iOS-摇一摇动画效果加音效处理效果

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发布时间：2019-06-16

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技术：AVFoundation+AudioToolbox+runtime

运行环境：iOS

概述

1.摇动手机页面，整体的摇动效果 2.声音的开关控制，可单独做声音控制工具类 3.播放音乐工具类，可单独抽出做其他相关声音类工具使用.

详细

众所周知, 摇一摇功能有搜索人/歌曲/电视，也有一个摇一摇签到, 摇一摇随机选号等功能，下面以微信摇一摇功能来介绍实现原理.

### 一、程序实现

##### 1. 监听摇一摇方法

```
// 摇一摇开始
- (void)motionBegan:(UIEventSubtype)motion withEvent:(nullable UIEvent *)event NS_AVAILABLE_IOS(3_0);
// 摇一摇结束
- (void)motionEnded:(UIEventSubtype)motion withEvent:(nullable UIEvent *)event NS_AVAILABLE_IOS(3_0);
// 摇一摇取消
- (void)motionCancelled:(UIEventSubtype)motion withEvent:(nullable UIEvent *)event NS_AVAILABLE_IOS(3_0);

```

##### 2. 解决摇一摇失效的情况.

PS:使用 Xcode6.x 后创建的项目,仅仅实现第一步监听就可以实现,没有遇到这种问题. 
```

- (BOOL)canBecomeFirstResponder {
    return YES;
}
```

##### 3. 摇一摇阶段需要震动及声音.

摇动开始:
```
/** 开始摇一摇 */
- (void)motionBegan:(UIEventSubtype)motion withEvent:(UIEvent *)event {
    NSLog(@"motionBegan");

if([[[NSUserDefaults standardUserDefaults] objectForKey:MUteSwitchKey] boolValue]){
        [ZLAudioTool playMusic:@"shake.mp3"];
    }
    [self startShakeAnimation];
}
```
##### 4. 摇一摇阶段需要动画效果.

摇一摇动画:
```
#pragma mark - 执行摇一摇动画
- (void)startShakeAnimation {
    
    [self.shakeImageView.layer removeAnimationForKey:@"shake"];
    CABasicAnimation* shake = [CABasicAnimation animationWithKeyPath:@"transform.rotation.z"];
    //设置抖动幅度
    shake.fromValue = [NSNumber numberWithFloat:-0.4];
    shake.toValue = [NSNumber numberWithFloat:+0.4];
    shake.duration = 0.17;
    shake.delegate = self;
    shake.autoreverses = YES;
    //是否重复
    shake.repeatCount = 3;
    [self.shakeImageView.layer addAnimation:shake forKey:@"shake"];
}
```
CAAnimationDelegated动画执行结束回调:

```
#pragma mark - CAAnimationDelegated动画执行结束回调
- (void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag {
    
    if([[[NSUserDefaults standardUserDefaults] objectForKey:MUteSwitchKey] boolValue]){
        [ZLAudioTool playMusic:@"result.mp3"];
    }
    // TODO:
    NSInteger i = arc4random() % 100;
    
    UIAlertController *alertController = [UIAlertController alertControllerWithTitle:[NSString stringWithFormat:@"%ld号签", (long)i] message:[NSString stringWithFormat:@"%ld号内容", (long)i] preferredStyle:UIAlertControllerStyleAlert];
    alertController.titleColor = UIColorFromRGB(0x333333);
    alertController.messageColor = UIColorFromRGB(0x555555);
    [alertController addAction:[UIAlertAction actionWithTitle:@"知道了" style:UIAlertActionStyleDefault handler:nil]];
    [self presentViewController:alertController animated:YES completion:nil];
}
```
##### 5. 播放音乐工具类，可单独抽出做其他相关声音类工具使用.
```

/**
 *  播放音乐
 *
 *  @param filename 音乐的文件名
 */
+ (void)playMusic:(NSString *)filename {
    @try {
        NSURL *url = [[NSBundle mainBundle] URLForResource:filename withExtension:nil];
        SystemSoundID soundID = 0;
        AudioServicesCreateSystemSoundID((__bridge CFURLRef)(url), &soundID);
        AudioServicesPlaySystemSound(soundID);
    } @catch (NSException *exception) {
        NSLog(@"处理异常%@", exception);
    } @finally {
        NSLog(@"异常完成");
    }
    
}

```
##### 6. 声音的开关控制，可单独做声音控制工具类使用
```
- (instancetype)init{
    if (self = [super init]){
        
        NSURL* url = [[NSBundle bundleWithPath:[[NSBundle mainBundle] pathForResource:@"MuteSwitchListener" ofType:@"bundle"]] URLForResource:@"silence" withExtension:@"mp3"];
        if (AudioServicesCreateSystemSoundID((__bridge CFURLRef)url, &_soundId) == kAudioServicesNoError){
            UInt32 yes = 1;
            AudioServicesAddSystemSoundCompletion(self.soundId,
                                                  CFRunLoopGetMain(),
                                                  kCFRunLoopCommonModes,
                                                  MuteSwitchListenerNotificationCompletionProc,
                                                  (__bridge void *)(self));
            AudioServicesSetProperty(kAudioServicesPropertyIsUISound,
                                     sizeof(_soundId),
                                     &_soundId,
                                     sizeof(yes),
                                     &yes);
            [self performSelector:@selector(loopCheck) withObject:nil afterDelay:1];
        } else {
            self.soundId = -1;
        }
        
        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(didEnterBackground) name:UIApplicationDidEnterBackgroundNotification object:nil];
        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(willReturnToForeground) name:UIApplicationWillEnterForegroundNotification object:nil];
    }
    return self;
}

+ (instancetype)shareInstance{
    static MuteSwitchListener* sShared = nil;
    if (!sShared)
        sShared = [MuteSwitchListener new];
    return sShared;
}

- (void)setMuteListenerBlock:(MuteSwitchListenerBlock)muteListenerBlock{
    _muteListenerBlock = muteListenerBlock;
}

```

### 二、运行效果
运行效果：

![](/contentImages/image/20190615/FLQtzsmoVMqDXxSa2Ln.gif)

### 三、项目结构图

![](/contentImages/image/20190615/1DUbdIqPdOvnIcXZIvd.png)

### 四、其他补充
当然也有使用摇一摇做其他功能的,可以在当结束摇动时，就发送一个网络请求作相关操作即可。

界面性问题可以根据自己项目需求调整即可, 具体可参考代码, 项目能够直接运行!

本实例支付的费用只是购买源码的费用，如有疑问欢迎在文末留言交流，如需作者在线代码指导、定制等，在作者开启付费服务后，可以点击“购买服务”进行实时联系，请知悉，谢谢

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iOS-摇一摇动画效果加音效处理效果

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