1
我正在写一个应用程序。我想在关闭应用程序后保存UPDATE_INTERVAL_IN_MILLISECONDS
,但它不起作用。为什么关闭应用程序后间隔没有保存?
if (intervalSpinner.getSelectedItemPosition() == 0)
UPDATE_INTERVAL_IN_MILLISECONDS = 10000;
else if (intervalSpinner.getSelectedItemPosition() == 1)
UPDATE_INTERVAL_IN_MILLISECONDS = 20000;
else if (intervalSpinner.getSelectedItemPosition() == 2)
UPDATE_INTERVAL_IN_MILLISECONDS = 30000;
else
UPDATE_INTERVAL_IN_MILLISECONDS = 40000;
您需要保存和恢复此值,例如通过SharedPreferences:https://developer.android.com/training/basics/data-storage/shared-preferences.html –