java.lang。 RuntimeException 未找到 Retrofit 注释。 (参数#3)
java.lang. RuntimeException No Retrofit annotation found. (parameter #3)
我正在尝试更新这个 RetroFit + Otto tutorial,所以我更新的代码是:
IWeather.java
RetroFit 2.+ 不允许 return void
,所以我添加了 Call<Weather> getWeather(...)
.
而不是 void getWeather(...)
public interface IWeather {
@GET("/{latitude},{longitude}")
Call<Weather> getWeather(@Path("latitude") String latitude,
@Path("longitude") String longitude,
Callback<Weather> callback);
}
ForecastClient.java
RetroFit 2.+改变了他的构造函数,所以新的ForecastClient
有下一个形式。 IllegalArgumentException
指向 weather.getWeather(...)
方法。
public class ForecastClient {
private static final String BASE_URL = "https://api.darksky.net/forecast/";
private static final String API_KEY = "******************";
public static final String API_URL = BASE_URL + API_KEY + "/";
private static ForecastClient mForecastClient;
private static Retrofit mRetroAdapter;
public static ForecastClient getClient() {
if (mForecastClient == null) {
mForecastClient = new ForecastClient();
}
return mForecastClient;
}
private ForecastClient() {
mRetroAdapter = new Retrofit.Builder()
.baseUrl(API_URL)
.addConverterFactory(GsonConverterFactory.create())
.client(new OkHttpClient())
.build();
}
public void getWeather(String latitude, String longitude, Callback<Weather> callback) {
IWeather weather = mRetroAdapter.create(IWeather.class);
weather.getWeather(latitude, longitude, callback);
}
}
ForecastManager.java
public class ForecastManager {
private Context mContext;
private Bus mBus;
private ForecastClient sForecastClient;
public ForecastManager(Context context, Bus bus) {
this.mContext = context;
this.mBus = bus;
sForecastClient = ForecastClient.getClient();
}
@Subscribe
public void onGetWeatherEvent(GetWeatherEvent getWeatherEvent) {
String latitude = Double.toString(getWeatherEvent.getLatitude()).trim();
String longitude = Double.toString(getWeatherEvent.getLongitude()).trim();
Callback<Weather> callback = new Callback<Weather>() {
@Override
public void onResponse(Call<Weather> call, Response<Weather> response) {
Log.d(ForecastManager.class.getSimpleName(), response.body().toString());
mBus.post(new SendWeatherEvent(response.body()));
}
@Override
public void onFailure(Call<Weather> call, Throwable t) {
Log.e(ForecastManager.class.getSimpleName(), t.getMessage());
}
};
sForecastClient.getWeather(latitude, longitude, callback);
}
}
我收到一个 No Retrofit annotation found,我猜原因与我的回调有关,但它是一个 RetroFit 回调,所以我不明白为什么会出错。
堆栈跟踪指向 MainActivity,特别是带有 java.lang.RuntimeException: Could not dispatch event
的 Otto 方法 post()
,由前面提到的错误 java.lang.IllegalArgumentException: No Retrofit annotation found. (parameter #3)
:
引起
MainActivity.java
public class MainActivity extends AppCompatActivity {
@BindView(R.id.activity_main_textView)
TextView textView;
@BindView(R.id.activity_main_button)
Button button;
private static final double LATITUDE = **.******;
private static final double LONGITUDE = **.******;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ButterKnife.bind(this);
}
@OnClick(R.id.activity_main_button)
public void onClick(View view) {
BusProvider.getInstace().post(new GetWeatherEvent(LATITUDE, LONGITUDE));
}
@Subscribe
public void onSendWeatherEvent(SendWeatherEvent sendWeatherEvent) {
Weather weather = sendWeatherEvent.getWeather();
Currently currently = weather.getCurrently();
textView.setText(currently.getSummary());
}
关于错误在哪里或我应该如何处理总线订阅、回调等的任何线索?
java.lang.IllegalArgumentException: No Retrofit annotation found. (parameter #3)
如错误所说,问题是getWeather
方法的第三个参数没有注解。 Callback
class 用于 Call#enqueue(Callback)
方法。
简单改变
sForecastClient.getWeather(latitude, longitude, callback)
到
sForecastClient.getWeather(latitude, longitude).enqueue(callback)
并删除第三个参数。
尝试一下,修改你的改造版本号为2.6.0
。 Retrofit 2.6.0
中协程的使用可以直接return一个Response
对象。如果不需要await()
,Retrofit会自动调用。版本低于2.6.0
.
