAnimation){
        CABasicAnimation* rotationAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation.z"];
        rotationAnimation.toValue = [NSNumber numberWithFloat: M_PI * 2.0 ];
        rotationAnimation.duration = 1.5;
        rotationAnimation.cumulative = YES;
        rotationAnimation.repeatCount = MAXFLOAT;
//      切换后台再回来动画不停止
        rotationAnimation.removedOnCompletion = NO;
        [self.cycle.layer addAnimation:rotationAnimation forKey:@"rotationAnimation"];
    }
    
    if(isLogoAnimation){
        
        CABasicAnimation * transformAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation.y"];
        transformAnimation.removedOnCompletion = NO;
        transformAnimation.duration = 3.0;
        transformAnimation.toValue = @(0);
        transformAnimation.fromValue = @(M_PI);
        transformAnimation.repeatCount = MAXFLOAT;
        [self.logo.layer addAnimation:transformAnimation forKey:@"transformAnimation"];
        

        CABasicAnimation * transformAnimation1 = [CABasicAnimation animationWithKeyPath:@"transform.rotation.y"];
        transformAnimation1.removedOnCompletion = NO;
        transformAnimation1.duration = 3.0;
        transformAnimation1.fromValue = @(-M_PI);
        transformAnimation1.toValue = @(0);
        transformAnimation1.repeatCount = MAXFLOAT;
        [self.logo.layer addAnimation:transformAnimation1 forKey:@"transformAnimation1"];

        
    }
}



@end

调用

//
//  ViewController.m
//  GifPicture
//
//  Created by HMC on 16/8/23.
//  Copyright © 2016年 SKing. All rights reserved.
//

#import "ViewController.h"
#import "gifView.h"

@interface ViewController ()

@end
@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    gifView * animateView = [gifView initInstance];
    animateView.center = self.view.center;
    [animateView startAnimationWithMessage:@"跟我一起转圈圈,哈哈" isCycleAnimation:YES isLogoAnimation:YES];
    [self.view addSubview:animateView];
}


@end

代码地址: 点这里