将iOS 8文档保存到iCloud Drive [英] Save iOS 8 Documents to iCloud Drive
问题描述
我想让我的应用将其创建的文档保存到iCloud Drive，但我很难跟上Apple写的内容。这是我到目前为止所做的，但我不确定从哪里开始。
I want to have my app save the documents it creates to iCloud Drive, but I am having a hard time following along with what Apple has written. Here is what I have so far, but I'm not for sure where to go from here.
UPDATE2
我的代码中有以下内容将文档手动保存到iCloud Drive：
I have the following in my code to manually save a document to iCloud Drive:
- (void)initializeiCloudAccessWithCompletion:(void (^)(BOOL available)) completion {
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
self.ubiquityURL = [[NSFileManager defaultManager] URLForUbiquityContainerIdentifier:nil];
if (self.ubiquityURL != nil) {
dispatch_async(dispatch_get_main_queue(), ^{
NSLog(@"iCloud available at: %@", self.ubiquityURL);
completion(TRUE);
});
}
else {
dispatch_async(dispatch_get_main_queue(), ^{
NSLog(@"iCloud not available");
completion(FALSE);
});
}
});
}
if (buttonIndex == 4) {
[self initializeiCloudAccessWithCompletion:^(BOOL available) {
_iCloudAvailable = available;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *pdfPath = [documentsDirectory stringByAppendingPathComponent:selectedCountry];
NSURL* url = [NSURL fileURLWithPath: pdfPath];
[self.manager setUbiquitous:YES itemAtURL:url destinationURL:self.ubiquityURL error:nil];
}];
}
我已为App ID设置了权利Xcode本身。我点击按钮保存到iCloud Drive，没有错误弹出，应用程序没有崩溃，但在iCloud Drive中我的Mac上没有显示任何内容。使用iOS 8.1.1时，应用程序通过Test Flight在我的iPhone 6 Plus上运行。
I have the entitlements set up for the App ID and in Xcode itself. I click the button to save to iCloud Drive, and no errors pop up, the app doesn't crash, but nothing shows up on my Mac in iCloud Drive. The app is running on my iPhone 6 Plus via Test Flight while using iOS 8.1.1.
如果我在模拟器上运行它（我知道它将无法正常运行到iCloud Drive无法使用模拟器），我收到崩溃错误：'NSInvalidArgumentException'，原因：'*** - [__ NSPlaceholderDictionary initWithObjects：forKeys：count：]：尝试从对象插入nil对象[ 3]'
If I run it on Simulator (I know that it won't work due to iCloud Drive not working with simulator), I get the crash error: 'NSInvalidArgumentException', reason: '*** -[__NSPlaceholderDictionary initWithObjects:forKeys:count:]: attempt to insert nil object from objects[3]'
推荐答案
嗯，你让我对这件事感兴趣并且作为一个结果我花了很多时间在这个问题上，但现在我已经有了它的工作，我希望它也能帮到你！
Well, you've got me interested in this matter myself and as a result I've spent way to much time on this question, but now that I've got it working I hope it helps you as well!
要查看后台实际发生的情况，可以查看〜/ Library / Mobile Documents / ，因为这是文件最终会显示的文件夹。另一个非常酷的实用工具是 brctl ，用于监控在iCloud中存储文件后Mac上发生的情况。从终端窗口运行 brctl log --wait --shorten 以启动日志。
To see what actually happens in the background, you can have a look at ~/Library/Mobile Documents/, as this is the folder where the files eventually will show up. Another very cool utility is brctl, to monitor what happens on your mac after storing a file in the iCloud. Run brctl log --wait --shorten from a Terminal window to start the log.
