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，**App Groups特性，添加App groups 格式是：“group.+bundle identifier”如图：
在宿主App的Appdelegate中获取分享数据
- (void)applicationDidBecomeActive:(UIApplication *)application {
//获取共享的UserDefaults 注意黄色字体与ImageShare的App groups匹配
NSUserDefaults *userDefaults = [[NSUserDefaults alloc] initWithSuiteName:@"group.com.Micteach.Parents.ImageShare"];
if ([userDefaults boolForKey:@"newshare"]){
NSArray *array = [[userDefaults objectForKey:@"shareImageArr"] componentsSeparatedByString:@",”];
NSMutableArray *imagesDataArr = [NSMutableArray array];
/// 取出图片data
for (NSString *key in array) {
NSData *data = [userDefaults objectForKey:key];
[imagesDataArr addObject:data];
}
//重置分享标识
[userDefaults setBool:NO forKey:@"newshare"];
}
}
imagesDataArr便是获取到的图片的数组，，具体接下来是将图片进行发送还是上传服务器等操作，，按照自己的逻辑来操作。。。。。。。。。。。。。。。。