玩转iOS开发：iOS 8新特性《Share Extension》

作者感言

Share Extension

简介

Share Extension

Share Extension

Safari

iCon

Share Extension

Safari

Share Extension

创建新工程

Share Extension

ShareExtensionDemo

创建ShareExtension

Share Extension

Today Extension

配置主应用

Share Extension

Share Extension

StoryBoard

UIButton

StoryBoard

Share

Action

ViewController

- (IBAction)ShareAction:(UIButton *)sender {

NSString *string = @"您好";

UIActivityViewController *activityController = [[UIActivityViewController alloc] initWithActivityItems:@[string]
applicationActivities:nil];

[self presentViewController:activityController
animated:YES
completion:nil];
}

Share Extension

配置ShareExtension

Share Extension

// 如果是return No, 那么发送按钮就无法点击, 如果return YES, 那么发送按钮就可以点击
- (BOOL)isContentValid {
// Do validation of contentText and/or NSExtensionContext attachments here
return YES;
}

// 发送按钮的Action事件
- (void)didSelectPost {
// This is called after the user selects Post. Do the upload of contentText and/or NSExtensionContext attachments.

// Inform the host that we're done, so it un-blocks its UI. Note: Alternatively you could call super's -didSelectPost, which will similarly complete the extension context.
[self.extensionContext completeRequestReturningItems:@[] completionHandler:nil];
}

// 这个方法是用来返回items的一个方法, 而且返回值是数组
- (NSArray *)configurationItems {
// To add configuration options via table cells at the bottom of the sheet, return an array of SLComposeSheetConfigurationItem here.
return @[];
}

配置NSExtension

ShareExtension逻辑

填写限制字数长度的逻辑

Share Extension

// 限制字数, 最多只能输入40个
static NSInteger const maxCharactersAllowed = 40;
// 这是一个测试连接, 并不是固定的, 你可以去http://requestb.in申请, 然后替换到你最新申请的连接即可
static NSString *uploadURL = @"http://requestb.in/1hx20w61";

- (BOOL)isContentValid

- (BOOL)isContentValid {

NSInteger length = self.contentText.length;

self.charactersRemaining = @(maxCharactersAllowed - length);

return self.charactersRemaining.integerValue < 0 ? NO : YES;
}

填写上传信息的逻辑

Share Extension

NSURLRequest

/**
*  返回一个NSURLRequest方法, 需要传入一个NSString对象
*
*  @param string 需要发送出去的字符串
*
*  @return NSURLRequest
*/
- (NSURLRequest *)urlRequestWithString:(NSString *)string {

NSURL *url = [NSURL URLWithString:uploadURL];

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];

[request addValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
[request addValue:@"application/json" forHTTPHeaderField:@"Accept"];

request.HTTPMethod = @"POST";

NSMutableDictionary *jsonObject = [NSMutableDictionary dictionary];

jsonObject[@"text"] = string;

NSError *jsonError;
NSData *jsonData;

jsonData = [NSJSONSerialization dataWithJSONObject:jsonObject options:NSJSONWritingPrettyPrinted error:&jsonError];

if (jsonData) {

request.HTTPBody = jsonData;
} else {

NSLog(@"JSON Error: %@", jsonError.localizedDescription);
}

return request;
}

- (void)didSelectPost

- (void)didSelectPost {

NSString *configName = @"com.shareExtension.ShareExtensionDemo.BackgroundSessionConfig";

NSURLSessionConfiguration *sessionConfig = [NSURLSessionConfiguration backgroundSessionConfigurationWithIdentifier:configName];

sessionConfig.sharedContainerIdentifier = @"group.ShareExtension";

NSURLSession *session = [NSURLSession sessionWithConfiguration:sessionConfig];

NSURLRequest *urlRequest = [self urlRequestWithString:self.contentText];

NSURLSessionTask *task = [session dataTaskWithRequest:urlRequest];

[task resume];

[self.extensionContext completeRequestReturningItems:@[] completionHandler:nil];
}

URL

Share Extension

自定义UI

Share Extension

UIViewController

Google

补充篇文章

NSURLRequest

nil

GitHub地址