iOS无法写入plist文件

Question

我想把'[NSString：NSDictionary]'这样的字典写成一个plist文件。但是当我打电话给 -writeToFile： 时，它总是给我一个假的。以下是dataDic中的数据：

Printing description of dataDic:
{
5 =     {
    category = 5;
    img = “img”;
    name = “sport”;
};
1 =     {
    category = 1;
    img = “img”;
    name = “music”;
};
}

以下是我的代码：

NSMutableDictionary *dataDic = [NSMutableDictionary dictionary];
for (NSDictionary* dict in arr) {
    [dataDic setObject:dict forKey:dict[@"category"]];
}
NSString *plistPath = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES).firstObject;
NSString *filename=[plistPath stringByAppendingPathComponent:@"test.plist"];
NSFileManager* fm = [NSFileManager defaultManager];
[fm createFileAtPath:filename contents:nil attributes:nil];
BOOL boo =  [dataDic writeToFile:filename atomically:YES];

Answer 1

尝试以下代码

NSDictionary * dataDic = "YOUR_DICTIONARY" 
    NSString *error = nil;
    NSData *plistData = [NSPropertyListSerialization dataFromPropertyList:plistDict format:NSPropertyListXMLFormat_v1_0 errorDescription:&error];

if(plistData)
{
    [plistData writeToFile:plistPath atomically:YES];
    NSLog(@"Data saved sucessfully");
}
else
{
  NSLog(@"Data not saved ");;
}

如果这对你有用，请告诉我。