在 plist 文件中添加字典

Question

我需要在我的 plist 中添加项目 (organizations.plist) 我的 plist 按以下方式组织：我有根字典，在这本中，我还有其他字典...

<?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>1</key>
    <dict>
        <key>Address</key>
        <string>Address</string>
        <key>City</key>
        <string>City</string>
        <key>Description</key>
        <string>Description</string>
        <key>Name</key>
        <string>name</string>
        <key>Coordonates</key>
        <string>40.781208, 35.219622</string>
    </dict>
</dict>
</plist>

然后我尝试通过以下代码添加字典：

NSString *filePath = [[NSBundle mainBundle] pathForResource:@"organizations" ofType:@"plist"];
NSMutableDictionary *plist = [NSMutableDictionary dictionaryWithContentsOfFile:filePath];

NSMutableDictionary *newItem = [NSMutableDictionary dictionary];
[newItem setValue:@"address" forKey:@"address"];
[newItem setValue:@"City" forKey:@"City"];
[newItem setValue:@"32.067487, 34.785156" forKey:@"Coordonates"];
[newItem setValue:@"Description" forKey:@"Description"];
[newItem setValue:@"Name" forKey:@"Name"];

NSArray * allKeys = [plist allKeys];
int count = [allKeys count] + 1;
NSString *strFromInt = [NSString stringWithFormat:@"%d",count];
[plist setObject:newItem forKey:strFromInt];
[plist writeToFile:filePath atomically:NO];
[plist release];
NSLog([plist description]);

日志很好，添加了 newItem，但是如果我打开 xCode 中的 organizations.plist 文件，我发现没有添加任何内容

Answer 1

首先将您的 plist file 复制到 document directory。

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,
                                                                 NSUserDomainMask,
                                                                 YES);
            plistPath = [[paths lastObject] stringByAppendingPathComponent:@"organizations.plist"];


            if (![[NSFileManager defaultManager] fileExistsAtPath:plistPath]){
                NSString *bundle = [[NSBundle mainBundle] pathForResource:@"organizations" ofType:@"plist"];
                BOOL sucesss = [[NSFileManager defaultManager] copyItemAtPath:bundle toPath:plistPath error:&error];
                if (!sucesss) {
                    NSLog(@"Exception fail to copyItemAtPath : %@",[error description]);
                }
            }

然后当您需要写入文件时，您必须从 document directory 获取 plist 并需要在那里 update。

NSMutableDictionary *plist = [NSMutableDictionary dictionaryWithContentsOfFile: plistPath];
NSMutableDictionary *newItem = [NSMutableDictionary dictionary];
[newItem setValue:@"address" forKey:@"address"];
[newItem setValue:@"City" forKey:@"City"];
[newItem setValue:@"32.067487, 34.785156" forKey:@"Coordonates"];
[newItem setValue:@"Description" forKey:@"Description"];
[newItem setValue:@"Name" forKey:@"Name"];

NSArray * allKeys = [plist allKeys];
int count = [allKeys count] + 1;
NSString *strFromInt = [NSString stringWithFormat:@"%d",count];
[plist setObject:newItem forKey:strFromInt];
[plist writeToFile:filePath atomically:NO];
[plist release];
NSLog([plist description]);

在 plist 文件中添加字典

Adding dictionary in plist file

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ios