How to make layout with rounded corners

Question

How can I make a layout with rounded corners  I want to apply rounded corners to my LinearLayout

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For API 21   Use Clip Views Rounded outline clipping was added to the View class in API 21  See this training doc or this reference for more info  This in-built feature makes rounded corners very easy to implement  It works on any view or layout and supports proper clipping  Here s What To Do   Create a rounded shape drawable and set it as your view s background  android background  quot  drawable round outline quot  Clip to outline in code  setClipToOutline true   The documentation used to say that you can set android clipToOutline  quot true quot  the XML  but this bug is now finally resolved and the documentation now correctly states that you can only do this in code  What It Looks Like   Special Note About ImageViews setClipToOutline   only works when the View s background is set to a shape drawable  If this background shape exists  View treats the background s outline as the borders for clipping and shadowing purposes  This means that if you want to round the corners on an ImageView with setClipToOutline    your image must come from android src instead of android background  since background is used for the rounded shape   If you MUST use background to set your image instead of src  you can use this nested views workaround   Create an outer layout with its background set to your shape drawable Wrap that layout around your ImageView  with no padding  The ImageView  including anything else in the layout  will now be clipped to the outer layout s rounded shape

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I ve taken  gauravsapiens answer with my comments inside to give you a reasonable apprehension of what the parameters will effect    lt  xml version  1 0  encoding  utf-8   gt   lt shape xmlns android  http   schemas android com apk res android  gt        lt  -- Background color -- gt       lt solid android color   color white    gt        lt  -- Stroke around the background  width and color -- gt       lt stroke android width  4dp  android color   color drop shadow   gt        lt  -- The corners of the shape -- gt       lt corners android radius  4dp   gt        lt  -- Padding for the background  e g the Text inside a TextView will be      located differently -- gt       lt padding android left  10dp  android right  10dp                android bottom  10dp  android top  10dp    gt    lt  shape gt    If you re just looking to create a shape that rounds the corners  removing the padding and the stroke will do  If you remove the solid as well you will  in effect  have created rounded corners on a transparent background   For the sake of being lazy I have created a shape underneath  which is just a solid white background with rounded corners - enjoy       lt  xml version  1 0  encoding  utf-8   gt   lt shape xmlns android  http   schemas android com apk res android  gt        lt  -- Background color -- gt       lt solid android color   color white    gt        lt  -- The corners of the shape -- gt       lt corners android radius  4dp   gt    lt  shape gt

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You can do it with a custom view  like this RoundAppBar and RoundBottomAppBar  Here a path is used to clipPath the canvas

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1  Define layout bg xml in drawables    lt  xml version  1 0  encoding  UTF-8   gt   lt shape xmlns android  http   schemas android com apk res android  gt       lt solid android color   FFFFFF   gt       lt stroke android width  3dp  android color   B1BCBE    gt       lt corners android radius  10dp   gt       lt padding android left  0dp  android top  0dp  android right  0dp  android bottom  0dp    gt   lt  shape gt    2  Add layout bg xml as background to your layout  android background   drawable layout bg

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lt shape xmlns android  http   schemas android com apk res android  android padding   dimen  10sdp  android shape  rectangle  gt    lt solid android color   color header    gt    lt corners     android bottomLeftRadius   dimen  5sdp      android bottomRightRadius   dimen  5sdp      android topLeftRadius   dimen  5sdp      android topRightRadius   dimen  5sdp    gt

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Try this     1 create drawable xml custom layout xml     lt  xml version  1 0  encoding  utf-8   gt   lt shape xmlns android  http   schemas android com apk res android   gt    lt solid android color   FFFFFF    gt    lt stroke     android width  2dp      android color   FF785C    gt    lt corners android radius  10dp    gt    lt  shape gt    2 add your view background  android background   drawable custom layout

