I'm familiar with almost all the basic layouts in Android & understand when they are to be used. I know that a RelativeLayout is to be used when elements in the UI are to positioned relative to each other, that a LinearLayout is to be used when UI elements are to be displayed vertically or horizontally. So I was wondering if the ease of development was the only factor that determined what layout should be selected or if there was any performance factor involved. I mean I can lay out two ImageViews vertically in Android using both LinearLayout and RelativeLayout, so why use a particular layout then?
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1I think you covered the basics, and are simplifying the problem a little – OneCricketeer Sep 21 '16 at 02:57
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If you can do something with LinearLayout or with RelativeLayout, use Linear- it lays out faster because it doesn't have to calculate rules. Relative layout becomes necessary when you have overlapping views, or complex layouts- there are things that you can do with relative that can't be done with linear. – Gabe Sechan Sep 21 '16 at 05:53
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There are some performance gains for avoiding certain things, such as nesting RelativeLayout (see this question). Also, the docs recommend making layouts shallow and wide, which can facilitated with RelativeLayout, again for performance reasons.
However, often thinking about such things will be premature optimization for simple layouts, and you should use whatever makes the most sense for the situation.
