如何对包含NSDictionary的NSArray进行排序? [英] How to sort a NSArray which contains NSDictionary?
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问题描述
我有一个这样的plist:
I have a plist like this:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>highscores</key>
<array>
<dict>
<key>highscoreInSeconds</key>
<string>9</string>
<key>levelName</key>
<string>1</string>
<key>name</key>
<string>Black</string>
</dict>
<dict>
<key>highscoreInSeconds</key>
<string>12</string>
<key>levelName</key>
<string>1</string>
<key>name</key>
<string>Black</string>
</dict>
</array>
</dict>
</plist>
现在我想通过 highscoreInSeconds
。
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *plistDirectory = [paths objectAtIndex:0];
NSString* fullPath = [plistDirectory stringByAppendingPathComponent:@"data.plist"];
NSMutableDictionary* pData = [[NSMutableDictionary alloc] initWithContentsOfFile:fullPath];
NSMutableArray* highscores = [pData valueForKey:@"highscores"];
我现在如何排序?
非常感谢!
:)
Thank you very much! :)
祝你有愉快的一天。
PS:它看起来应该是这样的结束:
PS: It should look like this at the end:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>highscores</key>
<array>
<dict>
<key>highscoreInSeconds</key>
<string>12</string>
<key>levelName</key>
<string>1</string>
<key>name</key>
<string>Black</string>
</dict>
<dict>
<key>highscoreInSeconds</key>
<string>9</string>
<key>levelName</key>
<string>1</string>
<key>name</key>
<string>Black</string>
</dict>
</array>
</dict>
</plist>
你不需要说我怎么写一个我知道的plist。
You don't need to say me how to write a plist i knew that.
推荐答案
我用这个:
NSArray* sorted = [highscoreAll sortedArrayUsingComparator:(NSComparator)^(NSDictionary *item1, NSDictionary *item2) {
NSString *score1 = [item1 objectForKey:@"highscoreInSeconds"];
NSString *score2 = [item2 objectForKey:@"highscoreInSeconds"];
return [score1 compare:score2 options:NSNumericSearch];
}];
并且有效。
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