Java Can'；t在未调用weather应用程序的Looper.prepare（）的线程内创建处理程序

我正在为一个学校项目制作天气应用程序，遇到了一个小问题。我看到很多人问这个问题，我尝试了很多答案，但都不管用。我对这些东西真的很陌生，所以我可能没有正确地实现这些答案。这是我的密码：

private void getWeatherInformation() {
    compositeDisposable.add(mService.getWeatherByLatLng(String.valueOf(APIKljuc.current_location.getLatitude()),
            String.valueOf(APIKljuc.current_location.getLongitude()),
            APIKljuc.APP_ID,
            "metric")
            .subscribeOn(Schedulers.io())
            .subscribe(new Consumer<WeatherResult>() {
                @Override
                public void accept(WeatherResult weatherResult) throws Exception {

                    //Slika
                    Picasso.get().load(new StringBuilder("https://openweathermap.org/img/w/")
                            .append(weatherResult.getWeather().get(0).getIcon())
                    .append(".png").toString()).into(img_weather);

                    //Ucitavanje informacija
                    txt_city_name.setText(weatherResult.getName());
                    txt_description.setText(new StringBuilder("Weather in")
                    .append(weatherResult.getName()).toString());
                    txt_temperature.setText(new StringBuilder(
                            String.valueOf(weatherResult.getMain().getTemp())).append("°C").toString());
                    txt_date_time.setText(APIKljuc.convertUnixToDate(weatherResult.getDt()));
                    txt_pressure.setText(new StringBuilder(String.valueOf(weatherResult.getMain().getPressure())).append(" hpa").toString());
                    txt_humidity.setText(new StringBuilder(String.valueOf(weatherResult.getMain().getHumidity())).append(" %").toString());
                    txt_sunrise.setText(APIKljuc.convertUnixToHour(weatherResult.getSys().getSunrise()));
                    txt_sundown.setText(APIKljuc.convertUnixToHour(weatherResult.getSys().getSunset()));
                    txt_geo_coords.setText(new StringBuilder("[").append(weatherResult.getCoord().toString()).append("]").toString());
                    txt_wind.setText(new StringBuilder().append(weatherResult.getCoord().toString()).append(" ").toString());

                    //Display panel
                    weather_panel.setVisibility(View.VISIBLE);
                    loading.setVisibility(View.GONE);


                }
            }, new Consumer<Throwable>() {
                @Override
                public void accept(Throwable throwable) throws Exception {
                    Toast.makeText(getActivity(), ""+throwable.getMessage(), Toast.LENGTH_LONG).show();
                }
            })

    );
}

我用它来替换：newconsumer（）{etc..}）

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我不明白我需要用什么来替换“活动”，它是红色的，我的代码无法编译。

用它来移动线程

  .observeOn(AndroidSchedulers.mainThread())

我看你用

.subscribeOn(Schedulers.io())

如果想要操纵像setText（）这样的视图，您需要移动到mainThread

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非常感谢，这很有效，我只添加了.observeOn（AndroidSchedulers.mainThread（））和left.subscribeOn（Schedulers.io（））

.subscribeOn(Schedulers.io())

.observeOn(AndroidSchedulers.mainThread())
.subscribeOn(AndroidSchedulers.mainThread())
.subscribe(new Cus)