How to set RelativeLayout layout params in code not in xml

Question

For example I want to add 3 buttons on screen  one align left  one align center  last one align right   How can I set their layout in code  not in xml

User · Accepted Answer

Just a basic example   RelativeLayout LayoutParams params   new RelativeLayout LayoutParams RelativeLayout LayoutParams WRAP CONTENT  RelativeLayout LayoutParams WRAP CONTENT   params addRule RelativeLayout ALIGN PARENT LEFT  RelativeLayout TRUE   Button button1  button1 setLayoutParams params    params   new RelativeLayout LayoutParams RelativeLayout LayoutParams WRAP CONTENT  RelativeLayout LayoutParams WRAP CONTENT   params addRule RelativeLayout RIGHT OF  button1 getId     Button button2  button2 setLayoutParams params     As you can see  this is what you have to do    Create a RelativeLayout LayoutParams object  Use addRule int  or addRule int  int  to set the rules  The first method is used to add rules that don t require values  Set the parameters to the view  in this case  to each button

User · Answer

RelativeLayout layout   new RelativeLayout this       RelativeLayout LayoutParams labelLayoutParams   new RelativeLayout LayoutParams              LayoutParams FILL PARENT  LayoutParams FILL PARENT       layout setLayoutParams labelLayoutParams           If you want to add some controls in this Relative Layout     labelLayoutParams   new RelativeLayout LayoutParams              LayoutParams WRAP CONTENT  LayoutParams WRAP CONTENT       labelLayoutParams addRule RelativeLayout CENTER IN PARENT         ImageView mImage   new ImageView this       mImage setBackgroundResource R drawable popupnew bg               layout addView mImage labelLayoutParams        setContentView layout

User · Answer

Something like this     RelativeLayout linearLayout    RelativeLayout  findViewById R id widget43                      ListView listView    ListView  findViewById R id ListView01                    LayoutInflater inflater    LayoutInflater  this                          getSystemService Context LAYOUT INFLATER SERVICE                      View footer   inflater inflate R layout footer  null                   View footer   LayoutInflater from this  inflate R layout footer                          null                   final RelativeLayout LayoutParams layoutParams   new RelativeLayout LayoutParams                          RelativeLayout LayoutParams FILL PARENT                          RelativeLayout LayoutParams FILL PARENT                   layoutParams addRule RelativeLayout ALIGN PARENT BOTTOM  1   footer setLayoutParams layoutParams

User · Answer

I hope the below code will help  It will create an EditText and a Log In button  Both placed relatively  All done in MainActivity java   package com example atul allison  import android support v7 app AppCompatActivity  import android os Bundle  import android widget RelativeLayout  import android widget Button  import android graphics Color  import android widget EditText  import android content res Resources  import android util TypedValue           public class MainActivity extends AppCompatActivity             Override         protected void onCreate Bundle savedInstanceState                super onCreate savedInstanceState                 Layout             RelativeLayout atulsLayout   new RelativeLayout this               atulsLayout setBackgroundColor Color GREEN                  Button             Button redButton   new Button this               redButton setText  Log In                redButton setBackgroundColor Color RED                  Username input             EditText username    new EditText this                redButton setId 1               username setId 2                RelativeLayout LayoutParams buttonDetails  new RelativeLayout LayoutParams                      RelativeLayout LayoutParams WRAP CONTENT                      RelativeLayout LayoutParams WRAP CONTENT                             RelativeLayout LayoutParams usernameDetails  new RelativeLayout LayoutParams                      RelativeLayout LayoutParams WRAP CONTENT                      RelativeLayout LayoutParams WRAP CONTENT                               give rules to position widgets             usernameDetails addRule RelativeLayout ABOVE redButton getId                 usernameDetails addRule RelativeLayout CENTER HORIZONTAL               usernameDetails setMargins 0 0 0 50                buttonDetails addRule RelativeLayout CENTER HORIZONTAL               buttonDetails addRule RelativeLayout CENTER VERTICAL                Resources r   getResources                int px    int  TypedValue applyDimension TypedValue COMPLEX UNIT DIP  200 r getDisplayMetrics                 username setWidth px                  Add widget to layout button is now a child of layout              atulsLayout addView redButton buttonDetails               atulsLayout addView username usernameDetails                  Set these activities content display to this view             setContentView atulsLayout

User · Answer

How about you just pull the layout params from the view itself if you created it      RelativeLayout findViewById R id imageButton1   getLayoutParams

[android] How to set RelativeLayout layout params in code not in xml?

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