{"id":1743,"date":"2024-04-07T10:34:49","date_gmt":"2024-04-07T02:34:49","guid":{"rendered":"https:\/\/fireinsect.top\/?p=1743"},"modified":"2024-04-07T10:34:49","modified_gmt":"2024-04-07T02:34:49","slug":"harmonyos%e5%bc%80%e5%8f%91%e5%ad%a6%e4%b9%a0%ef%bc%884%ef%bc%89-%e7%bb%84%e4%bb%b6%e7%8a%b6%e6%80%81%e7%ae%a1%e7%90%86","status":"publish","type":"post","link":"https:\/\/fireinsect.top\/index.php\/2024\/04\/07\/harmonyos%e5%bc%80%e5%8f%91%e5%ad%a6%e4%b9%a0%ef%bc%884%ef%bc%89-%e7%bb%84%e4%bb%b6%e7%8a%b6%e6%80%81%e7%ae%a1%e7%90%86\/","title":{"rendered":"HarmonyOS\u5f00\u53d1\u5b66\u4e60\uff084\uff09\u2013\u7ec4\u4ef6\u72b6\u6001\u7ba1\u7406"},"content":{"rendered":"\n

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\u573a\u666f<\/strong><\/th>\u88c5\u9970\u5668<\/strong><\/th><\/tr><\/thead>
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\u7ec4\u4ef6\u5185\u7684\u72b6\u6001\u7ba1\u7406\uff1a@State<\/h2>\n\n\n\n

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@Component\nexport default struct TargetListItem {\n  @State isExpanded: boolean = false;\n  ...\n\n  build() {\n    ...\n      Column() {\n        ...\n        if (this.isExpanded) {\n          Blank()\n          ProgressEditPanel(...)\n        }\n      }\n      .height(this.isExpanded ? $r('app.float.expanded_item_height')                  \n      : $r('app.float.list_item_height'))\n      .onClick(() => {\n        ...\n             this.isExpanded = !this.isExpanded;\n        ...\n       })\n    ...\n  }\n}<\/code><\/pre>\n\n\n\n
\u5f53\u6211\u4eec\u70b9\u51fb\u5217\u8868\u9879\uff0c\u4f7f\u5f97isExpanded\u53d1\u9001\u53d8\u5316\u65f6\uff0c\u4f1a\u81ea\u52a8\u66f4\u65b0\u7ec4\u4ef6\u72b6\u6001\u3002<\/p>\n\n\n\n
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\"\"<\/figure>\n<\/div>\n\n\n\n
\u5982\u4e0a\u56fe\uff0c\u6211\u4eec\u9700\u8981\u5b9e\u73b0\u7f16\u8f91\u6309\u94ae\uff0c\u5b8c\u6210\u8fdb\u5165\u7f16\u8f91\u72b6\u6001\u7684\u65b9\u6cd5\uff0c\u5e76\u5b9e\u73b0\u70b9\u51fb\u53d6\u6d88\u9000\u51fa\u7f16\u8f91\u72b6\u6001\u3002<\/p>\n\n\n\n
@Component\nexport default struct TargetList {\n  @State isEditMode: boolean = false;\n  ...\n  build() {\n    Column() {\n      Row() {\n        ...\n          if (this.isEditMode) {\n            Text($r('app.string.cancel_button'))\n              .onClick(() => {\n                this.isEditMode = false;\n                ...\n               })\n               ...\n            Text($r('app.string.select_all_button'))...\n            Checkbox()...\n          } else {\n            Text($r('app.string.edit_button'))\n              .onClick(() => {\n                this.isEditMode = true;\n              })\n              ...\n          }\n        ...\n      }\n      ...\n      List({ space: CommonConstants.LIST_SPACE }) {\n        ForEach(this.targetData, (item: TaskItemBean, index: number) => {\n          ListItem() {\n            TargetListItem({\n              isEditMode: this.isEditMode,\n              ...\n            })\n          }\n        }, (item, index) => JSON.stringify(item) + index)\n      }\n      ...\n      if (this.isEditMode) {\n        Button($r('app.string.delete_button'))\n      } else {\n        Button($r('app.string.add_task'))\n      }\n    }\n    ...\n  }\n}<\/code><\/pre>\n\n\n\n
\u5728\u5b50\u7ec4\u4ef6TargetListItem\u4e2d\uff0c\u4f7f\u7528@Prop\u4fee\u9970\u5b50\u7ec4\u4ef6\u7684isEditMode\u53d8\u91cf\uff0c\u5b9a\u4e49\u5b50\u7ec4\u4ef6\u7684\u7f16\u8f91\u6a21\u5f0f\u72b6\u6001\u3002<\/p>\n\n\n\n
@Component\nexport default struct TargetListItem {\n   @Prop isEditMode: boolean;\n   ...\n       Column() {\n        ...\n       }\n       .padding({\n        ...\n        right: this.isEditMode ? $r('app.float.list_edit_padding') \n               : $r('app.float.list_padding')\n       })\n       ...\n\n       if (this.isEditMode) {\n        Row() {\n           Checkbox()...\n        }\n       }\n  ...\n}<\/code><\/pre>\n\n\n\n
<\/div>\n\n\n\n
\u4e0e\u7236\u7ec4\u4ef6\u53cc\u5411\u540c\u6b65\u72b6\u6001\uff1a@Link<\/h2>\n\n\n\n
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\u5728\u5b50\u76ee\u6807\u5217\u8868\u4e2d\uff0c\u6bcf\u4e2a\u5217\u8868\u9879\u90fd\u6709\u5176\u4f4d\u7f6e\u7d22\u5f15\u503cindex\u5c5e\u6027\uff0c\u8868\u793a\u76ee\u6807\u9879\u5728\u5217\u8868\u4e2d\u7684\u4f4d\u7f6e\u3002index\u4ece0\u5f00\u59cb\uff0c\u5373\u7b2c\u4e00\u4e2a\u76ee\u6807\u9879\u7684\u7d22\u5f15\u503c\u4e3a0\uff0c\u7b2c\u4e8c\u4e2a\u76ee\u6807\u9879\u7684\u7d22\u5f15\u503c\u4e3a1\uff0c\u4ee5\u6b64\u7c7b\u63a8\u3002\u6b64\u5916\uff0cclickIndex\u7528\u6765\u8bb0\u5f55\u88ab\u70b9\u51fb\u7684\u76ee\u6807\u9879\u7d22\u5f15\u3002\u5f53\u70b9\u51fb\u76ee\u6807\u4e00\u65f6\uff0cclickIndex\u4e3a0\uff0c\u70b9\u51fb\u76ee\u6807\u4e09\u65f6\uff0cclickIndex\u4e3a2\u3002<\/p>\n\n\n\n
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@Component\nexport default struct TargetList {\n  @State clickIndex: number = CommonConstants.DEFAULT_CLICK_INDEX;\n  ...\n             TargetListItem({\n               clickIndex: $clickIndex,\n              ...\n             })\n  ...\n}<\/code><\/pre>\n\n\n\n
@Component\nexport default struct TargetListItem {\n  @Link @Watch('onClickIndexChanged') clickIndex: number;\n  @State isExpanded: boolean = false\n  ...\n\n  onClickIndexChanged() {\n    if (this.clickIndex != this.index) {\n      this.isExpanded = false;\n    }\n  }\n\n  build() {\n    ...\n       Column() {\n        ...\n       }\n       .onClick(() => {\n        ...\n           this.clickIndex = this.index;\n        ...\n       })\n    ...\n  }\n}<\/code><\/pre>\n\n\n\n
