objective-c - 将 JSON 响应字典复制到 plist

Question

我有一个包含 JSON 响应和 plist 文件的字典。我想用 JSON 响应值更新我的 plist 文件中的值。我该怎么做？

Answer 1

这就是我所做的，我现在正在努力，但我已经到达那里了:

---

JSON 到字典:

NSString *jsonString = [[NSString alloc] initWithData:response encoding:NSUTF8StringEncoding];
//NSLog(@"%@",jsonString);

NSArray *result = [jsonString JSONValue];

for(NSDictionary *dictionary in result){
    return dictionary; //if you are getting more then one row, do something here
}

---

保存字典:

id plist = plistDict;

NSString *errorDesc;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0]; 
NSString *plistPath = [documentsDirectory stringByAppendingPathComponent:@"Data.plist"];
NSLog(@"%@",plistPath);

NSData *xmlData;
NSString *error;

xmlData = [NSPropertyListSerialization dataFromPropertyList:plist
                                                     format:NSPropertyListXMLFormat_v1_0
                                           errorDescription:&error];
if(xmlData) {
    if ([xmlData writeToFile:plistPath atomically:YES]) {
        NSLog(@"Data successfully saved.");
    }else {
        NSLog(@"Did not managed to save NSData.");
    }

}
else {
    NSLog(@"%@",errorDesc);
    [error release];
}
}

---

如果你想更新值，我会说你应该打开plist，把它放在一个字典中，更新字典中的值，然后再次将字典保存到plist。

希望这对您有所帮助。