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If you would like to make your layout rounded  it is best to use the CardView  it provided many features to make the design beautiful    lt android support v7 widget CardView     android layout width  match parent      android layout height  wrap content      card view cardCornerRadius  5dp  gt         lt LinearLayout             android layout width  match parent              android layout height  wrap content  gt                lt TextView                 android layout width  0dp                  android layout height  wrap content                  android layout weight   3                  android text   string quote code                  android textColor   color white                  android textSize   dimen text head size    gt         lt  LinearLayout gt   lt  android support v7 widget CardView gt    With this card view cardCornerRadius  5dp   you can change the radius

User · Answer

I think a better way to do it is to merge 2 things    make a bitmap of the layout  as shown here  make a rounded drawable from the bitmap  as shown here  set the drawable on an imageView    This will handle cases that other solutions have failed to solve  such as having content that has corners   I think it s also a bit more GPU-friendly  as it shows a single layer instead of 2    The only better way is to make a totally customized view  but that s a lot of code and might take a lot of time  I think that what I suggested here is the best of both worlds   Here s a snippet of how it can be done   RoundedCornersDrawable java         shows a bitmap as if it had rounded corners  based on      http   rahulswackyworld blogspot co il 2013 04 android-drawables-with-rounded 7 html    easy alternative from support library  RoundedBitmapDrawableFactory create              public class RoundedCornersDrawable extends BitmapDrawable        private final BitmapShader bitmapShader      private final Paint p      private final RectF rect      private final float borderRadius       public RoundedCornersDrawable final Resources resources  final Bitmap bitmap  final float borderRadius            super resources  bitmap           bitmapShader   new BitmapShader getBitmap    Shader TileMode CLAMP  Shader TileMode CLAMP           final Bitmap b   getBitmap            p   getPaint            p setAntiAlias true           p setShader bitmapShader           final int w   b getWidth    h   b getHeight            rect   new RectF 0  0  w  h           this borderRadius   borderRadius  lt  0   0 15f   Math min w  h    borderRadius              Override     public void draw final Canvas canvas            canvas drawRoundRect rect  borderRadius  borderRadius  p             CustomView java  public class CustomView extends ImageView       private View mMainContainer      private boolean mIsDirty false          TODO for each change of views content  set mIsDirty to true and call invalidate       Override     protected void onDraw final Canvas canvas            if  mIsDirty                mIsDirty   false              drawContent                return                    super onDraw canvas                         draws the view s content to a bitmap  code based on          http   nadavfima com android-snippet-inflate-a-layout-draw-to-a-bitmap              public static Bitmap drawToBitmap final View viewToDrawFrom  final int width  final int height               Create a new bitmap and a new canvas using that bitmap         final Bitmap bmp   Bitmap createBitmap width  height  Bitmap Config ARGB 8888           final Canvas canvas   new Canvas bmp           viewToDrawFrom setDrawingCacheEnabled true              Supply measurements         viewToDrawFrom measure MeasureSpec makeMeasureSpec canvas getWidth    MeasureSpec EXACTLY                   MeasureSpec makeMeasureSpec canvas getHeight    MeasureSpec EXACTLY               Apply the measures so the layout would resize before drawing          viewToDrawFrom layout 0  0  viewToDrawFrom getMeasuredWidth    viewToDrawFrom getMeasuredHeight                and now the bmp object will actually contain the requested layout         canvas drawBitmap viewToDrawFrom getDrawingCache    0  0  new Paint             return bmp             private void drawContent             if  getMeasuredWidth    lt   0    getMeasuredHeight    lt   0              return          final Bitmap bitmap   drawToBitmap mMainContainer  getMeasuredWidth    getMeasuredHeight             final RoundedCornersDrawable drawable   new RoundedCornersDrawable getResources    bitmap  15           setImageDrawable drawable                EDIT  found a nice alternative  based on  RoundKornersLayouts  library  Have a class that will be used for