{"id":190873,"date":"2022-03-29T20:33:49","date_gmt":"2022-03-29T12:33:49","guid":{"rendered":"https:\/\/www.idc.net\/help\/190873\/"},"modified":"2022-03-29T20:33:49","modified_gmt":"2022-03-29T12:33:49","slug":"%e5%90%8e%e6%b5%aa%e4%ba%91ios%e6%95%99%e7%a8%8b%ef%bc%9a%e7%ae%a1%e7%90%86%e7%94%a8%e6%88%b7%e7%95%8c%e9%9d%a2%e7%8a%b6%e6%80%81","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/190873\/","title":{"rendered":"\u540e\u6d6a\u4e91IOS\u6559\u7a0b\uff1a\u7ba1\u7406\u7528\u6237\u754c\u9762\u72b6\u6001"},"content":{"rendered":"

\u6982\u89c8 <\/h2>\n

\u5982\u679c\u89c6\u56fe\u9700\u8981\u6570\u636e\u6765\u786e\u5b9a\u5404\u89c6\u56fe\u95f4\u5171\u4eab\u7684\u5355\u4e00\u6570\u636e\u6e90<\/em>\uff0c\u5219\u53ef\u4ee5\u5728\u89c6\u56fe\u6700\u4e0d\u5e38\u89c1\u7684\u4e0a\u7ea7\u7ed3\u6784\u4e2d\u5c06\u6570\u636e\u5b58\u50a8\u4e3a\u72b6\u6001\u3002\u65e2\u53ef\u901a\u8fc7\u4e00\u4e2a Swift \u5c5e\u6027\u4ee5\u53ea\u8bfb\u65b9\u5f0f\u63d0\u4f9b\u8fd9\u4e2a\u6570\u636e\uff0c\u4e5f\u53ef\u4f7f\u7528\u7ed1\u5b9a\u521b\u5efa\u4e0e\u72b6\u6001\u7684\u53cc\u5411\u8fde\u63a5\u3002SwiftUI \u4f1a\u89c2\u5bdf\u6570\u636e\u7684\u53d8\u5316\uff0c\u5e76\u6839\u636e\u9700\u8981\u66f4\u65b0\u4efb\u4f55\u53d7\u5f71\u54cd\u7684\u89c6\u56fe\u3002 <\/p>\n<\/p>\n

\u8bf7\u52ff\u5c06\u72b6\u6001\u5c5e\u6027\u7528\u4e8e\u6301\u4e45\u5b58\u50a8\uff0c\u56e0\u4e3a\u72b6\u6001\u53d8\u91cf\u7684\u751f\u547d\u5468\u671f\u4e0e\u89c6\u56fe\u751f\u547d\u5468\u671f\u662f\u4e00\u6837\u7684\u3002\u5e94\u5c06\u5b83\u4eec\u7528\u4e8e\u7ba1\u7406\u4ec5\u5f71\u54cd\u7528\u6237\u754c\u9762\u7684\u77ac\u95f4\u72b6\u6001\uff0c\u4f8b\u5982\u6309\u94ae\u7684\u9ad8\u4eae\u663e\u793a\u72b6\u6001\u3001\u7b5b\u9009\u5668\u8bbe\u7f6e\u6216\u5f53\u524d\u9009\u5b9a\u7684\u5217\u8868\u9879\u76ee\u3002\u4f60\u53ef\u80fd\u8fd8\u4f1a\u53d1\u73b0\uff0c\u5728\u4f60\u51c6\u5907\u5bf9 App \u6570\u636e\u6a21\u578b\u8fdb\u884c\u66f4\u6539\u4e4b\u524d\u5236\u4f5c\u539f\u578b\u65f6\uff0c\u8fd9\u79cd\u5b58\u50a8\u5f88\u65b9\u4fbf\u3002 <\/p>\n

\u5c06\u53ef\u53d8\u503c\u4f5c\u4e3a\u72b6\u6001\u6765\u7ba1\u7406 <\/h3>\n

