val musicViewModel by lazy { getLiveDataViewModel(MusicViewModel::class.java) }

// fork的目的就是生成对应的MutableLiveData对象
musicViewModel.forkForArrayList(SearchMusic.Item::class.java)
    .observe(
        owner = this,
        onStart = {/*开始*/},
        onCancel = {/*取消，当activity销毁时，准确的说是musicViewModel的onCleared()触发时*/},
        onFailed = { _, message ->
            // 失败
            false
        }
        ,
        onSuccess = { result ->
            //成功
        }
     )

// 搜索音乐
musicViewModel.searchMusic(name)

interface MusicApi {
    @GET("/searchMusic")
    fun searchMusic(@Query("name")name:String):Observable<CommonResponse<ArrayList<SearchMusic.Item>>>
}

class MusicViewModel : AbsLiveDataViewModel() {

    fun searchMusic(name: String) {
        launchRemoteResp(MusicServiceCore) {
            searchMusic(name)
        }.commitForArrayList()

    }
}