How to add a button dynamically in Android

Question

User · Answer

public void add btn          lin btn setWeightSum 3f       for  int j   0  j  lt  3  j              LinearLayout LayoutParams params1   new LinearLayout LayoutParams                  LayoutParams WRAP CONTENT  LayoutParams WRAP CONTENT           params1 setMargins 10  0  0  10           params1 weight   1 0f           LinearLayout ll          ll   new LinearLayout this           ll setGravity Gravity CENTER VERTICAL           ll setOrientation LinearLayout HORIZONTAL           ll setLayoutParams params1            final Button btn          btn   new Button DynamicActivity this            btn setText  A   j 1            btn setTextSize 15           btn setId j           btn setPadding 10  8  10  10            ll addView btn            lin btn addView ll             btn setOnClickListener new OnClickListener                  Override             public void onClick View v                     if v getId    0                                        txt text setText  Hii                     else if v getId    1                                        txt text setText  hello                     else if v getId    2                                        txt text setText  how r u

User · Answer

Button btn   new Button this   btn setText  Submit    LinearLayout linearLayout    LinearLayout findViewById R id buttonlayout   LayoutParams buttonlayout   new LayoutParams LayoutParams MATCH PARENT  LayoutParams WRAP CONTENT   linearLayout addView btn  buttonlayout

User · Answer

Button myButton   new Button this   myButton setId 123   myButton setText  Push Me      LinearLayout ll    LinearLayout findViewById R id buttonlayout   LayoutParams lp   new LayoutParams LayoutParams MATCH PARENT  LayoutParams WRAP CONTENT   ll addView myButton  lp    myButton setOnClickListener new View OnClickListener                 public void onClick View view                    Toast makeText DynamicLayout this                           Button clicked index       id   Toast LENGTH SHORT                           show

User · Answer

Try this code   Button btn new Button this   btn setId btn   btn setBackgroundResource R drawable image   btn setMinimumHeight 150   btn setMinimumWidth 150   Relativelayout addView btn

User · Answer

Button myButton   new Button this   myButton setText  Push Me     LinearLayout ll    LinearLayout findViewById R id buttonlayout   LayoutParams lp   new LayoutParams LayoutParams MATCH PARENT  LayoutParams WRAP CONTENT   ll addView myButton  lp     Have a look to this example

User · Answer

In mainactivity xml write    lt Button     android id    id search      android layout width  wrap content      android layout height  wrap content      android text  Search       android visibility  invisible   gt    In main java write   Button buttonSearch  buttonSearch    Button findViewById R id search   buttonSearch setVisibility View VISIBLE

User · Answer

try this    private void createLayoutDynamically int n         for  int i   0  i  lt  n  i              Button myButton   new Button this           myButton setText  Button    i           myButton setId i           final int id    myButton getId             LinearLayout layout    LinearLayout  findViewById R id myDynamicLayout           layout addView myButton            myButton setOnClickListener new View OnClickListener                 public void onClick View view                    Toast makeText DynamicLayout this                           Button clicked index       id   Toast LENGTH SHORT                           show

User · Answer

for  int k   1  k  lt  100  k          TableRow row   new TableRow this        innerloop      for  int l   1  l  lt  4  l              btn   new Button this           TableRow LayoutParams tr   new TableRow LayoutParams LayoutParams WRAP CONTENT  LayoutParams WRAP CONTENT           layout setWeightSum 12 0f           tr weight   0          btn setLayoutParams tr            btn setTextColor a           btn setHeight 150            btn setWidth 150           btn setId idb           btn setText  Button     idb           row addView btn

User · Answer

Try this code  It will work fine    public class DynamicViewsActivity extends Activity    Button button   Override public void onCreate Bundle savedInstanceState        super onCreate savedInstanceState         setContentView R layout activity dynamic views       ScrollView scrl new ScrollView this       final LinearLayout ll new LinearLayout this       ll setOrientation LinearLayout HORIZONTAL       LinearLayout LayoutParams layoutParams   new LinearLayout LayoutParams              LinearLayout LayoutParams WRAP CONTENT  LinearLayout LayoutParams WRAP CONTENT       layoutParams setMargins 100  500  100  200       scrl addView ll       Button add btn new Button this       add btn setText  Click Here         ll addView add btn  layoutParams         final Context context   this       add btn setOnClickListener new OnClickListener               Override         public void onClick View v                   TODO Auto-generated method stub              Intent intent   new Intent context  App2Activity class               startActivity intent                         this setContentView scrl

User · Answer

Try this   LinearLayout ll    LinearLayout findViewById R id layout    Button btn   new Button this   btn setText  Manual Add    btn setLayoutParams new LayoutParams LayoutParams MATCH PARENT  LayoutParams WRAP CONTENT    ll addView btn

