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March 18, 2020 09:45
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Gist 3 - Android Example
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| object DataApiService { | |
| fun loadData(): Observable<DataModel> { | |
| return Observable.just(DataModel("data_model")) | |
| } | |
| fun loadAnoteherData(): Observable<AnotherDataModel> { | |
| return Observable.just(AnotherDataModel("another_data_model")) | |
| } | |
| } |
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| data class DataModel(val id: String) | |
| data class AnotherDataModel(val id: String) | |
| data class FullDataModel(val data: DataModel, val anotherData: AnotherDataModel) |
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| object DataRepository { | |
| private var data: FullDataModel? = null | |
| fun saveFullData(data: FullDataModel): Completable { | |
| return Completable.fromAction { this.data = data } | |
| } | |
| } |
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| class LoadingDataPresenter(private val view: LoadingDataView) { | |
| private val api: DataApiService = DataApiService | |
| fun loadData() { | |
| updateLabel(R.string.loading_data) | |
| getFullData() | |
| .doOnNext { saveFullData(it) } | |
| .subscribe( | |
| { | |
| updateLabel(R.string.data_loaded) | |
| view.loadingDataProgressBar.visibility = View.GONE | |
| }, | |
| { | |
| updateLabel(R.string.load_data) | |
| view.loadingDataProgressBar.visibility = View.GONE | |
| view.showToast(R.string.error_message) | |
| } | |
| ) | |
| } | |
| private fun updateLabel(resId: Int) { | |
| view.loadingDataTextView.text = view.getString(resId) | |
| } | |
| private fun getFullData(): Observable<FullDataModel> { | |
| return Observable.zip( | |
| api.loadData(), | |
| api.loadAnoteherData(), | |
| BiFunction { data: DataModel, anotherData: AnotherDataModel -> | |
| FullDataModel(data, anotherData) | |
| } | |
| ).subscribeOn(Schedulers.io()) | |
| } | |
| private fun saveFullData(data: FullDataModel) { | |
| DataRepository.saveFullData(data) | |
| .subscribeOn(Schedulers.io()) | |
| .subscribe() | |
| } | |
| } |
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| class LoadingDataView : FrameLayout { | |
| constructor(context: Context) : super(context) | |
| constructor(context: Context, attrs: AttributeSet?) : super(context, attrs) | |
| constructor(context: Context, attrs: AttributeSet?, defStyleAttr: Int) : super( | |
| context, | |
| attrs, | |
| defStyleAttr | |
| ) | |
| init { | |
| View.inflate(context, R.layout.view_loading_data, this) | |
| val presenter = LoadingDataPresenter(this) | |
| setOnClickListener { | |
| loadingDataProgressBar.visibility = View.VISIBLE | |
| presenter.loadData() | |
| } | |
| } | |
| fun getString(resId: Int): String = context.getString(resId) | |
| fun showToast(resId: Int) { | |
| Toast.makeText(context, resId, Toast.LENGTH_SHORT).show() | |
| } | |
| } |
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