\u6211\u4eec\u7ed9TargetListItem\u7684\u4e2d\u7684clickIndex\u72b6\u6001\u52a0\u4e0a@Watch(“onClickIndexChanged”)\u3002\u8fd9\u8868\u793a\u9700\u8981\u76d1\u542cclickIndex\u72b6\u6001\u7684\u53d8\u5316\u3002\u5f53clickIndex\u72b6\u6001\u53d8\u5316\u65f6\uff0c\u5c06\u89e6\u53d1onClickIndexChanged\u56de\u8c03<\/p>\n\n\n\n
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@Watch\u662f\u6846\u67b6\u4e2d\u76d1\u542c\u72b6\u6001\u53d8\u5316\u7684\u88c5\u9970\u5668\uff0c@Watch\u4fee\u9970\u7684\u72b6\u6001\uff0c\u5f53\u72b6\u6001\u53d1\u751f\u53d8\u5316\u65f6\uff0c\u4f1a\u89e6\u53d1\u58f0\u660e\u65f6\u5b9a\u4e49\u7684\u56de\u8c03<\/p>\n<\/blockquote>\n\n\n\n
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\u8de8\u7ec4\u4ef6\u5c42\u7ea7\u53cc\u5411\u540c\u6b65\u72b6\u6001\uff1a@Provide\u548c@Consume<\/h2>\n\n\n\n
\u8de8\u7ec4\u4ef6\u5c42\u7ea7\u53cc\u5411\u540c\u6b65\u72b6\u6001\u662f\u6307@Provide\u4fee\u9970\u7684\u72b6\u6001\u53d8\u91cf\u81ea\u52a8\u5bf9\u63d0\u4f9b\u8005\u7ec4\u4ef6\u7684\u6240\u6709\u540e\u4ee3\u7ec4\u4ef6\u53ef\u7528\uff0c\u540e\u4ee3\u7ec4\u4ef6\u901a\u8fc7\u4f7f\u7528@Consume\u88c5\u9970\u7684\u53d8\u91cf\u6765\u83b7\u5f97\u5bf9\u63d0\u4f9b\u7684\u72b6\u6001\u53d8\u91cf\u7684\u8bbf\u95ee\u3002@Provide\u4f5c\u4e3a\u6570\u636e\u7684\u63d0\u4f9b\u65b9\uff0c\u53ef\u4ee5\u66f4\u65b0\u5176\u5b50\u5b59\u8282\u70b9\u7684\u6570\u636e\uff0c\u5e76\u89e6\u53d1\u9875\u9762\u6e32\u67d3\u3002@Consume\u5728\u611f\u77e5\u5230@Provide\u6570\u636e\u7684\u66f4\u65b0\u540e\uff0c\u4f1a\u89e6\u53d1\u5f53\u524d\u81ea\u5b9a\u4e49\u7ec4\u4ef6\u7684\u91cd\u65b0\u6e32\u67d3\u3002<\/p>\n\n\n\n
@Provide\u548c@Consume\u53ef\u4ee5\u901a\u8fc7\u76f8\u540c\u7684\u53d8\u91cf\u540d\u6216\u8005\u76f8\u540c\u7684\u53d8\u91cf\u522b\u540d\u7ed1\u5b9a\uff0c\u53d8\u91cf\u7c7b\u578b\u5fc5\u987b\u76f8\u540c\u3002<\/p>\n\n\n\n
\/\/ \u901a\u8fc7\u76f8\u540c\u7684\u53d8\u91cf\u540d\u7ed1\u5b9a\n@Provide a: number = 0;\n@Consume a: number;\n\n\/\/ \u901a\u8fc7\u76f8\u540c\u7684\u53d8\u91cf\u522b\u540d\u7ed1\u5b9a\n@Provide('a') b: number = 0;\n@Consume('a') c: number;<\/code><\/pre>\n\n\n\n
@Provide\u548c@Consume\u901a\u8fc7\u76f8\u540c\u7684\u53d8\u91cf\u540d\u6216\u8005\u76f8\u540c\u7684\u53d8\u91cf\u522b\u540d\u7ed1\u5b9a\u65f6\uff0c@Provide\u4fee\u9970\u7684\u53d8\u91cf\u548c@Consume\u4fee\u9970\u7684\u53d8\u91cf\u662f\u4e00\u5bf9\u591a\u7684\u5173\u7cfb\u3002\u4e0d\u5141\u8bb8\u5728\u540c\u4e00\u4e2a\u81ea\u5b9a\u4e49\u7ec4\u4ef6\u5185\uff0c\u5305\u62ec\u5176\u5b50\u7ec4\u4ef6\u4e2d\u58f0\u660e\u591a\u4e2a\u540c\u540d\u6216\u8005\u540c\u522b\u540d\u7684@Provide\u88c5\u9970\u7684\u53d8\u91cf\u3002<\/p>\n\n\n\n
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