如何在我的XCode項目中調用應用程序？

Question

我想知道如何在XCode for iPhone OS中使用Objective-C語言編寫程序，我想從另一個應用程序（它是一個調用應用程序，其功能只是調用hello來調用應用程序（例如：hello world）世界應用程序）。如何在調用應用程序中給出hello world的路徑以及將Hello World應用程序放在哪裏（我的意思是，我應該在我的項目中導入hello world，還是隻在我的調用應用程序中指定它的URL）..？請給出一個編碼例？？？

Answer 1

參見：iPhone App Programming Guide

這是你的第二個應用程序必須做什麼，以處理從第一公開徵集：

- (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url { 
    if ([[url scheme] isEqualToString:@"todolist"]) { 
     ToDoItem *item = [[ToDoItem alloc] init]; 
     NSString *taskName = [url query]; 
     if (!taskName || ![self isValidTaskString:taskName]) { // must have a task name 
      [item release]; 
      return NO; 
     } 
     taskName = [taskName stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; 

     item.toDoTask = taskName; 
     NSString *dateString = [url fragment]; 
     if (!dateString || [dateString isEqualToString:@"today"]) { 
      item.dateDue = [NSDate date]; 
     } else { 
      if (![self isValidDateString:dateString]) { 
       [item release]; 
       return NO; 
      } 
      // format: yyyymmddhhmm (24-hour clock) 
      NSString *curStr = [dateString substringWithRange:NSMakeRange(0, 4)]; 
      NSInteger yeardigit = [curStr integerValue]; 
      curStr = [dateString substringWithRange:NSMakeRange(4, 2)]; 
      NSInteger monthdigit = [curStr integerValue]; 
      curStr = [dateString substringWithRange:NSMakeRange(6, 2)]; 
      NSInteger daydigit = [curStr integerValue]; 
      curStr = [dateString substringWithRange:NSMakeRange(8, 2)]; 
      NSInteger hourdigit = [curStr integerValue]; 
      curStr = [dateString substringWithRange:NSMakeRange(10, 2)]; 
      NSInteger minutedigit = [curStr integerValue]; 

      NSDateComponents *dateComps = [[NSDateComponents alloc] init]; 
      [dateComps setYear:yeardigit]; 
      [dateComps setMonth:monthdigit]; 
      [dateComps setDay:daydigit]; 
      [dateComps setHour:hourdigit]; 
      [dateComps setMinute:minutedigit]; 
      NSCalendar *calendar = [NSCalendar currentCalendar]; 
      NSDate *itemDate = [calendar dateFromComponents:dateComps]; 
      if (!itemDate) { 
       [dateComps release]; 
       [item release]; 
       return NO; 
      } 
      item.dateDue = itemDate; 
      [dateComps release]; 
     } 

     [(NSMutableArray *)self.list addObject:item]; 
     [item release]; 
     return YES; 
    } 
    return NO; 
} 

而且第一個應用程序打開它就像這樣：

NSURL *myURL = [NSURL URLWithString:@"todolist://www.acme.com?Quarterly%20Report#200806231300"]; 
[[UIApplication sharedApplication] openURL:myURL];