{"id":179,"date":"2016-01-22T16:41:25","date_gmt":"2016-01-22T08:41:25","guid":{"rendered":"http:\/\/www.zhuyanbin.com\/?p=179"},"modified":"2016-12-09T22:11:32","modified_gmt":"2016-12-09T14:11:32","slug":"photokit-%e8%af%a6%e8%a7%a3%ef%bc%88%e4%b8%8a%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.yanbin888.com\/?p=179","title":{"rendered":"PhotoKit \u8be6\u89e3\uff08\u4e0a\uff09"},"content":{"rendered":"<h2>\u4e00. \u6982\u51b5<\/h2>\n<p>\u672c\u6587\u63a5\u7740\u00a0<a href=\"http:\/\/kayosite.com\/ios-development-and-detail-of-photo-framework.html\" target=\"_blank\">iOS \u5f00\u53d1\u4e4b\u7167\u7247\u6846\u67b6\u8be6\u89e3<\/a>\uff0c\u4fa7\u91cd\u4ecb\u7ecd\u5728\u524d\u6587\u4e2d\u7b80\u5355\u4ecb\u7ecd\u8fc7\u7684 PhotoKit \u53ca\u5176\u4e0e ALAssetLibrary \u7684\u5dee\u5f02\uff0c\u4ee5\u53ca\u5982\u4f55\u57fa\u4e8e PhotoKit \u4e0e AlAssetLibrary \u5c01\u88c5\u51fa\u901a\u7528\u7684\u65b9\u6cd5\u3002<\/p>\n<p>\u8fd9\u91cc\u5f15\u7528\u4e00\u4e0b\u524d\u6587\u4e2d\u5bf9 PhotoKit \u57fa\u672c\u6784\u6210\u7684\u4ecb\u7ecd\uff1a<\/p>\n<ul>\n<li>PHAsset: \u4ee3\u8868\u7167\u7247\u5e93\u4e2d\u7684\u4e00\u4e2a\u8d44\u6e90\uff0c\u8ddf ALAsset \u7c7b\u4f3c\uff0c\u901a\u8fc7 PHAsset \u53ef\u4ee5\u83b7\u53d6\u548c\u4fdd\u5b58\u8d44\u6e90<\/li>\n<li>PHFetchOptions: \u83b7\u53d6\u8d44\u6e90\u65f6\u7684\u53c2\u6570\uff0c\u53ef\u4ee5\u4f20 nil\uff0c\u5373\u4f7f\u7528\u7cfb\u7edf\u9ed8\u8ba4\u503c<\/li>\n<li>PHAssetCollection: PHCollection \u7684\u5b50\u7c7b\uff0c\u8868\u793a\u4e00\u4e2a\u76f8\u518c\u6216\u8005\u4e00\u4e2a\u65f6\u523b\uff0c\u6216\u8005\u662f\u4e00\u4e2a\u300c\u667a\u80fd\u76f8\u518c\uff08\u7cfb\u7edf\u63d0\u4f9b\u7684\u7279\u5b9a\u7684\u4e00\u7cfb\u5217\u76f8\u518c\uff0c\u4f8b\u5982\uff1a\u6700\u8fd1\u5220\u9664\uff0c\u89c6\u9891\u5217\u8868\uff0c\u6536\u85cf\u7b49\u7b49\uff0c\u5982\u4e0b\u56fe\u6240\u793a\uff09<\/li>\n<li>PHFetchResult: \u8868\u793a\u4e00\u7cfb\u5217\u7684\u8d44\u6e90\u7ed3\u679c\u96c6\u5408\uff0c\u4e5f\u53ef\u4ee5\u662f\u76f8\u518c\u7684\u96c6\u5408\uff0c\u4ece\u00a0PHCollection \u7684\u7c7b\u65b9\u6cd5\u4e2d\u83b7\u5f97<\/li>\n<li>PHImageManager: \u7528\u4e8e\u5904\u7406\u8d44\u6e90\u7684\u52a0\u8f7d\uff0c\u52a0\u8f7d\u56fe\u7247\u7684\u8fc7\u7a0b\u5e26\u6709\u7f13\u5b58\u5904\u7406\uff0c\u53ef\u4ee5\u901a\u8fc7\u4f20\u5165\u4e00\u4e2a PHImageRequestOptions \u63a7\u5236\u8d44\u6e90\u7684\u8f93\u51fa\u5c3a\u5bf8\u7b49\u89c4\u683c<\/li>\n<li>PHImageRequestOptions: \u5982\u4e0a\u9762\u6240\u8bf4\uff0c\u63a7\u5236\u52a0\u8f7d\u56fe\u7247\u65f6\u7684\u4e00\u7cfb\u5217\u53c2\u6570<\/li>\n<\/ul>\n<p>\u8fd9\u91cc\u8fd8\u6709\u4e00\u4e2a\u989d\u5916\u7684\u6982\u5ff5\u00a0<strong>PHCollectionList<\/strong>\uff0c\u8868\u793a\u4e00\u7ec4\u00a0PHCollection\uff0c\u5b83\u672c\u8eab\u4e5f\u662f\u4e00\u4e2a\u00a0PHCollection\uff0c\u56e0\u6b64\u00a0PHCollection \u4f5c\u4e3a\u4e00\u4e2a\u96c6\u5408\uff0c\u53ef\u4ee5\u5305\u542b\u5176\u4ed6\u96c6\u5408\uff0c\u8fd9\u4f7f\u5230 PhotoKit \u7684\u7ec4\u6210\u6bd4 ALAssetLibrary \u8981\u590d\u6742\u4e00\u4e9b\u3002\u53e6\u5916\u4e0e ALAssetLibrary \u76f8\u4f3c\uff0c\u4e00\u4e2a PHAsset \u53ef\u4ee5\u540c\u65f6\u5c5e\u4e8e\u591a\u4e2a\u4e0d\u540c\u7684 PHAssetCollection\uff0c\u6700\u5e38\u89c1\u7684\u4f8b\u5b50\u5c31\u662f\u521a\u521a\u62cd\u6444\u7684\u7167\u7247\uff0c\u81f3\u5c11\u540c\u65f6\u5c5e\u4e8e\u201c\u6700\u8fd1\u6dfb\u52a0\u201d\u3001\u201c\u76f8\u673a\u80f6\u5377\u201d\u4ee5\u53ca\u201c\u7167\u7247 &#8211; \u7cbe\u9009\u201d\u8fd9\u4e09\u4e2a PHAssetCollection\u3002\u5173\u4e8e\u8fd9\u51e0\u4e2a\u6982\u5ff5\u7684\u5173\u7cfb\u5982\u4e0b\u56fe\uff1a<\/p>\n<p><a href=\"http:\/\/www.zhuyanbin.com\/wp-content\/uploads\/2016\/01\/1.