Question

<?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">
<array>
  <array>
    <string>Title 1</string>
    <string>Subtitle 1</string>
    <string>image1.png</string>
  </array>
  <array>
    <string>Title 2</string>
    <string>Subtitle 2</string>
    <string>image2.png</string>
  </array>
</array>
</plist>

这是我正在处理的应用的Plist文件。

我不确定如何使用多个数组的第一个字符串来创建包含所有标题的NSMutableArray，再次为字幕和图像名称创建。

我目前的解决方法是为每种类型的字符串创建3个单独的Plist文件，这可能会造成麻烦。

Answer 1

要在保留plist数据结构的同时回答您的问题，您可以执行以下操作：

NSArray *rootArray = [NSArray arrayWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"your-plist" ofType:@"plist"]];
int numItems = [rootArray count];
NSMutableArray *titles = [NSMutableArray arrayWithCapacity:numItems];
NSMutableArray *subtitles = [NSMutableArray arrayWithCapacity:numItems];
NSMutableArray *images = [NSMutableArray arrayWithCapacity:numItems];

for (NSArray *itemData in rootArray) {
    [titles addObject:[itemData objectAtIndex:0]];
    [subtitles addObject:[itemData objectAtIndex:1]];
    [images addObject:[itemData objectAtIndex:2]];
}

但是，我建议您使用如下结构：

<?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">
<array>
  <dict>
    <key>title</key>
    <string>Title 1</string>
    <key>subtitle</key>
    <string>Subtitle 1</string>
    <key>image</key>
    <string>image1.png</string>
  </dict>
  <dict>
    <key>title</key>
    <string>Title 2</string>
    <key>subtitle</key>
    <string>Subtitle 2</string>
    <key>image</key>
    <string>image2.png</string>
  </dict>
</array>
</plist>

此时您可以使用更明确的代码，如下所示：

NSArray *rootArray = [NSArray arrayWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"your-plist" ofType:@"plist"]];
int numItems = [rootArray count];
NSMutableArray *titles = [NSMutableArray arrayWithCapacity:numItems];
NSMutableArray *subtitles = [NSMutableArray arrayWithCapacity:numItems];
NSMutableArray *images = [NSMutableArray arrayWithCapacity:numItems];

for (NSDictionary *itemData in rootArray) {
    [titles addObject:[itemData objectForKey:@"title"]];
    [subtitles addObject:[itemData objectForKey:@"subtitle"]];
    [images addObject:[itemData objectForKey:@"image"]];
}

Plist中的多个数组

1 个答案: