Question

有没有人有一个示例应用或一些示例代码来在iOS上生成CSV文件？

Answer 1

以下是生成CSV文件的简单代码：

NSArray *csvArray = [myTextView.text componentsSeparatedByString:@"\n"];
NSString *csvString = [csvArray componentsJoinedByString:@","];
NSLog(@"csvString:%@",csvString);

// Create .csv file and save in Documents Directory.

//create instance of NSFileManager
NSFileManager *fileManager = [NSFileManager defaultManager];

//create an array and store result of our search for the documents directory in it
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

//create NSString object, that holds our exact path to the documents directory
NSString *documentsDirectory = [paths objectAtIndex:0];
NSLog(@"Document Dir: %@",documentsDirectory);

NSString *fullPath = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.csv", @"userdata"]]; //add our file to the path
[fileManager createFileAtPath:fullPath contents:[csvString dataUsingEncoding:NSUTF8StringEncoding] attributes:nil]; //finally save the path (file)

Answer 2

以下代码用于生成CSV。

   NSMutableString *mainString=[[NSMutableString alloc]initWithString:@""];
    for(int i=0;i<[commentArray count];i++ ) {
        NSString *string=[[commentArray objectAtIndex:i]objectForKey:@"cmtName"]; 
        string=[string stringByReplacingOccurrencesOfString:@"\"" withString:@"\"\""];
        [mainString appendFormat:@"\"%@\"",string];

        string=[[commentArray objectAtIndex:i]objectForKey:@"cmtDesc"];  
        string=[string stringByReplacingOccurrencesOfString:@"\"" withString:@"\"\""];
        [mainString appendFormat:@",\"%@\"",string];

        string=[[commentArray objectAtIndex:i]objectForKey:@"cmtType"];
        string=[string stringByReplacingOccurrencesOfString:@"\"" withString:@"\"\""];
        [mainString appendFormat:@",\"%@\"",string];

        [mainString appendFormat:@",\"%@\"",string];
        [mainString appendFormat:@"\n"];
    }


    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,  NSUserDomainMask, YES);
    NSString *documentsDirectoryPath = [paths objectAtIndex:0];
    NSString *filePath = [documentsDirectoryPath  stringByAppendingPathComponent:@"Docment.conf"];


    NSData* settingsData;
    settingsData = [mainString dataUsingEncoding: NSASCIIStringEncoding];

    if ([settingsData writeToFile:filePath atomically:YES])
        NSLog(@"writeok");

要导入CSV，请使用此

https://github.com/davedelong/CHCSVParser

Answer 3

我的CHCSVParser将在OS X和iOS上读取和写入CSV文件。它附带了一些如何使用它的例子。

生成CSV示例iphone应用程序/代码

3 个答案: