iOS通过包名打开其他app

Class lsawsc = objc_getClass("LSApplicationWorkspace");     NSObject* workspace = [lsawsc performSelector:NSSelectorFromString(@"defaultWorkspace")];     BOOL opend = NO;     // iOS6 没有defaultWorkspace     if ([workspace respondsToSelector:NSSelectorFromString(@"openApplicationWithBundleID:")])     {       [workspace performSelector:NSSelectorFromString(@"openApplicationWithBundleID:") withObject:BundleID];     }