all of the layout classes you wish to extend  to be rounded     based on https   github com JcMinarro RoundKornerLayouts class CanvasRounder cornerRadius  Float  cornerStrokeColor  Int   0  cornerStrokeWidth  Float   0F        private val path   android graphics Path       private lateinit var rectF  RectF     private var strokePaint  Paint      var cornerRadius  Float   cornerRadius         set value                field   value             resetPath                  init           if  cornerStrokeWidth  lt   0              strokePaint   null         else               strokePaint   Paint               strokePaint   style   Paint Style STROKE             strokePaint   isAntiAlias   true             strokePaint   color   cornerStrokeColor             strokePaint   strokeWidth   cornerStrokeWidth                      fun round canvas  Canvas  drawFunction   Canvas  - gt  Unit            val save   canvas save           canvas clipPath path          drawFunction canvas          if  strokePaint    null              canvas drawRoundRect rectF  cornerRadius  cornerRadius  strokePaint          canvas restoreToCount save             fun updateSize currentWidth  Int  currentHeight  Int            rectF   android graphics RectF 0f  0f  currentWidth toFloat    currentHeight toFloat            resetPath              private fun resetPath             path reset           path addRoundRect rectF  cornerRadius  cornerRadius  Path Direction CW          path close              Then  in each of your customized layout classes  add code similar to this one   class RoundedConstraintLayout   ConstraintLayout       private lateinit var canvasRounder  CanvasRounder      constructor context  Context    super context            init context  null  0             constructor context  Context  attrs  AttributeSet    super context  attrs            init context  attrs  0             constructor context  Context  attrs  AttributeSet  defStyle  Int    super context  attrs  defStyle            init context  attrs  defStyle             private fun init context  Context  attrs  AttributeSet   defStyle  Int            val array   context obtainStyledAttributes attrs  R styleable RoundedCornersView  0  0          val cornerRadius   array getDimension R styleable RoundedCornersView corner radius  0f          val cornerStrokeColor   array getColor R styleable RoundedCornersView corner stroke color  0          val cornerStrokeWidth   array getDimension R styleable RoundedCornersView corner stroke width  0f          array recycle           canvasRounder   CanvasRounder cornerRadius cornerStrokeColor cornerStrokeWidth          if  Build VERSION SDK INT  lt  Build VERSION CODES JELLY BEAN MR2                setLayerType FrameLayout LAYER TYPE SOFTWARE  null                       override fun onSizeChanged currentWidth  Int  currentHeight  Int  oldWidth  Int  oldheight  Int            super onSizeChanged currentWidth  currentHeight  oldWidth  oldheight          canvasRounder updateSize currentWidth  currentHeight             override fun draw canvas  Canvas    canvasRounder round canvas    super draw canvas         override fun dispatchDraw canvas  Canvas    canvasRounder round canvas    super dispatchDraw canvas         If you wish to support attributes  use this as written on the library    lt resources gt     lt declare-styleable name  RoundedCornersView  gt         lt attr name  corner radius  format  dimension   gt         lt attr name  corner stroke width  format  dimension   gt         lt attr name  corner stroke color  format  color   gt     lt  declare-styleable gt   lt  resources gt      Another alternative  which might be easier for most uses  use MaterialCardView   It allows customizing the rounded corners  stroke color and width  and elevation   Example    lt FrameLayout     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  android clipChildren  false  android clipToPadding  false      tools context   MainActivity  gt        lt com google android material card MaterialCardView         android layout width  100dp  android layout height  100dp  android layout gravity  center          app cardCornerRadius  8dp  app cardElevation  8dp  app strokeColor   f00  app strokeWidth  2dp  gt            lt ImageView             android layout width  match parent  android layout height  match parent  android background   0f0   gt        lt  com google android material card MaterialCardView gt    lt  FrameLayout gt    And the result     Do note that there is a slight artifacts issue at the edges of the stroke  leaves some pixels of the content there   if you use it  You can notice it if you zoom in  I ve reported about this issue here   EDIT  seems to be fixed  but not on the IDE  Reported here

