iOS 判断设备是否越狱

@interface UIDevice (Helper) 
- (BOOL)isJailbroken; 
@end


@implementation UIDevice (Helper) 
- (BOOL)isJailbroken { 
BOOL jailbroken = NO; 
NSString *cydiaPath = @"/Applications/Cydia.app"; 
NSString *aptPath = @"/private/var/lib/apt/"; 
if ([[NSFileManager defaultManager] fileExistsAtPath:cydiaPath]) { 
jailbroken = YES; 
} 
if ([[NSFileManager defaultManager] fileExistsAtPath:aptPath]) { 
jailbroken = YES; 
} 
return jailbroken; 
} 
@end