CODEWITHSUNDEEP
androidandroid-layoutviewandroid-viewandroid-shape
Zach
Zach

Reputation: 10129

How to make a view with rounded corners?

I am trying to make a view in android with rounded edges. The solution I found so far is to define a shape with rounded corners and use it as the background of that view.

Here is what I did, define a drawable as given below:

<padding
android:top="2dp"
android:bottom="2dp"/>
<corners android:bottomRightRadius="20dp"
android:bottomLeftRadius="20dp"
android:topLeftRadius="20dp"
android:topRightRadius="20dp"/>

Now I used this as the background for my layout as below:

<LinearLayout
        android:orientation="vertical"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="10dp"
        android:layout_marginRight="10dp"
        android:layout_marginBottom="10dp"
        android:clipChildren="true"
        android:background="@drawable/rounded_corner">

This works perfectly fine, I can see that the view has rounded edges.

But my layout has got many other child views in it, say an ImageView or a MapView. When I place an ImageView inside the above layout, the corners of image are not clipped/cropped, instead it appears full.

I have seen other workarounds to make it work like the one explained here.

But is there a method to set rounded corners for a view and all its child views are contained within that main view that has rounded corners?

Upvotes: 132

Views: 189218

Answers (20)

zakaria-alshamere
zakaria-alshamere

Reputation: 43

I have seen many solutions, but most of them are useless with Image View unless you change Image View to other design components, and I do not recommend them because they may not be compatible with some ** solution using:

** Width and color of stroke in drawable And Margin for the picture

versions. Here is the quick solution. The first step:

<RelativeLayout
        android:layout_width="90dp"
        android:layout_height="90dp">
        <ImageView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_margin="5dp"
            android:scaleType="centerCrop"
            android:src="@drawable/a" />

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:background="@drawable/card_helh" />

    </RelativeLayout>

design shape

The second step:

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    <corners android:radius="@dimen/_10dp"/>
    <stroke android:color="@color/white" android:width="5dp"/>
</shape>

**

A note ** about setting the night mode, set the color stroke color to the color of the container's night so that it appears more homogeneous This solution works 100% This solution is mine and I am currently using it

Upvotes: 0

Timur Panzhiev
Timur Panzhiev

Reputation: 760

In case you want to round some specific corner.

fun setCorners() {
        
        val mOutlineProvider = object : ViewOutlineProvider() {
            override fun getOutline(view: View, outline: Outline) {

                val left = 0
                val top = 0;
                val right = view.width
                val bottom = view.height
                val cornerRadiusDP = 16f
                val cornerRadius = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, cornerRadiusDP, resources.displayMetrics).toInt()

                // all corners
                outline.setRoundRect(left, top, right, bottom, cornerRadius.toFloat())

                /* top corners
                outline.setRoundRect(left, top, right, bottom+cornerRadius, cornerRadius.toFloat())*/

                /* bottom corners
                outline.setRoundRect(left, top - cornerRadius, right, bottom, cornerRadius.toFloat())*/

                /* left corners
                outline.setRoundRect(left, top, right + cornerRadius, bottom, cornerRadius.toFloat())*/

                /* right corners
                outline.setRoundRect(left - cornerRadius, top, right, bottom, cornerRadius.toFloat())*/

                /* top left corner
                outline.setRoundRect(left , top, right+ cornerRadius, bottom + cornerRadius, cornerRadius.toFloat())*/

                /* top right corner
                outline.setRoundRect(left - cornerRadius , top, right, bottom + cornerRadius, cornerRadius.toFloat())*/

                /* bottom left corner
                outline.setRoundRect(left, top - cornerRadius, right + cornerRadius, bottom, cornerRadius.toFloat())*/

                /* bottom right corner
                outline.setRoundRect(left - cornerRadius, top - cornerRadius, right, bottom, cornerRadius.toFloat())*/

            }
        }

        myView.apply {
            outlineProvider = mOutlineProvider
            clipToOutline = true
        }
    }

Can be used on a LinearLayout with children that looks like this:

enter image description here

to this:

enter image description here

Upvotes: 29

Erfan Eghterafi
Erfan Eghterafi

Reputation: 5565

To create round corner image using com.google.android.material:material:1.2.0-beta01

 float radius = context.getResources().getDimension(R.dimen.border_radius_hug);
    shapeAppearanceModel = new ShapeAppearanceModel()
            .toBuilder()
            .setAllCorners(CornerFamily.ROUNDED,radius)
            .build();

imageView.setShapeAppearanceModel(shapeAppearanceModel)

or if you want to use it in xml file:

