android - How do I create child views with elements inside? -

i came across this video google demonstrated animated transitions creation of child views using onclick add or remove child view. part of learning process: took code, broke down, , made changes (i not copy , paste programmer).

my question is: how add textview, button , other various elements child view when created?

(project download google if you're interested: full project)

here have in activity:

/**  * custom view painted random background color , 2 different sizes  * toggled between due user interaction.  */ public class coloredview extends view {      private boolean mexpanded = false;      private linearlayout.layoutparams mcompressedparams = new linearlayout.layoutparams(             viewgroup.layoutparams.match_parent, 50);      private linearlayout.layoutparams mexpandedparams = new linearlayout.layoutparams(             viewgroup.layoutparams.match_parent, 200);      private coloredview(context context) {          super(context);          int red = (int)(math.random() * 128 + 127);         int green = (int)(math.random() * 128 + 127);         int blue = (int)(math.random() * 128 + 127);         int color = 0xff << 24 | (red << 16) |                 (green << 8) | blue;         setbackgroundcolor(color);          setlayoutparams(mcompressedparams);           setonclicklistener(new onclicklistener() {             @override             public void onclick(view v) {                 // size changes cause layouttransition animation if changing transition enabled                 setlayoutparams(mexpanded ? mcompressedparams : mexpandedparams);                 mexpanded = !mexpanded;                 requestlayout();              }         });     } } 

i have in oncreate method showing animations

layouttransition transition = eventcontainer.getlayouttransition();     transition.enabletransitiontype(layouttransition.changing); 

this xml has linearlayout in child views created in:

<linearlayout             android:orientation="vertical"             android:layout_width="match_parent"             android:layout_height="match_parent"             android:animatelayoutchanges="true"             android:id="@+id/eventcontainer">     </linearlayout> 

by adding button or edittext linearlayout treats entirely new view, allowing 1 object per. there way slam bunch of objects 1 layout?

i'm little confused on concept of getting context of views , layouts... misused somewhere in here.

you can't, @ least not in current code.

your coloredview class extends view, not support having own child views. if want add child views it, have create class extending viewgroup (or of viewgroup's subclasses).

once class extends viewgroup, can simple use addview() method add views, , align them passing layoutparams (you can create custom layoutparams if view requires complex positioning).