要做的第一件事启用iCloud功能（选择iCloud文档）后，为iCloud Drive Support提供信息（启用iCloud Drive支持）。 在再次运行应用之前，我还必须提高我的捆绑版本;我花了一些时间来解决这个问题。 将以下内容添加到您的 info.plist ：
First thing to do, after enabling the iCloud ability (with iCloud documents selected), is provide information for iCloud Drive Support (Enabling iCloud Drive Support). I also had to bump my bundle version before running the app again; took me some time to figure this out. Add the following to your info.plist:
<key>NSUbiquitousContainers</key>
<dict>
<key>iCloud.YOUR_BUNDLE_IDENTIFIER</key>
<dict>
<key>NSUbiquitousContainerIsDocumentScopePublic</key>
<true/>
<key>NSUbiquitousContainerSupportedFolderLevels</key>
<string>Any</string>
<key>NSUbiquitousContainerName</key>
<string>iCloudDriveDemo</string>
</dict>
</dict>
接下来，代码：
- (IBAction)btnStoreTapped:(id)sender {
// Let's get the root directory for storing the file on iCloud Drive
[self rootDirectoryForICloud:^(NSURL *ubiquityURL) {
NSLog(@"1. ubiquityURL = %@", ubiquityURL);
if (ubiquityURL) {
// We also need the 'local' URL to the file we want to store
NSURL *localURL = [self localPathForResource:@"demo" ofType:@"pdf"];
NSLog(@"2. localURL = %@", localURL);
// Now, append the local filename to the ubiquityURL
ubiquityURL = [ubiquityURL URLByAppendingPathComponent:localURL.lastPathComponent];
NSLog(@"3. ubiquityURL = %@", ubiquityURL);
// And finish up the 'store' action
NSError *error;
if (![[NSFileManager defaultManager] setUbiquitous:YES itemAtURL:localURL destinationURL:ubiquityURL error:&error]) {
NSLog(@"Error occurred: %@", error);
}
}
else {
NSLog(@"Could not retrieve a ubiquityURL");
}
}];
}
- (void)rootDirectoryForICloud:(void (^)(NSURL *))completionHandler {
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
NSURL *rootDirectory = [[[NSFileManager defaultManager] URLForUbiquityContainerIdentifier:nil]URLByAppendingPathComponent:@"Documents"];
if (rootDirectory) {
if (![[NSFileManager defaultManager] fileExistsAtPath:rootDirectory.path isDirectory:nil]) {
NSLog(@"Create directory");
[[NSFileManager defaultManager] createDirectoryAtURL:rootDirectory withIntermediateDirectories:YES attributes:nil error:nil];
}
}
dispatch_async(dispatch_get_main_queue(), ^{
completionHandler(rootDirectory);
});
});
}
- (NSURL *)localPathForResource:(NSString *)resource ofType:(NSString *)type {
NSString *documentsDirectory = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0];
NSString *resourcePath = [[documentsDirectory stringByAppendingPathComponent:resource] stringByAppendingPathExtension:type];
return [NSURL fileURLWithPath:resourcePath];
}
我有一个名为 demo.pdf的文件存储在Documents文件夹中，我将上传。
I have a file called demo.pdf stored in the Documents folder, which I'll be 'uploading'.
我将重点介绍部分内容：
I'll highlight some parts:
URLForUbiquityContainerIdentifier：提供用于存储文件的根目录，如果您希望它们显示在Mac上的de iCloud Drive中，那么您需要将它们存储在Documents文件夹中，所以在这里我们将该文件夹添加到根目录：
URLForUbiquityContainerIdentifier: provides the root directory for storing files, if you want to them to show up in de iCloud Drive on your Mac, then you need to store them in the Documents folder, so here we add that folder to the root:
NSURL *rootDirectory = [[[NSFileManager defaultManager] URLForUbiquityContainerIdentifier:nil]URLByAppendingPathComponent:@"Documents"];
您还需要将文件名添加到URL，这里我从localURL复制文件名（这是demo.pdf）：
You also need to add the file name to the URL, here I copy the filename from the localURL (which is demo.pdf):
// Now, append the local filename to the ubiquityURL
ubiquityURL = [ubiquityURL URLByAppendingPathComponent:localURL.lastPathComponent];
这基本上就是......
And that's basically it...
作为奖励，请查看如何提供 NSError 指针以获取潜在的错误信息：
As a bonus, check out how you can provide an NSError pointer to get potential error information:
// And finish up the 'store' action
NSError *error;
if (![[NSFileManager defaultManager] setUbiquitous:YES itemAtURL:localURL destinationURL:ubiquityURL error:&error]) {
NSLog(@"Error occurred: %@", error);
}
这篇关于将iOS 8文档保存到iCloud Drive的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
