Android 如何使用Dagger2注入改型数据服务
在我的MVP架构中，我有一个改造实例Android 如何使用Dagger2注入改型数据服务,android,dependency-injection,retrofit,rx-java,dagger-2,Android,Dependency Injection,Retrofit,Rx Java,Dagger 2,在我的MVP架构中，我有一个改造实例 public class RetrofitInstance { private static Retrofit retrofit; private static final String BASE_URL = "http://api.openweathermap.org/data/2.5/"; /** * Create an instance of Retrofit object * */ public
public class RetrofitInstance {
private static Retrofit retrofit;
private static final String BASE_URL = "http://api.openweathermap.org/data/2.5/";
/**
* Create an instance of Retrofit object
* */
public static Retrofit getRetrofitInstance() {
if (retrofit == null) {
retrofit = new retrofit2.Retrofit.Builder()
.baseUrl(BASE_URL)
.addConverterFactory(GsonConverterFactory.create())
.addCallAdapterFactory(RxJava2CallAdapterFactory.create())
.build();
}
return retrofit;
}
}
public interface GetNoticeDataService {
@GET("weather?appid=0194877ecdcac230396a119c01d46100")
Observable<NoticeList> getNoticeData(@Query("lat") double lat , @Query("lon") double lon );
}
public class MainPresenterImpl implements MainContract.presenter, MainContract.GetNoticeIntractor.OnFinishedListener {
private MainContract.MainView mainView;
private MainContract.GetNoticeIntractor getNoticeIntractor;
@Inject
public MainPresenterImpl(MainContract.MainView mainView, MainContract.GetNoticeIntractor getNoticeIntractor) {
this.mainView = mainView;
this.getNoticeIntractor = getNoticeIntractor;
}
@Override
public void onDestroy() {
mainView = null;
}
@Override
public void onRefreshButtonClick() {
if(mainView != null){
mainView.showProgress();
}
getNoticeIntractor.getNoticeArrayList(this);
}
@Override
public void requestDataFromServer() {
getNoticeIntractor.getNoticeArrayList(this);
}
@Override
public void onFinished(ArrayList<Notice> noticeArrayList, Main main, Wind wind) {
if(mainView != null){
mainView.setDataToRecyclerView(noticeArrayList,main,wind);
mainView.hideProgress();
}
}
@Override
public void onFailure(Throwable t) {
if(mainView != null){
mainView.onResponseFailure(t);
mainView.hideProgress();
}
}
}
公共类MainPresenterImpl实现MainContract.presenter、MainContract.GetNoticeInactor.OnFinishedListener{
private main contract.MainView MainView；
private main contract.GetNoticeIntractor GetNoticeIntractor；
@注入
public MainPresenterImpl（MainContract.MainView MainView，MainContract.GetNoticeIntractor GetNoticeIntractor）{
this.mainView=mainView；
this.getNoticeIntractor=getNoticeIntractor；
}
@凌驾
公共空间{
mainView=null；
}
@凌驾
公共无效onRefreshButtonClick（）{
if（mainView！=null）{
mainView.showProgress（）；
}
getNoticeIntractor.getNoticeArrayList（此）；
}
@凌驾
public void requestDataFromServer（）{
getNoticeIntractor.getNoticeArrayList（此）；
}
@凌驾
已完成公共空隙（阵列列表公告列表、主干道、风）{
if（mainView！=null）{
mainView.setDataToRecyclerView（noticeArrayList，main，wind）；
mainView.hideProgress（）；
}
}
@凌驾
失效时的公共无效（可丢弃的t）{
if（mainView！=null）{
mainView.onResponseFailure（t）；
mainView.hideProgress（）；
}
}
}
public interface MainContract {
/**
* Call when user interact with the view and other when view OnDestroy()
* */
interface presenter{
void onDestroy();
void onRefreshButtonClick();
void requestDataFromServer();
}
/**
* showProgress() and hideProgress() would be used for displaying and hiding the progressBar
* while the setDataToRecyclerView and onResponseFailure is fetched from the GetNoticeInteractorImpl class
**/
interface MainView {
void showProgress();
void hideProgress();
void setDataToRecyclerView(ArrayList<Notice> noticeArrayList, Main main, Wind wind);
void onResponseFailure(Throwable throwable);
}
/**
* Intractors are classes built for fetching data from your database, web services, or any other data source.
