Are Activity faster to create than fragment?

Question

I had a layout for Fragment to show information about a product but sadly, during the creation of fragment there was slight lag( glitch) of around 50ms (that is what I guess how log the lag is which is a lot as the refresh rate for android is 16ms) but when I use the same layout in Activity directly and applied the same logic it looked and felt smooth.

Are there any particular reasons for this case ? Are there any way to make fragment look as smooth as activity during creation ?

You can test some complex layout and try inflate it as fragment's view and using same as layout content for activity.

This is how my oncreate looks like in both fragment and activity:

@Override
public void onCreate ( Bundle savedInstanceState ) {  // or equivalent  override for fragment.
    super.onCreate ( savedInstanceState );
    setContentView ( R.layout.fragment_product_profile );
    initLayout ();
    loadData ();
    initCustomMadeImageSlider ();
    autoScrollViewPager ();
}

I reckon Fragment can never be created faster than it's host Activity simply because it has to be attached to the Activity. — WenChao, Jan 13 '17 at 05:33
That sounds like a fine logic to me, but in this case the activity is already created and I just want to attach new fragment in it but its faster to create new activity with same content — erluxman, Jan 13 '17 at 05:58

score 5 · Accepted Answer · edited May 23 '17 at 12:01

5

A fragment must always be embedded in an activity and the fragment's lifecycle is directly affected by the host activity's lifecycle.

Fragment : Major Advantage is

A separate Activity is created for each form factor with the non-UI details duplicated or otherwise shared across each Activity

Fragments eliminate this problem by taking on the UI details and leaving the other responsibilities to the Activity. This way a separate Fragment can be created for each form factor with the form factor specific UI details being the only responsibilities of each Fragment.

Are Activity faster to create than fragment ? YES . Activity->Fragment .

A Fragment represents a behavior or a portion of user interface in an Activity

Please read about When to use Fragments vs Activities

edited May 23 '17 at 12:01

Community

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answered Jan 13 '17 at 05:32

IntelliJ Amiya

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So you mean its not a good idea to use fragment if its going to take whole screen ? and use them for portions ? – erluxman Jan 13 '17 at 05:37
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And your answer suggests that fragments should be more fluent than activity right ? – erluxman Jan 13 '17 at 05:38
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Yeah it totally does but I am talking about the optimal principle ... Like leaves are green ( but yeah sometimes they are red too ) – erluxman Jan 13 '17 at 05:39
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Can I please know what you are referring as fluent and what you are referring as fast ? In this contest I am using them to be kinda similar so got bit confused – erluxman Jan 13 '17 at 05:41
@LaxmanBhattarai Please read http://stackoverflow.com/questions/20306091/dilemma-when-to-use-fragments-vs-activities – IntelliJ Amiya Jan 13 '17 at 05:44
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Thanks for suggestion @IntelliJ – erluxman Jan 13 '17 at 05:45
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neat and well explained – Pavneet_Singh Jan 13 '17 at 06:37
@PavneetSingh Not well . Actually i have a problem in english – IntelliJ Amiya Jan 13 '17 at 06:39
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don't underestimate the power of yourself :P – Pavneet_Singh Jan 13 '17 at 06:42
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Are Activity faster to create than fragment ? YES . Activity->Fragment . As you edited it from NO to YES I am convinced about your logic finally, that NO got me confused at first. – erluxman Jan 13 '17 at 06:49

Are Activity faster to create than fragment?

1 Answers1