我正在为Mac制作应用程序,我需要一个能够检测到iPhone插入的API。谢谢。
编辑:为了澄清,具体来说,我需要一个能够检测iPhone何时插入Mac上的USB端口的API。
答案 0 :(得分:6)
我没有完整的答案,但是实现你想要的程序是USB Prober,随Xcode提供,位于/Developer/Applications/Utilities/USB Prober.app
。该程序是开源的,浏览器可查看的存储库为here,整个项目包含在this download中。实际上我发现旧版本更有用,可用here,尤其是BusProbeClass。
他们都依赖于IOKit,Apple的文档似乎在数量和质量上都非常缺乏。
这是一个沉重的阅读,但是如果你查看+ USBProbe
,那么你会看到它获得当前USB设备的列表,在变量IOUSBDeviceInterface
中为每个设备获取deviceIntf
,然后将它们推送到对程序其余部分有用的地方。如果您在同一源文件中查看+ outputDevice: locationID:deviceNumber:
更低版本,您会看到GetDescriptor
似乎可以在IOUSBDeviceDescriptor
上使用,以获取包含供应商和产品ID在内的属性,组合其中USB实施者论坛保证其独一无二。
使用供应商和产品ID,您可以搜索任何特定的USB设备。从我的Mac系统信息我可以告诉你,iPhone 4的产品ID为0x1297,Apple的供应商ID为0x05ac。
额外:从解剖代码开始,如果你删除了一大堆检查,事情正在成功并将其全部压缩到示范性的东西,那么以下至少是对现在是否插入iPhone 4的测试(你'我需要链接到Foundation和IOKit框架):
#include <stdio.h>
#import <Foundation/Foundation.h>
#import <IOKit/usb/IOUSBLib.h>
#import <IOKit/IOCFPlugIn.h>
#import <mach/mach_port.h>
int main (int argc, const char * argv[])
{
// get the port through which to talk to the kernel
mach_port_t masterDevicePort;
IOMasterPort(MACH_PORT_NULL, &masterDevicePort);
// create a dictionary that describes a search
// for services provided by USB
CFDictionaryRef matchingDictionary = IOServiceMatching(kIOUSBDeviceClassName);
// get an iterator for all devices that match
// the dictionary
io_iterator_t deviceIterator;
IOServiceGetMatchingServices(
masterDevicePort,
matchingDictionary,
&deviceIterator);
// iterate through the iterator...
io_service_t ioDevice;
while((ioDevice = IOIteratorNext(deviceIterator)))
{
IOUSBDeviceInterface **deviceInterface = NULL;
IOCFPlugInInterface **ioPlugin = NULL;
SInt32 score;
// get a pointer to the device, stored to ioPlugin
IOCreatePlugInInterfaceForService(
ioDevice,
kIOUSBDeviceUserClientTypeID,
kIOCFPlugInInterfaceID,
&ioPlugin,
&score);
// ask the device for its interface
(*ioPlugin)->QueryInterface(
ioPlugin,
CFUUIDGetUUIDBytes(kIOUSBDeviceInterfaceID),
(void *)&deviceInterface);
// make and issue a request to get the device descriptor
IOUSBDeviceDescriptor deviceDescriptor;
IOUSBDevRequest request;
request.bmRequestType = USBmakebmRequestType(kUSBIn, kUSBStandard, kUSBDevice);
request.bRequest = kUSBRqGetDescriptor;
request.wValue = kUSBDeviceDesc << 8;
request.wIndex = 0;
request.wLength = sizeof(deviceDescriptor);
request.pData = &deviceDescriptor;
(*deviceInterface)->DeviceRequest(deviceInterface, &request);
// now we have the device descriptor, do a little cleaning up -
// release the interface and the device
(*deviceInterface)->Release(deviceInterface);
IOObjectRelease(ioDevice);
// ensure that the values returned are in the appropriate
// byte order for this platform
CFSwapInt16LittleToHost(deviceDescriptor.idVendor);
CFSwapInt16LittleToHost(deviceDescriptor.idProduct);
// check whether we have an iPhone 4 attached
if(deviceDescriptor.idVendor == 0x05ac && deviceDescriptor.idProduct == 0x1297)
printf("iPhone 4 is connected!");
}
// clean up by releasing the device iterator
// and returning the communications port
IOObjectRelease(deviceIterator);
mach_port_deallocate(mach_task_self(), masterDevicePort);
return 0;
}
我还没有想出如何观察插件设备的变化。