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背景 Fragment 希望不用那么多代码在Fragment中。所以推出了ViewModel加载数据的方式。更加高度的解耦

生命周期

使用

package com.anguomob.love.activity.ui.myimport androidx.lifecycle.LiveDataimport androidx.lifecycle.MutableLiveDataimport androidx.lifecycle.ViewModelimport com.anguomob.love.bean.UserInfoimport com.anguomob.love.common.PassportManagerimport com.anguomob.love.net.usecase.PassportUseCaseimport io.reactivex.disposables.CompositeDisposableclass MyViewModel : ViewModel() {    override fun onCleared() {        super.onCleared()    }    private val _text = MutableLiveData
   
    ()    private val _error = MutableLiveData
    
     ()    var dataList: LiveData
     
       = _text    var error: LiveData
      
        = _error    val mDisposable: CompositeDisposable = CompositeDisposable()    init {        val subscribe =            PassportUseCase().refreshUserInfo(PassportManager.getInstance().getUid()).subscribe({                it?.let {                    _text.value=it;                }            }, {                _error.value=it            })        mDisposable.add(subscribe)    }}
      
     
    
   

创建 ViewModel 类 并直接加载数据

在Fragment中需要的地方

initData里面把代码用上

private lateinit var dashboardViewModel: MyViewModel

dashboardViewModel =            ViewModelProvider(this).get(MyViewModel::class.java)        dashboardViewModel.dataList.observe(viewLifecycleOwner, Observer {            it?.let {                PassportManager.getInstance().saveUserInfo(it)                Glide.with(this)                    .load(it.avatar)                    .placeholder(getDefaultPlace(it.sex))                    .transition(DrawableTransitionOptions.withCrossFade())                    .into(mIvFDUpload)                mTvFdNickName.text = it.nick_name;            }        })        dashboardViewModel.error.observe(viewLifecycleOwner, Observer {            it?.let {                TipsToast.showTips(activity, ApiErrorCodeDesc.getErrorMsg(it))            }        })