  <com.google.android.material.imageview.ShapeableImageView
            android:id="@+id/thumb"
            android:layout_width="80dp"
            android:layout_height="60dp"
            app:shapeAppearanceOverlay="@style/circleImageView"
            />

in style.xml add this:

<style name="circleImageView" parent="">
      <item name="cornerFamily">rounded</item>
      <item name="cornerSize">10%</item>
</style>

Upvotes: 4

Gabriele Mariotti
Gabriele Mariotti

Reputation: 363737

With the Material Components Library the best way to make a View with rounded corners is to use the MaterialShapeDrawable.

Create a ShapeAppearanceModel with custom rounded corners:

ShapeAppearanceModel shapeAppearanceModelLL1 = new ShapeAppearanceModel()
        .toBuilder()
        .setAllCorners(CornerFamily.ROUNDED,radius16)
        .build();

Create a MaterialShapeDrawable:

MaterialShapeDrawable shapeDrawableLL1 = new MaterialShapeDrawable(shapeAppearanceModeLL1);

If you want to apply also an elevationOverlay for the dark theme use this:

MaterialShapeDrawable shapeDrawableLL1 = MaterialShapeDrawable.createWithElevationOverlay(this, 4.0f);
shapeDrawableLL1.setShapeAppearanceModel(shapeAppearanceModelLL1);

Optional: apply to the shapeDrawable a background color and a stroke

shapeDrawableLL1.setFillColor(
       ContextCompat.getColorStateList(this,R.color...));
 shapeDrawableLL1.setStrokeWidth(2.0f);
 shapeDrawableLL1.setStrokeColor(
       ContextCompat.getColorStateList(this,R.color...));

Finally apply the shapeDrawable as background in your LinearLayout (or other view):

LinearLayout linearLayout1= findViewById(R.id.ll_1);
ViewCompat.setBackground(linearLayout1,shapeDrawableLL1);

enter image description here

Upvotes: 18

Lloyd Rochester
Lloyd Rochester

Reputation: 719

The CardView worked for me in API 27 in Android Studio 3.0.1. The colorPrimary was referenced in the res/values/colors.xml file and is just an example. For the layout_width of 0dp it will stretch to the width of the parent. You'll have to configure the constraints and width/height to your needs.

<android.support.v7.widget.CardView
    android:id="@+id/cardView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    app:cardCornerRadius="4dp"
    app:cardBackgroundColor="@color/colorPrimary">

    <!-- put your content here -->

</android.support.v7.widget.CardView>

Upvotes: 7

Rajneesh Shukla
Rajneesh Shukla

Reputation: 1382

Create a xml file under your drawable folder with following code. (The name of the file I created is rounded_corner.xml)

rounded_corner.xml

    <?xml version="1.0" encoding="utf-8"?>
    <shape
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:shape="rectangle">

        <!-- view background color -->
        <solid
            android:color="#a9c5ac" >
        </solid>

        <!-- view border color and width -->
        <stroke
            android:width="3dp"
            android:color="#1c1b20" >
        </stroke>

        <!-- If you want to add some padding -->
        <padding
            android:left="4dp"
            android:top="4dp"
            android:right="4dp"
            android:bottom="4dp"    >
        </padding>

        <!-- Here is the corner radius -->
        <corners
            android:radius="10dp"   >
        </corners>
    </shape>

And keep this drawable as background for the view to which you want to keep rounded corner border. Let’s keep it for a LinearLayout

    <LinearLayout android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:background="@drawable/rounded_corner"
            android:layout_centerInParent="true">

            <TextView android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:text="Hi, This layout has rounded corner borders ..."
                android:gravity="center"
                android:padding="5dp"/>

    </LinearLayout>

Upvotes: 7

Rahul
Rahul

Reputation: 3349

You can use an androidx.cardview.widget.CardView like so:

<androidx.cardview.widget.CardView
xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"       
        app:cardCornerRadius="@dimen/dimen_4"
        app:cardElevation="@dimen/dimen_4"
        app:contentPadding="@dimen/dimen_10">

       ...

