数据读写——NSFileHandle(2)

p>      

p>    NSString *filePath = [docDir stringByAppendingPathComponent:@"myInfoList.csv"];  

p>      

p>    NSFileManager *fileManager = [NSFileManager defaultManager];  

p>    if (![fileManager fileExistsAtPath:filePath]) {  

p>        [fileManager createFileAtPath:filePath contents:nil attributes:nil];  

p>        NSLog(@"文件创建成功");  

p>    }  

p>      

p>    NSFileHandle *fileHandle = [NSFileHandle fileHandleForUpdatingAtPath:filePath];  

p>    [fileHandle seekToEndOfFile];  

p>    [fileHandle writeData:[inputString dataUsingEncoding:NSUTF8StringEncoding]];  

p>    [fileHandle closeFile];  

p>      

p>    self.nameField.text = @"";  

p>    self.ageField.text = @"";  

p>    self.emailField.text = @"";  

p>}  

p> 

p>- (IBAction)saveInformation:(id)sender {

p>    NSString *inputString = [NSString stringWithFormat:@"%@ - %@ - %@\n",

p>                            self.nameField.text, self.ageField.text, self.emailField.text];

p>    

p>    NSString *docDir = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0];

p>    

p>    NSString *filePath = [docDir stringByAppendingPathComponent:@"myInfoList.csv"];

p>    

p>    NSFileManager *fileManager = [NSFileManager defaultManager];

p>    if (![fileManager fileExistsAtPath:filePath]) {

p>        [fileManager createFileAtPath:filePath contents:nil attributes:nil];

p>        NSLog(@"文件创建成功");

p>    }

p>    

p>    NSFileHandle *fileHandle = [NSFileHandle fileHandleForUpdatingAtPath:filePath];

p>    [fileHandle seekToEndOfFile];

p>    [fileHandle writeData:[inputString dataUsingEncoding:NSUTF8StringEncoding]];

p>    [fileHandle closeFile];

p>    

p>    self.nameField.text = @"";

p>    self.ageField.text = @"";

p>    self.emailField.text = @"";

p>}

p> 

p> 

p>实现读取数据

p>[cpp] 

p>- (IBAction)loadInformation:(id)sender {  

p>    NSString *docDir, *filePath;  

p>    NSFileManager *fileManager;  

p>      

p>    docDir = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0];  

p>    filePath = [docDir stringByAppendingPathComponent:@"myInfoList.csv"];