数据读写——NSFileHandle(3)

p>    fileManager = [NSFileManager defaultManager];  

p>      

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

p>        NSLog(@"存在该文件");  

p>        NSFileHandle *fileHandle;  

p>        fileHandle = [NSFileHandle fileHandleForReadingAtPath:filePath];  

p>          

p>        NSString *outputString = [[NSString alloc] initWithData:[fileHandle availableData] encoding:NSUTF8StringEncoding];  

p>        [fileHandle closeFile];  

p>          

p>        self.informationView.text = outputString;  

p>    }  

p>}  

p> 

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"];

p>    fileManager = [NSFileManager defaultManager];

p>    

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

p>        NSLog(@"存在该文件");

p>        NSFileHandle *fileHandle;

p>        fileHandle = [NSFileHandle fileHandleForReadingAtPath:filePath];

p>        

p>        NSString *outputString = [[NSString alloc] initWithData:[fileHandle availableData] encoding:NSUTF8StringEncoding];

p>        [fileHandle closeFile];

p>        

p>        self.informationView.text = outputString;

p>    }

p>}

p> 

p>实现其他方法

p>[cpp]

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

p>    [self.view endEditing:YES];  

p>}  

p>  

p>- (IBAction)tapped:(id)sender {  

p>    self.informationView.text = @"";  

p>}  

p> 

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

p>    [self.view endEditing:YES];

p>}

p> 

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

p>    self.informationView.text = @"";

p>}

p>一个隐藏键盘，一个手势操作。

p> 

p>