</androidx.cardview.widget.CardView>

OR

shape.xml

<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">

    <solid android:color="#f6eef1" />

    <stroke
        android:width="2dp"
        android:color="#000000" />

    <padding
        android:bottom="5dp"
        android:left="5dp"
        android:right="5dp"
        android:top="5dp" />

    <corners android:radius="5dp" />

</shape>

and inside you layout

<LinearLayout
        android:orientation="vertical"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@drawable/shape">

        ...

</LinearLayout>

Upvotes: 5

Ajay Venugopal
Ajay Venugopal

Reputation: 1700

Create a xml file called round.xml in the drawable folder and paste this content:

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
  <solid android:color="#FFFFFF" />
  <stroke android:width=".05dp" android:color="#d2d2d2" />
  <corners android:topLeftRadius="5dp" android:topRightRadius="5dp" android:bottomRightRadius="5dp" android:bottomLeftRadius="5dp"/>
</shape>

then use the round.xml as background to any item. Then it will give you rounded corners.

Upvotes: 24

Donkey
Donkey

Reputation: 1206

Jaap van Hengstum's answer works great however I think it is expensive and if we apply this method on a Button for example, the touch effect is lost since the view is rendered as a bitmap.

For me the best method and the simplest one consists in applying a mask on the view, like that:

@Override
protected void onSizeChanged(int width, int height, int oldWidth, int oldHeight) {
    super.onSizeChanged(width, height, oldWidth, oldHeight);

    float cornerRadius = <whatever_you_want>;
    this.path = new Path();
    this.path.addRoundRect(new RectF(0, 0, width, height), cornerRadius, cornerRadius, Path.Direction.CW);
}

@Override
protected void dispatchDraw(Canvas canvas) {
    if (this.path != null) {
        canvas.clipPath(this.path);
    }
    super.dispatchDraw(canvas);
}

Upvotes: 29

ivagarz
ivagarz

Reputation: 2444

In Android L you will be able to just use View.setClipToOutline to get that effect. In previous versions there is no way to just clip the contents of a random ViewGroup in a certain shape.

You will have to think of something that would give you a similar effect:

  • If you only need rounded corners in the ImageView, you can use a shader to 'paint' the image over the shape you are using as background. Take a look at this library for an example.

  • If you really need every children to be clipped, maybe you can another view over your layout? One with a background of whatever color you are using, and a round 'hole' in the middle? You could actually create a custom ViewGroup that draws that shape over every children overriding the onDraw method.

Upvotes: 11

Mahmoud
Mahmoud

Reputation: 2883

public class RoundedCornerLayout extends FrameLayout {
    private double mCornerRadius;

    public RoundedCornerLayout(Context context) {
        this(context, null, 0);
    }

    public RoundedCornerLayout(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public RoundedCornerLayout(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        init(context, attrs, defStyle);
    }

    private void init(Context context, AttributeSet attrs, int defStyle) {
        DisplayMetrics metrics = context.getResources().getDisplayMetrics();
        setLayerType(View.LAYER_TYPE_SOFTWARE, null);
    }

    public double getCornerRadius() {
        return mCornerRadius;
    }

    public void setCornerRadius(double cornerRadius) {
        mCornerRadius = cornerRadius;
    }

    @Override
    public void draw(Canvas canvas) {
        int count = canvas.save();

        final Path path = new Path();
        path.addRoundRect(new RectF(0, 0, canvas.getWidth(), canvas.getHeight()), (float) mCornerRadius, (float) mCornerRadius, Path.Direction.CW);
        canvas.clipPath(path, Region.Op.REPLACE);

        canvas.clipPath(path);
        super.draw(canvas);
        canvas.restoreToCount(count);
    }
}

Upvotes: 3

tu4n
tu4n

Reputation: 4450

Or you can use a android.support.v7.widget.CardView like so:

<android.support.v7.widget.CardView
    xmlns:card_view="http://schemas.android.com/apk/res-auto"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    card_view:cardBackgroundColor="@color/white"
    card_view:cardCornerRadius="4dp">