User · Answer

A better way to do it would be   background activity xml   lt  xml version  1 0  encoding  UTF-8   gt   lt layer-list xmlns android  http   schemas android com apk res android  gt       lt item android gravity  fill  gt           lt color android color   color black   gt       lt  item gt       lt item gt           lt shape android gravity  fill  gt               lt solid android color   color white   gt               lt corners android radius  10dip   gt               lt padding android left  0dip  android top  0dip  android right  0dip  android bottom  0dip    gt           lt  shape gt       lt  item gt   lt  layer-list gt    This will work below API 21 also  and give you something like this       If you are willing to make a little more effort more better control  then use android support v7 widget CardView with its cardCornerRadius attribute  and set elevation attribute to 0dp to get rid of any accompanying drop shadow with the cardView   Also  this will work from API level as low as 15

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With the Material Components Library you can use the MaterialShapeDrawable to draw custom shapes   Just put the LinearLayout in your xml layout    lt LinearLayout     android id    id linear rounded      android layout width  match parent      android layout height  wrap content         gt        lt  -- content       -- gt    lt  LinearLayout gt    Then in your code you can apply a ShapeAppearanceModel  Something like   float radius   getResources   getDimension R dimen default corner radius    LinearLayout linearLayout  findViewById R id linear rounded   ShapeAppearanceModel shapeAppearanceModel   new ShapeAppearanceModel        toBuilder        setAllCorners CornerFamily ROUNDED radius       build     MaterialShapeDrawable shapeDrawable   new MaterialShapeDrawable shapeAppearanceModel     Fill the LinearLayout with your color shapeDrawable setFillColor ContextCompat getColorStateList this R color secondaryLightColor      ViewCompat setBackground linearLayout shapeDrawable       Note   it requires the version 1 1 0 of the material components library

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Use CardView in android v7 support library  Though it s a bit heavy  it solves all problem  and easy enough  Not like the set drawable background method  it could clip subviews successfully    lt  xml version  1 0  encoding  utf-8   gt   lt android support v7 widget CardView xmlns android  http   schemas android com apk res android      xmlns card view  http   schemas android com apk res-auto      xmlns tools  http   schemas android com tools      android layout width  match parent      android layout height  wrap content      card view cardBackgroundColor   android color transparent      card view cardCornerRadius  5dp      card view cardElevation  0dp      card view contentPadding  0dp  gt       lt YOUR LINEARLAYOUT HERE gt   lt  android support v7 widget CardView gt

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Use CardView to get rounded edges for any layouts   Use card view cardCornerRadius  5dp  for cardview to get rounded layout edges    lt LinearLayout xmlns android  http   schemas android com apk res android    xmlns card view  http   schemas android com apk res-auto    android layout width  match parent    android layout height  match parent    android orientation  vertical  gt          lt android support v7 widget CardView         android layout width  match parent          android layout height  wrap content          card view cardCornerRadius  5dp  gt             lt LinearLayout                 android layout width  match parent                  android layout height  wrap content                  android orientation  horizontal                  android padding  15dp                  android weightSum  1  gt                    lt TextView                     android layout width  0dp                      android layout height  wrap content                      android layout weight   3                      android text   string quote code                      android textColor   color white                      android textSize   dimen text head size    gt                    lt TextView                     android layout width  0dp                      android layout height  wrap content                      android layout weight   7                      android text   string quote details                      android textColor   color white                      android textSize   dimen text head size    gt               lt  LinearLayout gt          lt  android support v7 widget CardView gt      lt  LinearLayout gt

