Layoutparams
The LayoutParams is a helper class that stores various layout information related to the Android view for which it is used.
Viewgroup
ViewGroup is a subclass of the Android View class(parent of all Android graphical widgets) which can contain child views.
Others
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Unless you know exactly what you are doing do not use the same layoutparams for more than one viewgroup from question Programmatic Margin for LinearLayout is ignored |
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The takeaway from this is that layoutparams are not parsed by the view s constructor they re parsed by another step that your code above isn t doing;the layoutinflater involves the parent viewgroup s generatelayoutparams method. from question Error applying image style dynamically, why? |