在iphone上使用动态库的多为dylib文件,这些文件使用标准的dlopen方式来使用是可以的。那相同的在使用framework文件也可以当做动态库的方式来动态加载,这样就可以比较自由的使用apple私有的framework了。
dlopen是打开库文件
dlsym是获取函数地址
dlclose是关闭。
当然,要使用这种方式也是有明显缺陷的,那就是你要知道函数名和参数,否则无法继续。
私有库的头文件可以使用class dump的方式导出来,这个详细的就需要google了。
下面是两个使用的例子
1: 这是使用coreTelephony.framework获取imsi
#define PRIVATE_PATH "/System/Library/PrivateFrameworks/CoreTelephony.framework/CoreTelephony"
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
[super viewDidLoad];
#if !TARGET_IPHONE_SIMULATOR
void *kit = dlopen(PRIVATE_PATH,RTLD_LAZY);
NSString *imsi = nil;
int (*CTSIMSupportCopyMobileSubscriberIdentity)() = dlsym(kit, "CTSIMSupportCopyMobileSubscriberIdentity");
imsi = (NSString*)CTSIMSupportCopyMobileSubscriberIdentity(nil);
dlclose(kit);
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"IMSI"
message:imsi
delegate:self
cancelButtonTitle:@"OK"
otherButtonTitles:nil];
[alert show];
[alert release];
#endif
}
2:这是使用SpringBoardServices.framework来设置飞行模式开关
#ifdef SUPPORTS_UNDOCUMENTED_API
#define SBSERVPATH "/System/Library/PrivateFrameworks/SpringBoardServices.framework/SpringBoardServices"
#define UIKITPATH "/System/Library/Framework/UIKit.framework/UIKit"
// Don‘t use this code in real life, boys and girls. It is not App Store friendly.
// It is, however, really nice for testing callbacks
+ (void) setAirplaneMode: (BOOL)status;
{
mach_port_t *thePort;
void *uikit = dlopen(UIKITPATH, RTLD_LAZY);
int (*SBSSpringBoardServerPort)() = dlsym(uikit, "SBSSpringBoardServerPort");
thePort = (mach_port_t *)SBSSpringBoardServerPort();
dlclose(uikit);
// Link to SBSetAirplaneModeEnabled
void *sbserv = dlopen(SBSERVPATH, RTLD_LAZY);
int (*setAPMode)(mach_port_t* port, BOOL status) = dlsym(sbserv, "SBSetAirplaneModeEnabled");
setAPMode(thePort, status);
dlclose(sbserv);
}
#endif
本文介绍iOS SrpintBoard框架的部分私有API,具体包括:
- 获取ios上当前正在运行的所有App的bundle id(不管当前程序是在前台还是后台都可以)
- 获取ios上当前前台运行的App的bundle id(不管当前程序是在前台还是后台都可以)
- 根据ios app的bundle id得到其App名称、图标(不管当前程序是在前台还是后台都可以)
- 直接通过App 的bundle id来运行该App,无需使用url scheme(仅限当前程序在前台时,假如程序在后台能随便运行其他App,那就无敌了@[email protected])
(1)初始化
void * uikit = dlopen("/System/Library/Framework/UIKit.framework/UIKit", RTLD_LAZY);
int (*SBSSpringBoardServerPort)() =
dlsym(uikit, "SBSSpringBoardServerPort");
p = (mach_port_t *)SBSSpringBoardServerPort();
dlclose(uikit);
sbserv = dlopen(SBSERVPATH, RTLD_LAZY);
(2)获取iphone上所有正在运行的app的bundle id列表
NSArray* (*SBSCopyApplicationDisplayIdentifiers)(mach_port_t* port, BOOL runningApps,BOOL debuggablet) =
dlsym(sbserv, "SBSCopyApplicationDisplayIdentifiers");
NSArray *currentRunningAppBundleIdArray= SBSCopyApplicationDisplayIdentifiers(p,NO,YES);
(3)得到iphone 前台运行的app的bundle id
void* (*SBFrontmostApplicationDisplayIdentifier)(mach_port_t* port,char * result) = dlsym(sbserv, "SBFrontmostApplicationDisplayIdentifier");
char topapp[256];
SBFrontmostApplicationDisplayIdentifier(p,topapp);
currentTopAppBundleId=[NSStringstringWithFormat:@"%s",topapp];
(4)根据iphone app的bundle id得到其app名称
NSString * (*SBSCopyLocalizedApplicationNameForDisplayIdentifier)(NSString* ) = dlsym(sbserv, "SBSCopyLocalizedApplicationNameForDisplayIdentifier");
NSString *strAppName = SBSCopyLocalizedApplicationNameForDisplayIdentifier(strBundleId);
(5)根据iphone app 的bundle id得到其图标
NSData* (*SBSCopyIconImagePNGDataForDisplayIdentifier)(NSString * bundleid) =
dlsym(sbserv, "SBSCopyIconImagePNGDataForDisplayIdentifier");
UIImage *icon = nil;
NSData *iconData = SBSCopyIconImagePNGDataForDisplayIdentifier(bundleid);
if (iconData != nil) {
icon = [UIImage imageWithData:iconData];
}
return icon;
(6)直接通过app 的bundle id来运行该app
在ios中,一个app调起另一个app的方式通常是用url scheme,但是用这个 私有app,可以在不需要url scheme的情况下运行任何app
-(void)openAppByBundleId:(NSString*)bundleId
{
void* sbServices = dlopen("/System/Library/PrivateFrameworks/SpringBoardServices.framework/SpringBoardServices", RTLD_LAZY);
int (*SBSLaunchApplicationWithIdentifier)(CFStringRef identifier, Boolean suspended) = dlsym(sbServices, "SBSLaunchApplicationWithIdentifier");
const char *strBundleId = [bundleId cStringUsingEncoding:NSUTF8StringEncoding];
int result = SBSLaunchApplicationWithIdentifier((__bridge CFStringRef)bundleId, NO);
dlclose(sbServices);
}