    <!--YOUR CONTENT-->
</android.support.v7.widget.CardView>

Upvotes: 112

Biswajit Karmakar
Biswajit Karmakar

Reputation: 9897

public static Bitmap getRoundedCornerBitmap(Bitmap bitmap, int pixels) {

        Bitmap roundedBitmap = Bitmap.createBitmap(bitmap.getWidth(), bitmap
                .getHeight(), Config.ARGB_8888);
        Canvas canvas = new Canvas(roundedBitmap);

        final int color = 0xff424242;
        final Paint paint = new Paint();
        final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());
        final RectF rectF = new RectF(rect);
        final float roundPx = pixels;

        paint.setAntiAlias(true);
        canvas.drawARGB(0, 0, 0, 0);
        paint.setColor(color);
        canvas.drawRoundRect(rectF, roundPx, roundPx, paint);

        paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
        canvas.drawBitmap(bitmap, rect, rect, paint);

        return roundedBitmap;
    }

Upvotes: 0

Sushant
Sushant

Reputation: 1874

If you are having problem while adding touch listeners to the layout. Use this layout as parent layout.

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.RectF;
import android.graphics.Region;
import android.util.AttributeSet;
import android.util.DisplayMetrics;
import android.util.TypedValue;
import android.view.View;
import android.widget.FrameLayout;

public class RoundedCornerLayout extends FrameLayout {
    private final static float CORNER_RADIUS = 6.0f;
    private float cornerRadius;

    public RoundedCornerLayout(Context context) {
        super(context);
        init(context, null, 0);
    }

    public RoundedCornerLayout(Context context, AttributeSet attrs) {
        super(context, attrs);
        init(context, attrs, 0);
    }

    public RoundedCornerLayout(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        init(context, attrs, defStyle);
    }

    private void init(Context context, AttributeSet attrs, int defStyle) {
        DisplayMetrics metrics = context.getResources().getDisplayMetrics();
        cornerRadius = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, CORNER_RADIUS, metrics);
        setLayerType(View.LAYER_TYPE_SOFTWARE, null);
    }


    @Override
    protected void dispatchDraw(Canvas canvas) {
        int count = canvas.save();

        final Path path = new Path();
        path.addRoundRect(new RectF(0, 0, canvas.getWidth(), canvas.getHeight()), cornerRadius, cornerRadius, Path.Direction.CW);
        canvas.clipPath(path, Region.Op.REPLACE);

        canvas.clipPath(path);
        super.dispatchDraw(canvas);
        canvas.restoreToCount(count);
    }


}

as 

<?xml version="1.0" encoding="utf-8"?>
<com.example.view.RoundedCornerLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <RelativeLayout
        android:id="@+id/patentItem"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:paddingRight="20dp">
        ... your child goes here
    </RelativeLayout>
</com.example.view.RoundedCornerLayout>

Upvotes: 19

Vaishali Sutariya
Vaishali Sutariya

Reputation: 5121

shape.xml

<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">

    <solid android:color="#f6eef1" />

    <stroke
        android:width="2dp"
        android:color="#000000" />

    <padding
        android:bottom="5dp"
        android:left="5dp"
        android:right="5dp"
        android:top="5dp" />

    <corners android:radius="5dp" />

</shape>

and inside you layout

<LinearLayout
        android:orientation="vertical"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="10dp"
        android:layout_marginRight="10dp"
        android:layout_marginBottom="10dp"
        android:clipChildren="true"
        android:background="@drawable/shape">

        <ImageView
             android:layout_width="match_parent"
             android:layout_height="match_parent"
             android:src="@drawable/your image"
             android:background="@drawable/shape">

</LinearLayout>

Upvotes: 71

Peter Zhao
Peter Zhao

Reputation: 7566

Difference from Jaap van Hengstum's answer:

  1. Use BitmapShader instead of mask bitmap.
  2. Create bitmap only once.
public class RoundedFrameLayout extends FrameLayout {
    private Bitmap mOffscreenBitmap;
    private Canvas mOffscreenCanvas;
    private BitmapShader mBitmapShader;
    private Paint mPaint;
    private RectF mRectF;

    public RoundedFrameLayout(Context context) {
        super(context);
        init();
    }

    public RoundedFrameLayout(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
    }

    public RoundedFrameLayout(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init();
    }

    private void init() {
        setWillNotDraw(false);
    }

    @Override
    public void draw(Canvas canvas) {
        if (mOffscreenBitmap == null) {
            mOffscreenBitmap = Bitmap.createBitmap(canvas.getWidth(), canvas.getHeight(), Bitmap.Config.ARGB_8888);
            mOffscreenCanvas = new Canvas(mOffscreenBitmap);
            mBitmapShader = new BitmapShader(mOffscreenBitmap, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
            mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
            mPaint.setShader(mBitmapShader);
            mRectF = new RectF(0f, 0f, canvas.getWidth(), canvas.getHeight());
        }
        super.draw(mOffscreenCanvas);

        canvas.drawRoundRect(mRectF, 8, 8, mPaint);
    }
}

Upvotes: 3

Riley van Hengstum
Riley van Hengstum

Reputation: 4552

Another approach is to make a custom layout class like the one below. This layout first draws its contents to an offscreen bitmap, masks the offscreen bitmap with a rounded rect and then draws the offscreen bitmap on the actual canvas.

