近期学了一点Python,然后正好有一个手机同步工具方面的预研工作要完成。
要实现PC与手机的通信,首先要找到他们的通信协议,还好的是Android有完善的协议:ADB
ADB的代码是开源的,而且支持Windows平台,有现成的DLL可以调用:AdbWinApi.dll,AdbWinUsbApi.dll
好了,可以用VC搞定,但我想用Python试一下,于是开始了苦逼的查资料+实验的过程。
实验过程就不多说了,由于上面的两个DLL都是用C实现的,提供的头文件也是C语言的,所以有了下面这个python测试程序(Python2.7):
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 | import ctypes #自定义的GUID结构,有兴趣的可以自己研究用uuid模块 class GUID(ctypes.Structure): _fields_ = [( "Data1" , ctypes.c_ulong), ( "Data2" , ctypes.c_ushort), ( "Data3" , ctypes.c_ushort), ( "Data4" , ctypes.c_ubyte * 8 )] #自己定义的一个结构体,便于使用DLL接口 class AdbInterfaceInfo(ctypes.Structure): _fields_ = [( "class_id" , GUID), ( "flags" , ctypes.c_ulong), ( "device_name" , ctypes.c_wchar * 800 )] def strGUID(GUID): string = '' string = string + '%x' % buff.class_id.Data1 + '-%x' % buff.class_id.Data2 + '-%x' % buff.class_id.Data3 string = string + '-%x' % buff.class_id.Data4[ 0 ] string = string + '%x' % buff.class_id.Data4[ 1 ] string = string + '%x' % buff.class_id.Data4[ 2 ] string = string + '%x' % buff.class_id.Data4[ 3 ] string = string + '%x' % buff.class_id.Data4[ 4 ] string = string + '%x' % buff.class_id.Data4[ 5 ] string = string + '%x' % buff.class_id.Data4[ 6 ] string = string + '%x' % buff.class_id.Data4[ 7 ] return string dll = ctypes.cdll.LoadLibrary( 'AdbWinApi.dll' ) usb_class_id = GUID( 0xF72FE0D4 , 0xCBCB , 0x407d , ( 0x88 , 0x14 , 0x9e , 0xd6 , 0x73 , 0xd0 , 0xdd , 0x6b )) enum_handle = dll.AdbEnumInterfaces(usb_class_id, ctypes.c_bool( 'true' ), ctypes.c_bool( 'true' ), ctypes.c_bool( 'true' )) while ( 1 ): buff = AdbInterfaceInfo() size = ctypes.c_ulong(ctypes.sizeof(buff)) status = dll.AdbNextInterface(enum_handle, ctypes.byref(buff), ctypes.byref(size)) if status = = 1 : #print "GUID = " + strGUID(buff.class_id) #print "status = " + str(status) #print "Name = " + str(buff.device_name) hAdbApi = dll.AdbCreateInterfaceByName(buff.device_name); if hAdbApi = = 0 : print 'AdbCreateInterfaceByName Fail' else : serial = ' ' * 128 pserial = ctypes.c_char_p() pserial.value = serial serial_len = ctypes.c_ulong( len (serial)) ret = dll.AdbGetSerialNumber(hAdbApi, pserial, ctypes.byref(serial_len), ctypes.c_bool( 'false' )); if ret = = 1 : print 'Device Name: ' + '%s' % serial else : print 'Get Device Name Fail' else : print 'Finished' break import ctypes #自定义的GUID结构,有兴趣的可以自己研究用uuid模块 class GUID(ctypes.Structure): _fields_ = [( "Data1" , ctypes.c_ulong), ( "Data2" , ctypes.c_ushort), ( "Data3" , ctypes.c_ushort), ( "Data4" , ctypes.c_ubyte * 8 )] #自己定义的一个结构体,便于使用DLL接口 class AdbInterfaceInfo(ctypes.Structure): _fields_ = [( "class_id" , GUID), ( "flags" , ctypes.c_ulong), ( "device_name" , ctypes.c_wchar * 800 )] def strGUID(GUID): string = '' string = string + '%x' % buff.class_id.Data1 + '-%x' % buff.class_id.Data2 + '-%x' % buff.class_id.Data3 string = string + '-%x' % buff.class_id.Data4[ 0 ] string = string + '%x' % buff.class_id.Data4[ 1 ] string = string + '%x' % buff.class_id.Data4[ 2 ] string = string + '%x' % buff.class_id.Data4[ 3 ] string = string + '%x' % buff.class_id.Data4[ 4 ] string = string + '%x' % buff.class_id.Data4[ 5 ] string = string + '%x' % buff.class_id.Data4[ 6 ] string = string + '%x' % buff.class_id.Data4[ 7 ] return string dll = ctypes.cdll.LoadLibrary( 'AdbWinApi.dll' ) usb_class_id = GUID( 0xF72FE0D4 , 0xCBCB , 0x407d , ( 0x88 , 0x14 , 0x9e , 0xd6 , 0x73 , 0xd0 , 0xdd , 0x6b )) enum_handle = dll.AdbEnumInterfaces(usb_class_id, ctypes.c_bool( 'true' ), ctypes.c_bool( 'true' ), ctypes.c_bool( 'true' )) while ( 1 ): buff = AdbInterfaceInfo() size = ctypes.c_ulong(ctypes.sizeof(buff)) status = dll.AdbNextInterface(enum_handle, ctypes.byref(buff), ctypes.byref(size)) if status = = 1 : #print "GUID = " + strGUID(buff.class_id) #print "status = " + str(status) #print "Name = " + str(buff.device_name) hAdbApi = dll.AdbCreateInterfaceByName(buff.device_name); if hAdbApi = = 0 : print 'AdbCreateInterfaceByName Fail' else : serial = ' ' * 128 pserial = ctypes.c_char_p() pserial.value = serial serial_len = ctypes.c_ulong( len (serial)) ret = dll.AdbGetSerialNumber(hAdbApi, pserial, ctypes.byref(serial_len), ctypes.c_bool( 'false' )); if ret = = 1 : print 'Device Name: ' + '%s' % serial else : print 'Get Device Name Fail' else : print 'Finished' break |
上面这个简单的Python代码,可以通过AdbWinApi.dll和AdbWinUsbApi.dll这两个DLL来找到你PC上正连接着的Android设备。
只调用了3个DLL接口,但目的已经达到,可以得出下面的结论:
使用Python调用DLL的方式来实现ADB工具是可行的,当然麻烦是不会少的了。
写在最后,Python调用C写的DLL还是比较麻烦的,特别是参数传递,尤其是指针的处理,这方面还得依靠ctypes模块。。。
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