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter  wp-image-244\" src=\"http:\/\/www.zhuyanbin.com\/wp-content\/uploads\/2016\/01\/1.png\" alt=\"\" width=\"661\" height=\"543\" srcset=\"https:\/\/www.yanbin888.com\/wp-content\/uploads\/2016\/01\/1.png 820w, https:\/\/www.yanbin888.com\/wp-content\/uploads\/2016\/01\/1-300x247.png 300w, https:\/\/www.yanbin888.com\/wp-content\/uploads\/2016\/01\/1-768x631.png 768w\" sizes=\"auto, (max-width: 661px) 100vw, 661px\" \/><\/a><\/p>\n<h2>\u4e8c. \u00a0PhotoKit \u7684\u673a\u5236<\/h2>\n<h3>1. \u83b7\u53d6\u8d44\u6e90<\/h3>\n<p>\u5728 ALAssetLibrary \u4e2d\u83b7\u53d6\u6570\u636e\uff0c\u65e0\u8bba\u662f\u76f8\u518c\uff0c\u8fd8\u662f\u8d44\u6e90\uff0c\u672c\u8d28\u4e0a\u90fd\u662f\u4f7f\u7528\u679a\u4e3e\u7684\u65b9\u5f0f\uff0c\u904d\u5386\u7167\u7247\u5e93\u53d6\u5f97\u76f8\u5e94\u7684\u6570\u636e\uff0c\u5e76\u4e14\u6570\u636e\u662f\u4ece ALAssetLibrary\uff08\u7167\u7247\u5e93\uff09 &#8211; ALAssetGroup\uff08\u76f8\u518c\uff09- ALAsset\uff08\u8d44\u6e90\uff09\u8fd9\u4e00\u8def\u5f84\u9010\u5c42\u83b7\u53d6\uff0c\u5373\u4f7f\u6709\u76f4\u63a5\u4ece ALAssetLibrary \u8fd9\u4e00\u5c42\u83b7\u53d6 ALAsset \u7684\u63a5\u53e3\uff0c\u672c\u8d28\u4e0a\u4e5f\u662f\u679a\u4e3e ALAssetLibrary \u6240\u5f97\uff0c\u5e76\u4e0d\u662f\u76f4\u63a5\u83b7\u53d6\uff0c\u8fd9\u6837\u7684\u597d\u5904\u5f88\u660e\u663e\uff0c\u5c31\u662f\u975e\u5e38\u7b26\u5408\u5b9e\u9645\u5e94\u7528\u4e2d\u8d44\u6e90\u7684\u663e\u793a\u8def\u5f84\uff1a\u7167\u7247\u5e93 &#8211; \u76f8\u518c &#8211; \u56fe\u7247\u6216\u89c6\u9891\uff0c\u4f46\u7531\u4e8e\u91c7\u7528\u679a\u4e3e\u7684\u65b9\u5f0f\u83b7\u53d6\u8d44\u6e90\uff0c\u6548\u7387\u4f4e\u800c\u4e14\u4e0d\u7075\u6d3b\u3002<\/p>\n<p>\u800c\u5728 PhotoKit \u4e2d\uff0c\u5219\u662f\u91c7\u7528\u201c\u83b7\u53d6\u201d\u7684\u65b9\u5f0f\u62c9\u53d6\u8d44\u6e90\uff0c\u8fd9\u4e9b\u83b7\u53d6\u7684\u624b\u6bb5\uff0c\u90fd\u662f\u4e00\u7cfb\u5217\u5f62\u5982 class func fetchXXX(&#8230;, options: PHFetchOptions) -&gt; PHFetchResult \u7684\u7c7b\u65b9\u6cd5\uff0c\u5177\u4f53\u4f7f\u7528\u54ea\u4e2a\u7c7b\u65b9\u6cd5\uff0c\u5219\u89c6\u4e4e\u9700\u8981\u83b7\u53d6\u7684\u662f\u76f8\u518c\u3001\u65f6\u523b\u8fd8\u662f\u8d44\u6e90\uff0c\u8fd9\u7c7b\u65b9\u6cd5\u4e2d\u7684 option \u5145\u5f53\u4e86\u8fc7\u6ee4\u5668\u7684\u4f5c\u7528\uff0c\u53ef\u4ee5\u8fc7\u6ee4\u76f8\u518c\u7684\u7c7b\u578b\uff0c\u65e5\u671f\uff0c\u540d\u79f0\u7b49\uff0c\u4ece\u800c\u76f4\u63a5\u83b7\u53d6\u5bf9\u5e94\u7684\u8d44\u6e90\u800c\u4e0d\u9700\u8981\u679a\u4e3e\u3002\u4f8b\u5982\u5728\u524d\u6587\u4e2d\u5217\u4e3e\u4e2a\u7684\u51e0\u4e2a\u5c0f\u4f8b\u5b50\uff1a<\/p>\n<div>\n<div id=\"highlighter_132031\" class=\"syntaxhighlighter objc\">\/\/ \u5217\u51fa\u6240\u6709\u76f8\u518c\u667a\u80fd\u76f8\u518c<br \/>\nPHFetchResult *smartAlbums = [PHAssetCollection fetchAssetCollectionsWithType:PHAssetCollectionTypeSmartAlbum subtype:PHAssetCollectionSubtypeAlbumRegular options:nil];\/\/ \u5217\u51fa\u6240\u6709\u7528\u6237\u521b\u5efa\u7684\u76f8\u518c<br \/>\nPHFetchResult *topLevelUserCollections = [PHCollectionList fetchTopLevelUserCollectionsWithOptions:nil];\/\/ \u83b7\u53d6\u6240\u6709\u8d44\u6e90\u7684\u96c6\u5408\uff0c\u5e76\u6309\u8d44\u6e90\u7684\u521b\u5efa\u65f6\u95f4\u6392\u5e8f<br \/>\nPHFetchOptions *options = [[PHFetchOptions alloc] init];<br \/>\noptions.sortDescriptors = @[[NSSortDescriptor sortDescriptorWithKey:@&#8221;creationDate&#8221; ascending:YES]];<br \/>\nPHFetchResult *assetsFetchResults = [PHAsset fetchAssetsWithOptions:options];<\/div>\n<\/div>\n<p>\u5982\u524d\u9762\u63d0\u5230\u8fc7\u7684\u90a3\u6837\uff0c\u4ece\u00a0PHAssetCollection \u83b7\u53d6\u4e2d\u83b7\u53d6\u5230\u7684\u53ef\u4ee5\u662f\u76f8\u518c\u4e5f\u53ef\u4ee5\u662f\u8d44\u6e90\uff0c\u4f46\u65e0\u8bba\u662f\u54ea\u79cd\u5185\u5bb9\uff0c\u90fd\u7edf\u4e00\u4f7f\u7528\u00a0PHFetchResult \u5bf9\u8c61\u5c01\u88c5\u8d77\u6765\uff0c\u56e0\u6b64\u867d\u7136 PHAssetCollection \u83b7\u53d6\u5230\u7684\u7ed3\u679c\u53ef\u80fd\u662f\u591a\u6837\u7684\uff0c\u4f46\u901a\u8fc7\u00a0PHFetchResult \u5c31\u53ef\u4ee5\u4f7f\u7528\u7edf\u4e00\u7684\u65b9\u6cd5\u53bb\u5904\u7406\u8fd9\u4e9b\u5185\u5bb9\uff08\u5373\u904d\u5386 PHFetchResult\uff09\u3002\u4f8b\u5982\u6269\u5c55\u4e0a\u9762\u7684\u4f8b\u5b50\uff1a<\/p>\n<div>\n<div id=\"highlighter_334710\" class=\"syntaxhighlighter objc\">\/\/ \u5217\u51fa\u6240\u6709\u76f8\u518c\u667a\u80fd\u76f8\u518c<br \/>\nPHFetchResult *smartAlbums = [PHAssetCollection fetchAssetCollectionsWithType:PHAssetCollectionTypeSmartAlbum subtype:PHAssetCollectionSubtypeAlbumRegular options:nil];<br \/>\n\/\/ \u8fd9\u65f6 smartAlbums \u4e2d\u4fdd\u5b58\u7684\u5e94\u8be5\u662f\u5404\u4e2a\u667a\u80fd\u76f8\u518c\u5bf9\u5e94\u7684 PHAssetCollection<br \/>\nfor (NSInteger i = 0; i &lt; fetchResult.count; i++) {<br \/>\n\/\/ \u83b7\u53d6\u4e00\u4e2a\u76f8\u518c\uff08PHAssetCollection\uff09<br \/>\nPHCollection *collection = fetchResult[i];<br \/>\nif ([collection isKindOfClass:[PHAssetCollection class]]) {<br \/>\nPHAssetCollection *assetCollection = (PHAssetCollection *)collection;<br \/>\n\/\/ \u4ece\u6bcf\u4e00\u4e2a\u667a\u80fd\u76f8\u518c\u4e2d\u83b7\u53d6\u5230\u7684 PHFetchResult \u4e2d\u5305\u542b\u7684\u624d\u662f\u771f\u6b63\u7684\u8d44\u6e90\uff08PHAsset\uff09<br \/>\nPHFetchResult *fetchResult = [PHAsset fetchAssetsInAssetCollection:assetCollection options:fetchOptions];<br \/>\nelse {<br \/>\nNSAssert(NO, @&#8221;Fetch collection not PHCollection: %@&#8221;, collection);<br \/>\n}<br \/>\n}\/\/ \u83b7\u53d6\u6240\u6709\u8d44\u6e90\u7684\u96c6\u5408\uff0c\u5e76\u6309\u8d44\u6e90\u7684\u521b\u5efa\u65f6\u95f4\u6392\u5e8f<br \/>\nPHFetchOptions *options = [[PHFetchOptions alloc] init];<br \/>\noptions.sortDescriptors = @[[NSSortDescriptor sortDescriptorWithKey:@&#8221;creationDate&#8221; ascending:YES]];<br \/>\nPHFetchResult *assetsFetchResults = [PHAsset fetchAssetsWithOptions:options];<br \/>\n\/\/ \u8fd9\u65f6 assetsFetchResults \u4e2d\u5305\u542b\u7684\uff0c\u5e94\u8be5\u5c31\u662f\u5404\u4e2a\u8d44\u6e90\uff08PHAsset\uff09<br \/>\nfor (NSInteger i = 0; i &lt; fetchResult.count; i++) {<br \/>\n\/\/ \u83b7\u53d6\u4e00\u4e2a\u8d44\u6e90\uff08PHAsset\uff09<br \/>\nPHAsset *asset = fetchResult[i];<br \/>\n}<\/div>\n<\/div>\n<h3>\u00a02. \u83b7\u53d6\u56fe\u50cf\u7684\u65b9\u5f0f\u4e0e\u5751\u70b9<\/h3>\n<p>\u7ecf\u8fc7\u4e86\u4e0a\u9762\u7684\u6b65\u9aa4\uff0c\u5df2\u7ecf\u53ef\u4ee5\u4e86\u89e3\u5230\u5982\u4f55\u5728 PhotoKit \u4e2d\u83b7\u53d6\u5230\u4ee3\u8868\u8d44\u6e90\u7684 PHAsset \u4e86\uff0c\u4f46\u4e0e ALAssetLibrary \u4e2d\u4ece ALAsset \u4e2d\u76f4\u63a5\u83b7\u53d6\u56fe\u50cf\u7684\u65b9\u5f0f\u4e0d\u540c\uff0cPhotoKit \u65e0\u6cd5\u76f4\u63a5\u4ece PHAsset \u7684\u5b9e\u4f8b\u4e2d\u83b7\u53d6\u56fe\u50cf\uff0c\u800c\u662f\u5f15\u5165\u4e86\u4e00\u4e2a\u7ba1\u7406\u5668\u00a0PHImageManager \u83b7\u53d6\u56fe\u50cf\u3002PHImageManager \u662f\u901a\u8fc7\u8bf7\u6c42\u7684\u65b9\u5f0f\u62c9\u53d6\u56fe\u50cf\uff0c\u5e76\u53ef\u4ee5\u63a7\u5236\u8bf7\u6c42\u5f97\u5230\u7684\u56fe\u50cf\u7684\u5c3a\u5bf8\u3001\u526a\u88c1\u65b9\u5f0f\u3001\u8d28\u91cf\uff0c\u7f13\u5b58\u4ee5\u53ca\u8bf7\u6c42\u672c\u8eab\u7684\u7ba1\u7406\uff08\u53d1\u51fa\u8bf7\u6c42\u3001\u53d6\u6d88\u8bf7\u6c42\uff09\u7b49\u3002\u800c\u8bf7\u6c42\u56fe\u50cf\u7684\u65b9\u6cd5\u662f \u00a0PHImageManager \u7684\u4e00\u4e2a\u5b9e\u4f8b\u65b9\u6cd5\uff1a<\/p>\n<div>\n<div