用于在共享扩展和iOS应用之间共享文件路径/文件的代码 [英] Code to share file path/file between a share extension and iOS app
本文介绍了用于在共享扩展和iOS应用之间共享文件路径/文件的代码的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我为我的应用添加了一个共享扩展名，例如SAMPLE（已存在于应用商店中），名为SAMPLESHARE。每当用户说出拍照并试图分享它时，我希望他们通过Open In功能的视图控制器，而不是从Apple获得Post对话，基本上绕过它。因此，我尝试在共享扩展程序和我的应用程序之间共享图片，方法是创建一个在应用程序和插件之间共享的应用程序组，然后将文件路径传递给我的应用程序的应用程序委托的openURL。
I have added a share extension for my app say SAMPLE (already exists on the app store), called lets say SAMPLESHARE. Whenever a user, say takes a picture and tries to share it, I want them to go through a view controller of an Open In functionality, and not get the Post dialogue from Apple, basically bypassing it. So I am trying to share the picture between the share extension and my app, by creating an app group that is shared between the app and plugin and then passing the file paths to the openURL of the application delegate of my app.
所以在我的主应用程序委托中我有
So in my main application delegate I have
- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation
{
return [[SAMPLEExternalFileHandler shared] handleExternalFileURL:url];
}
如果我有一个需要的URL文件路径，我基本上每次都会用它来检查打开一个不同的流程。
which basically I use for checking everytime if I have a URL file path that needs to open a different flow.
在我的SHAREEXTENSION中我有
In my SHAREEXTENSION I have
#import "ShareViewController.h"
#import <MobileCoreServices/UTCoreTypes.h>
//Macro to hide post dialog or not, if defined, will be hidden, comment during debugging
#define HIDE_POST_DIALOG
@interface ShareViewController ()
@end
@implementation ShareViewController
NSUInteger m_inputItemCount = 0; // Keeps track of the number of attachments we have opened asynchronously.
NSString * m_invokeArgs = NULL; // A string to be passed to your AIR app with information about the attachments.
NSString * APP_SHARE_GROUP = @"group.com.SAMPLE.SAMPLESHAREPLUGIN";
const NSString * APP_SHARE_URL_SCHEME = @"SAMPLE";
CGFloat m_oldAlpha = 1.0; // Keeps the original transparency of the Post dialog for when we want to hide it.
- (BOOL)isContentValid {
// Do validation of contentText and/or NSExtensionContext attachments here
return YES;
}
- ( void ) didSelectPost
{
#ifdef HIDE_POST_DIALOG
return;
#endif
[ self passSelectedItemsToApp ];
// Note: This call is expected to be made here. Ignore it. We'll tell the host we are done after we've invoked the app.
// [ self.extensionContext completeRequestReturningItems: @[] completionHandler: nil ];
}
- ( void ) addImagePathToArgumentList: ( NSString * ) imagePath
{
assert( NULL != imagePath );
// The list of arguments we will pass to the AIR app when we invoke it.
// It will be a comma-separated list of file paths: /path/to/image1.jpg,/path/to/image2.jpg
if ( NULL == m_invokeArgs )
{
m_invokeArgs = imagePath;
}
else
{
m_invokeArgs = [ NSString stringWithFormat: @"%@,%@", m_invokeArgs, imagePath ];
}
}
- ( NSString * ) saveImageToAppGroupFolder: ( UIImage * ) image
imageIndex: ( int ) imageIndex
{
assert( NULL != image );
NSData * jpegData = UIImageJPEGRepresentation( image, 1.0 );
NSURL * containerURL = [ [ NSFileManager defaultManager] containerURLForSecurityApplicationGroupIdentifier: APP_SHARE_GROUP ];
NSString * documentsPath = containerURL.path;
// Note that we aren't using massively unique names for the files in this example:
NSString * fileName = [ NSString stringWithFormat: @"image%d.jpg", imageIndex ];
NSString * filePath = [ documentsPath stringByAppendingPathComponent: fileName ];
[ jpegData writeToFile: filePath atomically: YES ];
return filePath;
}
- ( void ) passSelectedItemsToApp
{
NSExtensionItem * item = self.extensionContext.inputItems.firstObject;
// Reset the counter and the argument list for invoking the app:
m_invokeArgs = NULL;
m_inputItemCount = item.attachments.count;
// Iterate through the attached files
for ( NSItemProvider * itemProvider in item.attachments )
{
// Check if we are sharing a JPEG
if ( [ itemProvider hasItemConformingToTypeIdentifier: ( NSString * ) kUTTypeImage ] )
{
// Load it, so we can get the path to it
[ itemProvider loadItemForTypeIdentifier: ( NSString * ) kUTTypeImage
options: NULL
completionHandler: ^ ( UIImage * image, NSError * error )
{
static int itemIdx = 0;
if ( NULL != error )
{
NSLog( @"There was an error retrieving the attachments: %@", error );
return;
}
// The app won't be able to access the images by path directly in the Camera Roll folder,
// so we temporary copy them to a folder which both the extension and the app can access:
NSString * filePath = [ self saveImageToAppGroupFolder: image imageIndex: itemIdx ];
// Now add the path to the list of arguments we'll pass to the app:
[ self addImagePathToArgumentList: filePath ];
// If we have reached the last attachment, it's time to hand control to the app:
if ( ++itemIdx >= m_inputItemCount )
{
[ self invokeApp: m_invokeArgs ];
}
} ];
}
}
}
- ( void ) invokeApp: ( NSString * ) invokeArgs
{
// Prepare the URL request
// this will use the custom url scheme of your app
// and the paths to the photos you want to share:
NSString * urlString = [ NSString stringWithFormat: @"%@://%@", APP_SHARE_URL_SCHEME, ( NULL == invokeArgs ? @"" : invokeArgs ) ];
NSURL * url = [ NSURL URLWithString: urlString ];
NSString *className = @"UIApplication";
if ( NSClassFromString( className ) )
{
id object = [ NSClassFromString( className ) performSelector: @selector( sharedApplication ) ];
[ object performSelector: @selector( openURL: ) withObject: url ];
}
// Now let the host app know we are done, so that it unblocks its UI:
[ super didSelectPost ];
}
#ifdef HIDE_POST_DIALOG
- ( NSArray * ) configurationItems
{
// Comment out this whole function if you want the Post dialog to show.
[ self passSelectedItemsToApp ];
// To add configuration options via table cells at the bottom of the sheet, return an array of SLComposeSheetConfigurationItem here.
return @[];
}
#endif
#ifdef HIDE_POST_DIALOG
- ( void ) willMoveToParentViewController: ( UIViewController * ) parent
{
// This is called at the point where the Post dialog is about to be shown.
// Make it transparent, so we don't see it, but first remember how transparent it was originally:
m_oldAlpha = [ self.view alpha ];
[ self.view setAlpha: 0.0 ];
}
#endif
#ifdef HIDE_POST_DIALOG
- ( void ) didMoveToParentViewController: ( UIViewController * ) parent
{
// Restore the original transparency:
[ self.view setAlpha: m_oldAlpha ];
}
#endif
#ifdef HIDE_POST_DIALOG
- ( id ) init
{
if ( self = [ super init ] )
{
// Subscribe to the notification which will tell us when the keyboard is about to pop up:
[ [ NSNotificationCenter defaultCenter ] addObserver: self selector: @selector( keyboardWillShow: ) name: UIKeyboardWillShowNotification object: nil ];
}
return self;
}
#endif
#ifdef HIDE_POST_DIALOG
- ( void ) keyboardWillShow: ( NSNotification * ) note
{
// Dismiss the keyboard before it has had a chance to show up:
[ self.view endEditing: true ];
}
#endif
@end
以及我的信息。延期的plist是
And my info.plist for the extension is
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>CFBundleDevelopmentRegion</key>
<string>en</string>
<key>CFBundleDisplayName</key>
<string>SAMPLESHARE</string>
<key>CFBundleExecutable</key>
<string>$(EXECUTABLE_NAME)</string>
<key>CFBundleIdentifier</key>
<string>com.org.SAMPLE.$(PRODUCT_NAME:rfc1034identifier)</string>
<key>CFBundleInfoDictionaryVersion</key>
<string>6.0</string>
<key>CFBundleName</key>
<string>$(PRODUCT_NAME)</string>
<key>CFBundlePackageType</key>
<string>XPC!</string>
<key>CFBundleShortVersionString</key>
<string>1.0</string>
<key>CFBundleSignature</key>
<string>????</string>
<key>CFBundleVersion</key>
<string>1</string>
<key>NSExtension</key>
<dict>
<key>NSExtensionAttributes</key>
<dict>
<key>NSExtensionActivationRule</key>
<dict>
<key>NSExtensionActivationSupportsImageWithMaxCount</key>
<integer>1</integer>
</dict>
</dict>
<key>NSExtensionMainStoryboard</key>
<string>MainInterface</string>
<key>NSExtensionPointIdentifier</key>
<string>com.apple.share-services</string>
</dict>
</dict>
</plist>
我基本上使用了互联网（知名网站）的一些公共许可证代码，声称已通过应用商店审核流程。
I have basically used some commons license code off the internet(reputed site), which claims to have passed the app store review process.
代码中有两种解决方法，一种是从共享扩展中调用OpenURL（从淘汰中看起来似乎仍然不可能在iOS 8.3上没有解决方法以及第二种方法是隐藏任何人点击共享时默认情况下苹果提供的帖子对话框和键盘。
这很有效。
There are two workarounds in the code, one is to call the OpenURL from the share extension(which from scouring SO seems like is still not possible normally without workarounds on iOS 8.3 and above) and the second is to hide the post dialogue and the keyboard that apple provides by default when anyone clicks on share. This works.
我有两个问题
1.) Will this be accepted on the app store? -- basically how are apps like facebook/whatsapp doing it and they are being accepted?
2.) Whenever I run this, it says `NSExtensionActivationRule` if set to `TRUEPREDICATE` will be rejected in review, what should the value be?
更新：
通过文档搜索我找到了问题2的修复，并改变了这一点。现在一切正常，并且没有 TRUEPREDICATE ，这将在商店接受还是有其他方法可以做到这一点？
So scouring through the documentation I have found a fix for question 2, and changed this. Now everything works, and there is no TRUEPREDICATE, will this be accepted on the store or is there another way to do this?
更新2：
我现在使用 NSUserDefaults 将数据从扩展程序传递到应用程序，猜测这也是共享数据的一项要求。
I have now used NSUserDefaults to pass the data from the extension to the app, guess that is also one requirement for sharing data.
推荐答案
更新
使用 NSUSERDEFAULTS 作为评价接受该应用消息传递机制。这是步骤。
The app was accepted in the review using NSUSERDEFAULTS as the message passing mechanism. Here are the steps.
1。）分享扩展名：
#import "ShareViewController.h"
#import <MobileCoreServices/UTCoreTypes.h>
//Macro to hide post dialog or not, if defined, will be hidden, comment during debugging
#define HIDE_POST_DIALOG
@interface ShareViewController ()
@end
@implementation ShareViewController
NSUInteger m_inputItemCount = 0; // Keeps track of the number of attachments we have opened asynchronously.
NSString * m_invokeArgs = NULL; // A string to be passed to your AIR app with information about the attachments.
NSString * APP_SHARE_GROUP = @"group.com.schemename.nameofyourshareappgroup";
const NSString * APP_SHARE_URL_SCHEME = @"schemename";
CGFloat m_oldAlpha = 1.0; // Keeps the original transparency of the Post dialog for when we want to hide it.
- (BOOL)isContentValid {
// Do validation of contentText and/or NSExtensionContext attachments here
return YES;
}
- ( void ) didSelectPost
{
#ifdef HIDE_POST_DIALOG
return;
#endif
[ self passSelectedItemsToApp ];
// Note: This call is expected to be made here. Ignore it. We'll tell the host we are done after we've invoked the app.
// [ self.extensionContext completeRequestReturningItems: @[] completionHandler: nil ];
}
- ( void ) addImagePathToArgumentList: ( NSString * ) imagePath
{
assert( NULL != imagePath );
// The list of arguments we will pass to the AIR app when we invoke it.
// It will be a comma-separated list of file paths: /path/to/image1.jpg,/path/to/image2.jpg
if ( NULL == m_invokeArgs )
{
m_invokeArgs = imagePath;
}
else
{
m_invokeArgs = [ NSString stringWithFormat: @"%@,%@", m_invokeArgs, imagePath ];
}
}
- ( NSString * ) saveImageToAppGroupFolder: ( UIImage * ) image
imageIndex: ( int ) imageIndex
{
assert( NULL != image );
NSData * jpegData = UIImageJPEGRepresentation( image, 1.0 );
NSURL * containerURL = [ [ NSFileManager defaultManager] containerURLForSecurityApplicationGroupIdentifier: APP_SHARE_GROUP ];
NSString * documentsPath = containerURL.path;
// Note that we aren't using massively unique names for the files in this example:
NSString * fileName = [ NSString stringWithFormat: @"image%d.jpg", imageIndex ];
NSString * filePath = [ documentsPath stringByAppendingPathComponent: fileName ];
[ jpegData writeToFile: filePath atomically: YES ];
//Mahantesh -- Store image url to NSUserDefaults
NSUserDefaults *defaults=[[NSUserDefaults alloc] initWithSuiteName:@"group.com.schemename.nameofyourshareappgroup"];
[defaults setObject:filePath forKey:@"url"];
[defaults synchronize];
return filePath;
}
- ( void ) passSelectedItemsToApp
{
NSExtensionItem * item = self.extensionContext.inputItems.firstObject;
// Reset the counter and the argument list for invoking the app:
m_invokeArgs = NULL;
m_inputItemCount = item.attachments.count;
// Iterate through the attached files
for ( NSItemProvider * itemProvider in item.attachments )
{
// Check if we are sharing a Image
if ( [ itemProvider hasItemConformingToTypeIdentifier: ( NSString * ) kUTTypeImage ] )
{
// Load it, so we can get the path to it
[ itemProvider loadItemForTypeIdentifier: ( NSString * ) kUTTypeImage
options: NULL
completionHandler: ^ ( UIImage * image, NSError * error )
{
static int itemIdx = 0;
if ( NULL != error )
{
NSLog( @"There was an error retrieving the attachments: %@", error );
return;
}
// The app won't be able to access the images by path directly in the Camera Roll folder,
// so we temporary copy them to a folder which both the extension and the app can access:
NSString * filePath = [ self saveImageToAppGroupFolder: image imageIndex: itemIdx ];
// Now add the path to the list of arguments we'll pass to the app:
[ self addImagePathToArgumentList: filePath ];
// If we have reached the last attachment, it's time to hand control to the app:
if ( ++itemIdx >= m_inputItemCount )
{
[ self invokeApp: m_invokeArgs ];
}
} ];
}
}
}
- ( void ) invokeApp: ( NSString * ) invokeArgs
{
// Prepare the URL request
// this will use the custom url scheme of your app
// and the paths to the photos you want to share:
NSString * urlString = [ NSString stringWithFormat: @"%@://%@", APP_SHARE_URL_SCHEME, ( NULL == invokeArgs ? @"" : invokeArgs ) ];
NSURL * url = [ NSURL URLWithString: urlString ];
NSString *className = @"UIApplication";
if ( NSClassFromString( className ) )
{
id object = [ NSClassFromString( className ) performSelector: @selector( sharedApplication ) ];
[ object performSelector: @selector( openURL: ) withObject: url ];
}
// Now let the host app know we are done, so that it unblocks its UI:
[ super didSelectPost ];
}
#ifdef HIDE_POST_DIALOG
- ( NSArray * ) configurationItems
{
// Comment out this whole function if you want the Post dialog to show.