User · Answer

I ve used this  or very similar  code to add several TextViews to a LinearLayout      Quick  amp  dirty pre-made list of text labels    String names       alpha    beta    gamma    delta    epsilon    int namesLength   5      Create a LayoutParams    LinearLayout LayoutParams params   new LinearLayout LayoutParams      LinearLayout LayoutParams WRAP CONTENT       LinearLayout LayoutParams FILL PARENT       Get existing UI containers    LinearLayout nameButtons    LinearLayout  view findViewById R id name buttons   TextView label    TextView  view findViewById R id master label    TextView tv   for  int i   0  i  lt  namesLength  i             Grab the name for this  button      final String name   names i        tv   new TextView context       tv setText name           TextViews CAN have OnClickListeners     tv setOnClickListener new View OnClickListener              Override         public void onClick View v                label setText  Clicked button for     name                           nameButtons addView tv  params       The main difference between this and dicklaw795 s code is it doesn t set   and re-get   the ID for each TextView--I found it unnecessary  although I may need it to later identify each button in a common handler routine  e g  one called by onClick   for each TextView

User · Answer

You could create a base layout for your button and dynamically change only what is specific  like this project I made to run different exercises from a Material Design course I m taking    In this example  I use a preconfigured AppCompatButton   layout base button xml   lt android support v7 widget AppCompatButton     xmlns android  http   schemas android com apk res android      android id    id btn base      android layout width  200dp      android layout height  wrap content      android layout gravity  center      android layout marginTop  8dp      style   style RaisedButton       gt    lt  android support v7 widget AppCompatButton gt     lt style name  RaisedButton  parent  Widget AppCompat Button Colored  gt       lt item name  android textSize  gt 11sp lt  item gt       lt item name  android textStyle  gt bold lt  item gt   lt  style gt    And in the MainActivity I created some instances and changed what I need  like the button text and onClick event     lt ScrollView     xmlns android  http   schemas android com apk res android      xmlns app  http   schemas android com apk res-auto      xmlns tools  http   schemas android com tools      android layout width  match parent      android layout height  match parent      tools context  udemy android materialdesign MainActivity  gt        lt LinearLayout         android id    id base layout          android layout width  match parent          android layout height  wrap content          android orientation  vertical           gt        lt  LinearLayout gt     lt  ScrollView gt     public class MainActivity extends AppCompatActivity          Override     protected void onCreate Bundle savedInstanceState            super onCreate savedInstanceState           setContentView R layout activity main           LinearLayout baseLayout   findViewById R id base layout            baseLayout addView createButton  TextFields   baseLayout                  view - gt  startActivity createIntent TextFieldsActivity class                        baseLayout addView createButton  Buttons   baseLayout                  view - gt  startActivity createIntent ButtonsActivity class                        baseLayout addView createButton  Toolbar   baseLayout                  view - gt  startActivity createIntent ToolbarActivity class                           private View createButton String text  LinearLayout baseLayout  View OnClickListener onClickEvent            View inflated   LayoutInflater from this  inflate R layout layout base button  baseLayout  false           AppCompatButton btnBase   inflated findViewById R id btn base            btnBase setText text           btnBase setOnClickListener onClickEvent           return btnBase             private Intent createIntent Class lt   gt  cls            return new Intent this  cls             Sorry for being late

User · Answer

try this   for  int i   1  i  lt   20  i          LinearLayout LayoutParams params   new LinearLayout LayoutParams              LinearLayout LayoutParams MATCH PARENT              LinearLayout LayoutParams WRAP CONTENT       Button btn   new Button this       btn setId i       final int id    btn getId        btn setText  button     id        btn setBackgroundColor Color rgb 70  80  90        linear addView btn  params       btn1     Button  findViewById id         btn1 setOnClickListener new View OnClickListener             public void onClick View view                Toast makeText view getContext                         Button clicked index       id   Toast LENGTH SHORT                       show

User · Answer

Actually I add to the xml layout file anything that could be used  Then from the source code of the specific Activity I get the object by its id and I  play  with the visibility method   Here is an example     Spinner findViewById R id email spinner   setVisibility View GONE

User · Answer

Check this up   LinearLayout ll Main    new LinearLayout getActivity     LinearLayout ll Row01   new LinearLayout getActivity     LinearLayout ll Row02   new LinearLayout getActivity      ll Main setOrientation LinearLayout VERTICAL   ll Row01 setOrientation LinearLayout HORIZONTAL   ll Row02 setOrientation LinearLayout HORIZONTAL    final Button button01      new Button getActivity     final Button button02      new Button getActivity        final Button button03      new Button getActivity     final Button button04      new Button getActivity      ll Row01 addView button01   ll Row01 addView button02    ll Row02 addView button03   ll Row02 addView button04    ll Main addView ll Row01   ll Main addView ll Row02    button04 setVisibility View INVISIBLE   button04 setVisibility View VISIBLE

User · Answer

Try following code   LinearLayout layout    LinearLayout  findViewById R id llayout    layout setOrientation LinearLayout VERTICAL    Button btn   new Button this   btn setText  Button1     layout add btn    btn   new Button this   btn setText Button2   layout add btn     like this you add Buttons as per your requirements

User · Answer

If you want to add dynamically buttons try this   public class MainActivity extends Activity    Override protected void onCreate Bundle savedInstanceState        super onCreate savedInstanceState       setContentView R layout activity main2       for  int i   1  i  lt   5  i              LinearLayout layout    LinearLayout  findViewById R id myLinearLayout           layout setOrientation LinearLayout VERTICAL           Button btn   new Button this           btn setText                  layout addView btn

[android] How to add a button dynamically in Android?

Examples related to android