1、需要在 build.gradle 下加上

 dataBinding {enabled = true}

2、最外层布局首先要包上 data标签

<data><variablename="bj"type="com.example.xsapp.ui.model.BjQueryModel" />
</data>

BjQueryModel是要绑定到页面的实体类

3、实体类 ，可以在后面设置访问webApi的方法，并更新数据到实体类的属性

class BjQueryModel {val barcode: ObservableField<String> = ObservableField("")val bjbh = ObservableField<String>()val bjzt = ObservableField<String>()val bjmc = ObservableField<String>()val bjhs = ObservableField<String>()val ddbh = ObservableField<String>()val pcbh = ObservableField<String>()val kwbh = ObservableField<String>()val bzt = ObservableField<String>()val ddzt = ObservableField<String>()val bjsize = ObservableField<String>()val bbh = ObservableField<String>()val dkbs = ObservableField<String>()fun clearData() {bjbh.set("")bjzt.set("")ddbh.set("")pcbh.set("")bjmc.set("")bjhs.set("")kwbh.set("")bzt.set("")ddzt.set("")bjsize.set("")bbh.set("")dkbs.set("")}val OnEditorAction = object : TextView.OnEditorActionListener {override fun onEditorAction(v: TextView?, actionId: Int, event: KeyEvent?): Boolean {if (actionId == 6 || event?.action == 0 && event?.keyCode == KeyEvent.KEYCODE_ENTER) {//Log.e("Retrofit", "调用API，路径是：${ParamConfig.webApi}")barcode.get().isNullOrEmpty().let {when (it) {true -> {Toast.makeText(v?.context, "请输入板件条码", Toast.LENGTH_SHORT).show()}else -> {clearData()//调用API-api(v?.context)}}}}return true}}
}

4、调用WebApi : https://blog.csdn.net/xuzishe/article/details/122691673

5、页面绑定

 private val bjQueryModel = BjQueryModel()private lateinit var binding: FragmentBjQueryBindingoverride fun onCreateView(inflater: LayoutInflater,container: ViewGroup?,savedInstanceState: Bundle?): View {binding = DataBindingUtil.inflate<FragmentBjQueryBinding>(inflater,R.layout.fragment_bj_query,container,false)binding.txtBjcxBarcode.setOnEditorActionListener(bjQueryModel.OnEditorAction)binding.bj = bjQueryModelreturn binding.root}

binding.txtBjcxBarcode.setOnEditorActionListener(bjQueryModel.OnEditorAction)

这个是文本输入框绑定事件

这样就完成了