id=\"highlighter_705050\" class=\"syntaxhighlighter objc\">\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td class=\"gutter\">\n<div class=\"line number1 index0 alt2\">1<\/div>\n<div class=\"line number2 index1 alt1\">2<\/div>\n<\/td>\n<td class=\"code\"><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<p>\u8fd9\u4e2a\u65b9\u6cd5\u4e2d\u7684\u53c2\u6570\u5751\u70b9\u4e0d\u5c11\uff0c\u4e0b\u9762\u9010\u4e2a\u53c2\u6570\u5217\u4e3e\u4e00\u4e0b\u5176\u4f5c\u7528\u53ca\u5751\u70b9\uff1a<\/p>\n<ul>\n<li>asset\uff0c\u56fe\u50cf\u5bf9\u5e94\u7684 PHAsset\u3002<\/li>\n<li>targetSize\uff0c\u9700\u8981\u83b7\u53d6\u7684\u56fe\u50cf\u7684\u5c3a\u5bf8\uff0c\u5982\u679c\u8f93\u5165\u7684\u5c3a\u5bf8\u5927\u4e8e\u8d44\u6e90\u539f\u56fe\u7684\u5c3a\u5bf8\uff0c\u5219\u53ea\u8fd4\u56de\u539f\u56fe\u3002<strong>\u9700\u8981\u6ce8\u610f\u5728 PHImageManager \u4e2d\uff0c\u6240\u6709\u7684\u5c3a\u5bf8\u90fd\u662f\u7528 Pixel \u4f5c\u4e3a\u5355\u4f4d\uff08Note that all sizes are in pixels\uff09\uff0c\u56e0\u6b64\u8fd9\u91cc\u60f3\u8981\u83b7\u5f97\u6b63\u786e\u5927\u5c0f\u7684\u56fe\u50cf\uff0c\u9700\u8981\u628a\u8f93\u5165\u7684\u5c3a\u5bf8\u8f6c\u6362\u4e3a Pixel<\/strong>\u3002<strong>\u5982\u679c\u9700\u8981\u8fd4\u56de\u539f\u56fe\u5c3a\u5bf8\uff0c\u53ef\u4ee5\u4f20\u5165 PhotoKit \u4e2d\u9884\u5148\u5b9a\u4e49\u597d\u7684\u5e38\u91cf\u00a0PHImageManagerMaximumSize<\/strong>\uff0c\u8868\u793a\u8fd4\u56de\u53ef\u9009\u8303\u56f4\u5185\u7684\u6700\u5927\u7684\u5c3a\u5bf8\uff0c\u5373\u539f\u56fe\u5c3a\u5bf8\u3002<\/li>\n<li>contentMode\uff0c\u56fe\u50cf\u7684\u526a\u88c1\u65b9\u5f0f\uff0c\u4e0e\u00a0UIView \u7684 contentMode \u53c2\u6570\u76f8\u4f3c\uff0c\u63a7\u5236\u7167\u7247\u5e94\u8be5\u4ee5\u6309\u6bd4\u4f8b\u7f29\u653e\u8fd8\u662f\u6309\u6bd4\u4f8b\u586b\u5145\u7684\u65b9\u5f0f\u653e\u5230\u6700\u7ec8\u5c55\u793a\u7684\u5bb9\u5668\u5185\u3002<strong>\u6ce8\u610f\u5982\u679c targetSize \u4f20\u5165\u00a0PHImageManagerMaximumSize\uff0c\u5219 contentMode \u65e0\u8bba\u4f20\u5165\u4ec0\u4e48\u503c\u90fd\u4f1a\u88ab\u89c6\u4e3a\u00a0PHImageContentModeDefault<\/strong>\u3002<\/li>\n<li>options\uff0c\u4e00\u4e2a\u00a0PHImageRequestOptions \u7684\u5b9e\u4f8b\uff0c\u53ef\u4ee5\u63a7\u5236\u7684\u5185\u5bb9\u76f8\u5f53\u4e30\u5bcc\uff0c\u5305\u62ec\u56fe\u50cf\u7684\u8d28\u91cf\u3001\u7248\u672c\uff0c\u4e5f\u4f1a\u6709\u53c2\u6570\u63a7\u5236\u56fe\u50cf\u7684\u526a\u88c1\uff0c\u4e0b\u9762\u518d\u5c55\u5f00\u8bf4\u660e\u3002<\/li>\n<li>resultHandler\uff0c\u8bf7\u6c42\u7ed3\u675f\u540e\u88ab\u8c03\u7528\u7684 block\uff0c\u8fd4\u56de\u4e00\u4e2a\u5305\u542b\u8d44\u6e90\u5bf9\u4e8e\u56fe\u50cf\u7684 UIImage \u548c\u5305\u542b\u56fe\u50cf\u4fe1\u606f\u7684\u4e00\u4e2a NSDictionary\uff0c\u5728\u6574\u4e2a\u8bf7\u6c42\u7684\u5468\u671f\u4e2d\uff0c\u8fd9\u4e2a block \u53ef\u80fd\u4f1a\u88ab\u591a\u6b21\u8c03\u7528\uff0c\u5173\u4e8e\u8fd9\u70b9\u8fde\u540coptions \u53c2\u6570\u5728\u4e0b\u9762\u5c55\u5f00\u8bf4\u660e\u3002<\/li>\n<\/ul>\n<h4>\uff081\uff09PHImageRequestOptions \u4e0e iCloud \u7167\u7247\u5e93<\/h4>\n<p>PHImageRequestOptions \u4e2d\u5305\u542b\u4e86\u4e00\u7cfb\u5217\u63a7\u5236\u8bf7\u6c42\u56fe\u50cf\u7684\u5c5e\u6027\u3002<\/p>\n<p>resizeMode \u5c5e\u6027\u63a7\u5236\u56fe\u50cf\u7684\u526a\u88c1\uff0c\u4e0d\u77e5\u9053\u4e3a\u4ec0\u4e48 PhotoKit \u4f1a\u5728\u8bf7\u6c42\u56fe\u50cf\u65b9\u6cd5\uff08requestImageForAsset\uff09\u4e2d\u5df2\u7ecf\u6709\u63a7\u5236\u56fe\u50cf\u526a\u88c1\u7684\u53c2\u6570\u540e\uff08contentMode\uff09\uff0c\u8fd8\u5728 options \u4e2d\u52a0\u5165\u63a7\u5236\u526a\u88c1\u7684\u5c5e\u6027\uff0c\u4f46\u5982\u679c\u4e24\u4e2a\u5730\u65b9\u6240\u63a7\u5236\u7684\u526a\u88c1\u7ed3\u679c\u6709\u6240\u51b2\u7a81\uff0cPhotoKit \u4f1a\u4ee5 resizeMode \u7684\u7ed3\u679c\u4e3a\u51c6\u3002\u53e6\u5916\uff0cresizeMode \u4e5f\u6709\u63a7\u5236\u56fe\u50cf\u8d28\u91cf\u7684\u4f5c\u7528\u3002\u5982\u00a0resizeMode\u00a0\u8bbe\u7f6e\u4e3a\u00a0PHImageRequestOptionsResizeModeExact \u5219\u8fd4\u56de\u56fe\u50cf\u5fc5\u987b\u548c\u76ee\u6807\u5927\u5c0f\u76f8\u5339\u914d\uff0c\u5e76\u4e14\u56fe\u50cf\u8d28\u91cf\u4e5f\u4e3a\u9ad8\u8d28\u91cf\u56fe\u50cf\uff0c<strong>\u800c\u8bbe\u7f6e\u4e3a PHImageRequestOptionsResizeModeFast \u5219\u8bf7\u6c42\u7684\u6548\u7387\u66f4\u9ad8\uff0c\u4f46\u8fd4\u56de\u7684\u56fe\u50cf\u53ef\u80fd\u548c\u76ee\u6807\u5927\u5c0f\u4e0d\u4e00\u6837\u5e76\u4e14\u8d28\u91cf\u8f83\u4f4e\u3002<\/strong><\/p>\n<p>\u5728 PhotoKit \u4e2d\uff0c\u5bf9 iCloud \u7167\u7247\u5e93\u6709\u5f88\u597d\u7684\u652f\u6301\uff0c\u5982\u679c\u7528\u6237\u5f00\u542f\u4e86 iCloud \u7167\u7247\u5e93\uff0c\u5e76\u4e14\u9009\u62e9\u4e86\u201c\u4f18\u5316 iPhone\/iPad \u50a8\u5b58\u7a7a\u95f4\u201d\uff0c\u6216\u8005\u9009\u62e9\u4e86\u201c\u4e0b\u8f7d\u5e76\u4fdd\u7559\u539f\u4ef6\u201d\u4f46\u539f\u4ef6\u8fd8\u6ca1\u6709\u52a0\u8f7d\u597d\u7684\u65f6\u5019\uff0cPhotoKit \u4e5f\u4f1a\u9884\u5148\u62ff\u5230\u8fd9\u4e9b\u975e\u672c\u5730\u56fe\u50cf\u7684 PHAsset\uff0c\u4f46\u662f\u7531\u4e8e\u672c\u5730\u5e76\u6ca1\u6709\u539f\u56fe\uff0c\u6240\u4ee5\u5982\u679c\u4ea7\u751f\u4e86\u8bf7\u6c42\u9ad8\u6e05\u56fe\u7684\u8bf7\u6c42\uff0cPHotoKit \u4f1a\u5c1d\u8bd5\u4ece iCloud \u4e0b\u8f7d\u56fe\u7247\uff0c\u800c\u8fd9\u4e2a\u884c\u4e3a\u6700\u7ec8\u7684\u8868\u73b0\uff0c\u4f1a\u88ab\u00a0PHImageRequestOptions \u4e2d\u7684\u503c\u6240\u5f71\u54cd\u3002PHImageRequestOptions \u4e2d\u5e38\u5e38\u4f1a\u7528\u7684\u51e0\u4e2a\u5c5e\u6027\u5982\u4e0b\uff1a<\/p>\n<p>networkAccessAllowed \u53c2\u6570\u63a7\u5236\u662f\u5426\u5141\u8bb8\u7f51\u7edc\u8bf7\u6c42\uff0c\u9ed8\u8ba4\u4e3a NO\uff0c\u5982\u679c\u4e0d\u5141\u8bb8\u7f51\u7edc\u8bf7\u6c42\uff0c\u90a3\u4e48\u5c31\u6ca1\u6709\u7136\u540e\u4e86\uff0c\u5f53\u7136\u4e5f\u62c9\u53d6\u4e0d\u5230 iCloud \u7684\u56fe\u50cf\u539f\u4ef6\u3002deliveryMode \u5219\u7528\u4e8e\u63a7\u5236\u8bf7\u6c42\u7684\u56fe\u7247\u8d28\u91cf\u3002synchronous \u63a7\u5236\u662f\u5426\u4e3a\u540c\u6b65\u8bf7\u6c42\uff0c\u9ed8\u8ba4\u4e3a NO\uff0c\u5982\u679c\u00a0synchronous \u4e3a YES\uff0c\u5373\u540c\u6b65\u8bf7\u6c42\u65f6\uff0cdeliveryMode \u4f1a\u88ab\u89c6\u4e3a PHImageRequestOptionsDeliveryModeHighQualityFormat\uff0c\u5373\u81ea\u52a8\u8fd4\u56de\u9ad8\u8d28\u91cf\u7684\u56fe\u7247\uff0c\u56e0\u6b64\u4e0d\u5efa\u8bae\u4f7f\u7528\u540c\u6b65\u8bf7\u6c42\uff0c\u5426\u5219\u5982\u679c\u754c\u9762\u9700\u8981\u7b49\u5f85\u8fd4\u56de\u7684\u56fe\u50cf\u624d\u80fd\u8fdb\u4e00\u6b65\u4f5c\u51fa\u53cd\u5e94\uff0c\u5219\u53cd\u5e94\u65f6\u957f\u4f1a\u5f88\u957f\u3002<\/p>\n<p>\u8fd8\u6709\u4e00\u4e2a\u4e0e iCloud \u5bc6\u5207\u76f8\u5173\u7684\u5c5e\u6027\u00a0progressHandler\uff0c\u5f53\u56fe\u50cf\u9700\u8981\u4ece iCloud \u4e0b\u8f7d\u65f6\uff0c\u8fd9\u4e2a block \u4f1a\u88ab\u81ea\u52a8\u8c03\u7528\uff0cblock \u4e2d\u4f1a\u8fd4\u56de\u56fe\u50cf\u4e0b\u8f7d\u7684\u8fdb\u5ea6\uff0c\u56fe\u50cf\u7684\u4fe1\u606f\uff0c\u51fa\u9519\u4fe1\u606f\u3002\u5f00\u53d1\u8005\u53ef\u4ee5\u5229\u7528\u8fd9\u4e9b\u4fe1\u606f\u53cd\u9988\u7ed9\u7528\u6237\u5f53\u524d\u56fe\u50cf\u7684\u4e0b\u8f7d\u8fdb\u5ea6\u4ee5\u53ca\u72b6\u51b5\uff0c<strong>\u4f46\u9700\u8981\u6ce8\u610f\u00a0progressHandler \u4e0d\u5728\u4e3b\u7ebf\u7a0b\u4e0a\u6267\u884c\uff0c\u56e0\u6b64\u5728\u5176\u4e2d\u9700\u8981\u64cd\u4f5c UI\uff0c\u5219\u9700\u8981\u624b\u5de5\u653e\u5230\u4e3b\u7ebf\u7a0b\u6267\u884c\u3002<\/strong><\/p>\n<p>\u4e0a\u9762\u6709\u63d0\u5230\uff0crequestImageForAsset \u4e2d\u7684\u53c2\u6570\u00a0resultHandler \u53ef\u80fd\u4f1a\u88ab\u591a\u6b21\u8c03\u7528\uff0c\u8fd9\u79cd\u60c5\u51b5\u5c31\u662f\u56fe\u50cf\u9700\u8981\u4ece iCloud \u4e2d\u4e0b\u8f7d\u7684\u60c5\u51b5\u3002\u5728\u00a0requestImageForAsset \u8fd4\u56de\u7684\u5185\u5bb9\u4e2d\uff0c\u4e00\u5f00\u59cb\u7684\u90a3\u4e00\u6b21\u8bf7\u6c42\u4e2d\u4f1a\u8fd4\u56de\u4e00\u4e2a\u5c0f\u5c3a\u5bf8\u7684\u56fe\u50cf\u7248\u672c\uff0c\u5f53\u9ad8\u6e05\u56fe\u50cf\u8fd8\u5728\u4e0b\u8f7d\u65f6\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u9996\u5148\u7ed9\u7528\u6237\u5c55\u793a\u8fd9\u4e2a\u4f4e\u6e05\u7684\u56fe\u50cf\u7248\u672c\uff0c\u7136\u540e block \u5728\u591a\u6b21\u8c03\u7528\u540e\uff0c\u6700\u7ec8\u4f1a\u8fd4\u56de\u9ad8\u6e05\u7684\u539f\u56fe\u3002\u81f3\u4e8e\u5f53\u524d\u8fd4\u56de\u7684\u56fe\u50cf\u662f\u54ea\u4e2a\u7248\u672c\u7684\u56fe\u50cf\uff0c\u53ef\u4ee5\u901a\u8fc7 block \u8fd4\u56de\u7684 NSDictionary info \u4e2d\u83b7\u77e5\uff0cPHImageResultIsDegradedKey \u8868\u793a\u5f53\u524d\u8fd4\u56de\u7684 UIImage \u662f\u4f4e\u6e05\u56fe\u3002\u5982\u679c\u9700\u8981\u5224\u65ad\u662f\u5426\u5df2\u7ecf\u83b7\u5f97\u9ad8\u6e05\u56fe\uff0c\u53ef\u4ee5\u8fd9\u6837\u5224\u65ad\uff1a<\/p>\n<div>\n<div id=\"highlighter_100448\" class=\"syntaxhighlighter objc\">\n<div class=\"line number1 index0 alt2\"><code class=\"objc comment\">\/\/ \u6392\u9664\u53d6\u6d88\uff0c\u9519\u8bef\uff0c\u4f4e\u6e05\u56fe\u4e09\u79cd\u60c5\u51b5\uff0c\u5373\u5df2\u7ecf\u83b7\u53d6\u5230\u4e86\u9ad8\u6e05\u56fe<\/code><\/div>\n<div class=\"line number2 index1 alt1\"><code class=\"objc datatypes\">BOOL<\/code> <code class=\"objc plain\">downloadFinined = ![[info objectForKey:PHImageCancelledKey] boolValue] &amp;&amp; ![info objectForKey:PHImageErrorKey] &amp;&amp; ![[info objectForKey:PHImageResultIsDegradedKey] boolValue];<\/code><\/div>\n<\/div>\n<\/div>\n<p><strong>\u53e6\u5916\uff0c\u5f53\u6211\u4eec\u4f7f\u7528\u00a0requestImageForAsset \u53d1\u51fa\u5bf9\u56fe\u50cf\u7684\u8bf7\u6c42\u65f6\uff0c\u5982\u679c\u5728\u540c\u4e00\u4e2a PHImageManager \u4e2d\u540c\u65f6\u5bf9\u540c\u4e00\u4e2a\u8d44\u6e90\u53d1\u51fa\u56fe\u50cf\u8bf7\u6c42\uff0c\u8bf7\u6c42\u7684\u8fdb\u5ea6\u662f\u53ef\u4ee5\u5171\u4eab\u7684\uff0c\u56e0\u6b64\u6211\u4eec\u53ef\u4ee5\u5229\u7528\u8fd9\u4e2a\u7279\u6027\uff0c\u628a PHImageManager \u4ee5\u5355\u4f8b\u7684\u5f62\u5f0f\u4f7f\u7528\uff0c\u8fd9\u6837\u5728\u5207\u6362\u754c\u9762\u65f6\u4e5f\u4e0d\u7528\u62c5\u5fc3\u65e0\u6cd5\u4f20\u9012\u56fe\u50cf\u7684\u4e0b\u8f7d\u8fdb\u5ea6\u3002\u4f8b\u5982\uff0c\u5728\u56fe\u50cf\u7684\u5217\u8868\u9875\u9762\u89e6\u53d1\u4e86\u4e0b\u8f7d\u56fe\u50cf\uff0c\u5f53\u6211\u4eec\u79bb\u5f00\u5217\u8868\u9875\u9762\u8fdb\u5165\u9884\u89c8\u5927\u56fe\u754c\u9762\u65f6\uff0c\u5e76\u4e0d\u7528\u62c5\u5fc3\u4f1a\u91cd\u65b0\u56fe\u50cf\u4f1a\u91cd\u65b0\u4e0b\u8f7d\uff0c\u53ea\u8981\u6ca1\u6709\u624b\u5de5\u53d6\u6d88\u56fe\u50cf\u4e0b\u8f7d\uff0c\u8fdb\u5165\u9884\u89c8\u5927\u56fe\u754c\u9762\u4e0b\u8f7d\u56fe\u50cf\u4f1a\u81ea\u52a8\u7ee7\u7eed\u4ece\u4e0a\u6b21\u7684\u8fdb\u5ea6\u4e0b\u8f7d\u56fe\u50cf\u3002<\/strong><\/p>\n<p>\u5982\u679c\u5e0c\u671b\u53d6\u6d88\u4e0b\u8f7d\u56fe\u50cf\uff0c\u5219\u53ef\u4ee5\u4f7f\u7528\u00a0PHImageManager \u7684 \u00a0cancelImageRequest 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\u7528\u4e8e\u5904\u7406\u56fe\u50cf\u7684\u7f13\u5b58\uff0c\u4f46\u662f\u8fd9\u4e2a\u5b50\u7c7b\u5e76\u4e0d\u53ea\u662f\u56fe\u50cf\u672c\u8eab\u7684\u7f13\u5b58\uff0c\u800c\u662f\u66f4\u52a0\u5b9e\u7528\u2014\u2014\u5904\u7406\u56fe\u50cf\u7684\u6574\u4e2a\u52a0\u8f7d\u8fc7\u7a0b\u7684\u7f13\u5b58\u3002\u4f8b\u5982\u8981\u5728\u4e00\u4e2a\u00a0collectionView \u4e0a\u5c55\u793a\u56fe\u50cf\u5217\u8868\u8fd9\u7c7b\u5927\u91cf\u7684\u8d44\u6e90\u56fe\u50cf\u7684\u7f29\u7565\u56fe\u65f6\uff0c\u53ef\u4ee5\u5229\u7528 PHImageCachingManager\u00a0\u9884\u5148\u5c06\u4e00\u4e9b\u56fe\u50cf\u52a0\u8f7d\u5230\u5185\u5b58\u4e2d\uff0c\u8fd9\u5bf9\u4f18\u5316 collectionView \u6eda\u52a8\u65f6\u7684\u8868\u73b0\u5f88\u6709\u5e2e\u52a9\u3002\u7136\u800c\uff0c\u8fd9\u53ea\u662f\u5b98\u65b9\u8bf4\u6cd5\uff0c\u5b9e\u9645\u4e0a\u7531\u4e8e\u52a0\u8f7d\u56fe\u50cf\u7684\u8fc7\u7a0b\u5e76\u4e0d\u786e\u5b9a\uff0c\u6bcf\u4e2a\u4e1a\u52a1\u52a0\u8f7d\u56fe\u50cf\u7684\u5b9e\u9645\u9700\u6c42\u90fd\u53ef\u80fd\u4e0d\u4e00\u6837\uff0c\u56e0\u6b64\u00a0PHImageCachingManager \u4e5f\u91c7\u7528\u6bd4\u8f83\u677e\u6563\u7684\u65b9\u6cd5\u53bb\u63a7\u5236\u8fd9\u4e9b\u7f13\u5b58\uff0c\u5176\u4e2d\u7684\u5173\u952e\u65b9\u6cd5\uff1a<\/p>\n<div>\n<div id=\"highlighter_7276\" class=\"syntaxhighlighter objc\"><code class=\"objc plain\">- (<\/code><code class=\"objc datatypes\">void<\/code><code class=\"objc plain\">)startCachingImagesForAssets:(<\/code><code class=\"objc keyword\">NSArray<\/code><code class=\"objc plain\">&lt;PHAsset *&gt; *)assets targetSize:(CGSize)targetSize contentMode:(PHImageContentMode)contentMode options:(nullable PHImageRequestOptions 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targetSize\uff0ccontentMode\uff0c\u4ee5\u53ca\u4e00\u4e2a\u00a0PHImageRequestOptions\uff0c<strong>\u5982\u4e0a\u9762\u6240\u8ff0\uff0c\u8fd9\u4e9b\u53c2\u6570\u4e4b\u95f4\u7684\u6709\u7740\u4e92\u76f8\u5f71\u54cd\u7684\u4f5c\u7528\uff0c\u56e0\u6b64\u5b9e\u9645\u4e0a\u4e0d\u540c\u7684\u573a\u666f\u5bf9\u4e8e\u6bcf\u4e2a\u53c2\u6570\u8981\u6c42\u90fd\u4e0d\u4e00\u6837\uff0c\u800c\u8fd9\u4e9b\u53c2\u6570\u7684\u6700\u4f73\u53d6\u503c\u4e5f\u53ea\u80fd\u901a\u8fc7\u5b9e\u9645\u5728\u573a\u666f\u4e2d\u6d4b\u8bd5\u6240\u5f97\u3002<\/strong>\u56e0\u6b64\uff0c\u6bd4\u8d77\u4f7f\u7528\u00a0PHImageCachingManager\uff0c\u6211\u603b\u7ed3\u4e86\u4e00\u4e9b\u66f4\u4e3a\u7b80\u6613\u53ef\u884c\u7684\u7f13\u5b58\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li>\u83b7\u53d6\u56fe\u7247\u65f6\u5c3d\u91cf\u83b7\u53d6\u9884\u89c8\u56fe\uff0c\u4e0d\u8981\u76f4\u63a5\u663e\u793a\u539f\u4ef6\uff0c\u5efa\u8bae\u83b7\u53d6\u4e0e\u8bbe\u5907\u5c4f\u5e55\u540c\u6837\u5927\u5c0f\u7684\u56fe\u50cf\u5373\u53ef\uff0c\u5b9e\u9645\u4e0a\u7cfb\u7edf\u76f8\u518c\u9884\u89c8\u5927\u56fe\u65f6\u4f7f\u7528\u7684\u4e5f\u662f\u9884\u89c8\u56fe\uff0c\u8fd9\u4e5f\u662f\u7cfb\u7edf\u76f8\u518c\u52a0\u8f7d\u901f\u5ea6\u5feb\u7684\u539f\u56e0\u3002<\/li>\n<li>\u83b7\u53d6\u56fe\u7247\u4f7f\u7528\u5f02\u6b65\u8bf7\u6c42\uff0c\u5982\u4e0a\u9762\u6240\u8ff0\uff0c\u5f53\u8bf7\u6c42\u4e3a\u5f02\u6b65\u65f6\u8fd4\u56de\u56fe\u50cf\u7684 block \u4f1a\u88ab\u591a\u6b21\u8c03\u7528\uff0c\u5148\u8fd4\u56de\u4f4e\u6e05\u56fe\uff0c\u518d\u8fd4\u56de\u9ad8\u6e05\u56fe\uff0c\u8fd9\u6837\u4e00\u6765\u53ef\u4ee5\u5927\u5927\u51cf\u5c11 UI \u7684\u7b49\u5f85\u65f6\u95f4\u3002<\/li>\n<li>\u83b7\u53d6\u5230\u9ad8\u6e05\u56fe\u540e\u53ef\u4ee5\u7f13\u5b58\u4e0b\u6765\uff0c\u7b80\u5355\u5730\u4f7f\u7528\u53d8\u91cf\u7f13\u5b58\u5373\u53ef\uff0c\u5c3d\u91cf\u5728\u83b7\u53d6\u5230\u9ad8\u6e05\u56fe\u540e\u907f\u514d\u518d\u6b21\u53d1\u8d77\u8bf7\u6c42\u83b7\u53d6\u56fe\u50cf\u3002\u56e0\u4e3a\u5373\u4f7f\u56fe\u50cf\u539f\u4ef6\u5df2\u7ecf\u4e0b\u8f7d\u4e0b\u6765\uff0c\u91cd\u65b0\u8bf7\u6c42\u9ad8\u6e05\u56fe\u65f6\u56e0\u4e3a\u56fe\u7247\u7684\u5c3a\u5bf8\u6bd4\u8f83\u5927\uff0c\u56e0\u6b64\u7cfb\u7edf\u751f\u6210\u56fe\u50cf\u548c\u526a\u88c1\u56fe\u50cf\u4e5f\u4f1a\u82b1\u8d39\u4e00\u4e9b\u65f6\u95f4\u3002<\/li>\n<li>\u9884\u5148\u52a0\u8f7d\u56fe\u50cf\uff0c\u5982\u50cf\u9884\u89c8\u5927\u56fe\u8fd9\u7c7b\u60c5\u666f\u4e2d\uff0c\u7528\u6237\u540c\u65f6\u53ea\u4f1a\u770b\u5230\u4e00\u5f20\u5927\u56fe\uff0c\u56e0\u6b64\u5728\u89c2\u770b\u67d0\u4e00\u5f20\u56fe\u7247\u65f6\uff0c\u9884\u5148\u8bf7\u6c42\u5176\u90bb\u8fd1\u4e24\u5f20\u56fe\u7247\uff0c\u5bf9\u4e8e\u52a0\u5feb