I tried it and it seems to work (at least for my simple testcase). It will of course affect performance compared to a regular layout.

package com.example;

import android.content.Context;
import android.graphics.*;
import android.util.AttributeSet;
import android.util.DisplayMetrics;
import android.util.TypedValue;
import android.widget.FrameLayout;

public class RoundedCornerLayout extends FrameLayout {
    private final static float CORNER_RADIUS = 40.0f;

    private Bitmap maskBitmap;
    private Paint paint, maskPaint;
    private float cornerRadius;

    public RoundedCornerLayout(Context context) {
        super(context);
        init(context, null, 0);
    }

    public RoundedCornerLayout(Context context, AttributeSet attrs) {
        super(context, attrs);
        init(context, attrs, 0);
    }

    public RoundedCornerLayout(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        init(context, attrs, defStyle);
    }

    private void init(Context context, AttributeSet attrs, int defStyle) {
        DisplayMetrics metrics = context.getResources().getDisplayMetrics();
        cornerRadius = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, CORNER_RADIUS, metrics);

        paint = new Paint(Paint.ANTI_ALIAS_FLAG);

        maskPaint = new Paint(Paint.ANTI_ALIAS_FLAG | Paint.FILTER_BITMAP_FLAG);
        maskPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));

        setWillNotDraw(false);
    }

    @Override
    public void draw(Canvas canvas) {
        Bitmap offscreenBitmap = Bitmap.createBitmap(canvas.getWidth(), canvas.getHeight(), Bitmap.Config.ARGB_8888);
        Canvas offscreenCanvas = new Canvas(offscreenBitmap);

        super.draw(offscreenCanvas);

        if (maskBitmap == null) {
            maskBitmap = createMask(canvas.getWidth(), canvas.getHeight());
        }

        offscreenCanvas.drawBitmap(maskBitmap, 0f, 0f, maskPaint);
        canvas.drawBitmap(offscreenBitmap, 0f, 0f, paint);
    }

    private Bitmap createMask(int width, int height) {
        Bitmap mask = Bitmap.createBitmap(width, height, Bitmap.Config.ALPHA_8);
        Canvas canvas = new Canvas(mask);

        Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
        paint.setColor(Color.WHITE);

        canvas.drawRect(0, 0, width, height, paint);

        paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));
        canvas.drawRoundRect(new RectF(0, 0, width, height), cornerRadius, cornerRadius, paint);

        return mask;
    }
}

Use this like a normal layout:

<com.example.RoundedCornerLayout
    android:layout_width="200dp"
    android:layout_height="200dp">

    <ImageView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:src="@drawable/test"/>

    <View
        android:layout_width="match_parent"
        android:layout_height="100dp"
        android:background="#ff0000"
        />

</com.example.RoundedCornerLayout>

Upvotes: 144

Tal Kanel
Tal Kanel

Reputation: 10785

follow this tutorial and all the discussion beneath it - http://www.curious-creature.org/2012/12/11/android-recipe-1-image-with-rounded-corners/

according to this post written by Guy Romain, one of the leading developers of the entire Android UI toolkit, it is possible to make a container (and all his child views) with rounded corners, but he explained that it too expensive (from performances of rendering issues).

I'll recommend you to go according to his post, and if you want rounded corners, then implement rounded corners ImageView according to this post. then, you could place it inside a container with any background, and you'll get the affect you wish.

that's what I did also also eventually.

Upvotes: 3

user4050065
user4050065

Reputation:

try this property with your linear layout it will help
tools:context=".youractivity"

Upvotes: 0

danielcooperxyz
danielcooperxyz

Reputation: 999

The tutorial link you provided seems to suggest that you need to set the layout_width and layout_height properties, of your child elements to match_parent.

<ImageView
    android:layout_width="match_parent"
    android:layout_height="match_parent">

Upvotes: 1

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