\u5982\u679c\u89c6\u56fe\u9700\u8981\u50a8\u5b58\u5b83\u53ef\u4ee5\u4fee\u6539\u7684\u6570\u636e\uff0c\u5e94\u901a\u8fc7 State<\/code> (\u82f1\u6587) \u5c5e\u6027\u5305\u88c5\u5668\u58f0\u660e\u4e00\u4e2a\u53d8\u91cf\u3002\u4f8b\u5982\uff0c\u4f60\u53ef\u4ee5\u5728\u64ad\u5ba2\u64ad\u653e\u5668\u89c6\u56fe\u4e2d\u521b\u5efa\u4e00\u4e2a isPlaying<\/code> Boolean\uff0c\u4ee5\u8ddf\u8e2a\u64ad\u5ba2\u4f55\u65f6\u8fd0\u884c\uff1a <\/p>\n

<\/span> struct<\/span> PlayerView<\/span>: View<\/span> <\/span>{<\/span><\/span><\/span>  @State<\/span> private<\/span> var<\/span> isPlaying: Bool<\/span> = false<\/span><\/span><\/span><\/span>  <\/span><\/span><\/span>  var<\/span> body: some<\/span> View<\/span> {<\/span><\/span><\/span>  \/\/ ...<\/span><\/span><\/span><\/span>  }<\/span><\/span><\/span> }<\/span><\/span><\/code>\n<\/pre>\n
 \u5c06\u5c5e\u6027\u6807\u8bb0\u4e3a\u72b6\u6001\u4f1a\u6307\u793a\u6846\u67b6\u7ba1\u7406\u5e95\u5c42\u5b58\u50a8\u3002\u4f60\u7684\u89c6\u56fe\u4f7f\u7528\u5c5e\u6027\u540d\u79f0\uff0c\u8bfb\u53d6\u548c\u5199\u5165\u5728\u72b6\u6001\u7684 wrappedValue<\/code> (\u82f1\u6587) \u5c5e\u6027\u4e2d\u627e\u5230\u7684\u6570\u636e\u3002\u5728\u4f60\u66f4\u6539\u503c\u65f6\uff0cSwiftUI \u4f1a\u66f4\u65b0\u89c6\u56fe\u7684\u53d7\u5f71\u54cd\u90e8\u5206\u3002\u4f8b\u5982\uff0c\u4f60\u53ef\u4ee5\u5411 PlayerView<\/code> \u6dfb\u52a0\u4e00\u4e2a\u6309\u94ae\uff0c\u5728\u8f7b\u70b9\u8be5\u6309\u94ae\u540e\u5207\u6362\u5b58\u50a8\u7684\u503c\u5e76\u6839\u636e\u5b58\u50a8\u7684\u503c\u663e\u793a\u4e0d\u540c\u7684\u56fe\u50cf\uff1a <\/p>\n
<\/span> Button<\/span>(action: {<\/span><\/span><\/span>  self<\/span>.isPlaying.toggle()<\/span><\/span><\/span> }) {<\/span><\/span><\/span>  Image<\/span>(systemName: isPlaying ? \"pause.circle\"<\/span> : \"play.circle\"<\/span>)<\/span><\/span><\/span> }<\/span><\/span><\/code>\n<\/pre>\n
 \u901a\u8fc7\u5c06\u72b6\u6001\u53d8\u91cf\u58f0\u660e\u4e3a\u79c1\u6709\u53d8\u91cf\u6765\u9650\u5236\u5b83\u4eec\u7684\u8303\u56f4\u3002\u8fd9\u786e\u4fdd\u53d8\u91cf\u5728\u58f0\u660e\u5b83\u4eec\u7684\u89c6\u56fe\u5c42\u6b21\u7ed3\u6784\u4e2d\u4fdd\u6301\u5c01\u88c5\u72b6\u6001\u3002 <\/p>\n
 \u58f0\u660e Swift \u5c5e\u6027\u4ee5\u5b58\u50a8\u4e0d\u53ef\u53d8\u503c <\/h3>\n
 \u82e5\u8981\u4e3a\u89c6\u56fe\u63d0\u4f9b\u5176\u4e0d\u4fee\u6539\u7684\u6570\u636e\uff0c\u8bf7\u58f0\u660e\u4e00\u4e2a\u6807\u51c6 Swift \u5c5e\u6027\u3002\u4f8b\u5982\uff0c\u4f60\u53ef\u4ee5\u6269\u5c55\u64ad\u5ba2\u64ad\u653e\u5668\uff0c\u4ee5\u589e\u52a0\u4e00\u4e2a\u8f93\u5165\u7ed3\u6784\uff0c\u7528\u4e8e\u5305\u542b\u4ee3\u8868\u5355\u96c6\u6807\u9898\u548c\u8282\u76ee\u540d\u79f0\u7684\u5b57\u7b26\u4e32\uff1a <\/p>\n
