在运行时读取 plist 文件

Read plist file during runtime

我在我的程序中包含了一个 plist 文件并在本地调用它

     NSString *plistpath = [[NSBundle mainBundle] pathForResource:@"pli" ofType:@"plist"];
     NSDictionary *dict = [NSDictionary dictionaryWithContentsOfFile:plistpath];
     NSArray *cont = [dict allValues];

我希望我的程序在运行时手动(不是通过程序)更新文件、从 plist 文件中添加或删除数据时读取文件,而不必停止执行并启动 运行再次。有什么方法可以实现吗?

请帮忙

您需要了解基于 OS 的 dispatch_source_* 调用 (gcd),以便您可以监控 folder/file 变化。

从这里开始: https://developer.apple.com/documentation/dispatch/1385630-dispatch_source_create

如果您想查看工作示例,可以查看 https://github.com/tblank555/iMonitorMyFiles

的来源

PS:手动更改 NSBundle 对象是一种不好的做法。看来你真正需要的是一个设置视图,只是说。

这是将数据保存在 .plist 文件中的方法

NSArray *paths = NSSearchPathForDirectoriesInDomains (NSDocumentDirectory, NSUserDomainMask, YES);

// get documents path

  NSString *documentsPath = [paths objectAtIndex:0];

// get the path to our Data/plist file

 NSString *plistPath = [documentsPath stringByAppendingPathComponent:@"myData.plist"];
                            NSError *writeError = nil;

 NSData *plistData = [NSPropertyListSerialization dataWithPropertyList:yourDictionary format:NSPropertyListXMLFormat_v1_0 options:NSPropertyListImmutable error:&writeError];

        if(plistData)
          {
             [plistData writeToFile:plistPath atomically:YES];
              NSLog(@"Data saved sucessfully");
          }
          else
          {
              NSLog(@"Error in saveData: %@", writeError.localizedDescription);

          }

从包中读取 plist 并从中获取 Root Dictionary

 NSArray *paths = NSSearchPathForDirectoriesInDomains (NSDocumentDirectory, NSUserDomainMask, YES);
 NSString *documentsPath = [paths objectAtIndex:0];
 NSString *plistPath = [documentsPath stringByAppendingPathComponent:@"myData.plist"];


 if (![[NSFileManager defaultManager] fileExistsAtPath:plistPath])
    {
      plistPath = [[NSBundle mainBundle] pathForResource:@"myData" ofType:@"plist"];
    }

 NSDictionary *resultDic = [[NSDictionary alloc] initWithContentsOfFile:plistPath];