使用分享扩展在应用之间传递数据

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简单的研究了扩展，记录一下

1，创建一个分享扩展

File ----> New --- >Target 出现

在项目中就会出现

要传递数据的需要设置App Groups

在扩展中也设置同样的

调试扩展

在扩展中打开Container App

在扩展中设置跳转的代码

//  在扩展中打开 contaier app - (void)openApp {    NSString *destURLString = @"doubiDemo://";    UIResponder* responder = self;    while ((responder = [responder nextResponder]) != nil){        if([responder respondsToSelector:@selector(openURL:)] == YES){            [responder performSelector:@selector(openURL:) withObject:[NSURL URLWithString:destURLString]];            [self.extensionContext completeRequestReturningItems:nil completionHandler:NULL];        }    }}

我做的是从其他应用里面传文件过来，，例如从微信将ppt 传到我们的应用

我简单的理解是将微信中ppt 文件复制到扩展 ,我们的应用在从扩展中去取数据

我的示例代码

#import "ShareViewController.h"#import <MobileCoreServices/MobileCoreServices.h>@interface ShareViewController ()@end@implementation ShareViewController-(void)viewDidLoad{    [super viewDidLoad];      NSExtensionItem *extensionItem = [self.extensionContext.inputItems firstObject];        __weak __typeof(self) __weak_self = self;    BOOL isExit = YES;    for(NSItemProvider *itemProvider in [extensionItem attachments]) {        if ([itemProvider hasItemConformingToTypeIdentifier:(NSString *)kUTTypeFileURL]) {            isExit = NO;            [itemProvider loadItemForTypeIdentifier:(NSString *)kUTTypeFileURL options:nil completionHandler:^(id<NSSecureCoding>  _Nullable item, NSError * _Null_unspecified error) {                                NSURL *URL = (NSURL *)item;                if ([URL isFileURL] && [__weak_self copyResToAppGroup:URL])                    [__weak_self openApp ];                else                    [self.extensionContext completeRequestReturningItems:nil completionHandler:NULL];            }];        }    }    if (isExit) [self.extensionContext completeRequestReturningItems:nil completionHandler:NULL];}//  在扩展中打开 contaier app - (void)openApp {    NSString *destURLString = @"doubiDemo://";    UIResponder* responder = self;    while ((responder = [responder nextResponder]) != nil){        if([responder respondsToSelector:@selector(openURL:)] == YES){            [responder performSelector:@selector(openURL:) withObject:[NSURL URLWithString:destURLString]];            [self.extensionContext completeRequestReturningItems:nil completionHandler:NULL];        }    }}// 将文件复制到 app group- (BOOL) copyResToAppGroup:(NSURL *) sorURL{    NSError *error = nil;    NSFileManager *fileManager = [NSFileManager defaultManager];        NSURL *groupURL = [fileManager containerURLForSecurityApplicationGroupIdentifier:@"group.DoubiDemo"];    groupURL = [groupURL URLByAppendingPathComponent:@"upload"];        BOOL isDir = NO;    if (![fileManager fileExistsAtPath:groupURL.relativePath isDirectory:&isDir] && !isDir)        [fileManager createDirectoryAtURL:groupURL withIntermediateDirectories:YES attributes:nil error:&error];        NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];    [dateFormatter setDateFormat:@"yyyyMMddHHmmss"];    NSString *currentDateStr = [dateFormatter stringFromDate:[NSDate date]];    NSString *name = [[sorURL lastPathComponent] stringByDeletingPathExtension];    NSString *ext = [sorURL pathExtension];        groupURL = [groupURL URLByAppendingPathComponent:[NSString stringWithFormat:@"%@-%@.%@", name, currentDateStr, ext]];      return [fileManager copyItemAtURL:sorURL toURL:groupURL error:&error];}

注意：需要 #import <MobileCoreServices/MobileCoreServices.h>

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