<\/span> struct<\/span> PlayerView<\/span>: View<\/span> <\/span>{<\/span><\/span><\/span>  let<\/span> episode: Episode<\/span> \/\/ The queued episode.<\/span><\/span><\/span><\/span>  @State<\/span> private<\/span> var<\/span> isPlaying: Bool<\/span> = false<\/span><\/span><\/span><\/span>  <\/span><\/span><\/span>  var<\/span> body: some<\/span> View<\/span> {<\/span><\/span><\/span>  VStack<\/span> {<\/span><\/span><\/span>  \/\/ Display information about the episode.<\/span><\/span><\/span><\/span>  Text<\/span>(episode.title)<\/span><\/span><\/span>  Text<\/span>(episode.showTitle)<\/span><\/span><\/span>  <\/span><\/span><\/span>  Button<\/span>(action: {<\/span><\/span><\/span>  self<\/span>.isPlaying.toggle()<\/span><\/span><\/span>  }) {<\/span><\/span><\/span>  Image<\/span>(systemName: isPlaying ? \"pause.circle\"<\/span> : \"play.circle\"<\/span>)<\/span><\/span><\/span>  }<\/span><\/span><\/span>  }<\/span><\/span><\/span>  }<\/span><\/span><\/span> }<\/span><\/span><\/code>\n<\/pre>\n
 \u5c3d\u7ba1\u5355\u96c6\u5c5e\u6027\u7684\u503c\u5bf9\u4e8e PlayerView<\/code> \u662f\u4e00\u4e2a\u5e38\u91cf\uff0c\u4f46\u5728\u8fd9\u4e2a\u89c6\u56fe\u7684\u7236\u89c6\u56fe\u4e2d\uff0c\u5b83\u4e0d\u4e00\u5b9a\u8981\u662f\u5e38\u91cf\u3002\u5f53\u7528\u6237\u5728\u7236\u9879\u4e2d\u9009\u62e9\u53e6\u4e00\u4e2a\u5355\u96c6\u65f6\uff0cSwiftUI \u4f1a\u68c0\u6d4b\u5230\u72b6\u6001\u53d8\u5316\u5e76\u4f7f\u7528\u4e00\u4e2a\u65b0\u8f93\u5165\u6765\u91cd\u65b0\u521b\u5efa PlayerView<\/code>\u3002 <\/p>\n
 \u901a\u8fc7\u7ed1\u5b9a\u5171\u4eab\u72b6\u6001\u8bbf\u95ee <\/h3>\n
 \u5982\u679c\u89c6\u56fe\u9700\u8981\u4e0e\u4e00\u4e2a\u5b50\u89c6\u56fe\u5171\u4eab\u72b6\u6001\u7684\u63a7\u4ef6\uff0c\u5e94\u5728\u5e26\u6709 Binding<\/code> (\u82f1\u6587) \u5c5e\u6027\u5305\u88c5\u5668\u7684\u5b50\u9879\u4e2d\u58f0\u660e\u4e00\u4e2a\u5c5e\u6027\u3002\u7ed1\u5b9a\u8868\u793a\u5bf9\u73b0\u6709\u5b58\u50a8\u7684\u5f15\u7528\uff0c\u4ece\u800c\u4fdd\u7559\u5e95\u5c42\u6570\u636e\u7684\u5355\u4e00\u6570\u636e\u6e90\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4f60\u5c06\u64ad\u5ba2\u64ad\u653e\u5668\u89c6\u56fe\u7684\u6309\u94ae\u91cd\u6784\u6210\u4e00\u4e2a\u540d\u4e3a PlayButton<\/code> \u7684\u5b50\u89c6\u56fe\uff0c\u4f60\u53ef\u4ee5\u7ed9\u5b83\u63d0\u4f9b\u4e00\u4e2a\u4e0e isPlaying<\/code> \u5c5e\u6027\u7684\u7ed1\u5b9a\uff1a <\/p>\n
