如何在本应用内查看其他应用的信息？

let link = 'abab://' 
let canTouch = bundleManager.canOpenLink(link); 
if(canTouch){ 
  let want: Want = { 
    uri: link 
  }; 
  let context = getContext(this) as common.UIAbilityContext; 
  context.startAbility(want, (error: BusinessError) => { 
    console.error(`error.code = ${error.code}`); 
  }); 
}