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[英]how to add multiple arrays in plist file programmatically in iPhone
[英]Add index in plist file programmatically
我正在以编程方式直接创建一个plist文件到documents目录。 这是我的代码。
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *path = [documentsDirectory stringByAppendingPathComponent:@"myList.plist"];
NSFileManager *fileManager = [NSFileManager defaultManager];
if (![fileManager fileExistsAtPath: path])
{
path = [documentsDirectory stringByAppendingPathComponent: [NSString stringWithFormat: @"myList.plist"] ];
}
NSMutableArray *data ;
if ([fileManager fileExistsAtPath: path])
{
data = [[NSMutableArray alloc] initWithContentsOfFile: path];
}
else
{
// If the file doesn’t exist, create an empty dictionary
data = [[NSMutableArray alloc] init];
}
data = [[NSMutableArray alloc] initWithCapacity:5];
[data addObject:value1];
[data addObject:value2];
[data addObject:value3];
它使用这种格式创建plist文件。
<array>
<string>1</string>
<string>2</string>
<string>3</string>
</array>
现在,我想为其添加另一个索引,
<array>
<string>1</string>
<string>2</string>
<string>3</string>
</array>
<array>
<string>11</string>
<string>22</string>
<string>33</string>
</array>
如何在我的plist文件中以编程方式添加索引?
任何帮助或建议,将不胜感激!
谢谢
尝试
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *path = [documentsDirectory stringByAppendingPathComponent:@"myList.plist"];
NSMutableArray *data = [[NSMutableArray alloc] initWithContentsOfFile: path];
if (!data) {
data = [NSMutableArray array];
}
[data addObject:@[value1,value2,value3]];
[data writeToFile:path atomically:YES];
您应该将plist整理成字典。 对应于每个键,您可以存储数组对象。 这很容易。 使用适当的键作为索引号将数组存储到NSDictionary
。 然后把那个字典痛到plist
<dict>
<key>0</key>
<array>
<string>1</string>
<string>2</string>
<string>3</string>
</array>
<key>1</key>
<array>
<string>11</string>
<string>22</string>
<string>33</string>
</array>
</dict>
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