<\/span> struct<\/span> PlayButton<\/span>: View<\/span> <\/span>{<\/span><\/span><\/span>  @Binding<\/span> var<\/span> isPlaying: Bool<\/span><\/span><\/span><\/span>  <\/span><\/span><\/span>  var<\/span> body: some<\/span> View<\/span> {<\/span><\/span><\/span>  Button<\/span>(action: {<\/span><\/span><\/span>  self<\/span>.isPlaying.toggle()<\/span><\/span><\/span>  }) {<\/span><\/span><\/span>  Image<\/span>(systemName: isPlaying ? \"pause.circle\"<\/span> : \"play.circle\"<\/span>)<\/span><\/span><\/span>  }<\/span><\/span><\/span>  }<\/span><\/span><\/span> }<\/span><\/span><\/code>\n<\/pre>\n
 \u5982\u4e0a\u6240\u793a\uff0c\u4f60\u53ef\u4ee5\u901a\u8fc7\u76f4\u63a5\u5f15\u7528\u5c5e\u6027\u6765\u8bfb\u53d6\u548c\u5199\u5165\u7ed1\u5b9a\u5305\u88c5\u7684\u503c\uff0c\u8fd9\u4e00\u70b9\u4e0e\u72b6\u6001\u5c5e\u6027\u4e00\u6837\u3002\u4f46\u662f\u4e0e\u72b6\u6001\u5c5e\u6027\u4e0d\u540c\u7684\u662f\uff0c\u7ed1\u5b9a\u6ca1\u6709\u81ea\u5df1\u7684\u5b58\u50a8\uff0c\u800c\u662f\u5f15\u7528\u4e00\u4e2a\u5b58\u50a8\u5728\u5176\u4ed6\u5730\u65b9\u7684\u72b6\u6001\u5c5e\u6027\uff0c\u5e76\u63d0\u4f9b\u4e0e\u8be5\u5b58\u50a8\u7684\u53cc\u5411\u8fde\u63a5\u3002 <\/p>\n
 \u5f53\u4f60\u5b9e\u4f8b\u5316 PlayButton<\/code> \u65f6\uff0c\u53ef\u901a\u8fc7\u6dfb\u52a0\u4e00\u4e2a\u7f8e\u5143\u7b26\u53f7 ($<\/code>) \u524d\u7f00\uff0c\u63d0\u4f9b\u4e0e\u7236\u89c6\u56fe\u4e2d\u58f0\u660e\u7684\u76f8\u5e94\u72b6\u6001\u53d8\u91cf\u7684\u7ed1\u5b9a\uff1a <\/p>\n
<\/span> struct<\/span> PlayerView<\/span>: View<\/span> <\/span>{<\/span><\/span><\/span>  var<\/span> episode: Episode<\/span><\/span><\/span><\/span>  @State<\/span> private<\/span> var<\/span> isPlaying: Bool<\/span> = false<\/span><\/span><\/span><\/span>  <\/span><\/span><\/span>  var<\/span> body: some<\/span> View<\/span> {<\/span><\/span><\/span>  VStack<\/span> {<\/span><\/span><\/span>  Text<\/span>(episode.title)<\/span><\/span><\/span>  Text<\/span>(episode.showTitle)<\/span><\/span><\/span>  PlayButton<\/span>(isPlaying: $isPlaying) \/\/ Pass a binding.<\/span><\/span><\/span><\/span>  }<\/span><\/span><\/span>  }<\/span><\/span><\/span> }<\/span><\/span><\/code>\n<\/pre>\n
