ios - 在 UITextView 中显示 txt 文件

Question

我是 iPhone 开发新手，需要帮助。我正在开发一个包含 UITextView 的 iPhone 应用程序。我的文档中有一个 txt 文件列表。我正在尝试使用 UITextView 来显示文本文件的内容，但我很难让它显示任何东西。我使用这些代码希望 UITextView 显示 txt 文件:

  NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectoryPath = [paths objectAtIndex:0];
NSFileManager *manager = [NSFileManager defaultManager];
self.frlistName2 = [[manager contentsOfDirectoryAtPath:documentsDirectoryPath error:nil]pathsMatchingExtensions:[NSArray arrayWithObject:@"txt"]];
NSString *obj = @".txt";
frlisturls2 = [[NSMutableArray alloc] initWithObjects:nil];
NSString *temp;
NSMutableString *mp3Path = [[NSMutableArray alloc] init];
int j =0;
for(int i =0 ; i< [frlistName2 count]; i++)
{
    mp3Path  = [NSMutableString stringWithString:documentsDirectoryPath];
    [mp3Path appendString:@"/"];

    temp = [frlistName2 objectAtIndex:i];
    if([temp hasSuffix :obj])
    {
        [mp3Path appendString: temp];
        [frlisturls2 addObject: mp3Path];
        j++;
    }
    [mp3Path release];
}
NSLog(@"frlisturls2 is%@:",frlisturls2);
[super viewDidLoad];
fileName = [[NSString alloc]init];
fileName=[frlisturls2 objectAtIndex:iRow ];
NSLog(@"the fileName is %@",fileName);
stringSources = [NSString stringWithContentsOfFile: fileName encoding:NSUTF8StringEncoding error:nil];
frtextview=[[UITextView alloc]init];
[frtextview setText:stringSources];
NSLog(@"the file is :%@",stringSources);

文件名显示正确的网址，但字符串源没有文字。很抱歉这么长的帖子!希望对您有所帮助!

Answer 1

这就是我将txt文件读取到txtView的方式

但有时文件无法用文本编辑器打开，

NSString *filePath = @"Users/macbookpro/Library/Application
 Support/iPhone Simulator/4.3.2/Applications/ ...
 /Documents/sample.txt"; 
NSString *txtContent = [[NSString alloc]
                                    initWithContentsOfFile:filePath
                                    encoding:NSUTF8StringEncoding
                                    error:&error];

将 txtContent 加载到您的 textView.text