闲来无事，分享一个妹子使用利器，shakeTool感觉污污的，记得在大学时候用安卓手机的时候见过类似的app，简单写了一个demo，喜欢的朋友欢迎分享转发。 我们先来看一下效果图

功能很简单，分为三种：

• 1.体验单次：故名思议，就是体验一下震动的赶脚

• 2.持续：不停的震动，哈哈

• 3.关闭：停止振动棒工作

下边的滑块是自己写的slider，估计是系统的slider太丑，而且滑动不灵敏。 demo已经上传到github，可以下载安装，记得真机运行 下载demo

接下来简单说一下实现思路： 1.震动来源，导入AudioToolbox库

#import <AudioToolbox/AudioToolbox.h>复制代码

这里我们使用的类均来自于AudioServices的方法

2.如果你喜欢特变的震动背景乐，可以通过下边实现

NSString *path = [[NSBundle mainBundle] pathForResource:@"1669" ofType:@"wav"];AudioServicesCreateSystemSoundID((__bridge CFURLRef)[NSURL fileURLWithPath:path], &sound);AudioServicesAddSystemSoundCompletion(sound, NULL, NULL, soundCompleteCallback, NULL);AudioServicesPlaySystemSound(sound);复制代码

3.实现震动效果

AudioServicesPlaySystemSound(kSystemSoundID_Vibrate);复制代码

这里kSystemSoundID_Vibrate即service中的震动效果

4.因为要实现持续震动，所以需要创建全局的NSTimer来控制开始，暂停。

_vibrationTimer = [NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(playkSystemSound) userInfo:nil repeats:YES];复制代码

5.实例的时候需要暂停定时器的运转

[_vibrationTimer setFireDate:[NSDate distantFuture]];复制代码

在恰当的实际可以重新开启震动效果

[_vibrationTimer setFireDate:[NSDate distantPast]];复制代码

6.滑动滑块的时候我们要控制震动的节奏 添加一个UIImageView和一个Button，按钮添加滑动手势

UIPanGestureRecognizer * pan = [[UIPanGestureRecognizer alloc]initWithTarget:self action:@selector(progreeChanged:)];[self.progressBtn addGestureRecognizer:pan];复制代码

7.实现滑动过程中调整滑块位置，并调整震动节奏

-(void)progreeChanged:(UIPanGestureRecognizer *)recognizer{// Figure out where the user is trying to drag the view.CGPoint translation = [recognizer translationInView:self.view];CGPoint newCenter = CGPointMake(recognizer.view.center.x+ translation.x,recognizer.view.center.y);// 限制屏幕范围：newCenter.y = MAX(recognizer.view.frame.size.height/2, newCenter.y);newCenter.y = MIN(self.view.frame.size.height - recognizer.view.frame.size.height/2, newCenter.y);newCenter.x = MAX(recognizer.view.frame.size.width/2, newCenter.x);newCenter.x = MIN(self.view.frame.size.width - recognizer.view.frame.size.width/2,newCenter.x);if (newCenter.x> self.backImage.frame.origin.x + recognizer.view.frame.size.width/2 && newCenter.x<self.backImage.frame.origin.x -recognizer.view.frame.size.width/2 + self.backImage.frame.size.width) {recognizer.view.center = newCenter;[recognizer setTranslation:CGPointZero inView:self.view];float value = (newCenter.x - self.backImage.frame.origin.x-recognizer.view.frame.size.width/2)/ (self.backImage.frame.size.width-recognizer.view.frame.size.width) ;NSLog(@"%.2f",value);[_vibrationTimer invalidate];AudioServicesRemoveSystemSoundCompletion(sound);AudioServicesDisposeSystemSoundID(sound);value = value< 0.1 ? 2 : value;_vibrationTimer = [NSTimer scheduledTimerWithTimeInterval:1/(value *5) target:self selector:@selector(playkSystemSound) userInfo:nil repeats:YES];}}复制代码

8.单次体验 简单的加了一个延时操作，用于销毁定时器

dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(5 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{[_vibrationTimer setFireDate:[NSDate distantFuture]];});复制代码

大功告成

demo下载

转载于:https://juejin.im/post/5a45f8b7f265da430c122409