 $<\/code> \u524d\u7f00\u8981\u6c42\u4e3a\u5b83\u7684 projectedValue<\/code> (\u82f1\u6587) \u63d0\u4f9b\u4e00\u4e2a\u5305\u88c5\u7684\u5c5e\u6027\uff0c\u8fd9\u5bf9\u72b6\u6001\u800c\u8a00\uff0c\u5c31\u662f\u4e0e\u5e95\u5c42\u5b58\u50a8\u7684\u7ed1\u5b9a\u3002\u540c\u6837\uff0c\u4f60\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528 $<\/code> \u524d\u7f00\u7684\u7ed1\u5b9a\u83b7\u5f97\u7ed1\u5b9a\uff0c\u4ece\u800c\u8ba9\u4f60\u53ef\u4ee5\u5728\u89c6\u56fe\u5c42\u6b21\u7ed3\u6784\u7684\u4efb\u610f\u6570\u91cf\u5c42\u7ea7\u95f4\u4f20\u9012\u7ed1\u5b9a\u3002 <\/p>\n
 \u4f60\u8fd8\u53ef\u4ee5\u83b7\u5f97\u4e0e\u72b6\u6001\u53d8\u91cf\u4e2d\u9650\u5b9a\u8303\u56f4\u7684\u503c\u7684\u7ed1\u5b9a\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4f60\u5728\u64ad\u653e\u5668\u7684\u7236\u89c6\u56fe\u4e2d\u5c06 episode<\/code> \u58f0\u660e\u4e3a\u72b6\u6001\u53d8\u91cf\uff0c\u5e76\u4e14\u5355\u96c6\u7ed3\u6784\u8fd8\u5305\u542b\u4e00\u4e2a\u4f60\u60f3\u8981\u901a\u8fc7\u5207\u6362\u63a7\u5236\u7684 isFavorite<\/code> Boolean\uff0c\u90a3\u4e48\uff0c\u4f60\u53ef\u4ee5\u5f15\u7528 $episode.isFavorite<\/code> \u6765\u83b7\u5f97\u4e0e\u5355\u96c6\u7684\u4e2a\u4eba\u6536\u85cf\u72b6\u6001\u7684\u7ed1\u5b9a\uff1a <\/p>\n
<\/span> struct<\/span> Podcaster<\/span>: View<\/span> <\/span>{<\/span><\/span><\/span>  @State<\/span> private<\/span> var<\/span> episode = Episode<\/span>(title: \"Some Episode\"<\/span>,<\/span><\/span><\/span>  showTitle: \"Great Show\"<\/span>,<\/span><\/span><\/span>  isFavorite: false<\/span>)<\/span><\/span><\/span>  var<\/span> body: some<\/span> View<\/span> {<\/span><\/span><\/span>  VStack<\/span> {<\/span><\/span><\/span>  Toggle<\/span>(\"Favorite\"<\/span>, isOn: $episode.isFavorite) \/\/ Bind to the Boolean.<\/span><\/span><\/span><\/span>  PlayerView<\/span>(episode: episode)<\/span><\/span><\/span>  }<\/span><\/span><\/span>  }<\/span><\/span><\/span> }<\/span><\/span><\/code>\n<\/pre>\n
 \u4e3a\u72b6\u6001\u8fc7\u6e21\u6dfb\u52a0\u52a8\u753b\u6548\u679c <\/h3>\n
