HarmonyOS 如何使用scheme协议拉起应用指定频道？

// A应用 
import { common, Want } from '@kit.AbilityKit'; 
 
@Entry 
@Component 
struct Scheme_App { 
  @State message: string = 'Hello World'; 
 
  build() { 
    Column() { 
      Button(this.message) 
        .id('HelloWorld') 
        .fontSize(50) 
        .fontWeight(FontWeight.Bold) 
        .onClick(()=>{ 
          let paylink = 'sohunews://pr/tab://tabName=hotChart'; 
          let want: Want = { 
            uri: paylink 
          }; 
          let context = getContext(this) as common.UIAbilityContext; 
          context.startAbility(want); 
        }) 
    } 
    .height('100%') 
    .width('100%') 
  } 
} 
 
// B应用 
 
 
onCreate(want: Want, launchParam: AbilityConstant.LaunchParam): void { 
  hilog.info(0x0000, 'testTag', '%{public}s', 'Ability onCreate'); 
  let scheme = want.uri?.toString() 
  if (scheme?.includes('hotChart')) { 
  // const context: common.UIAbilityContext = getContext(this) as common.UIAbilityContext; 
  AppStorage.setOrCreate('hotChart', 'pages/List_Sticky') 
  hilog.info(0x0000, 'testTag', '%{public}s', 'Ability onCreate'); 
} 
} 
 
 
"abilities": [ 
{ 
  "name": "EntryAbility", 
"srcEntry": "./ets/entryability/EntryAbility.ets", 
"description": "$string:EntryAbility_desc", 
"icon": "$media:layered_image", 
"label": "$string:EntryAbility_label", 
"startWindowIcon": "$media:startIcon", 
"startWindowBackground": "$color:start_window_background", 
"exported": true, 
"skills": [ 
  { 
    "entities": [ 
    "entity.system.home" 
    ], 
    "actions": [ 
    "action.system.home" 
    ], 
    "uris": [ 
    { 
      "scheme": 'sohunews://pr/tab://tabName=hotChart' 
    } 
    ] 
  } 
  ] 
} 
], 
 
// B应用被拉起跳转的页面 
@Entry 
@Component 
struct List_Sticky { 
  private timeTable: TimeTable[] = [ 
    { 
      title: '星期一', 
      projects: ['语文', '数学', '英语'] 
    }, 
    { 
      title: '星期二', 
      projects: ['物理', '化学', '生物'] 
    }, 
    { 
      title: '星期三', 
      projects: ['历史', '地理', '政治'] 
    }, 
    { 
      title: '星期四', 
      projects: ['美术', '音乐', '体育'] 
    } 
  ] 
 
  @Builder 
  itemHead(text: string) { 
    Text(text) 
      .fontSize(20) 
      .backgroundColor(0xAABBCC) 
      .width("100%") 
      .padding(10) 
  } 
 
  @Builder 
  itemFoot(num: number) { 
    Text('共' + num + "节课") 
      .fontSize(16) 
      .backgroundColor(0xAABBCC) 
      .width("100%") 
      .padding(5) 
  } 
 
  build() { 
    Column() { 
      List({ space: 20 }) { 
        ForEach(this.timeTable, (item: TimeTable) => { 
          ListItemGroup({ header: this.itemHead(item.title), footer: this.itemFoot(item.projects.length) }) { 
            ForEach(item.projects, (project: string) => { 
              ListItem() { 
                Text(project) 
                  .width("100%") 
                  .height(100) 
                  .fontSize(20) 
                  .textAlign(TextAlign.Center) 
                  .backgroundColor(0xFFFFFF) 
              } 
            }, (item: string) => item) 
          } 
          .divider({ strokeWidth: 1, color: Color.Blue }) // 每行之间的分界线 
        }) 
      } 
      .width('90%') 
      .sticky(StickyStyle.Header | StickyStyle.Footer) 
      .scrollBar(BarState.Off) 
    }.width('100%').height('100%').backgroundColor(0xDCDCDC).padding({ top: 5 }) 
  } 
} 
 
interface TimeTable { 
  title: string; 
  projects: string[]; 
}