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for the solution within forecastfragment
Для решения в пределах ForecastFragment, мы
we implemented fetchweathertask which extends async tasks the generics
реализовали FetchWeatherTask, который расширяет AsyncTask. Используемые нами
we use are just void and this is fine for now then within the do and
дженерики — просто Void, и это пока что хорошо. Затем в пределах метода
background method we copied our
doInBackground, мы скопировали наш фрагмент сетевого кода
networking code snippet here it's the
сюда. Он тот же самый за исключением того, что в
same except that in certain cases we return null instead of setting the
некоторых случаях мы возвращаем null вместо
forecast JSON string to be null
установления forecastJsonStr null.
previously the code was in oncreate view which expected us to inflate in return
Ранее код был onCreateView, который ожидал от нас
of you so it's important that it got to
собрать и вернуть представление. Так что это важно, что он получил
the rest of the code even if there was
остальную часть кода. Даже если в сетевом
an error in the networking code now that
коде была ошибка. Теперь когда сетевой код находится в
the networking code is an async task there's really nothing that comes after
AsyncTask, после этого на самом деле ничего нет
this and the doing background method so it's fine to just bail early whenever
в данном фоновом методе. Так что хорошо брать на поруки рано,
there's an error also note that for our
когда имеется ошибка. Также знайте, что для наших лог-сообщений
log messages we've defined a log tag constant at the top of this task this
мы определили LOG_TAG константой. Вверху этой задачи.
log tag is defined to be the name of the fetchweathertask class the reason we use
Этот LOG_TAG определён быть именем FetchWeatherTask.class.
this syntax instead of declaring a
Причина, по которой мы используем этот синтаксис вместо
string fetchweathertask
декларирования строки FetchWeatherTask — это потому что
is because we want these two to be in sync if you ever rename the class then
мы хотим эти двое были синхронизованы. Если вы когда-либо переименуете
it will throw an exception unless you also update it here
класс, он выбросит ошибку, если вы также не обновите его здесь.
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