时不适用
我正在尝试更新这个 RetroFit + Otto tutorial,所以我更新的代码是:
IWeather.java
RetroFit 2.+ 不允许 return void
,所以我添加了 Call<Weather> getWeather(...)
.
void getWeather(...)
public interface IWeather {
@GET("/{latitude},{longitude}")
Call<Weather> getWeather(@Path("latitude") String latitude,
@Path("longitude") String longitude,
Callback<Weather> callback);
}
ForecastClient.java
RetroFit 2.+改变了他的构造函数,所以新的ForecastClient
有下一个形式。 IllegalArgumentException
指向 weather.getWeather(...)
方法。
public class ForecastClient {
private static final String BASE_URL = "https://api.darksky.net/forecast/";
private static final String API_KEY = "******************";
public static final String API_URL = BASE_URL + API_KEY + "/";
private static ForecastClient mForecastClient;
private static Retrofit mRetroAdapter;
public static ForecastClient getClient() {
if (mForecastClient == null) {
mForecastClient = new ForecastClient();
}
return mForecastClient;
}
private ForecastClient() {
mRetroAdapter = new Retrofit.Builder()
.baseUrl(API_URL)
.addConverterFactory(GsonConverterFactory.create())
.client(new OkHttpClient())
.build();
}
public void getWeather(String latitude, String longitude, Callback<Weather> callback) {
IWeather weather = mRetroAdapter.create(IWeather.class);
weather.getWeather(latitude, longitude, callback);
}
}
ForecastManager.java
public class ForecastManager {
private Context mContext;
private Bus mBus;
private ForecastClient sForecastClient;
public ForecastManager(Context context, Bus bus) {
this.mContext = context;
this.mBus = bus;
sForecastClient = ForecastClient.getClient();
}
@Subscribe
public void onGetWeatherEvent(GetWeatherEvent getWeatherEvent) {
String latitude = Double.toString(getWeatherEvent.getLatitude()).trim();
String longitude = Double.toString(getWeatherEvent.getLongitude()).trim();
Callback<Weather> callback = new Callback<Weather>() {
@Override
public void onResponse(Call<Weather> call, Response<Weather> response) {
Log.d(ForecastManager.class.getSimpleName(), response.body().toString());
mBus.post(new SendWeatherEvent(response.body()));
}
@Override
public void onFailure(Call<Weather> call, Throwable t) {
Log.e(ForecastManager.class.getSimpleName(), t.getMessage());
}
};
sForecastClient.getWeather(latitude, longitude, callback);
}
}
我收到一个 No Retrofit annotation found,我猜原因与我的回调有关,但它是一个 RetroFit 回调,所以我不明白为什么会出错。
堆栈跟踪指向 MainActivity,特别是带有 java.lang.RuntimeException: Could not dispatch event
的 Otto 方法 post()
,由前面提到的错误 java.lang.IllegalArgumentException: No Retrofit annotation found. (parameter #3)
:
MainActivity.java
public class MainActivity extends AppCompatActivity {
@BindView(R.id.activity_main_textView)
TextView textView;
@BindView(R.id.activity_main_button)
Button button;
private static final double LATITUDE = **.******;
private static final double LONGITUDE = **.******;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ButterKnife.bind(this);
}
@OnClick(R.id.activity_main_button)
public void onClick(View view) {
BusProvider.getInstace().post(new GetWeatherEvent(LATITUDE, LONGITUDE));
}
@Subscribe
public void onSendWeatherEvent(SendWeatherEvent sendWeatherEvent) {
Weather weather = sendWeatherEvent.getWeather();
Currently currently = weather.getCurrently();
textView.setText(currently.getSummary());
}
关于错误在哪里或我应该如何处理总线订阅、回调等的任何线索?
java.lang.IllegalArgumentException: No Retrofit annotation found. (parameter #3)
如错误所说,问题是getWeather
方法的第三个参数没有注解。 Callback
class 用于 Call#enqueue(Callback)
方法。
简单改变
sForecastClient.getWeather(latitude, longitude, callback)
到
sForecastClient.getWeather(latitude, longitude).enqueue(callback)
并删除第三个参数。
尝试一下,修改你的改造版本号为2.6.0
。 Retrofit 2.6.0
中协程的使用可以直接return一个Response
对象。如果不需要await()
,Retrofit会自动调用。版本低于2.6.0
.