最近需要用到文件导入导出功能，导出使用类UIDocumentInteractionController很容易实现，但文件导入却找了好久都没找到符合需求的，本来找到UIDocumentBrowserViewController，以为可以了，可是并不能满足需求，可能是我不会用吧，而且UIDocumentBrowserViewController需要iOS11以上的系统版本才支持，最终看到一篇文章，让我见到了光明：https://www.jianshu.com/p/607b96ddc757，使用UIDocumentPickerViewController完美解决问题，支持iOS8。
话不多说，上代码！！
1、本地文件导出
#pragma mark 导出
- (void)exportFile {
[selfopenDocumentInResourceFolder];
}
- (void)openDocumentInResourceFolder {
NSString *filePath = [[NSBundle mainBundle] pathForResource:@"iOSNotes"ofType:@"pdf"];
_documentController = [UIDocumentInteractionController interactionControllerWithURL:[NSURL fileURLWithPath:filePath]];
_documentController.delegate = self;
// _documentController.UTI = @"com.adobe.pdf";//
[_documentControllerpresentOpenInMenuFromRect:CGRectZero inView:self.view animated:YES];
}
2、导入文件
#pragma mark 导入
- (void)importFile {
[selfpresentDocumentPicker];
}
- (void)presentDocumentPicker {
NSArray*types =@[
@"public.data",
@"com.microsoft.powerpoint.ppt",
@"com.microsoft.word.doc",
@"com.microsoft.excel.xls",
@"com.microsoft.powerpoint.pptx",
@"com.microsoft.word.docx",
@"com.microsoft.excel.xlsx",
@"public.avi",
@"public.3gpp",
@"public.mpeg-4",
@"com.compuserve.gif",
@"public.jpeg",
@"public.png",
@"public.plain-text",
@"com.adobe.pdf"
];// 可以选择的文件类型
UIDocumentPickerViewController *documentPicker = [[UIDocumentPickerViewController alloc] initWithDocumentTypes:types inMode:UIDocumentPickerModeImport];
documentPicker.delegate=self;
documentPicker.modalPresentationStyle = UIModalPresentationFullScreen;
[selfpresentViewController:documentPicker animated:YEScompletion:nil];
}
- (void)documentPicker:(UIDocumentPickerViewController*)controller didPickDocumentsAtURLs:(nonnullNSArray *)urls {
for(NSURL*urlinurls) {
NSURL *tempURL = [NSURL fileURLWithPath:NSTemporaryDirectory()];
NSData *fileData = [NSData dataWithContentsOfURL:url];
NSFileManager *fileManager = [NSFileManager defaultManager];
NSString *filePath = [tempURL.path stringByAppendingPathComponent:url.lastPathComponent];
// If file with same name exists remove it
if([fileManagerfileExistsAtPath:filePath]) {
NSError*error1 =nil;
[fileManagerremoveItemAtPath:filePatherror:&error1];
NSLog(@"error%@", error1);
}
BOOLsuccess = [fileDatawriteToFile:filePathatomically:YES];
if(success) {
NSLog(@"write file success");
}else{
NSLog(@"write file fail");
return;
}
NSData *file = [NSData dataWithContentsOfFile:filePath];;
NSLog(@"file:%@", file);
}
}
DocumentTypes可以看官方文档苹果官方文档地址
