Update the Adapter - Developing Android AppsYouTube↗  IA↗(long shot)
Education  7.8K views 5 likes 4 dislikes   23 Feb 2015
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>From the logs, we know that we have the right forecast
Из логов мы видим, что у нас верные данные о погоде,
data and it's in the right format that we want as
и они представлены в нужном формате —
an array of strings. So it's finally time to update the
в виде массива строк. Пришло, наконец, время доработать UI.
UI. Think back on how AsyncTasks are able to pass data
Вспомните, что AsyncTasks способны передавать данные
back onto the main thread. You can hit Ctrl+O to see
обратно в основной поток. Вы можете нажать Ctrl+O, чтобы
the list of available methods we can override in AsyncTask. If
увидеть список доступных методов, которые можно переопределить в AsyncTask.
you click on any of them, it will be prepopulated in
Нажав на любой из них, вы подставите его в ваш код.
the code for you. Then, you can update ArrayAdapter with the new
Затем можно обновить ArrayAdapter, используя новые данные,
data that was retrieved by the AsyncTask. As a hint, you
которые были получены AsyncTask.
can make the ForecastAdapter be a global variable. That way, you
Небольшой совет: вы можете сделать ForecastAdapter глобальной переменной
can access it from within the FetchWeatherTask. Make sure that this
и таким образом выделить её из FetchWeatherTask.
is not a static class, otherwise, you won't be able to
Убедитесь, что это не статический класс, иначе вы не получите
access the member variable from the forecast fragment. Then, go ahead
доступ к его переменной из фрагмента прогноза.
and compile and build the app. When you run it, and
Продолжайте компилировать и собирать приложение. Запустив и обновив его,
you hit the refresh button, you should see a week's worth
вы увидите данные о погоде на неделю
of weather data for your location. Once it's working, you can
для вашего местоположения. Если работает, вы можете удалить
remove the verbose log statements so you don't
подробное логирование, чтобы не загромождать логи.
clutter the logs. As you're working on this
Если, работая над этим кодом,
code, if you see an unsupported operation exception,
вы увидите исключения неподдерживаемых операций,
make sure that when you're creating the fake
убедитесь в том что, создавая псевдо-данные
data, that when you initialize ArrayAdapter, you passed
и инициализируя ArrayAdapter, вы передаёте
in a list of strings, and not an
список строк, а не массив.
array. That way you can call the clear
Таким способом можно вызвать метод очистки,
method or the add method on this list collection.
или метод добавления к этому набору списков.
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