将App添加到系统分享列表（相册和截屏）

最新推荐文章于 2024-11-23 09:00:00 发布

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#share extension #相册图片分享添加自己的App

本文介绍了如何在iOS应用中创建并集成Share Extension，以实现从系统相册和截屏中选择图片进行分享的功能。详细步骤包括创建Share Extension Target、配置Info.plist、自定义Controller，并展示了如何在宿主App中获取分享的图片数据。

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系统相册点击分享拉起客户端获取图片发送或上传

2.1 创建Share Extension扩展Target

1、file—>new——>target

2、iOS—> Application Extension—>Share Extension，点击Next

3、给扩展起个名字，点击“Finish”

4.这时候会提示创建一个Scheme，点击“Activate”

创建Share Extension完成。编译运行。XCode中会弹出界面让我们选择一个iOS的App来运行Extension(真机有图片)。如图：

然后点击“Run”来进行调试运行启动系统照片，如图：

如果不想使用模板提供的storyboard文件，打开share的info.plist 移除NSExtensionMainStoryboard 键值对，并添加NSExtensionPrincipalClass键值对，使用自己创建的Controller的名字作为值

NSExtensionActivationSupportsImageWithMaxCount（数字6是规定最多可以选择6张图片）

myShareViewController 中的代码

- (void)viewDidLoad {

[super viewDidLoad];

self.imagesArr = [NSMutableArray array];

self.ImagesStr = nil;

self.view.backgroundColor = [UIColor colorWithRed:0.00 green:0.00 blue:0.00 alpha:0.50];

self.bacView = [[UIView alloc] initWithFrame:CGRectMake(30, [UIScreen mainScreen].bounds.size.height/2-200, [UIScreen mainScreen].bounds.size.width-60, 400)];

self.bacView.layer.cornerRadius = 5;

self.bacView.layer.masksToBounds = YES;

self.bacView.backgroundColor = [UIColor whiteColor];

[self.view addSubview:self.bacView];

///

self.nanView = [[UIView alloc] initWithFrame:CGRectMake(0, 64, [UIScreen mainScreen].bounds.size.width-60, 0.5)];

self.nanView.backgroundColor = [UIColor lightGrayColor];

[self.bacView addSubview:self.nanView];

///

self.cancelButton = [UIButton buttonWithType:UIButtonTypeSystem];

[self.cancelButton setTitle:@"取消" forState:UIControlStateNormal];

self.cancelButton.tintColor = [UIColor orangeColor];

self.cancelButton.frame = CGRectMake(10, 22, 50, 20);

[self.bacView addSubview:self.cancelButton];

[self.cancelButton addTarget:self action:@selector(cancelButtonAction) forControlEvents:UIControlEventTouchUpInside];

///

self.postButton = [UIButton buttonWithType:UIButtonTypeSystem];

[self.postButton setTitle:@"发送" forState:UIControlStateNormal];

self.postButton.tintColor = [UIColor orangeColor];

self.postButton.frame = CGRectMake(self.bacView.frame.size.width-60, 22, 50, 20);

[self.bacView addSubview:self.postButton];

[self.postButton addTarget:self action:@selector(postButtonAction) forControlEvents:UIControlEventTouchUpInside];

dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{

// 耗时的操作获取选中的图片的image

for (NSExtensionItem *item in self.extensionContext.inputItems) {

NSInteger count = item.attachments.count;

for (NSItemProvider *itemProvider in item.attachments) {

if ([itemProvider hasItemConformingToTypeIdentifier:@"public.image"]) {

[itemProvider loadItemForTypeIdentifier:@"public.image" options:nil completionHandler:^(UIImage *image, NSError *error) {

[self.imagesArr addObject:image];

dispatch_async(dispatch_get_main_queue(), ^{

if (self.imagesArr.count == count) {

[self createScrollView];

}

});

}];

}

});

}

/// 数组转成”,"间隔的字符串方便存取

-(NSString *)stringTOjson:(NSMutableArray *)temps{

return [temps componentsJoinedByString:@","];

}

- (void)createScrollView{

self.bigImageScroll = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 64, self.bacView.frame.size.width, 400-64)];

self.bigImageScroll.pagingEnabled = YES;

[self.bacView addSubview:self.bigImageScroll];

self.bigImageScroll.backgroundColor = [UIColor whiteColor];

self.bigImageScroll.contentSize = CGSizeMake(self.imagesArr.count*self.bacView.frame.size.width, 0);

for (NSInteger i = 0; i<self.imagesArr.count; i++) {

UIImageView *image = [[UIImageView alloc] initWithFrame:CGRectMake(i*self.bacView.frame.size.width, 0, self.bacView.frame.size.width, 400-64)];

[image setContentScaleFactor:[[UIScreen mainScreen] scale]];

image.contentMode = UIViewContentModeScaleAspectFit;

image.clipsToBounds = YES;

[self.bigImageScroll addSubview:image];

image.backgroundColor = [UIColor whiteColor];

image.image = self.imagesArr[i];

}

NSUserDefaults *userDefaults = [[NSUserDefaults alloc] initWithSuiteName:@"group.com.Micteach.Parents.ImageShare"];

////imageKeyArr 存储图片data的key数组

NSMutableArray *imageKeyArr = [NSMutableArray array];

for (UIImage *image in self.imagesArr) {

//UIImage转换为NSData

NSData *imageData = UIImagePNGRepresentation(image);

NSString *key = [self ret32bitString];

[userDefaults setObject:imageData forKey:key];

[imageKeyArr addObject:key];

}

[userDefaults setObject:[self stringTOjson:imageKeyArr] forKey:@"shareImageArr"];

//用于标记是新的分享

[userDefaults setBool:YES forKey:@"newshare"];

}

/// 32位随机字符串

- (NSString *)ret32bitString{

char data[32];

for (int x=0;x<32;data[x++] = (char)('A' + (arc4random_uniform(26))));

return [[NSString alloc] initWithBytes:data length:32 encoding:NSUTF8StringEncoding];

}

- (void)cancelButtonAction{

[self.extensionContext cancelRequestWithError:[NSError errorWithDomain:@"CustomShareError" code:NSUserCancelledError userInfo:nil]];

}

- (void)postButtonAction{

//执行分享内容处理拉起寄主App(customURL是怎么来的？调研openUrl)

NSString *customURL = @"cloudschool://";

UIResponder* responder = self;

while ((responder = [responder nextResponder]) != nil){

if([responder respondsToSelector:@selector(openURL:)] == YES){

[responder performSelector:@selector(openURL:) withObject:[NSURL URLWithString:customURL]];

[self.extensionContext completeRequestReturningItems:nil completionHandler:NULL];

}

到这里可以拉起宿主App

下面是如何在宿主App中获取图片的存储数组

使用App Groups服务，使自己的应用之间通过NSUserDefaults进行相互的数据传输

到开发者中心为创建的ImageShare工程添加App ID ，，打开ImageShare工程和宿主工程的App services的App groups 功能（由于我的工程使用的automatically manage signing 所以未到开发者中心创建App ID，直接在工程开启App Groups后自动生成的，对于不是automatically manage signing具体的过程自己研究一下吧）

然后分别打开容器应用和分享应用的项目配置的Capabilities页签，激活App Groups特性，添加App groups 格式是：“group.+bundle identifier”如图：