单向双向的图解可以在单向数据传递中查看https:harmonyos.51cto.composts4824展示MainAbilitySlice的具体代码javapublicclassMainAbilitySliceextendsAbilitySlice{HiLogLabellabelnewHiLogLabel(HiLog.LOGAPP,0xFFFFF,"CHXI");OverridepublicvoidonStart(Intentintent){super.setUIContent(ResourceTable.Layoutabilitymain);Buttonbutton(Button)findComponentById(ResourceTable.Idbutton);button.setClickedListener(newCom...