xcode 如何写入 plist 文件？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/4116179/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
How can I write to a plist file?
提问by Andrew
I wrote this small bit of code to write to a plist file. I am not getting any errors or warnings from XCode, so I am really lost. "Root" is not defined in this code section, but it is just a dictionary of the data that I pulled from the plist.
我写了一小段代码来写入 plist 文件。我没有从 XCode 收到任何错误或警告，所以我真的很迷茫。此代码部分中未定义“Root”，但它只是我从 plist 中提取的数据的字典。
Does anyone have an idea of why this would not write to a plist file? It literally does not change the file at all.
有谁知道为什么这不会写入 plist 文件？它实际上根本不会更改文件。
NSMutableArray *newReports = [[NSMutableArray alloc] init];
newReports = [[Root objectForKey:@"Reports"] mutableCopy ];
//Creating data model for new report
NSMutableDictionary *newReport = [[NSMutableDictionary alloc] init];
NSString *tempTitle = titleField.text;
NSString *tempEmployee = employeeField.text;
NSArray *tempNodes = [[NSArray alloc] init];
[newReport setObject:tempTitle forKey:@"Title"];
[newReport setObject:tempEmployee forKey:@"Employee"];
[newReport setObject:tempNodes forKey:@"Nodes"];
[newReports addObject:newReport];
NSMutableDictionary *newRoot = [[NSMutableDictionary alloc] init];
[newRoot setObject:newReports forKey:@"Reports"];
//Writing data to plist
NSString *Path = [[NSBundle mainBundle] bundlePath];
NSString *filePath = [Path stringByAppendingPathComponent:@"data.plist"];
[newRoot writeToFile:filePath atomically: YES];
Thanks for the help!
谢谢您的帮助！
回答by Aaron Saunders
try constructing your file path like this
尝试像这样构建您的文件路径
NSArray *paths = NSSearchPathForDirectoriesInDomains( NSDocumentDirectory,
NSUserDomainMask, YES);
NSString *documentsDirectoryPath = [paths objectAtIndex:0];
NSString *filePath = [documentsDirectoryPath
stringByAppendingPathComponent:@"data.plist"];
[newRoot writeToFile:filePath atomically: YES];
回答by Firoze Lafeer
If you're running this on a device, the main bundle is read only. You'll need to write this plist into the user's documents directory.
如果您在设备上运行它，则主包是只读的。您需要将此 plist 写入用户的文档目录。
