如何优化 UILocalNotification 流程

发布于 2024-10-11 17:52:48 字数 1010 浏览 2 评论 0原文

我正在尝试使用实体上的获取请求发送多个 localNofications 虽然这段代码工作正常

   NSFetchRequest *myRequest = [[NSFetchRequest alloc] init];
   NSPredicate *predicate = [NSPredicate predicateWithFormat:@"active == YES"];
  [myRequest setEntity:[NSEntityDescription entityForName:@"Entry" inManagedObjectContext:managedObjectContext]];
  [myRequest setPredicate:predicate];
  NSError *error = nil;
  NSArray *fetchedObjects = [self.managedObjectContext executeFetchRequest: myRequest error: &error];
  if (fetchedObjects == nil){
 // Deal with error...
 }

// We fill the NSMutableArray with the values of the fetch
self.activeList = [[NSMutableArray alloc] initWithArray:[fetchedObjects valueForKey:@"textbody"]];
[self scheduleAlarms:[self.activeList objectAtIndex:0]];
[fetchedObjects release]; //this line crashes the app

1) 如果我释放 fetchedObjects，应用程序就会崩溃。我不是应该释放它吗？

2）我可以使用 localNotif.userinfo 来优化代码，而不是调用方法来使用 activeList 中的字符串安排每个 localNotification 吗？我不知道该怎么做。

谢谢，

迈克

原文

I'm trying to send multiple localNofications using a fetch request on an entity
And though this code works fine

   NSFetchRequest *myRequest = [[NSFetchRequest alloc] init];
   NSPredicate *predicate = [NSPredicate predicateWithFormat:@"active == YES"];
  [myRequest setEntity:[NSEntityDescription entityForName:@"Entry" inManagedObjectContext:managedObjectContext]];
  [myRequest setPredicate:predicate];
  NSError *error = nil;
  NSArray *fetchedObjects = [self.managedObjectContext executeFetchRequest: myRequest error: &error];
  if (fetchedObjects == nil){
 // Deal with error...
 }

// We fill the NSMutableArray with the values of the fetch
self.activeList = [[NSMutableArray alloc] initWithArray:[fetchedObjects valueForKey:@"textbody"]];
[self scheduleAlarms:[self.activeList objectAtIndex:0]];
[fetchedObjects release]; //this line crashes the app

1) if I release fetchedObjects, the app crashes. Aren't I supposed to release it ?

2) Could I use the localNotif.userinfo to optimize the code instead of calling a method to schedule each localNotification with the strings in my activeList ? I can't figure out how to do it.

Thanks,

Mike

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