如何在iphone的plist文件中保存值？ [英] How to save a value in a plist file in iphone?

问题描述

我是iphone开发的新手。我使用下面的代码将值添加到plist但是在执行代码后检查plist时我没有看到plist中保存的任何值。我哪里出错了？请帮帮我。我创建的plist是在资源文件夹中。谢谢。

I am new to iphone development.I am using the below code to add the value to the plist but when check the plist after executing the code i dont see any value saved in the plist.Where do i go wrong? please help me out.The plist i have created is in the resource folder.Thanks.

NSString *path = [[NSBundle mainBundle] bundlePath];
NSString *finalPath = [path stringByAppendingPathComponent:@"regvalue.plist"];
NSMutableDictionary* plistDict = [[NSMutableDictionary alloc] initWithContentsOfFile:finalPath];
[plistDict setValue:@"hello" forKey:@"choice"];
[plistDict writeToFile:finalPath atomically: YES];

用于检索值

NSString *path = [[NSBundle mainBundle] bundlePath];
NSString *finalPath = [path stringByAppendingPathComponent:@"regvalue.plist"];
NSMutableDictionary* plistDict = [[NSMutableDictionary alloc] initWithContentsOfFile:finalPath];
NSString *value;
value = [plistDict objectForKey:@"choice"];
NSLog(@"the value is %@",value);

它只给出空值。请帮帮我。谢谢。

It gives only null value.Please help me out.Thanks.

推荐答案

资源文件夹不可写。您应该将其保存到文档文件夹中。

The resources folder is not writeable. You should save it into the documents folder.

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