How to create a RelativeLayout programmatically with two buttons one on top of the other

Question

I m adding two buttons to the UI  but they appear on top of one another  I want them to appear next to each other  What am I missing in this code   m btnCrown   new ImageButton this   m btnCrown setImageResource R drawable king crown thumb   m btnCrown setAlpha 100    RelativeLayout LayoutParams lp   new RelativeLayout LayoutParams      RelativeLayout LayoutParams WRAP CONTENT  RelativeLayout LayoutParams WRAP CONTENT   lp addRule RelativeLayout ALIGN PARENT TOP     addContentView m btnCrown  lp     m btnMonkey   new ImageButton this   m btnMonkey setImageResource R drawable monkey small   m btnMonkey setAlpha 100    lp   new RelativeLayout LayoutParams      RelativeLayout LayoutParams WRAP CONTENT  RelativeLayout LayoutParams WRAP CONTENT   lp addRule RelativeLayout ALIGN PARENT TOP   lp addRule RelativeLayout RIGHT OF  m btnCrown getId         addContentView m btnMonkey  lp

User · Accepted Answer

Found the answer in How to lay out Views in RelativeLayout programmatically?

We should explicitly set id's using setId(). Only then, RIGHT_OF rules make sense.

Another mistake I did is, reusing the layoutparams object between the controls. We should create new object for each control

User · Answer

I have written a quick example to demonstrate how to create a layout programmatically   public class CodeLayout extends Activity         Override     public void onCreate Bundle savedInstanceState            super onCreate savedInstanceState               Creating a new RelativeLayout         RelativeLayout relativeLayout   new RelativeLayout this               Defining the RelativeLayout layout parameters             In this case I want to fill its parent         RelativeLayout LayoutParams rlp   new RelativeLayout LayoutParams                  RelativeLayout LayoutParams FILL PARENT                  RelativeLayout LayoutParams FILL PARENT               Creating a new TextView         TextView tv   new TextView this           tv setText  Test                Defining the layout parameters of the TextView         RelativeLayout LayoutParams lp   new RelativeLayout LayoutParams                  RelativeLayout LayoutParams WRAP CONTENT                  RelativeLayout LayoutParams WRAP CONTENT           lp addRule RelativeLayout CENTER IN PARENT               Setting the parameters on the TextView         tv setLayoutParams lp               Adding the TextView to the RelativeLayout as a child         relativeLayout addView tv               Setting the RelativeLayout as our content view         setContentView relativeLayout  rlp             In theory everything should be clear as it is commented  If you don t understand something just tell me

User · Answer

public class AndroidWalkthroughApp1 extends Activity implements View OnClickListener        final int TOP ID   3      final int BOTTOM ID   4           Called when the activity is first created          Override     public void onCreate Bundle savedInstanceState            super onCreate savedInstanceState           setContentView R layout main               create two layouts to hold buttons         RelativeLayout top   new RelativeLayout this           top setId TOP ID           RelativeLayout bottom   new RelativeLayout this           bottom setId BOTTOM ID               create buttons in a loop         for  int i   0  i  lt  2  i                  Button button   new Button this               button setText  Button     i                  R id won t be generated for us  so we need to create one             button setId i                   add our event handler  less memory than an anonymous inner class              button setOnClickListener this                   add generated button to view             if  i    0                    top addView button                             else                   bottom addView button                                    RelativeLayout root    RelativeLayout  findViewById R id root layout               add generated layouts to root layout view           LinearLayout root    LinearLayout this findViewById R id root layout            root addView top           root addView bottom               Override     public void onClick View v               show a message with the button s ID         Toast toast   Toast makeText AndroidWalkthroughApp1 this   You clicked button     v getId    Toast LENGTH LONG           toast show                get the parent layout and remove the clicked button         RelativeLayout parentLayout    RelativeLayout v getParent            parentLayout removeView v

[android] How to create a RelativeLayout programmatically with two buttons one on top of the other?

Examples related to android

Examples related to android-relativelayout