查询plist是一个字典数组 [英] Query plist that is an array of dictionary

问题描述

我有一个有一系列dicts的plist。在dict中有一个名为UID的KEY。我想查询plist，其中UID =1234..我将如何搜索？

I have a plist that has an array of dicts. in the dict there is a KEY with the name UID. I want to query the plist where UID="1234" .. how would I search?

sample

<array>
   <dict>
      <key>UID</key>
      <string>1234</string>
      <key>name</key>
      <string>bob</string>
   </dict>
   ....
</array>

推荐答案

将plist作为一组词典读入然后在 NSArray上使用 filteredArrayUsingPredicate：方法：

Read in the plist as an array of dictionaries and then use filteredArrayUsingPredicate: method on NSArray:

NSString *path = [[NSBundle mainBundle] pathForResource:@"MyInfo" ofType:@"plist"];
NSArray *plistData = [NSArray arrayWithContentsOfFile:path];
NSPredicate *filter = [NSPredicate predicateWithFormat:@"UID = %d", 1234];
NSArray *filtered = [plistData filteredArrayUsingPredicate:filter];
NSLog(@"found matches: %@", filtered);

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