UI \u7684\u54cd\u5e94\u5f88\u6709\u5e2e\u52a9\u3002<\/li>\n<\/ul>\n<p>\u7ecf\u8fc7\u5b9e\u9645\u6d4b\u8bd5\uff0c\u5982\u679c\u8bf7\u6c42\u7684\u662f\u7f29\u7565\u56fe\uff08\u5373\u5c3a\u5bf8\u5c0f\u7684\u56fe\u50cf\uff09\uff0c\u90a3\u4e48\u5373\u4f7f\u8bf7\u6c42\u7684\u56fe\u50cf\u5f88\u591a\uff0c\u4ecd\u4e0d\u4f1a\u4ea7\u751f\u4efb\u4f55\u4e0d\u6d41\u7545\u7684\u8868\u73b0\uff0c\u4f46\u5982\u679c\u8bf7\u6c42\u7684\u662f\u9ad8\u6e05\u5927\u56fe\uff0c\u90a3\u4e48\u5373\u4f7f\u53ea\u662f\u540c\u65f6\u8bf7\u6c42\u51e0\u5f20\u56fe\u90fd\u4f1a\u4ea7\u751f\u4e0d\u6d41\u7545\u7684\u72b6\u51b5\u3002\u5982\u4e0a\u9762\u63d0\u5230\u8fc7\u7684\u90a3\u6837\uff0c\u8fd9\u4e9b\u7684\u72b6\u51b5\u7684\u51fa\u73b0\u5f88\u53ef\u80fd\u662f\u8bf7\u6c42\u5927\u56fe\u65f6\u7531\u56fe\u7247\u5143\u6570\u636e\u4ea7\u751f\u56fe\u50cf\uff0c\u4ee5\u53ca\u526a\u88c1\u56fe\u50cf\u7684\u8fc7\u7a0b\u8017\u65f6\u8f83\u591a\u3002\u6240\u4ee5\u6309\u5b9e\u9645\u8868\u73b0\u6765\u770b\uff0c\u5373\u4f7f PhotoKit \u6709\u81ea\u5df1\u7684\u7f13\u5b58\u7b56\u7565\uff0c\u4ecd\u7136\u5f88\u96be\u907f\u514d\u8fd9\u90e8\u5206\u8017\u65f6\u3002\u56e0\u6b64\u4e0a\u9762\u51e0\u70b9\u4f18\u5316\u83b7\u53d6\u56fe\u50cf\u7684\u7b56\u7565\u91cd\u70b9\u4e5f\u662f\u653e\u5728\u51cf\u5c11\u56fe\u50cf\u5927\u5c0f\uff0c\u5f02\u6b65\u8bf7\u6c42\u4ee5\u53ca\u505a\u7f13\u5b58\u51e0\u4e2a\u65b9\u9762\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>link:\u00a0<a href=\"http:\/\/kayosite.com\/ios-development-and-detail-of-photo-framework-part-two.html\">http:\/\/kayosite.com\/ios-development-and-detail-of-photo-framework-part-two.html<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00. \u6982\u51b5 \u672c\u6587\u63a5\u7740\u00a0iOS \u5f00\u53d1\u4e4b\u7167\u7247\u6846\u67b6\u8be6\u89e3\uff0c\u4fa7\u91cd\u4ecb\u7ecd\u5728\u524d\u6587\u4e2d\u7b80\u5355\u4ecb\u7ecd\u8fc7\u7684 PhotoKit \u53ca\u5176\u4e0e AL <span class=\"ellipsis\">&hellip;<\/span> <span class=\"more-link-wrap\"><a href=\"https:\/\/www.yanbin888.com\/?p=179\" class=\"more-link\"><span>Read More &rarr;<\/span><\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[29],"tags":[30],"class_list":["post-179","post","type-post","status-publish","format-standard","hentry","category-ios","tag-ios"],"_links":{"self":[{"href":"https:\/\/www.yanbin888.com\/index.php?rest_route=\/wp\/v2\/posts\/179","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.yanbin888.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.yanbin888.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.yanbin888.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yanbin888.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=179"}],"version-history":[{"count":7,"href":"https:\/\/www.yanbin888.com\/index.php?rest_route=\/wp\/v2\/posts\/179\/revisions"}],"predecessor-version":[{"id":246,"href":"https:\/\/www.yanbin888.com\/index.php?rest_route=\/wp\/v2\/posts\/179\/revisions\/246"}],"wp:attachment":[{"href":"https:\/\/www.yanbin888.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=179"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yanbin888.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=179"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yanbin888.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=179"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}