Question

我试图将NSMainBundle中的现有pdf文件复制到NSDocumentsDirectory中。稍后将此文件加载到uiwebview中。我似乎无法理解为什么它不复制文件。对此有何帮助？

 NSFileManager *fileManager = [NSFileManager defaultManager];
NSError *error;
NSArray *paths = NSSearchPathForDirectoriesInDomains( NSDocumentDirectory,
                                                     NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];

NSString *resourceDBFolderPath = [[NSBundle mainBundle] pathForResource:@"document" ofType:@"pdf"];


[fileManager copyItemAtPath:resourceDBFolderPath toPath:documentsDirectory error:&error];



NSArray *path1 = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *basePath =  [path1 objectAtIndex:0];
NSString *fileLoc = [basePath stringByAppendingString:@"document.pdf"];
NSURL *url = [NSURL fileURLWithPath:fileLoc];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
[webview loadRequest:request];

Answer 1

您的目标路径必须包含文件名。

来自文档：

dstPath

放置srcPath副本的路径。此路径必须包含新位置中的文件或目录的名称。此参数不得为零。

Answer 2

使用以下内容替换您的代码来源：

NSFileManager *fileManager = [NSFileManager defaultManager];
NSError *error;
NSArray *paths = NSSearchPathForDirectoriesInDomains( NSDocumentDirectory,
                                                     NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *documentDirectoryPath = [documentsDirectory stringByAppendingPathComponent:@"document.pdf"];
NSString *resourceDBBundlePath = [[NSBundle mainBundle] pathForResource:@"document" ofType:@"pdf"];

[fileManager copyItemAtPath:resourceDBBundlePath toPath:documentDirectoryPath error:&error];

如FD_所述，您的目标路径需要包含您的文件名。

NSMainbundle到NSDocumentsDirectory - 复制PDF

2 个答案: