从PList中阅读Dictionary时出现错序 [英] False order when reading Dictionary from PList

问题描述

我有一个plist，从我试图访问它的动画序列（在PList中定义），但当我存储在NSDictionary，然后尝试一个一个播放动画，它不是按顺序播放它们。
eg，

  int index = 0; 
 [self playAnimation：[animTypes objectAtIndex：index ++]]; 
 [self playAnimation：[animTypes objectAtIndex：index ++]]; 
  

这是我的Plist的代码：

 < plist version =1.0> 
< dict> 
< key> Boy< / key> 
< dict> 
< key>输入< / key> 
< dict> 
< key>已停用< / key> 
< false /> 
< key> halfCycle< / key> 
< true /> 
< key> fps< / key> 
< integer> 1< / integer> 
< key> defaultFrame< / key> 
< integer> 0< / integer> 
< key> useZwoptex< / key> 
< true /> 
< key> frames< / key> 
< array> 
< string> boy-000.png< / string> 
< / array> 
< / dict> 
< key> Jump< / key> 
< dict> 
< key>已停用< / key> 
 < key> halfCycle< / key> 
< true /> 
< key> fps< / key> 
< integer> 13< / integer> 
< key> defaultFrame< / key> 
< integer> 0< / integer> 
< key> useZwoptex< / key> 
< true /> 
< key> frames< / key> 
< array> 
< string> boyjump-000.png< / string> 
< string> boyjump-001.png< / string> 
< string> boyjump-002.png< / string> 
< / array> 
< / dict> 
< key>周转< / key> 
< dict> 
< key>已停用< / key> 
< false /> 
< key> halfCycle< / key> 
< true /> 
< key> fps< / key> 
< integer> 21< / integer> 
< key> defaultFrame< / key> 
< integer> 0< / integer> 
< key> useZwoptex< / key> 
< true /> 
< key> frames< / key> 
< array> 
< string> boyturnaround-000.png< / string> 
< string> boyturnaround-001.png< / string> 
< string> boyturnaround-002.png< / string> 
< / array> 
< / dict> 
< / dict> 
< / plist> 
  

---

Plz指导我如何按顺序加载动画？

解决方案

是的，djhworld是正确的 - NSDictionary对象不会按照创建的顺序返回条目。 >

我对Objective C很新，并且遇到了同样的问题。我熟悉的解决方案允许我仍然使用单个NSDictionary，但在使用它之前，我基于键排序条目。在util类中，我对键进行排序并返回一个有序数组：

  +（NSArray *）sortedKeysForDictionary： dict {
 NSArray * keys = [dict allKeys]; 
 NSMutableArray * anArray = [NSMutableArray arrayWithArray：keys]; 
 keys = [anArray sortedArrayUsingSelector：@selector（localizedCompare :)]; 
 return keys; 
} 
  

然后我只是通过键从字典中拉出来。

   - （void）processEntries {
 NSArray * keys = [Utils sortedKeysForDictionary：myDictionary]; 
 for（int i = 0; i< keys.count; i ++）{
 NSString * key = [keys objectAtIndex：i]; 
 id dictEntry = [myDictionary valueForKey：key]; 
 
 //处理此处的条目
 
} 
 
} 
  

唯一的警告是你必须使用正确排序的键。我采用了以nnn：keyName形式使用键的惯例，因此我可以对它们进行排序，但仍然提供人类可读的名称。例如001：进程XYZ。

I have a plist from which i am trying to access its animations in sequence (as defined in the PList) but when I store it in NSDictionary and then try to play animation one by one it is not playing them in sequence. e.g,

int index = 0;
[self playAnimation:[animTypes objectAtIndex:index++]];
[self playAnimation:[animTypes objectAtIndex:index++]];

This is the code of my Plist:

<plist version="1.0">
<dict>
<key>Boy</key>
    <dict>
    <key>Enter</key>
    <dict>
        <key>disabled</key>
        <false/>
        <key>halfCycle</key>
        <true/>
        <key>fps</key>
        <integer>1</integer>
        <key>defaultFrame</key>
        <integer>0</integer>
        <key>useZwoptex</key>
        <true/>
        <key>frames</key>
        <array>
            <string>boy-000.png</string>
        </array>
    </dict>
    <key>Jump</key>
    <dict>
        <key>disabled</key>
        <false/>
        <key>halfCycle</key>
        <true/>
        <key>fps</key>
        <integer>13</integer>
        <key>defaultFrame</key>
        <integer>0</integer>
        <key>useZwoptex</key>
        <true/>
        <key>frames</key>
        <array>
            <string>boyjump-000.png</string>
            <string>boyjump-001.png</string>
            <string>boyjump-002.png</string>
        </array>
    </dict>
    <key>Turnaround</key>
    <dict>
        <key>disabled</key>
        <false/>
        <key>halfCycle</key>
        <true/>
        <key>fps</key>
        <integer>21</integer>
        <key>defaultFrame</key>
        <integer>0</integer>
        <key>useZwoptex</key>
        <true/>
        <key>frames</key>
        <array>
            <string>boyturnaround-000.png</string>
            <string>boyturnaround-001.png</string>
            <string>boyturnaround-002.png</string>
        </array>
    </dict>
</dict>
</plist>

---

Plz guide me how to load the animations in sequence?

解决方案

Yes, djhworld is correct - NSDictionary objects don't return entries in the order they're created.

I'm fairly new to Objective C and came up against the very same problem. The solution I cooked up allowed me to still use a single NSDictionary, but before using it I sort the entries based on the key. In a util class, I sort the keys and return a sorted array:

+(NSArray *) sortedKeysForDictionary:(NSDictionary *)dict {
    NSArray *keys = [dict allKeys];
    NSMutableArray *anArray = [NSMutableArray arrayWithArray:keys];
    keys = [anArray sortedArrayUsingSelector:@selector(localizedCompare:)]; 
    return keys;
}

Then I just run through the keys pulling them from the Dictionary in order...

-(void) processEntries {
    NSArray *keys = [Utils sortedKeysForDictionary:myDictionary];
    for (int i=0; i<keys.count; i++){
        NSString *key = [keys objectAtIndex:i];
        id dictEntry = [myDictionary valueForKey:key];

        // process the entry here

    }

}

The only caveat is that you have to use keys that sort properly. I've adopted a convention of using keys in the form nnn:keyName, so I can sort them but still provide human-readable names. e.g. 001:process XYZ.

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