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Android: What is better - multiple activities or switching views manually?

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Checking if an Android application is running in the background

By background, I mean none of the application's activities are currently visible to the user? 30 Answers ...
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Find which version of package is installed with pip

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How to activate an Anaconda environment

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What is the difference between :focus and :active?

What is the difference between the :focus and :active pseudo-classes? 7 Answers 7 ...
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Ukkonen's suffix tree algorithm in plain English

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Android Activity as a dialog

I have an Activity named whereActity which has child dialogs as well. Now, I want to display this activity as a dialog for another activity. ...
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Android: how do I check if activity is running?

Is there any simple way of determining whether or not a certain activity is active? I want to do certain things depending on which activity is active. eg: ...
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Android. Fragment getActivity() sometimes returns null

... however some users get NullPointerException in fragment class when the getActivity() method is called. 8 Answers ...
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How to prevent multiple instances of an Activity when it is launched with different Intents

... application menu of icons. This is leading to multiple copies of the same Activity being launched, which are conflicting with each other. ...