User · Answer

Here s a copy of a XML file  to create a drawable with a white background  black border and rounded corners       lt  xml version  1 0  encoding  UTF-8   gt        lt shape xmlns android  http   schemas android com apk res android  gt            lt solid android color   ffffffff   gt                lt stroke android width  3dp                  android color   ff000000                    gt            lt padding android left  1dp                   android top  1dp                   android right  1dp                   android bottom  1dp                     gt             lt corners android bottomRightRadius  7dp  android bottomLeftRadius  7dp            android topLeftRadius  7dp  android topRightRadius  7dp   gt        lt  shape gt    save it as a xml file in the drawable directory  Use it like you would use any drawable background icon or resource file  using its resource name  R drawable your xml name

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Create your xml in drawable  layout background xml    lt  xml version  1 0  encoding  utf-8   gt       lt shape xmlns android  http   schemas android com apk res android   gt         lt solid android color   color your colour    gt         lt stroke             android width  2dp              android color   color your colour    gt         lt corners android radius  10dp    gt             lt  shape gt    lt --width  color  radius should be as per your requirement-- gt    and then  add this in your layout xml   android background   drawable layout background

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Function for set corner radius programmatically  static void setCornerRadius GradientDrawable drawable  float topLeft          float topRight  float bottomRight  float bottomLeft        drawable setCornerRadii new float     topLeft  topLeft  topRight  topRight              bottomRight  bottomRight  bottomLeft  bottomLeft        static void setCornerRadius GradientDrawable drawable  float radius        drawable setCornerRadius radius       Using  GradientDrawable gradientDrawable   new GradientDrawable    gradientDrawable setColor Color GREEN   setCornerRadius gradientDrawable  20f     or setCornerRadius gradientDrawable  20f  40f  60f  80f     view setBackground gradientDrawable

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lt  xml version  1 0  encoding  UTF-8   gt   lt shape xmlns android  http   schemas android com apk res android  gt       lt solid android color   FFFFFF   gt       lt stroke android width  3dip  android color   B1BCBE    gt       lt corners android radius  10dip   gt       lt padding android left  3dip  android top  3dip  android right  3dip  android bottom  3dip    gt   lt  shape gt     David  just put padding same value as stroke  so border can be visible  regardeless image size

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The best and simplest method would be to make use of card background drawable in your layout  This also follows Google s material design guidelines  Just include this in you LinearLayout   android background   drawable card background    Add this to your drawable directory and name it card background xml    lt  xml version  1 0  encoding  utf-8   gt   lt layer-list xmlns android  http   schemas android com apk res android  gt        lt item gt           lt shape android shape  rectangle  gt               lt solid android color   BDBDBD   gt               lt corners android radius  5dp   gt           lt  shape gt       lt  item gt        lt item         android left  0dp          android right  0dp          android top  0dp          android bottom  2dp  gt           lt shape android shape  rectangle  gt               lt solid android color   ffffff   gt               lt corners android radius  5dp   gt           lt  shape gt       lt  item gt   lt  layer-list gt

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I have done this way   Check Screenshot     Create drawable file named with custom rectangle xml in drawable folder    lt  xml version  1 0  encoding  utf-8   gt   lt shape xmlns android  http   schemas android com apk res android      android shape  rectangle   gt        lt solid android color   android color white    gt        lt corners android radius  10dip    gt        lt stroke         android width  1dp          android color   android color white    gt    lt  shape gt    Now apply Rectangle background on View   mView setBackground R drawlable custom rectangle     Done

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Step 1  Define bg layout xml in drawables folder  Step 2  Add bg layout xml as background to your layout       lt  xml version  quot 1 0 quot  encoding  quot UTF-8 quot   gt   lt shape xmlns android  quot http   schemas android com apk res android quot  gt       lt solid         android color  quot  EEEEEE quot   gt   lt  --your desired colour for solid-- gt        lt stroke         android width  quot 3dp quot          android color  quot  EEEEEE quot    gt   lt  --your desired colour for border-- gt        lt corners         android radius  quot 50dp quot   gt   lt  --shape rounded value-- gt    lt  shape gt

[android] How to make layout with rounded corners..?

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