Github简单易用的 Android ViewModel Retrofit框架

allprojects {
    repositories {
        Google()
        Maven { url 'https://jitpack.io' }
        jcenter()
    }
}

dependencies {
	implementation 'com.GitHub.miaotaoii:RequestViewModel:1.0.3'

}

public interface RetrofitDataApi {
    public static final String requestOilprice = "/oilprice/index?key=3c5ee42145c852de4147264f25b858dc";
    public static final String baseUrl = "Http://api.tianapi.com";
    
    //ResponseJSONBean对象是自定义的服务器返回json类型，可以是泛型类型，如 ResponseData<UserInfo>
    @GET(requestOilprice)
    Call<ResponseJsonBean> getOliPrice(@Query("prov") String prov);
}

Retrofit retrofit = new Retrofit.Builder()
                .baseUrl(RetrofitDataApi.baseUrl)
                .addConverterFactory(GsonConverterFactory.create())
                .client(new OkHttpClient.Builder()
                        .build())
                .build();
RetrofitConfig.getInstance(retrofit).init();

RetrofitConfig.getInstance(RetrofitDataApi.baseUrl).init();

protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		... ...
//构建请求对象，设置请求api注解和参数,设置api返回对象类型和livedata数据类型
RequestObj<ResponseJsonBean> requestObj = new RequestObj<ResponseJsonBean>(RetrofitDataApi.requestOilprice) {
            @Override
            public Object[] getArgs() {
                return new Object[]{fORMatInputArg()};
            }
        };
		... ... 
}

public class OliPriceLiveData extends RequestLiveData<ResponseJsonBean, PriceBean> {
    @Override
    public void onLoadSuccess(ResponseJsonBean data) {
        if (data.getCode() == 200) {
            PriceBean priceBean = data.getNewslist().get(0);
            priceBean.setCode(200);
            postValue(priceBean);
        } else {
            PriceBean priceBean = new PriceBean();
            priceBean.setCode(data.getCode());
            priceBean.setMsg(data.getMsg());
            postValue(priceBean);
        }
    }
    @Override
    public void onLoadFailed(int code, String msg) {
        PriceBean priceBean = new PriceBean();
        priceBean.setCode(code);
        priceBean.setMsg(msg);
        postValue(priceBean);
    }
}

private RequestViewModel requestViewModel;
private OliPriceLiveData liveData;

protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
	... ...
	requestViewModel = RequestViewModelProvider.getInstance().get(
						    this,
							RetrofitDataApi.class,
	 					    RequestViewModel.class
	 					    ); 
//构建请求对象，设置请求api注解和参数,设置api返回对象类型和livedata数据类型
	RequestObj<ResponseJsonBean> requestObj = new RequestObj<ResponseJsonBean>(RetrofitDataApi.requestOilprice) {
            @Override
            public Object[] getArgs() {
                return new Object[]{formatInputArg()};
            }
        };

	liveData = requestViewModel.getRequestLiveData(requestObj, OliPriceLiveData.class);

	... ... 
}

  requestObj.setArgs(new Object[]{"arg1",1,...});
  liveData.refresh();

 liveData.observe(this, new Observer<PriceBean>() {
            @Override
            public void onChanged(PriceBean priceBean) {
                if (priceBean.getCode() != 200) {
                    Toast.makeText(MainActivity.this, "请求失败 code =" + priceBean.getCode() + " msg = " + priceBean.getMsg()
                            , Toast.LENGTH_SHORT).show();
                } else {
                    //更新ui ，此处使用dataBinding 自动更新到ui
                    Log.i("MainActivity", "price bean onchanged " + priceBean.toString());
                }
            }
        });

RetrofitConfig.setLogLevel(Logger.LogLevel.INFO);

I/[RequestViewModel]: TypedRequest[com.ocode.requestvm.request.TypedRequestImpl@96f475c] ------>[interface com.requestVM.demo.api.RetrofitDataApi]  (public abstract retrofit2.Call<com.requestVM.demo.api.ResponseJsonBean> com.requestVM.demo.api.RetrofitDataApi.getOliPrice(java.lang.String,java.lang.String)) args{上海,test,}
I/[RequestViewModel]: TypedRequest[com.ocode.requestvm.request.TypedRequestImpl@96f475c ]onResponse call return s