 \u5f53\u89c6\u56fe\u72b6\u6001\u53d1\u751f\u6539\u53d8\u65f6\uff0cSwiftUI \u4f1a\u7acb\u5373\u66f4\u65b0\u53d7\u5f71\u54cd\u7684\u89c6\u56fe\u3002\u5982\u679c\u4f60\u9700\u8981\u5b9e\u73b0\u987a\u7545\u7684\u89c6\u89c9\u8fc7\u6e21\uff0c\u53ef\u4ee5\u5c06\u89e6\u53d1\u8fc7\u6e21\u7684\u72b6\u6001\u66f4\u6539\u5305\u88c5\u5728\u5bf9 withAnimation(_:_:)<\/code> (\u82f1\u6587) \u51fd\u6570\u7684\u8c03\u7528\u4e2d\uff0c\u4ee5\u6307\u793a SwiftUI \u4e3a\u5b83\u4eec\u6dfb\u52a0\u52a8\u753b\u6548\u679c\u3002\u4f8b\u5982\uff0c\u4f60\u53ef\u4ee5\u4e3a\u7531 isPlaying<\/code> Boolean \u63a7\u5236\u7684\u66f4\u6539\u6dfb\u52a0\u52a8\u753b\u6548\u679c\uff1a <\/p>\n
<\/span> withAnimation(.easeInOut(duration: 1<\/span>)) {<\/span><\/span><\/span>  self<\/span>.isPlaying.toggle()<\/span><\/span><\/span> }<\/span><\/span><\/code>\n<\/pre>\n
 \u901a\u8fc7\u66f4\u6539\u52a8\u753b\u51fd\u6570\u7ed3\u5c3e\u95ed\u5305\u4e2d\u7684 isPlaying<\/code>\uff0c\u53ef\u6307\u793a SwiftUI \u4e3a\u4f9d\u8d56\u4e8e\u5305\u88c5\u503c\u7684\u4e00\u5207\u5185\u5bb9\u6dfb\u52a0\u52a8\u753b\u6548\u679c\uff0c\u4f8b\u5982\uff0c\u6309\u94ae\u56fe\u50cf\u4e0a\u7684\u7f29\u653e\u7279\u6548\uff1a <\/p>\n
<\/span> Image<\/span>(systemName: isPlaying ? \"pause.circle\"<\/span> : \"play.circle\"<\/span>)<\/span><\/span><\/span>  .scaleEffect(isPlaying ? 1<\/span> : 1.5<\/span>)<\/span><\/span><\/code>\n<\/pre>\n
 SwiftUI \u4f1a\u4f7f\u7528\u4f60\u6307\u5b9a\u7684\u66f2\u7ebf\u548c\u6301\u7eed\u65f6\u95f4\uff0c\u5982\u679c\u4f60\u672a\u63d0\u4f9b\u5219\u4f7f\u7528\u5408\u7406\u7684\u9ed8\u8ba4\u503c\uff0c\u5728\u4e00\u6bb5\u65f6\u95f4\u5185\u5728\u7ed9\u5b9a\u7684 1<\/code> \u548c 1.5<\/code> \u503c\u4e4b\u95f4\u8fc7\u6e21\u7f29\u653e\u7279\u6548\u8f93\u5165\u3002\u53e6\u4e00\u65b9\u9762\uff0c\u56fe\u50cf\u5185\u5bb9\u4e0d\u4f1a\u53d7\u5230\u52a8\u753b\u7684\u5f71\u54cd\uff0c\u5373\u4f7f\u540c\u4e00\u4e2a Boolean \u89c4\u5b9a\u8981\u663e\u793a\u54ea\u4e2a\u7cfb\u7edf\u56fe\u50cf\u4e5f\u662f\u5982\u6b64\u3002\u90a3\u662f\u56e0\u4e3a SwiftUI \u65e0\u6cd5\u4ee5\u6709\u610f\u4e49\u7684\u65b9\u5f0f\u5728\u4e24\u4e2a\u5b57\u7b26\u4e32 pause.circle<\/code> \u548c play.circle<\/code> \u4e4b\u95f4\u9010\u6b65\u8fc7\u6e21\u3002 <\/p>\n
