How to programmatically set style attribute in a view

Question

I m getting a view from the XML with the code below    Button view    Button  LayoutInflater from this  inflate R layout section button  null     I would like to set a  style  for the button how can I do that in java since a want to use several style for each button I will use

User · Accepted Answer

Generally you can t change styles programmatically  you can set the look of a screen  or part of a layout  or individual button in your XML layout using themes or styles   Themes can  however  be applied programmatically   There is also such a thing as a StateListDrawable which lets you define different drawables for each state the your Button can be in  whether focused  selected  pressed  disabled and so on   For example  to get your button to change colour when it s pressed  you could define an XML file called res drawable my button xml directory like this    lt  xml version  1 0  encoding  utf-8   gt   lt selector xmlns android  http   schemas android com apk res android  gt     lt item     android state pressed  true      android drawable   drawable btn pressed    gt     lt item     android state pressed  false      android drawable   drawable btn normal    gt   lt  selector gt    You can then apply this selector to a Button by setting the property android background   drawable my button

User · Answer

If you are using the Support library  you could simply use  TextViewCompat setTextAppearance textView  R style AppTheme TextStyle ButtonDefault Whatever     for TextViews and Buttons  There are similar classes for the rest of Views  -

User · Answer

Yes  you can use for example in a button   Button b   new Button this   b setBackgroundResource R drawable selector test

User · Answer

Depending on what style attributes you d like to change you may be able to use the Paris library   Button view    Button  LayoutInflater from this  inflate R layout section button  null   Paris style view  apply R style YourStyle     Many attributes like background  padding  textSize  textColor  etc  are supported    List of currently supported attributes Installation instructions   Disclaimer  I authored the library

User · Answer

I faced the same problem recently  here is how i solved it    lt  xml version  1 0  encoding  utf-8   gt   lt RelativeLayout xmlns android  http   schemas android com apk res android  android layout width  match parent  android layout height  match parent  gt        lt  -- This is the special two colors background START   after this LinearLayout  you can add all view that have it for main background-- gt       lt LinearLayout     android layout width  match parent      android layout height  match parent       android weightSum  2       android background   FFFFFF      android orientation  horizontal       gt        lt View         android layout width  match parent          android layout height  match parent          android layout weight  1          android background   0000FF    gt        lt View         android layout width  match parent          android layout height  match parent          android layout weight  1          android background   F000F0    gt       lt  LinearLayout gt       lt  -- This is the special two colors background END-- gt       lt TextView     android layout width  match parent      android layout height  wrap content      android layout centerInParent  true      android gravity  center      android text  This Text is centered with a special backgound      You can add as much elements as you want as child of this RelativeLayout      android textColor   FFFFFF      android textSize  20sp    gt   lt  RelativeLayout gt     I used a LinearLayout with android weightSum  2   I gave to the two child elements android layout weight  1   I gave each 50  of the parent space width  amp  height   And finally  i gave the two child element different background colors to have the final effect    Thanks

User · Answer

For anyone looking for a Material answer see this SO post  Coloring Buttons in Android with Material Design and AppCompat  I used a combination of this answer to set the default text color of the button to white for my button   https   stackoverflow com a 32238489 3075340  Then this answer https   stackoverflow com a 34355919 3075340 to programmatically set the background color  The code for that is   ViewCompat setBackgroundTintList your colored button   ContextCompat getColorStateList getContext   R color your custom color      your colored button can be just a regular Button or a AppCompat button if you wish - I tested the above code with both types of buttons and it works   EDIT  I found that pre-lollipop devices do not work with the above code  See this post on how to add support for pre-lollipop devices  https   stackoverflow com a 30277424 3075340  Basically do this   Button b    Button  findViewById R id button   ColorStateList c   ContextCompat getColorStateList mContext  R color your custom color  Drawable d   b getBackground    if  b instanceof AppCompatButton           appcompat button replaces tint of its drawable background       AppCompatButton b  setSupportBackgroundTintList c     else if  Build VERSION SDK INT  gt   Build VERSION CODES LOLLIPOP           Lollipop button replaces tint of its drawable background        however it is not equal to d setTintList c      b setBackgroundTintList c     else          this should only happen if           manually creating a Button instead of AppCompatButton          LayoutInflater did not translate a Button to AppCompatButton     d   DrawableCompat wrap d       DrawableCompat setTintList d  c       b setBackgroundDrawable d

User · Answer

At runtime  you know what style you want your button to have  So beforehand  in xml in the layout folder  you can have all ready to go buttons with the styles you need  So in the layout folder  you might have a file named  button style 1 xml  The contents of that file might look like    lt  xml version  1 0  encoding  utf-8   gt   lt Button     android id    id styleOneButton      style   style FirstStyle    gt    If you are working with fragments  then in onCreateView you inflate that button  like   Button firstStyleBtn    Button  inflater inflate R layout button style 1  container  false     where container is the ViewGroup container associated with the onCreateView method you override when creating your fragment    Need two more such buttons  You create them like this   Button secondFirstStyleBtn    Button  inflater inflate R layout button style 1  container  false   Button thirdFirstStyleBtn    Button  inflater inflate R layout button style 1  container  false     You can customize those buttons   secondFirstStyleBtn setText  My Second    thirdFirstStyleBtn setText  My Third      Then you add your customized  stylized buttons to the layout container you also inflated in the onCreateView method    stylizedButtonsContainer    LinearLayout  rootView findViewById R id stylizedButtonsContainer     stylizedButtonsContainer addView firstStyleBtn    stylizedButtonsContainer addView secondFirstStyleBtn    stylizedButtonsContainer addView thirdFirstStyleBtn     And that s how you can dynamically work with stylized buttons

User · Answer

You can do style attributes like so    Button myButton   new Button this  null android R attr buttonBarButtonStyle     in place of     lt Button     android layout width  wrap content      android layout height  wrap content      android id    id btn      style   android attr buttonBarButtonStyle         gt

User · Answer

First of all  you don t need to use a layout inflater to create a simple Button  You can just use  button   new Button context    If you want to style the button you have 2 choices  the simplest one is to just specify all the elements in code  like many of the other answers suggest  button setTextColor Color RED   button setTextSize TypedValue COMPLEX UNIT SP  18    The other option is to define the style in XML  and apply it to the button  In the general case  you can use a ContextThemeWrapper for this  ContextThemeWrapper newContext   new ContextThemeWrapper baseContext  R style MyStyle   button   new Button newContext    To change the text-related attributes on a TextView  or its subclasses like Button  there is a special method  button setTextAppearance R style MyTextStyle    Or  if you need to support devices pre API-23  Android 6 0  button setTextAppearance context  R style MyTextStyle    This method cannot be used to change all attributes  for example to change padding you need to use a ContextThemeWrapper  But for text color  size  etc  you can use setTextAppearance

User · Answer

The answer by  Dayerman and  h rules is right   To give an elaborated example with code  In drawable folder  create an xml file called button disabled xml   lt  xml version  1 0  encoding  utf-8   gt   lt shape xmlns android  http   schemas android com apk res android  android shape  rectangle  android padding  10dp  gt       lt solid android color   color silver   gt   lt corners    android bottomRightRadius  20dp     android bottomLeftRadius  20dp     android topLeftRadius  20dp     android topRightRadius  20dp   gt   lt  shape gt    Then in Java     Button  findViewById R id my button   setEnabled false     Button  findViewById R id my button   setBackgroundResource R drawable button disabled     This will set the button s property to disabled and sets the color to silver    The color is defined in color xml as      lt resources gt        lt color name  silver  gt  C0C0C0 lt  color gt    lt  resources gt

User · Answer

I made a helper interface for this using the holder pattern   public interface StyleHolder lt V extends View gt        void applyStyle V view       Now for every style you want to use pragmatically just implement the interface  for example   public class ButtonStyleHolder implements StyleHolder lt Button gt         private final Drawable background      private final ColorStateList textColor      private final int textSize       public ButtonStyleHolder Context context            TypedArray ta   context obtainStyledAttributes R style button  R styleable ButtonStyleHolder            Resources resources   context getResources             background   ta getDrawable ta getIndex R styleable ButtonStyleHolder android background             textColor   ta getColorStateList ta getIndex R styleable ButtonStyleHolder android textColor             textSize   ta getDimensionPixelSize                  ta getIndex R styleable ButtonStyleHolder android textSize                   resources getDimensionPixelSize R dimen standard text size                         Don t forget to recycle          ta recycle                Override     public void applyStyle Button btn            btn setBackground background           btn setTextColor textColor           btn setTextSize TypedValue COMPLEX UNIT PX  textSize             Declare a stylable in your attrs xml  the styleable for this example is    lt declare-styleable name  ButtonStyleHolder  gt       lt attr name  android background    gt       lt attr name  android textSize    gt       lt attr name  android textColor    gt   lt  declare-styleable gt    Here is the style declared in styles xml    lt style name  button  gt       lt item name  android background  gt  drawable button lt  item gt       lt item name  android textColor  gt  color light text color lt  item gt       lt item name  android textSize  gt  dimen standard text size lt  item gt   lt  style gt    And finally the implementation of the style holder   Button btn   new Button context       StyleHolder lt Button gt  styleHolder   new ButtonStyleHolder context   styleHolder applyStyle btn     I found this very helpful as it can be easily reused and keeps the code clean and verbose  i would recommend using this only as a local variable so we can allow the garbage collector to do its job once we re done with setting all the styles

[android] How to programmatically set style attribute in a view

Examples related to android

Examples related to styles