Press the back button when the activity level of how to skip back to the previous activity

There are three activity, the main page main, "Loading" wait, there is more information page details
There is a main jump button to jump to wait
with datawait processed data is completed, the results will be processed into intent after the jump to details
with dataThe details page, when I press the Back button to return directly to how the main, instead of returning to wait?<-! Main posts under Banner (D4) -><-! Posts under the main text (D5) ->
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cited landlord wyj23114 reply:

three activity, the main page main, "Loading" wait, there is more information page details
There is a main jump button to jump to wait
with datawait processed data is completed, the results will be processed into intent after the jump to details
with dataThe details page, when I press the Back button to return directly to how the main, instead of returning to wait?

wait -> when the details, which in wait to call finish ()