java 作为原始类型的成员未经检查地调用方法
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Unchecked call to method as a member of raw type
提问by Akash Bisariya
Following warning is shown in my project -
以下警告显示在我的项目中 -
Unchecked call to 'getWeatherData(T,Boolean,String)' as a member of raw type 'IWeatherCallbackListener'.
未经检查地调用“getWeatherData(T,Boolean,String)”作为原始类型“IWeatherCallbackListener”的成员。
I have created following interface -
我创建了以下界面 -
public interface IWeatherCallbackListener<T> {
void getWeatherData(T weatherModel, Boolean success, String errorMsg);
}
And called it in following way,
并以下列方式调用它，
public class WeatherConditions {
private static IWeatherApi mWeatherApi;
/**
* @param city
* @param appId
* @param listener
*/
public static void getOpenWeatherData(String city, String appId, IWeatherCallbackListener listener) {
mWeatherApi = ApiService.getRetrofitInstance(BASE_URL_OPEN_WEATHER).create(IWeatherApi.class);
Call<OpenWeatherModel> resForgotPasswordCall = mWeatherApi.getOpenWeatherData(appId, city);
resForgotPasswordCall.enqueue(new Callback<OpenWeatherModel>() {
@Override
public void onResponse(Call<OpenWeatherModel> call, Response<OpenWeatherModel> response) {
if (response.body() != null) {
if (listener != null)
listener.getWeatherData(response.body(), true, "");
}
}
@Override
public void onFailure(Call<OpenWeatherModel> call, Throwable t) {
if (listener != null)
listener.getWeatherData(null, false, t.getMessage());
}
});
}
I have implemented this interface in my MainActivity and called the method as -
我已经在我的 MainActivity 中实现了这个接口，并将该方法称为 -
WeatherConditions.getOpenWeatherData(etCityName.getText().toString(), OPEN_WEATHER_APP_ID, MainActivity.this)
Can anyone please help and explain this warning.
任何人都可以请帮助并解释此警告。
回答by Andrey Danilov
Looks like you have to declare your Ttype too, in your case it has to be a class of response.body()instance.
看起来你也必须声明你的T类型，在你的情况下它必须是一个response.body()实例类。
Try to replace line
尝试更换线
public static void getOpenWeatherData(String city, String appId, IWeatherCallbackListener listener)
to
到
public static void getOpenWeatherData(String city, String appId, IWeatherCallbackListener<ResponseBody> listener)
That is so because when you declare your interface
这是因为当你声明你的接口时
IWeatherCallbackListener<T>
You use T and its raw type. When you create instance you have to show what exactlytype you will use or what exactly type you want to receive as argument.
您使用 T 及其原始类型。当您创建实例，你必须表现出什么确切类型，你会使用或究竟键入您希望收到作为参数。
For example if you create that listener manually that had to look like this
例如，如果您手动创建该侦听器，该侦听器必须如下所示
IWeatherCallbackListener<ResponseBody> listener = new IWeatherCallbackListener<ResponseBody>() {
//implementation of methods
}
Same thing for arguments, you have to show what Tyou can receive.
论点也是一样，你必须展示T你能得到什么。
