学步园

这儿有段代码，教大家如何拷贝文件。

- (void) copySampleFilesToMyDocumentsFolder {<br /> NSError *error;<br /> NSFileManager *fileManager = [NSFileManager defaultManager];</p> <p> NSString *bundleRoot = [[NSBundle mainBundle] bundlePath];</p> <p> NSArray *dirContents = [fileManager contentsOfDirectoryAtPath: bundleRoot error: &error];<br /> NSArray *onlyPdf = [dirContents filteredArrayUsingPredicate: [NSPredicate predicateWithFormat: @"self ENDSWITH '.jpg'"]];<br /> NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);<br /> NSString *documentsDir = [paths objectAtIndex: 0];</p> <p> for (int i = 0; i < onlyPdf.count; i++) {<br /> NSString *pdfName = [onlyPdf objectAtIndex: i];</p> <p> NSString *docPdfFilePath = [documentsDir stringByAppendingPathComponent: pdfName];</p> <p> //Using NSFileManager we can perform many file system operations.<br /> BOOL success = [fileManager fileExistsAtPath: docPdfFilePath];</p> <p> if (!success) {<br /> NSString *samplePdfFile = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent: pdfName];</p> <p> success = [fileManager copyItemAtPath: samplePdfFile toPath: docPdfFilePath error: &error];</p> <p> if (!success){}<br /> // NSAssert1(0, @"Failed to copy file '%@'.", [error localizedDescription]);<br /> //debugLog(@"Failed to copy %@ file, error %@", pdfName, [error localizedDescription]);<br /> else {<br /> //debugLog(@"File copied %@ OK", pdfName);<br /> }<br /> }<br /> else {<br /> //debugLog(@"File exits %@, skip copy", pdfName);<br /> }<br /> }<br /> }<br />