iPhone SDK開發:本地文本文件內容的讀取 – iPhone手機開發技術文章 iPhone軟體開發教學課程

step1:新建一個基於單一視圖的工程,並起名為TextfileRead。

step2:打開ViewController.h文件,作如下編寫:

[cpp]
#import <UIKit/UIKit.h>  
 
@interface ViewController : UIViewController{ 
   
     
    NSArray *contents; 

@property (nonatomic,retain) NSArray *contents; 
 
@end 
#import <UIKit/UIKit.h>

@interface ViewController : UIViewController{
 
   
    NSArray *contents;
}
@property (nonatomic,retain) NSArray *contents;

@end
step3:打開ViewController.m文件,作如下編寫:

[cpp]
#import "ViewController.h"  
 
@implementation ViewController 
@synthesize contents; 
 
– (void)didReceiveMemoryWarning 

    [super didReceiveMemoryWarning]; 
    // Release any cached data, images, etc that aren't in use.  

 
#pragma mark – View lifecycle  
 
– (void)viewDidLoad 

    [super viewDidLoad]; 
    // Do any additional setup after loading the view, typically from a nib.  
     
    NSError *error; 
    NSString *textContents = [NSString stringWithContentsOfFile:[[NSBundle mainBundle]pathForResource:@"book_list" ofType:@"rtf"] encoding:NSUTF8StringEncoding error:&error]; 
     
    if(textContents == nil) 
    { 
        NSLog(@"Error reading text file. %@",[error localizedFailureReason]); 
    } 
    contents = [textContents componentsSeparatedByString:@" "]; 
    NSLog(@"Number of lines in the file: %d",[contents count]); 
    NSInteger idx; 
    NSLog(@"%d",[contents count]); 
    for(idx = 0; idx < [contents count]; idx++) 
    { 
        NSString *current = [contents objectAtIndex:idx]; 
        NSLog(@"%@",current); 
        
    } 
   

#import "ViewController.h"

@implementation ViewController
@synthesize contents;

– (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Release any cached data, images, etc that aren't in use.
}

#pragma mark – View lifecycle

– (void)viewDidLoad
{
    [super viewDidLoad];
 // Do any additional setup after loading the view, typically from a nib.
   
    NSError *error;
    NSString *textContents = [NSString stringWithContentsOfFile:[[NSBundle mainBundle]pathForResource:@"book_list" ofType:@"rtf"] encoding:NSUTF8StringEncoding error:&error];
   
    if(textContents == nil)
    {
        NSLog(@"Error reading text file. %@",[error localizedFailureReason]);
    }
    contents = [textContents componentsSeparatedByString:@" "];
    NSLog(@"Number of lines in the file: %d",[contents count]);
    NSInteger idx;
    NSLog(@"%d",[contents count]);
    for(idx = 0; idx < [contents count]; idx++)
    {
        NSString *current = [contents objectAtIndex:idx];
        NSLog(@"%@",current);
      
    }
 
}

step4:運行,見效果:

 

 

 

摘自 Evolution

 

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