iPhone中如何从Application Bundle中读取文件

来源：互联网发布：web数据挖掘 pdf 编辑：程序博客网时间：2024/06/06 07:50

首先必须将文件加入Xcode工程的Resources目录。然后可以如下访问文件，假设文件为MyFile.txt：

1 NSString *filePath = [[NSBundle mainBundle] pathForResource:@"MyFile" ofType:@"txt" ];

2 NSData *myData = [NSData dataWithContentsOfFile:filePath];

3 if (myData) {

4 // do something useful

5 }

一段将help文本文件读入UIWebView的完整示例：

1 NSString *filePath = [[NSBundle mainBundle] pathForResource:@"HelpDoc" ofType:@"htm" ];

2 NSData *htmlData = [NSData dataWithContentsOfFile:filePath];

3 if (htmlData) {

4 [webView loadData:htmlData MIMEType:@"text/html" textEncodingName:@"UTF-8" baseURL:[NSURL URLWithString:@" http://iphoneincubator.com " ]];

5 }

如果想将文件读入字符串，则可以用UITextView显示，例如：

1 NSString *filePath = [[NSBundle mainBundle] pathForResource:@"important" ofType:@"txt" ];

2 if (filePath) {

3 NSString *myText = [NSString stringWithContentsOfFile:filePath];

4 if (myText) {

5 textView.text= myText;

6 }

7 }

NSString *documentPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];

NSString *filePath = [documentPath stringByAppendingPathComponent:@"test.rtf"];

NSData *fileData = [NSData dataWithContentsOfFile:filePath];

NSString *testStr = [[NSString alloc] initWithData:fileData encoding:NSUTF8StringEncoding];

NSLog(@"translate by DATA is : %@", testStr);

或者这样 :

NSString *documentPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];

NSString *filePath = [documentPath stringByAppendingPathComponent:@"test.rtf"];

NSString *fileString = [NSString stringWithContentsOfFile:filePath];