**/
interface GetNoticeIntractor {
interface OnFinishedListener {
void onFinished(ArrayList<Notice> noticeArrayList, Main main, Wind wind);
void onFailure(Throwable t);
}
void getNoticeArrayList(OnFinishedListener onFinishedListener);
}
}
公共接口主合同{
/**
*当用户与视图交互时调用，当查看OnDestroy（）时调用
* */
界面演示者{
void onDestroy（）；
void onRefreshButtonClick（）；
void requestDataFromServer（）；
}
/**
*showProgress（）和hideProgress（）将用于显示和隐藏progressBar
*而SetDataToRecycleView和onResponseFailure是从GetNoticeInteractorImpl类获取的
**/
界面主视图{
void showProgress（）；
void hideProgress（）；
void setDataToRecyclerView（阵列列表通知列表、干管、风）；
响应无效（可丢弃可丢弃）；
}
/**
*intractor是为从数据库、web服务或任何其他数据源获取数据而构建的类。
**/
接口GetNoticeIntractor{
接口OnFinishedListener{
无效完成（阵列列表通知列表、主干道、风）；
失效无效（可丢弃的t）；
}
void getNoticeArrayList（OnFinishedListener OnFinishedListener）；
}
}
public class NoticeAdapter extends RecyclerView.Adapter<NoticeAdapter.EmployeeViewHolder> {
private static Wind wind;
private static ArrayList<Notice> dataList;
private static Main main;
private Date currentTime = Calendar.getInstance().getTime();
public static String date;
private Context mContext;
private RecyclerItemClickListener recyclerItemClickListener;
public NoticeAdapter(ArrayList<Notice> dataList, Main main, Wind wind, RecyclerItemClickListener recyclerItemClickListener,Context context) {
NoticeAdapter.dataList = dataList;
NoticeAdapter.main = main;
NoticeAdapter.wind = wind;
this.recyclerItemClickListener = recyclerItemClickListener;
this.mContext=context;
}
@NonNull
@Override
public EmployeeViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
LayoutInflater layoutInflater = LayoutInflater.from(parent.getContext());
View view = layoutInflater.inflate(R.layout.single_view_row, parent, false);
return new EmployeeViewHolder(view);
}
@SuppressLint("SetTextI18n")
@Override
public void onBindViewHolder(@NonNull EmployeeViewHolder holder, @SuppressLint("RecyclerView") final int position) {
setDate(currentTime.toString().substring(0,currentTime.toString().length()-18));
if(getAddressMap()!=null){holder.txtNoticeAddress.setText("Loc: "+getAddressMap());}else{holder.txtNoticeAddress.setText("Loc: Unknown location");}
holder.imageIcon.setImageURI(Uri.parse("android.resource://com.locweather/drawable/i"+dataList.get(position).getIcon()));
holder.txtNoticeWind.setText("Wind: "+roundUp(+wind.getSpeed())+"m/s, "+arrow());
holder.txtNoticeTempMain.setText(roundUp(+main.getTemp())+"°C");
holder.txtNoticeWeather.setText(dataList.get(position).getWeather()+" : "+dataList.get(position).getInfo());
holder.txtNoticeTemp.setText("Feels: "+roundUp(+main.getFeelsLike())+"°C ");
holder.txtNoticeTime.setText(date);
holder.txtNoticeHumidity.setText("Humidity: "+main.getHumidity()+"%");
holder.txtNoticePressure.setText("Pressure: "+main.getPressure()+"hPa");
holder.itemView.setOnClickListener(v -> {
recyclerItemClickListener.onItemClick();
saveNoticeList(mContext,dataList); });
holder.saveButton.setOnClickListener(v -> {
recyclerItemClickListener.onItemClick();
saveNoticeList(mContext,dataList); });
}
private static String getAddressMap() {
return MapsActivity.addressMap;
}
private static void setDate(String date) {
NoticeAdapter.date = date;
}
@Override
public int getItemCount() {
return dataList.size();
}
private static LatLng getloc(){
return currentLocation;
}
class EmployeeViewHolder extends RecyclerView.ViewHolder {
ImageView imageIcon;
Button saveButton;
TextView txtNoticeWeather, txtNoticeTempMain,txtNoticeTemp, txtNoticeHumidity,txtNoticeAddress,txtNoticePressure,txtNoticeWind,txtNoticeTime;
EmployeeViewHolder(View itemView) {
super(itemView);
saveButton=itemView.findViewById(R.id.save_button);
imageIcon=itemView.findViewById(R.id.image_icon);
txtNoticeTime= itemView.findViewById(R.id.txt_time);
txtNoticeWind= itemView.findViewById(R.id.txt_notice_wind);
txtNoticeAddress= itemView.findViewById(R.id.txt_notice_title);
txtNoticeWeather = itemView.findViewById(R.id.txt_notice_weather);
txtNoticeTemp = itemView.findViewById(R.id.txt_notice_temp);