[ self passSelectedItemsToApp ];
// To add configuration options via table cells at the bottom of the sheet, return an array of SLComposeSheetConfigurationItem here.
return @[];
}
#endif
#ifdef HIDE_POST_DIALOG
- ( void ) willMoveToParentViewController: ( UIViewController * ) parent
{
// This is called at the point where the Post dialog is about to be shown.
// Make it transparent, so we don't see it, but first remember how transparent it was originally:
m_oldAlpha = [ self.view alpha ];
[ self.view setAlpha: 0.0 ];
}
#endif
#ifdef HIDE_POST_DIALOG
- ( void ) didMoveToParentViewController: ( UIViewController * ) parent
{
// Restore the original transparency:
[ self.view setAlpha: m_oldAlpha ];
}
#endif
#ifdef HIDE_POST_DIALOG
- ( id ) init
{
if ( self = [ super init ] )
{
// Subscribe to the notification which will tell us when the keyboard is about to pop up:
[ [ NSNotificationCenter defaultCenter ] addObserver: self selector: @selector( keyboardWillShow: ) name: UIKeyboardWillShowNotification object: nil ];
}
return self;
}
#endif
#ifdef HIDE_POST_DIALOG
- ( void ) keyboardWillShow: ( NSNotification * ) note
{
// Dismiss the keyboard before it has had a chance to show up:
[ self.view endEditing: true ];
}
#endif
@end
-
在应用程序委托的openURL方法中
In the openURL method of your application delegate
//Slartibartfast -- For the case where we are opening app from an extension
NSString *STATIC_FILE_HANDLE = @"file://";
//If app is opened from share extension, do the following
/*
1.) Get path of shared file from NSUserDefaults
2.) Get data from file and store in some variable
3.) Create a new accesible unique file path
4.) Dump data created into this file.
*/
NSUserDefaults *defaults=[[NSUserDefaults alloc] initWithSuiteName:YOURAPP_STATIC_APP_GROUP_NAME];
NSString *path=nil;
if(defaults)
{
[defaults synchronize];
path = [defaults stringForKey:@"url"];
}
if(path.length != 0)
{
NSData *data;
//Get file path from url shared
NSString * newFilePathConverted = [STATIC_FILE_HANDLE stringByAppendingString:path];
url = [ NSURL URLWithString: newFilePathConverted ];
data = [NSData dataWithContentsOfURL:url];
//Create a regular access path because this app cant preview a shared app group path
NSString *regularAccessPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString *uuid = [[NSUUID UUID] UUIDString];
//Copy file to a jpg image(ignore extension, will convert from png)
NSString *uniqueFilePath= [ NSString stringWithFormat: @"/image%@.jpg", uuid];
regularAccessPath = [regularAccessPath stringByAppendingString:uniqueFilePath];
NSString * newFilePathConverted1 = [STATIC_FILE_HANDLE stringByAppendingString:regularAccessPath];
url = [ NSURL URLWithString: newFilePathConverted1 ];
//Dump existing shared file path data into newly created file.
[data writeToURL:url atomically:YES];
//Reset NSUserDefaults to Nil once file is copied.
[defaults setObject:nil forKey:@"url"];
}
//Do what you want
}
感谢 EasyNativeExtensions 指针
这篇关于用于在共享扩展和iOS应用之间共享文件路径/文件的代码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！
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