 \u4f60\u53ef\u4ee5\u5411\u72b6\u6001\u5c5e\u6027\u6dfb\u52a0\u52a8\u753b\uff0c\u6216\u4e0e\u4e0a\u8ff0\u793a\u4f8b\u4e00\u6837\uff0c\u5411\u7ed1\u5b9a\u6dfb\u52a0\u52a8\u753b\u3002\u65e0\u8bba\u662f\u54ea\u4e00\u79cd\u65b9\u5f0f\uff0c\u5728\u5e95\u5c42\u5b58\u50a8\u7684\u503c\u53d1\u751f\u53d8\u5316\u65f6\uff0cSwiftUI \u90fd\u4f1a\u4e3a\u53d1\u751f\u7684\u4efb\u4f55\u89c6\u56fe\u53d8\u5316\u6dfb\u52a0\u52a8\u753b\u6548\u679c\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4f60\u5728\u52a8\u753b\u5757\u4f4d\u7f6e\u4e0a\u65b9\u7684\u67d0\u4e2a\u89c6\u56fe\u5c42\u6b21\u7ed3\u6784\u5c42\u7ea7\u5411 PlayerView<\/code> \u6dfb\u52a0\u80cc\u666f\u8272\uff0cSwiftUI \u540c\u6837\u4f1a\u4e3a\u6b64\u6dfb\u52a0\u52a8\u753b\u6548\u679c\uff1a <\/p>\n
<\/span> VStack<\/span> {<\/span><\/span><\/span>  Text<\/span>(episode.title)<\/span><\/span><\/span>  Text<\/span>(episode.showTitle)<\/span><\/span><\/span>  PlayButton<\/span>(isPlaying: $isPlaying)<\/span><\/span><\/span> }<\/span><\/span><\/span> .background(isPlaying ? Color<\/span>.green : Color<\/span>.red) \/\/ Transitions with animation.<\/span><\/span><\/span><\/code>\n<\/pre>\n
 \u5982\u679c\u4f60\u60f3\u5c06\u52a8\u753b\u5e94\u7528\u4e8e\u7279\u5b9a\u7684\u89c6\u56fe\uff0c\u800c\u4e0d\u662f\u72b6\u6001\u53d8\u5316\u89e6\u53d1\u7684\u6240\u6709\u89c6\u56fe\uff0c\u8bf7\u6539\u7528 animation(_:)<\/code> (\u82f1\u6587) \u89c6\u56fe\u4fee\u9970\u7b26\u3002 <\/p>\n","protected":false},"excerpt":{"rendered":"
\u6982\u89c8 \u5982\u679c\u89c6\u56fe\u9700\u8981\u6570\u636e\u6765\u786e\u5b9a\u5404\u89c6\u56fe\u95f4\u5171\u4eab\u7684\u5355\u4e00\u6570\u636e\u6e90\uff0c\u5219\u53ef\u4ee5\u5728\u89c6\u56fe\u6700\u4e0d\u5e38\u89c1\u7684\u4e0a\u7ea7\u7ed3\u6784\u4e2d\u5c06\u6570\u636e\u5b58\u50a8\u4e3a\u72b6\u6001\u3002\u65e2\u53ef\u901a […]<\/p>\n","protected":false},"author":1,"featured_media":190874,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[189686],"tags":[],"class_list":["post-190873","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ios"],"_links":{"self":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/190873","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/comments?post=190873"}],"version-history":[{"count":0,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/190873\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media\/190874"}],"wp:attachment":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media?parent=190873"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/categories?post=190873"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/tags?post=190873"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}