txtNoticeHumidity = itemView.findViewById(R.id.txt_notice_humidity);
txtNoticePressure = itemView.findViewById(R.id.txt_notice_pressure);
txtNoticeTempMain = itemView.findViewById(R.id.txt_notice_temp_main);
}
}
private static void saveNoticeList(Context context, List<Notice> noticeList) {
if (context != null && noticeList != null) {
WeatherData weatherData = new WeatherData(getAddressMap(), wind.getSpeed(), wind.getDeg(), dataList.get(0).getIcon(), dataList.get(0).getInfo(), dataList.get(0).getWeather(), main.getTemp(), main.getFeelsLike(), main.getHumidity(), main.getPressure(), date, getloc().latitude, getloc().longitude);
WeatherDatabase.getInstance(context)
.weatherDao()
.save(weatherData);
}
}
public class NoticeAdapter extends RecyclerView.Adapter<NoticeAdapter.EmployeeViewHolder> {
private static Wind wind;
private static ArrayList<Notice> dataList;
private static Main main;
private Date currentTime = Calendar.getInstance().getTime();
public static String date;
private Context mContext;
private RecyclerItemClickListener recyclerItemClickListener;
public NoticeAdapter(ArrayList<Notice> dataList, Main main, Wind wind, RecyclerItemClickListener recyclerItemClickListener,Context context) {
NoticeAdapter.dataList = dataList;
NoticeAdapter.main = main;
NoticeAdapter.wind = wind;
this.recyclerItemClickListener = recyclerItemClickListener;
this.mContext=context;
}
@NonNull
@Override
public EmployeeViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
LayoutInflater layoutInflater = LayoutInflater.from(parent.getContext());
View view = layoutInflater.inflate(R.layout.single_view_row, parent, false);
return new EmployeeViewHolder(view);
}
@SuppressLint("SetTextI18n")
@Override
public void onBindViewHolder(@NonNull EmployeeViewHolder holder, @SuppressLint("RecyclerView") final int position) {
setDate(currentTime.toString().substring(0,currentTime.toString().length()-18));
if(getAddressMap()!=null){holder.txtNoticeAddress.setText("Loc: "+getAddressMap());}else{holder.txtNoticeAddress.setText("Loc: Unknown location");}
holder.imageIcon.setImageURI(Uri.parse("android.resource://com.locweather/drawable/i"+dataList.get(position).getIcon()));
holder.txtNoticeWind.setText("Wind: "+roundUp(+wind.getSpeed())+"m/s, "+arrow());
holder.txtNoticeTempMain.setText(roundUp(+main.getTemp())+"°C");
holder.txtNoticeWeather.setText(dataList.get(position).getWeather()+" : "+dataList.get(position).getInfo());
holder.txtNoticeTemp.setText("Feels: "+roundUp(+main.getFeelsLike())+"°C ");
holder.txtNoticeTime.setText(date);
holder.txtNoticeHumidity.setText("Humidity: "+main.getHumidity()+"%");
holder.txtNoticePressure.setText("Pressure: "+main.getPressure()+"hPa");
holder.itemView.setOnClickListener(v -> {
recyclerItemClickListener.onItemClick();
saveNoticeList(mContext,dataList); });
holder.saveButton.setOnClickListener(v -> {
recyclerItemClickListener.onItemClick();
saveNoticeList(mContext,dataList); });
}
private static String getAddressMap() {
return MapsActivity.addressMap;
}
private static void setDate(String date) {
NoticeAdapter.date = date;
}
@Override
public int getItemCount() {
return dataList.size();
}
private static LatLng getloc(){
return currentLocation;
}
class EmployeeViewHolder extends RecyclerView.ViewHolder {
ImageView imageIcon;
Button saveButton;
TextView txtNoticeWeather, txtNoticeTempMain,txtNoticeTemp, txtNoticeHumidity,txtNoticeAddress,txtNoticePressure,txtNoticeWind,txtNoticeTime;
EmployeeViewHolder(View itemView) {
super(itemView);
saveButton=itemView.findViewById(R.id.save_button);
imageIcon=itemView.findViewById(R.id.image_icon);
txtNoticeTime= itemView.findViewById(R.id.txt_time);
txtNoticeWind= itemView.findViewById(R.id.txt_notice_wind);
txtNoticeAddress= itemView.findViewById(R.id.txt_notice_title);
txtNoticeWeather = itemView.findViewById(R.id.txt_notice_weather);
txtNoticeTemp = itemView.findViewById(R.id.txt_notice_temp);
txtNoticeHumidity = itemView.findViewById(R.id.txt_notice_humidity);
