在搜索联系人应用程序之后，我已经弄清楚它是如何工作的。

After serval hours' digging in the Contact App, I have figured out how it works.

ABNewPersonViewControlle调用ToneLibrary框架中的一些类来执行此操作。

ABNewPersonViewControlle invoke some class in ToneLibrary framework to do this.

调用堆栈如下所示：

0   CoreFoundation                  0x3359a1d4 CFGetTypeID + 0
1   CoreFoundation                  0x33596396 __CFPropertyListIsValidAux + 46
2   CoreFoundation                  0x33517090 CFPropertyListCreateData + 124
3   AudioToolbox                    0x38ac255a AudioServicesPlaySystemSoundWithVibration + 158
5   ToneLibrary                     0x35a7811a -[TLVibrationRecorderView vibrationComponentDidStartForVibrationRecorderTouchSurface:] + 38
6   ToneLibrary                     0x35a772b2 -[TLVibrationRecorderTouchSurface touchesBegan:withEvent:] + 342
7   UIKit                           0x3610f526 -[UIWindow _sendTouchesForEvent:] + 314
8   UIKit                           0x360fc804 -[UIApplication sendEvent:] + 376

在网上搜索AudioServicesPlaySystemSoundWithVibration之后，我一无所获。

After search "AudioServicesPlaySystemSoundWithVibration" on the web , I found nothing.

所以我决定亲自调查一下。它是AudioToolbox框架中的私有函数。

So I decide to look into it myself. It's a private function in AudioToolbox framework.

该函数的声明类似于

void AudioServicesPlaySystemSoundWithVibration(SystemSoundID inSystemSoundID,id arg,NSDictionary* vibratePattern)

inSystemSoundIDis SystemSoundID。就像AudioServicesPlaySystemSound一样，传递kSystemSoundID_Vibrate。

"inSystemSoundID" is SystemSoundID .just like "AudioServicesPlaySystemSound", pass "kSystemSoundID_Vibrate".

arg并不重要，传递给它，一切都会正常工作。

"arg" is not important, pass nil to it , everything will still work fine.

vibratePattern是NSDictionary的指针，Contact App传入
{
Intensity = 1;
OffDuration = 1;
OnDuration = 10;
}用于记录用户输入。

"vibratePattern" is a pointer of "NSDictionary", the Contact App pass into { Intensity = 1; OffDuration = 1; OnDuration = 10; } for recording user input.

但只有调用此函数才能使振动永不停止。所以我必须找到一些函数来阻止它。

But only call this function will make a vibration never stop. So I have to found some function to stop it.

答案是AudioServicesStopSystemSound。它也是AudioToolbox框架中的私有函数。

The answer is "AudioServicesStopSystemSound". It's also a private function in AudioToolbox framework.

函数的声明就像

void AudioServicesStopSystemSound(SystemSoundID inSystemSoundID)

我猜联系人应用程序在touchesBegan方法中使用AudioServicesPlaySystemSoundWithVibration和touchSernd方法中的AudioServicesStopSystemSound达到此效果。

I guess the Contact App use AudioServicesPlaySystemSoundWithVibration in touchesBegan method, and AudioServicesStopSystemSound in touchEnd method to reach this effect.

TLVibrationController将管理一个振动模式对象来记录您输入的过程。

TLVibrationController will manager a vibrate pattern object to record the process you input.

最后生成一个字典，传入AudioServicesPlaySystemSoundWithVibration以重放整个过程，如下所示：

At last it generate a dictionary to pass into AudioServicesPlaySystemSoundWithVibration to replay the whole process like below:

NSMutableDictionary* dict = [NSMutableDictionary dictionary];
NSMutableArray* arr = [NSMutableArray array ];

[arr addObject:[NSNumber numberWithBool:YES]]; //vibrate for 2000ms
[arr addObject:[NSNumber numberWithInt:2000]];

[arr addObject:[NSNumber numberWithBool:NO]];  //stop for 1000ms
[arr addObject:[NSNumber numberWithInt:1000]];

[arr addObject:[NSNumber numberWithBool:YES]];  //vibrate for 1000ms
[arr addObject:[NSNumber numberWithInt:1000]];

[arr addObject:[NSNumber numberWithBool:NO]];    //stop for 500ms
[arr addObject:[NSNumber numberWithInt:500]];

[dict setObject:arr forKey:@"VibePattern"];
[dict setObject:[NSNumber numberWithInt:1] forKey:@"Intensity"];


AudioServicesPlaySystemSoundWithVibration(4095,nil,dict);

因此，如果您想在iOS中进行自定义振动。使用AudioServicesPlaySystemSoundWithVibration和AudioServicesStopSystemSound。

So if you want a custom vibrations in iOS. Use AudioServicesPlaySystemSoundWithVibration and AudioServicesStopSystemSound.