iOS如果获取蓝牙Mac地址

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目录(?)[+]

在做iOS蓝牙开发的时候肯定会遇到这种问题，苹果自带的CoreBluetooth SDK中不能获取到蓝牙的Mac地址，只能得到UUID，但是UUID并不是唯一的，换一个设备再连接UUID就不一样了。而且Android手机是可以获取到Mac地址的，不能很好的兼容Android手机，Android是不可能获取到UUID，为了很好的兼容，只能iOS想办法获取Mac地址了。幸运的是iOS也不是没有办法获取到Mac地址。

主要思路

虽然苹果官方的API没有获取Mac地址的方法，但是当我翻看蓝牙的文档的时候，我发现蓝牙有提供一个设备信息的service［service UUID：0x180A］,里面提供了两个characteristic：获取芯片的Mac地址（0x2A23 ）和获取软件的版本号（0x2A26）。如下图所示： 

实现

根据这个思路：

<code class="language-object-c hljs lua has-numbering" style="display: block; padding: 0px; background-color: transparent; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-top-left-radius: 0px; border-top-right-radius: 0px; border-bottom-right-radius: 0px; border-bottom-left-radius: 0px; word-wrap: normal; background-position: initial initial; background-repeat: initial initial;">[peripheral discoverServices:@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">[[CBUUID UUIDWithString:@"180A"]]</span>];[service discoverCharacteristics:@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">[[CBUUID UUIDWithString:@"2A23"]]</span>];[peripheral readValueForCharacteristic:characteristic]NSString *value = [NSString stringWithFormat:@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"%@"</span>,characteristic.value];NSMutableString *macString = <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">[[NSMutableString alloc] init];[macString appendString:[[value substringWithRange:NSMakeRange(16, 2)] uppercaseString]];[macString appendString:@":"];[macString appendString:[[value substringWithRange:NSMakeRange(14, 2)] uppercaseString]];[macString appendString:@":"];[macString appendString:[[value substringWithRange:NSMakeRange(12, 2)] uppercaseString]];[macString appendString:@":"];[macString appendString:[[value substringWithRange:NSMakeRange(5, 2)] uppercaseString]];[macString appendString:@":"];[macString appendString:[[value substringWithRange:NSMakeRange(3, 2)] uppercaseString]];[macString appendString:@":"];[macString appendString:[[value substringWithRange:NSMakeRange(1, 2)] uppercaseString]];//00:E0:4C:3F:14:DE                            </span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; background-color: rgb(238, 238, 238); top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right;"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li></ul>

这里可一个大家推荐一个非常好用的蓝牙开发的库，跟CoreBluetooth的接口一摸一样，只是数据是用过block返回的，用起来更加的方便。MPBluetoothKit 
Github地址

下面是写的MPBluetoothKit 获取Mac地址的代码

<code class="language-object-c hljs cs has-numbering" style="display: block; padding: 0px; background-color: transparent; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-top-left-radius: 0px; border-top-right-radius: 0px; border-bottom-right-radius: 0px; border-bottom-left-radius: 0px; word-wrap: normal; background-position: initial initial; background-repeat: initial initial;">    CBUUID *macServiceUUID = [CBUUID UUIDWithString:<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">@"180A"</span>];    CBUUID *macCharcteristicUUID = [CBUUID UUIDWithString:<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">@"2A23"</span>];    [mPeripheral discoverServices:@[macServiceUUID] withBlock:^(MPPeripheral *peripheral, NSError *error) {        <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span>(peripheral.services.count){            MPService *service = [peripheral.services objectAtIndex:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>];            [service discoverCharacteristics:@[macCharcteristicUUID] withBlock:^(MPPeripheral *peripheral, MPService *service, NSError *error) {                <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">for</span>(MPCharacteristic *characteristic <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">in</span> service.characteristics){                    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span>([characteristic.UUID isEqual:macCharcteristicUUID]){                        [characteristic readValueWithBlock:^(MPPeripheral *peripheral, MPCharacteristic *characteristic, NSError *error){                            NSString *<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">value</span> = [NSString stringWithFormat:<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">@"%@"</span>,characteristic.<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">value</span>];                            NSMutableString *macString = [[NSMutableString alloc] init];                            [macString appendString:[[<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">value</span> substringWithRange:NSMakeRange(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">16</span>, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>)] uppercaseString]];                            [macString appendString:<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">@":"</span>];                            [macString appendString:[[<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">value</span> substringWithRange:NSMakeRange(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">14</span>, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>)] uppercaseString]];                            [macString appendString:<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">@":"</span>];                            [macString appendString:[[<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">value</span> substringWithRange:NSMakeRange(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">12</span>, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>)] uppercaseString]];                            [macString appendString:<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">@":"</span>];                            [macString appendString:[[<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">value</span> substringWithRange:NSMakeRange(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">5</span>, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>)] uppercaseString]];                            [macString appendString:<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">@":"</span>];                            [macString appendString:[[<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">value</span> substringWithRange:NSMakeRange(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">3</span>, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>)] uppercaseString]];                            [macString appendString:<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">@":"</span>];                            [macString appendString:[[<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">value</span> substringWithRange:NSMakeRange(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>)] uppercaseString]];                            NSLog(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">@"macString:%@"</span>,macString);                        }];                    }                }            }];        }    }];                          </code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; background-color: rgb(238, 238, 238); top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right;"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li><li style="box-sizing: border-box; padding: 0px 5px;">30</li></ul>

是不是一个很方便库啊？当然这是小弟开源的一个库，如果喜欢的话就去Github帮忙star一下哈 ^_^

update 2016.1.7

因为有网友要求写一个例子，所以我写了一个DEMO放在Github上了 
BluetoothMacAddressDemo