txtNoticePressure = itemView.findViewById(R.id.txt_notice_pressure);
txtNoticeTempMain = itemView.findViewById(R.id.txt_notice_temp_main);
}
}
private static void saveNoticeList(Context context, List<Notice> noticeList) {
if (context != null && noticeList != null) {
WeatherData weatherData = new WeatherData(getAddressMap(), wind.getSpeed(), wind.getDeg(), dataList.get(0).getIcon(), dataList.get(0).getInfo(), dataList.get(0).getWeather(), main.getTemp(), main.getFeelsLike(), main.getHumidity(), main.getPressure(), date, getloc().latitude, getloc().longitude);
WeatherDatabase.getInstance(context)
.weatherDao()
.save(weatherData);
}
}
@Module
object WebServiceModule {
@Singleton
@Provides
fun providesGetNoticeDataService(retrofit: Retrofit): GetNoticeDataService =
retrofit.create<GetNoticeDataService>(GetNoticeDataService::class.java)
@Provides
fun providesGsonConverterFactory(): GsonConverterFactory = GsonConverterFactory.create()
@Provides
fun providesOkHttpClient(loggingInterceptor: HttpLoggingInterceptor): OkHttpClient =
OkHttpClient.Builder()
.connectTimeout(20, TimeUnit.SECONDS)
.readTimeout(20, TimeUnit.SECONDS)
.addInterceptor(loggingInterceptor)
.build()
@Provides
fun providesOkHttpLoggingInterceptor(): HttpLoggingInterceptor =
HttpLoggingInterceptor().apply {
level = HttpLoggingInterceptor.Level.BODY
}
@Provides
fun provideRxJava2CallAdapterFactory(): RxJava2CallAdapterFactory =
RxJava2CallAdapterFactory.create()
@Provides
fun providesRetrofit(
client: OkHttpClient,
converterFactory: GsonConverterFactory,
adapterFactory: RxJava2CallAdapterFactory
): Retrofit = Retrofit.Builder()
.baseUrl(BASE_URL)
.addConverterFactory(converterFactory)
.addCallAdapterFactory(adapterFactory)
.client(client)
.build()
}
@Module
public class WebServiceModule {
@Singleton
@Provides
Retrofit provideRetrofit() {
// This method tells Dagger all it needs to know about creating
// a Retrofit instance. This will be replaced by something closer
// to BWappsandmore's answer after RetrofitInstance is no longer needed.
return RetrofitInstance.getRetrofitInstance();
}
@Singleton
@Provides
GetNoticeDataService provideGetNoticeDataService(Retrofit retrofit) {
return retrofit.create(GetNoticeDataService.class);
}
// @Reusable or @Singleton if you only need one interactor of this type.
public class GetNoticeInteractorImpl implements MainContract.GetNoticeInteractor {
private GetNoticeDataService service
@Inject
GetNoticeInteractorImpl(GetNoticeDataService service) {
this.service = service;
}
private LatLng getloc(){
return currentLocation;
}
@SuppressLint("CheckResult")
@Override
public void getNoticeArrayList(final OnFinishedListener onFinishedListener) {
// Our service was injected in the constructor, so there
// is no need to create it here.
// You might also consider injecting your schedulers in the future
// for unit testing.
if(currentLocation!=null) {
service.getNoticeData(getloc().latitude, getloc().longitude)
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(items -> onFinishedListener.onFinished(items.getNoticeArrayList(), items.getMain(), items.getWind()), onFinishedListener::onFailure);
}
}
}
@Module
abstract class AnotherModule { // or interface
@Binds
abstract MainContract.GetNoticeInteractor bindGetNoticeInteractor(GetNoticeInteractorImpl implementation);
}
@Component(modules = {WebServicesModule.class, AnotherModule.class})
@Singleton
public interface AppComponent {
@Component.Factory
interface Factory {
AppComponent create(@BindsInstance Application application); // or whatever
}
void bindMainActivity(MainActivity activity);
}
// Probably not a singleton, but if you create an activity scope later, this might use that scope.
class MainPresenter {
@Inject
public MainPresenter(MainContract.GetNoticeInteractor interactor) {
this.getNoticeInteractor = interactor
}
// ...
}
class MainActivity {
@Inject
MainPresenter presenter;
@Override
public void onCreate(Bundle savedInstanceState) {
somehowGetComponent().inject(this);
super(savedInstanceState);
// ...
}
// ...
}