Question

我有3个NSString个对象，我想在应用运行时将其保存到新文件中。

这将有助于我进行远程调试！

如果任何人可以帮助我创建文件并将数据保存到它将非常使用

感谢名单

Answer 1

您可以将文件保存到Documents目录，以下是获取该目录路径的方法：

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *filePath = [documentsDirectory stringByAppendingPathComponent:fileName];

示例写声明：

NSError *error;
BOOL status = [string writeToFile:filePath atomically:YES encoding:NSUTF8StringEncoding error:&error];

Answer 2

在NSString文档中，有一种名为writeToFile:atomically:encoding:error:的方法。

NSError *error;
[@"Write me to file" writeToFile:@"<filepath>" atomically:YES encoding: NSUTF8StringEncoding error:&error];

Answer 3

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);  NSString *documentsDirectory = [paths objectAtIndex:0]; // Get documents directory

NSError *error; BOOL succeed = [myString writeToFile:[documentsDirectory stringByAppendingPathComponent:@"myfile.txt"]
      atomically:YES encoding:NSUTF8StringEncoding error:&error];
 if (!succeed){
        // Handle error here }

source。

Answer 4

以下是如何将NSString保存到Documents文件夹中。保存其他类型的数据也可以通过这种方式实现。

- (void)saveString:(NSString *)stringToSave toDocumentsWithFilename:(NSString *)fileName {

 NSString *documentsFolder = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];
NSString *path = [documentsFolder stringByAppendingPathComponent:fileName];

 [[NSFileManager defaultManager] createFileAtPath:path contents:[stringToSave dataUsingEncoding:NSUTF8StringEncoding] attributes:nil];

}

用法：

NSString *stringWeWantToSave = @"This is an elephant";

NSString *fileName = [NSString stringWithString:@"savedString.txt"];

[self saveString:stringWeWantToSave toDocumentsWithFilename:fileName];

创建NSString数据并将其保存到文件中

4 个答案: