ImageView循环通过xml-Java 学习之路

141

我想把我的 ImageView 中的任何图像变成带边框的圆形图像 .

我搜索但找不到任何有用的信息（我试过的任何东西都不起作用） .

我怎样才能通过xml实现这一点：用某个src创建一个 ImageView 并使其带边框？

17 回答

-1

您可以制作一个带有白色边框和透明内容的简单圆圈 .

// res/drawable/circle.xml

<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:innerRadius="0dp"
    android:shape="ring"
    android:thicknessRatio="1.9"
    android:useLevel="false" >
    <solid android:color="@android:color/transparent" />

    <stroke
        android:width="10dp"
        android:color="@android:color/white" />
</shape>

然后创建一个可绘制的图层列表，并将其作为背景添加到您的图像视图中 .

// res/drawable/img.xml

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

    <item android:drawable="@drawable/ic_launcher"/>
    <item android:drawable="@drawable/circle"/>

</layer-list>

并将其作为您的imageview的背景 .

<ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="@drawable/img"/>

你会有类似的东西 .

enter image description here

回复于 2024-04-29T08:07:58+08:00

216

这是我设计的最简单的方法 . 试试这个 .

dependencies: compile 'com.android.support:appcompat-v7:23.1.1'
              compile 'com.android.support:design:23.1.1'
              compile 'com.android.support:cardview-v7:23.1.1'

<android.support.v7.widget.CardView
    android:layout_width="80dp"
    android:layout_height="80dp"
    android:elevation="12dp"
    android:id="@+id/view2"
   app:cardCornerRadius="40dp"
    android:layout_centerHorizontal="true"
    android:innerRadius="0dp"
    android:shape="ring"
    android:thicknessRatio="1.9">
    <ImageView
        android:layout_height="80dp"
        android:layout_width="match_parent"
        android:id="@+id/imageView1"
        android:src="@drawable/YOUR_IMAGE"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true">
    </ImageView>
 </android.support.v7.widget.CardView>

如果您正在使用lollipop以上的Android版本

<android.support.v7.widget.CardView
android:layout_width="80dp"
android:layout_height="80dp"
android:elevation="12dp"
android:id="@+id/view2"
app:cardCornerRadius="40dp"
android:layout_centerHorizontal="true">
<ImageView
    android:layout_height="80dp"
    android:layout_width="match_parent"
    android:id="@+id/imageView1"
    android:src="@drawable/YOUR_IMAGE"
    android:scaleType="centerCrop"/>
  </android.support.v7.widget.CardView>

回复于 2024-04-29T08:07:58+08:00

我希望这对你有所帮助 .

1) With Third-party Library

enter image description here

<de.hdodenhof.circleimageview.CircleImageView
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:id="@+id/profile_image"
        android:layout_width="120dp"
        android:layout_height="120dp"
        android:layout_centerInParent="true"
        android:src="@drawable/your_picture"
        app:civ_border_color="@color/colorAccent"
        app:civ_border_width="3dp" />

Note : In your project, open your_app > Gradle Scripts > build.gradle (Module: app) and add the following implementation statement to the dependencies{}

implementation 'de.hdodenhof:circleimageview:2.2.0'

有关完整说明，请查看：The Source here.

2) Without Third-party Library

package com.mypackage.custom;

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Bitmap;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.ColorFilter;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.Shader;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.support.v7.widget.AppCompatImageView;
import android.util.AttributeSet;

import com.mypackage.R;

import static android.widget.ImageView.ScaleType.CENTER_CROP;
import static android.widget.ImageView.ScaleType.CENTER_INSIDE;


public class CircularImageView extends AppCompatImageView {

    // Default Values
    private static final float DEFAULT_BORDER_WIDTH = 4;
    private static final float DEFAULT_SHADOW_RADIUS = 8.0f;

    // Properties
    private float borderWidth;
    private int canvasSize;
    private float shadowRadius;
    private int shadowColor = Color.BLACK;
    private ShadowGravity shadowGravity = ShadowGravity.BOTTOM;
    private ColorFilter colorFilter;

    // Object used to draw
    private Bitmap image;
    private Drawable drawable;
    private Paint paint;
    private Paint paintBorder;
    private Paint paintBackground;

    //region Constructor & Init Method
    public CircularImageView(final Context context) {
        this(context, null);
    }

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

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

    private void init(Context context, AttributeSet attrs, int defStyleAttr) {
        // Init paint
        paint = new Paint();
        paint.setAntiAlias(true);

        paintBorder = new Paint();
        paintBorder.setAntiAlias(true);

        paintBackground = new Paint();
        paintBackground.setAntiAlias(true);

        // Load the styled attributes and set their properties
        TypedArray attributes = context.obtainStyledAttributes(attrs, R.styleable.CircularImageView, defStyleAttr, 0);

        // Init Border
        if (attributes.getBoolean(R.styleable.CircularImageView_civ_border, true)) {
            float defaultBorderSize = DEFAULT_BORDER_WIDTH * getContext().getResources().getDisplayMetrics().density;
            setBorderWidth(attributes.getDimension(R.styleable.CircularImageView_civ_border_width, defaultBorderSize));
            setBorderColor(attributes.getColor(R.styleable.CircularImageView_civ_border_color, Color.WHITE));
        }

        setBackgroundColor(attributes.getColor(R.styleable.CircularImageView_civ_background_color, Color.WHITE));

        // Init Shadow
        if (attributes.getBoolean(R.styleable.CircularImageView_civ_shadow, false)) {
            shadowRadius = DEFAULT_SHADOW_RADIUS;
            drawShadow(attributes.getFloat(R.styleable.CircularImageView_civ_shadow_radius, shadowRadius),
                    attributes.getColor(R.styleable.CircularImageView_civ_shadow_color, shadowColor));
            int shadowGravityIntValue = attributes.getInteger(R.styleable.CircularImageView_civ_shadow_gravity, ShadowGravity.BOTTOM.getValue());
            shadowGravity = ShadowGravity.fromValue(shadowGravityIntValue);
        }

        attributes.recycle();
    }
    //endregion

    //region Set Attr Method
    public void setBorderWidth(float borderWidth) {
        this.borderWidth = borderWidth;
        requestLayout();
        invalidate();
    }

    public void setBorderColor(int borderColor) {
        if (paintBorder != null)
            paintBorder.setColor(borderColor);
        invalidate();
    }

    public void setBackgroundColor(int backgroundColor) {
        if (paintBackground != null)
            paintBackground.setColor(backgroundColor);
        invalidate();
    }

    public void addShadow() {
        if (shadowRadius == 0)
            shadowRadius = DEFAULT_SHADOW_RADIUS;
        drawShadow(shadowRadius, shadowColor);
        invalidate();
    }

    public void setShadowRadius(float shadowRadius) {
        drawShadow(shadowRadius, shadowColor);
        invalidate();
    }

    public void setShadowColor(int shadowColor) {
        drawShadow(shadowRadius, shadowColor);
        invalidate();
    }

    public void setShadowGravity(ShadowGravity shadowGravity) {
        this.shadowGravity = shadowGravity;
        invalidate();
    }

    @Override
    public void setColorFilter(ColorFilter colorFilter) {
        if (this.colorFilter == colorFilter)
            return;
        this.colorFilter = colorFilter;
        drawable = null; // To force re-update shader
        invalidate();
    }

    @Override
    public ScaleType getScaleType() {
        ScaleType currentScaleType = super.getScaleType();
        return currentScaleType == null || currentScaleType != CENTER_INSIDE ? CENTER_CROP : currentScaleType;
    }

    @Override
    public void setScaleType(ScaleType scaleType) {
        if (scaleType != CENTER_CROP && scaleType != CENTER_INSIDE) {
            throw new IllegalArgumentException(String.format("ScaleType %s not supported. " +
                    "Just ScaleType.CENTER_CROP & ScaleType.CENTER_INSIDE are available for this library.", scaleType));
        } else {
            super.setScaleType(scaleType);
        }
    }
    //endregion

    //region Draw Method
    @Override
    public void onDraw(Canvas canvas) {
        // Load the bitmap
        loadBitmap();

        // Check if image isn't null
        if (image == null)
            return;

        if (!isInEditMode()) {
            canvasSize = Math.min(canvas.getWidth(), canvas.getHeight());
        }

        // circleCenter is the x or y of the view's center
        // radius is the radius in pixels of the cirle to be drawn
        // paint contains the shader that will texture the shape
        int circleCenter = (int) (canvasSize - (borderWidth * 2)) / 2;
        float margeWithShadowRadius = shadowRadius * 2;

        // Draw Border
        canvas.drawCircle(circleCenter + borderWidth, circleCenter + borderWidth, circleCenter + borderWidth - margeWithShadowRadius, paintBorder);
        // Draw Circle background
        canvas.drawCircle(circleCenter + borderWidth, circleCenter + borderWidth, circleCenter - margeWithShadowRadius, paintBackground);
        // Draw CircularImageView
        canvas.drawCircle(circleCenter + borderWidth, circleCenter + borderWidth, circleCenter - margeWithShadowRadius, paint);
    }

    private void loadBitmap() {
        if (drawable == getDrawable())
            return;

        drawable = getDrawable();
        image = drawableToBitmap(drawable);
        updateShader();
    }

    @Override
    protected void onSizeChanged(int w, int h, int oldw, int oldh) {
        super.onSizeChanged(w, h, oldw, oldh);
        canvasSize = Math.min(w, h);
        if (image != null)
            updateShader();
    }

    private void drawShadow(float shadowRadius, int shadowColor) {
        this.shadowRadius = shadowRadius;
        this.shadowColor = shadowColor;
        setLayerType(LAYER_TYPE_SOFTWARE, paintBorder);

        float dx = 0.0f;
        float dy = 0.0f;

        switch (shadowGravity) {
            case CENTER:
                dx = 0.0f;
                dy = 0.0f;
                break;
            case TOP:
                dx = 0.0f;
                dy = -shadowRadius / 2;
                break;
            case BOTTOM:
                dx = 0.0f;
                dy = shadowRadius / 2;
                break;
            case START:
                dx = -shadowRadius / 2;
                dy = 0.0f;
                break;
            case END:
                dx = shadowRadius / 2;
                dy = 0.0f;
                break;
        }

        paintBorder.setShadowLayer(shadowRadius, dx, dy, shadowColor);
    }

    private void updateShader() {
        if (image == null)
            return;

        // Create Shader
        BitmapShader shader = new BitmapShader(image, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);

        // Center Image in Shader
        float scale = 0;
        float dx = 0;
        float dy = 0;

        switch (getScaleType()) {
            case CENTER_CROP:
                if (image.getWidth() * getHeight() > getWidth() * image.getHeight()) {
                    scale = getHeight() / (float) image.getHeight();
                    dx = (getWidth() - image.getWidth() * scale) * 0.5f;
                } else {
                    scale = getWidth() / (float) image.getWidth();
                    dy = (getHeight() - image.getHeight() * scale) * 0.5f;
                }
                break;
            case CENTER_INSIDE:
                if (image.getWidth() * getHeight() < getWidth() * image.getHeight()) {
                    scale = getHeight() / (float) image.getHeight();
                    dx = (getWidth() - image.getWidth() * scale) * 0.5f;
                } else {
                    scale = getWidth() / (float) image.getWidth();
                    dy = (getHeight() - image.getHeight() * scale) * 0.5f;
                }
                break;
        }

        Matrix matrix = new Matrix();
        matrix.setScale(scale, scale);
        matrix.postTranslate(dx, dy);
        shader.setLocalMatrix(matrix);

        // Set Shader in Paint
        paint.setShader(shader);

        // Apply colorFilter
        paint.setColorFilter(colorFilter);
    }

    private Bitmap drawableToBitmap(Drawable drawable) {
        if (drawable == null) {
            return null;
        } else if (drawable instanceof BitmapDrawable) {
            return ((BitmapDrawable) drawable).getBitmap();
        }

        try {
            // Create Bitmap object out of the drawable
            Bitmap bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);
            Canvas canvas = new Canvas(bitmap);
            drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
            drawable.draw(canvas);
            return bitmap;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
    //endregion

    //region Measure Method
    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        int width = measureWidth(widthMeasureSpec);
        int height = measureHeight(heightMeasureSpec);
        setMeasuredDimension(width, height);
    }

    private int measureWidth(int measureSpec) {
        int result;
        int specMode = MeasureSpec.getMode(measureSpec);
        int specSize = MeasureSpec.getSize(measureSpec);

        if (specMode == MeasureSpec.EXACTLY) {
            // The parent has determined an exact size for the child.
            result = specSize;
        } else if (specMode == MeasureSpec.AT_MOST) {
            // The child can be as large as it wants up to the specified size.
            result = specSize;
        } else {
            // The parent has not imposed any constraint on the child.
            result = canvasSize;
        }

        return result;
    }

    private int measureHeight(int measureSpecHeight) {
        int result;
        int specMode = MeasureSpec.getMode(measureSpecHeight);
        int specSize = MeasureSpec.getSize(measureSpecHeight);

        if (specMode == MeasureSpec.EXACTLY) {
            // We were told how big to be
            result = specSize;
        } else if (specMode == MeasureSpec.AT_MOST) {
            // The child can be as large as it wants up to the specified size.
            result = specSize;
        } else {
            // Measure the text (beware: ascent is a negative number)
            result = canvasSize;
        }

        return result + 2;
    }
    //endregion

    public enum ShadowGravity {
        CENTER,
        TOP,
        BOTTOM,
        START,
        END;

        public int getValue() {
            switch (this) {
                case CENTER:
                    return 1;
                case TOP:
                    return 2;
                case BOTTOM:
                    return 3;
                case START:
                    return 4;
                case END:
                    return 5;
            }
            throw new IllegalArgumentException("Not value available for this ShadowGravity: " + this);
        }

        public static ShadowGravity fromValue(int value) {
            switch (value) {
                case 1:
                    return CENTER;
                case 2:
                    return TOP;
                case 3:
                    return BOTTOM;
                case 4:
                    return START;
                case 5:
                    return END;
            }
            throw new IllegalArgumentException("This value is not supported for ShadowGravity: " + value);
        }

    }
}

res/values/attrs.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <declare-styleable name="CircularImageView">
        <attr name="civ_border" format="boolean" />
        <attr name="civ_border_width" format="dimension" />
        <attr name="civ_border_color" format="color" />
        <attr name="civ_background_color" format="color" />
        <attr name="civ_shadow" format="boolean" />
        <attr name="civ_shadow_color" format="color" />
        <attr name="civ_shadow_radius" format="float" />
        <attr name="civ_shadow_gravity">
            <flag name="center" value="1" />
            <flag name="top" value="2" />
            <flag name="bottom" value="3" />
            <flag name="start" value="4" />
            <flag name="end" value="5" />
        </attr>
    </declare-styleable>
</resources>

Layout

<com.mypackage.CircularImageView
        android:id="@+id/iv_profile"
        android:layout_width="120dp"
        android:layout_height="120dp"
        android:layout_centerInParent="true"
        android:src="@drawable/your_picture"
        app:civ_border="true"
        app:civ_border_color="@color/colorAccent"
        app:civ_border_width="3dp"/>

回复于 2024-04-29T08:07:58+08:00

-1

以上方法使用 src 属性 . 我做的是将两个图像视图放在一个框架布局内，一个在另一个上面，如下所示：

<FrameLayout android:id="@+id/frame"
             android:layout_width="40dp"
             android:layout_height="40dp">

    <ImageView android:id="@+id/pic"
               android:layout_width="40dp"
               android:layout_height="40dp"
               android:src="@drawable/my_picture" />

    <ImageView android:id="@+id/circle_crop"
               android:layout_width="40dp"
               android:layout_height="40dp"
               android:src="@drawable/circle_crop" />

</FrameLayout>

只需将circular_crop.png放在您的可绘制文件夹中，该文件夹的形状为图像尺寸（在我的情况下为正方形），中间有白色背景和透明圆圈 . 如果您需要方形图像视图，可以使用此图像 .

只需下载上面的图片 .

回复于 2024-04-29T08:07:58+08:00

以下是最简单的方法之一，使用以下代码：

Dependencies

dependencies {
    ...
    compile 'de.hdodenhof:circleimageview:2.1.0'      // use this or use the latest compile version. In case u get bug.
}

XML Code

<de.hdodenhof.circleimageview.CircleImageView
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/profile_image"
    android:layout_width="96dp"             //  here u can adjust the width 
    android:layout_height="96dp"            //  here u can adjust the height 
    android:src="@drawable/profile"         //  here u can change the image 
    app:civ_border_width="2dp"              //  here u can adjust the border of the circle.  
    app:civ_border_color="#FF000000"/>      //  here u can adjust the border color

Screenshot:

Screenshot

资料来源：Circular ImageView GitHub Repository

enter image description here

回复于 2024-04-29T08:07:58+08:00

在glide库和RoundedBitmapDrawableFactory类的帮助下，它很容易实现 . 您可能需要创建圆形占位符图像 .

滑翔V4：

Glide.with(context).load(url).apply(RequestOptions.circleCropTransform()).into(imageView);

Glide V3：

Glide.with(context)
        .load(imgUrl)
        .asBitmap()
        .placeholder(R.drawable.placeholder)
        .error(R.drawable.placeholder)
        .into(new BitmapImageViewTarget(imgProfilePicture) {
            @Override
            protected void setResource(Bitmap resource) {
                RoundedBitmapDrawable drawable = RoundedBitmapDrawableFactory.create(context.getResources(),
                        Bitmap.createScaledBitmap(resource, 50, 50, false));
                drawable.setCircular(true);
                imgProfilePicture.setImageDrawable(drawable);
            }
        });

回复于 2024-04-29T08:07:58+08:00

这样就可以了：

rectangle.xml

<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    <solid android:color="@android:color/transparent" />
    <padding android:bottom="-14dp" android:left="-14dp" android:right="-14dp" android:top="-14dp" />

</shape>

circle.xml

<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:innerRadius="0dp"
    android:shape="oval"

    android:useLevel="false" >
    <solid android:color="@android:color/transparent" />

    <stroke
        android:width="15dp"
        android:color="@color/verification_contact_background" />

</shape>

profile_image.xml（图层列表）

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

    <item android:drawable="@drawable/rectangle" />
    <item android:drawable="@drawable/circle"/>

</layer-list>

你的布局

<ImageView
        android:id="@+id/profile_image"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@drawable/default_org"
        android:src="@drawable/profile_image"/>

回复于 2024-04-29T08:07:58+08:00

1

我使用shape = "oval"而不是下面的"ring" . 它对我有用 . 为了使图像保持在边界内，我使用 <padding> 并在 <ImageView> 中将 <adjustViewBounds> 设置为true . 我尝试过尺寸在50 x 50像素到200x200像素之间的图像 .

回复于 2024-04-29T08:07:58+08:00

只需使用这些代码行即可完成：

<de.hdodenhof.circleimageview.CircleImageView
            xmlns:app="http://schemas.android.com/apk/res-auto"
            android:clickable="true"
            app:civ_border_width="3dp"
            app:civ_border_color="#FFFFFFFF"
            android:id="@+id/profile"
            android:layout_width="200dp"
            android:layout_height="200dp"
            android:layout_below="@+id/header_cover_image"
            android:layout_centerHorizontal="true"
            android:layout_marginTop="-130dp"
            android:elevation="5dp"
            android:padding="20dp"
            android:scaleType="centerCrop"
            android:src="@drawable/profilemain" />

enter image description here

别忘了导入：

import de.hdodenhof.circleimageview.CircleImageView;

在build.gradle中添加此库：

compile 'de.hdodenhof:circleimageview:2.1.0'

回复于 2024-04-29T08:07:58+08:00

-1

创建一个CustomImageview，它的 onDraw() 方法如下：

@Override
protected void onDraw(Canvas canvas) {

    float radius = this.getHeight()/2;
    Path path = new Path();
    RectF rect = new RectF(0, 0, this.getWidth(), this.getHeight());
    path.addRoundRect(rect, radius, radius, Path.Direction.CW);
    canvas.clipPath(path);
    super.onDraw(canvas);

}

回复于 2024-04-29T08:07:58+08:00

此类是具有阴影，笔触，饱和度的自定义圆形图像视图，使用此自定义圆形ImageView，您可以使用“半径”将图像设置为圆形 . 圆形阴影ImageView的人不需要Github这个类就足够了 .

将CircularImageView添加到您的布局

CircularImageView c=new CircularImageView(this,screen width,screen height,Bitmap myimage);
yourLayout.addView(c);**


public class CircularImageView extends android.support.v7.widget.AppCompatImageView  
{
    private final Context context;
    private final int width, height;
    private final Paint paint;
    private final Paint paintBorder,imagePaint;
    private final Bitmap bitmap2;
    private final Paint paint3;
    private Bitmap bitmap;
    private BitmapShader shader;
    private float radius = 4.0f;
    float x = 0.0f;
    float y = 8.0f;
    private float stroke;
    private float strokeWidth = 0.0f;
    private Bitmap bitmap3;
    private int corner_radius=50;


    public CircularImageView(Context context, int width, int height, Bitmap bitmap)     {
        super(context);
        this.context = context;
        this.width = width;
        this.height = height;

   //here "bitmap" is the square shape(width* width) scaled bitmap ..

        this.bitmap = bitmap;


        paint = new Paint(Paint.ANTI_ALIAS_FLAG);
        paint.setAntiAlias(true);
        paint.setFilterBitmap(true);
        paint.setDither(true);


        paint3=new Paint();
        paint3.setStyle(Paint.Style.STROKE);
        paint3.setColor(Color.WHITE);
        paint3.setAntiAlias(true);

        paintBorder = new Paint();
        imagePaint= new Paint();

        paintBorder.setColor(Color.WHITE);
        paintBorder.setAntiAlias(true);
        this.setLayerType(LAYER_TYPE_SOFTWARE, paintBorder);


        this.bitmap2 = Bitmap.createScaledBitmap(bitmap, (bitmap.getWidth() - 40), (bitmap.getHeight() - 40), true);


        imagePaint.setAntiAlias(true);




        invalidate();
    }

    @Override
    protected void onDraw(Canvas canvas) 
    {
        super.onDraw(canvas);
        Shader b;
         if (bitmap3 != null)
            b = new BitmapShader(bitmap3, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
         else
            b = new BitmapShader(bitmap2, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
        imagePaint.setShader(b);
        canvas.drawBitmap(maskedBitmap(), 20, 20, null);
    }

    private Bitmap maskedBitmap()
    {
        Bitmap l1 = Bitmap.createBitmap(width,width, Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(l1);
        paintBorder.setShadowLayer(radius, x, y, Color.parseColor("#454645"));
        paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
        final RectF rect = new RectF();
        rect.set(20, 20, bitmap2.getWidth(), bitmap2.getHeight());

        canvas.drawRoundRect(rect, corner_radius, corner_radius, paintBorder);

        canvas.drawRoundRect(rect, corner_radius, corner_radius, imagePaint);

        if (strokeWidth!=0.0f)
        {
            paint3.setStrokeWidth(strokeWidth);
            canvas.drawRoundRect(rect, corner_radius, corner_radius, paint3);
        }

         paint.setXfermode(null);
        return l1;
    }




     // use seekbar here, here you have to pass  "0 -- 250"  here corner radius will change 

    public void setCornerRadius(int corner_radius)
    {
        this.corner_radius = corner_radius;
        invalidate();
    }



    -------->use seekbar here, here you have to pass  "0 -- 10.0f"  here shadow radius will change 

    public void setShadow(float radius)
    {
        this.radius = radius;
        invalidate();
    }

   // use seekbar here, here you have to pass  "0 -- 10.0f"  here stroke size  will change 

    public void setStroke(float stroke)
    {
        this.strokeWidth = stroke;
        invalidate();
    }

    private Bitmap updateSat(Bitmap src, float settingSat)
    {

        int w = src.getWidth();
        int h = src.getHeight();

        Bitmap bitmapResult =
                Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);
        Canvas canvasResult = new Canvas(bitmapResult);
        Paint paint = new Paint();
        ColorMatrix colorMatrix = new ColorMatrix();
        colorMatrix.setSaturation(settingSat);
        ColorMatrixColorFilter filter = new ColorMatrixColorFilter(colorMatrix);
        paint.setColorFilter(filter);
        canvasResult.drawBitmap(src, 0, 0, paint);

        return bitmapResult;
    }




  // use seekbar here, here you have to pass  "0 -- 2.0f"  here saturation  will change 

    public void setSaturation(float sat)
    {
        System.out.println("qqqqqqqqqq            "+sat);
        bitmap3=updateSat(bitmap2, sat);

        invalidate();
    } 


}






        // Seekbar to change radius

                  radius_seekbar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
                        @Override
                        public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser)
                        {
                            text_radius.setText(""+progress);
                            circularImageView.setCornerRadius(progress);
                        }

                        @Override
                        public void onStartTrackingTouch(SeekBar seekBar) {

                        }

                        @Override
                        public void onStopTrackingTouch(SeekBar seekBar) {

                        }
                    });


     // Seekbar to change shadow

                    shadow_seekbar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
                        @Override
                        public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser)
                        {
                            float f= 4+progress/10.0f;
                            text_shadow.setText(""+progress);
                            circularImageView.setShadow(f);
                        }

                        @Override
                        public void onStartTrackingTouch(SeekBar seekBar) {

                        }

                        @Override
                        public void onStopTrackingTouch(SeekBar seekBar) {

                        }
                    });


           // Seekbar to change saturation

                    saturation_seekbar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
                        @Override
                        public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser)
                        {
                            int progressSat = saturation_seekbar.getProgress();
                            float sat = (float) ((progressSat*4 / 100.0f)-1.0f);
                            circularImageView.setSaturation(sat);

                            text_saturation.setText(""+progressSat);
                        }

                        @Override
                        public void onStartTrackingTouch(SeekBar seekBar) {

                        }

                        @Override
                        public void onStopTrackingTouch(SeekBar seekBar) {

                        }
                    });


    // Seekbar to change stroke

                    stroke_seekbar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
                        @Override
                        public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser)
                        {
                            if (progress==0)
                            {
                                float f=(progress*10.0f/100.0f);
                                circularImageView.setStroke(f);
                            }
                            else
                            {
                                float f=(progress*10.0f/100.0f);
                                circularImageView.setStroke(f);
                            }

                            text_stroke.setText(""+progress);
                        }

                        @Override
                        public void onStartTrackingTouch(SeekBar seekBar) {

                        }

                        @Override
                        public void onStopTrackingTouch(SeekBar seekBar) {

                        }
                    });




             //radius seekbar in xml file

             <SeekBar
                android:layout_width="match_parent"
                android:layout_gravity="center" 
                android:progress="50"
                android:max="250"
                android:id="@+id/radius_seekbar"
                android:layout_height="wrap_content" />





          //saturation seekbar in xml file

             <SeekBar
                android:layout_width="match_parent"
                android:layout_gravity="center" 
                android:progress="50"
                android:max="100"
                android:id="@+id/saturation_seekbar"
                android:layout_height="wrap_content" />





    //shadow seekbar in xml file

             <SeekBar
                android:layout_width="match_parent"
                android:layout_gravity="center" 
                android:progress="0"
                android:max="100"
                android:id="@+id/shadow_seekbar"
                android:layout_height="wrap_content" />




         //stroke seekbar in xml file

             <SeekBar
                android:layout_width="match_parent"
                android:layout_gravity="center" 
                android:progress="0"
                android:max="100"
                android:id="@+id/stroke _seekbar"
                android:layout_height="wrap_content" />

回复于 2024-04-29T08:07:58+08:00

183

@Jyotman Singh，答案非常好（对于纯色背景），所以我想通过共享矢量drawable来增强它，可以根据您的需要重新着色，也很方便，因为矢量单件形状可以很好地扩展 .

这是矩形圆形（@ drawable / shape_round_profile_pic）：

<?xml version="1.0" encoding="utf-8"?>
<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:viewportWidth="284"
    android:viewportHeight="284"
    android:width="284dp"
    android:height="284dp">
    <path
        android:pathData="M0 142L0 0l142 0 142 0 0 142 0 142 -142 0 -142 0zm165 137.34231c26.06742 -4.1212 52.67405 -17.543 72.66855 -36.65787 11.82805 -11.30768 20.55487 -22.85153 27.7633 -36.72531C290.23789 158.21592 285.62874 101.14121 253.48951 58.078079 217.58149 9.9651706 154.68849 -10.125717 98.348685 8.5190299 48.695824 24.95084 12.527764 67.047123 3.437787 118.98655 1.4806194 130.16966 1.511302 152.96723 3.4990422 164.5 12.168375 214.79902 47.646316 256.70775 96 273.76783c21.72002 7.66322 44.26673 9.48476 69 5.57448z"
        android:fillColor="#ffffff" /> // you can change frame color
</vector>

用法是一样的：

<FrameLayout
        android:layout_width="70dp"
        android:layout_height="70dp">

        <ImageView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:background="@drawable/YOUR_PICTURE" />

        <ImageView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:background="@drawable/shape_round_profile_pic"/>

    </FrameLayout>

回复于 2024-04-29T08:07:58+08:00

实际上，您可以使用Google通过支持库RoundedBitmapDrawableFactory类（here和here）提供的内容，而不是使用第三方库：

摇篮：

implementation 'androidx.appcompat:appcompat:1.0.0-beta01'

MainActivity.kt

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        val originalDrawable = ContextCompat.getDrawable(this, R.drawable.avatar_1)!!
        val bitmap = convertDrawableToBitmap(originalDrawable)
        val drawable = RoundedBitmapDrawableFactory.create(resources, bitmap)
        drawable.setAntiAlias(true)
        drawable.cornerRadius = Math.max(bitmap.width, bitmap.height) / 2.0f
        avatarImageView.setImageDrawable(drawable)
    }

    companion object {
        @JvmStatic
        fun convertDrawableToBitmap(drawable: Drawable): Bitmap {
            if (drawable is BitmapDrawable)
                return drawable.bitmap
            // We ask for the bounds if they have been set as they would be most
            // correct, then we check we are  > 0
            val bounds = drawable.bounds
            val width = if (!bounds.isEmpty) bounds.width() else drawable.intrinsicWidth
            val height = if (!bounds.isEmpty) bounds.height() else drawable.intrinsicHeight
            // Now we check we are > 0
            val bitmap = Bitmap.createBitmap(if (width <= 0) 1 else width, if (height <= 0) 1 else height,
                    Bitmap.Config.ARGB_8888)
            val canvas = Canvas(bitmap)
            drawable.setBounds(0, 0, canvas.width, canvas.height)
            drawable.draw(canvas)
            return bitmap
        }
    }
}

res/layout/activity_main.xml

<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" tools:context=".MainActivity">

    <androidx.appcompat.widget.AppCompatImageView
        android:id="@+id/avatarImageView" android:layout_width="100dp" android:layout_height="100dp"
        android:layout_gravity="center"/>

</FrameLayout>

res/drawable/avatar_1.xml

<vector xmlns:android="http://schemas.android.com/apk/res/android" android:width="128dp" android:height="128dp"
        android:viewportHeight="128.0" android:viewportWidth="128.0">
    <path
        android:fillColor="#FF8A80" android:pathData="M0 0h128v128h-128z"/>
    <path
        android:fillColor="#FFE0B2"
        android:pathData="M36.3 94.8c6.4 7.3 16.2 12.1 27.3 12.4 10.7,-.3 20.3,-4.7 26.7,-11.6l.2.1c-17,-13.3,-12.9,-23.4,-8.5,-28.6 1.3,-1.2 2.8,-2.5 4.4,-3.9l13.1,-11c1.5,-1.2 2.6,-3 2.9,-5.1.6,-4.4,-2.5,-8.4,-6.9,-9.1,-1.5,-.2,-3 0,-4.3.6,-.3,-1.3,-.4,-2.7,-1.6,-3.5,-1.4,-.9,-2.8,-1.7,-4.2,-2.5,-7.1,-3.9,-14.9,-6.6,-23,-7.9,-5.4,-.9,-11,-1.2,-16.1.7,-3.3 1.2,-6.1 3.2,-8.7 5.6,-1.3 1.2,-2.5 2.4,-3.7 3.7l-1.8 1.9c-.3.3,-.5.6,-.8.8,-.1.1,-.2 0,-.4.2.1.2.1.5.1.6,-1,-.3,-2.1,-.4,-3.2,-.2,-4.4.6,-7.5 4.7,-6.9 9.1.3 2.1 1.3 3.8 2.8 5.1l11 9.3c1.8 1.5 3.3 3.8 4.6 5.7 1.5 2.3 2.8 4.9 3.5 7.6 1.7 6.8,-.8 13.4,-5.4 18.4,-.5.6,-1.1 1,-1.4 1.7,-.2.6,-.4 1.3,-.6 2,-.4 1.5,-.5 3.1,-.3 4.6.4 3.1 1.8 6.1 4.1 8.2 3.3 3 8 4 12.4 4.5 5.2.6 10.5.7 15.7.2 4.5,-.4 9.1,-1.2 13,-3.4 5.6,-3.1 9.6,-8.9 10.5,-15.2m-14.4,-49.8c.9 0 1.6.7 1.6 1.6 0 .9,-.7 1.6,-1.6 1.6,-.9 0,-1.6,-.7,-1.6,-1.6,-.1,-.9.7,-1.6 1.6,-1.6zm-25.7 0c.9 0 1.6.7 1.6 1.6 0 .9,-.7 1.6,-1.6 1.6,-.9 0,-1.6,-.7,-1.6,-1.6,-.1,-.9.7,-1.6 1.6,-1.6z"/>
    <path
        android:fillColor="#E0F7FA"
        android:pathData="M105.3 106.1c-.9,-1.3,-1.3,-1.9,-1.3,-1.9l-.2,-.3c-.6,-.9,-1.2,-1.7,-1.9,-2.4,-3.2,-3.5,-7.3,-5.4,-11.4,-5.7 0 0 .1 0 .1.1l-.2,-.1c-6.4 6.9,-16 11.3,-26.7 11.6,-11.2,-.3,-21.1,-5.1,-27.5,-12.6,-.1.2,-.2.4,-.2.5,-3.1.9,-6 2.7,-8.4 5.4l-.2.2s-.5.6,-1.5 1.7c-.9 1.1,-2.2 2.6,-3.7 4.5,-3.1 3.9,-7.2 9.5,-11.7 16.6,-.9 1.4,-1.7 2.8,-2.6 4.3h109.6c-3.4,-7.1,-6.5,-12.8,-8.9,-16.9,-1.5,-2.2,-2.6,-3.8,-3.3,-5z"/>
    <path
        android:fillColor="#444" android:pathData="M76.3,47.5 m-2.0, 0 a 2.0,2.0 0 1,1 4.0,0 a2.0,2.0 0 1,1 -4.0,0"/>
    <path
        android:fillColor="#444" android:pathData="M50.7,47.6 m-2.0, 0 a 2.0,2.0 0 1,1 4.0,0 a2.0,2.0 0 1,1 -4.0,0"/>
    <path
        android:fillColor="#444"
        android:pathData="M48.1 27.4c4.5 5.9 15.5 12.1 42.4 8.4,-2.2,-6.9,-6.8,-12.6,-12.6,-16.4 17.2 1.5 14.1,-9.4 14.1,-9.4,-1.4 5.5,-11.1 4.4,-11.1 4.4h-18.8c-1.7,-.1,-3.4 0,-5.2.3,-12.8 1.8,-22.6 11.1,-25.7 22.9 10.6,-1.9 15.3,-7.6 16.9,-10.2z"/>
</vector>

结果：

enter image description here

并且，假设您想在其上添加边框，您可以使用此示例：

stroke_drawable.xml

<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="oval">
    <stroke
        android:width="4dp" android:color="@android:color/black"/>
</shape>

并将 android:foreground="@drawable/stroke_drawable" 添加到布局XML文件中的ImageView，你得到这个：

enter image description here

我不知道如何添加阴影（这将适用于较旧的Android版本） . 使用FloatingActionButton（来自"com.google.android.material:material" dependency），我无法使位图填充FAB本身 . 如果有效的话，使用它可能会更好 .

编辑：如果你想添加高程阴影（可从API 21获得），你可以改变我写的内容：

Inside the layout XML file:

<androidx.appcompat.widget.AppCompatImageView android:padding="4dp"
    android:id="@+id/avatarImageView" android:layout_width="100dp" android:layout_height="100dp" android:elevation="8dp"
    android:layout_gravity="center" android:background="@drawable/stroke_drawable" tools:srcCompat="@drawable/avatar_1"/>

CircularShadowViewOutlineProvider.kt

@TargetApi(Build.VERSION_CODES.LOLLIPOP)
class CircularShadowViewOutlineProvider : ViewOutlineProvider() {
    override fun getOutline(view: View, outline: Outline) {
        val size = Math.max(view.width, view.height)
        outline.setRoundRect(0, 0, size, size, size / 2f)
    }
}

In code:

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP)
        avatarImageView.outlineProvider = CircularShadowViewOutlineProvider()

结果：

enter image description here

回复于 2024-04-29T08:07:58+08:00

只需使用这个简单的代码：首先添加依赖：

implementation 'de.hdodenhof:circleimageview:2.2.0'

然后在xml布局中添加以下代码： -

<de.hdodenhof.circleimageview.CircleImageView xmlns:app="http://schemas.android.com/apk/res-auto"
                                        android:id="@+id/Imgshaligram"
                                        android:layout_width="96dp"
                                        android:layout_height="96dp"
                                        android:src="@drawable/shaligram"
                                        app:civ_border_color="#d1b1b1"

                                        android:foregroundGravity="center"/>

回复于 2024-04-29T08:07:58+08:00

使用下面的代码，你可以修改它：

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.PorterDuff.Mode;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.widget.ImageView;

public class RoundedImageView extends ImageView {

    public RoundedImageView(Context context) {
        super(context);
    }

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

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

    @Override
    protected void onDraw(Canvas canvas) {

        Drawable drawable = getDrawable();

        if (drawable == null) {
            return;
        }

        if (getWidth() == 0 || getHeight() == 0) {
            return;
        }
        Bitmap b = ((BitmapDrawable) drawable).getBitmap();
        Bitmap bitmap = b.copy(Bitmap.Config.ARGB_8888, true);

        int w = getWidth();
        @SuppressWarnings("unused")
        int h = getHeight();

        Bitmap roundBitmap = getCroppedBitmap(bitmap, w);
        canvas.drawBitmap(roundBitmap, 0, 0, null);

    }

    public static Bitmap getCroppedBitmap(Bitmap bmp, int radius) {
        Bitmap sbmp;

        if (bmp.getWidth() != radius || bmp.getHeight() != radius) {
            float smallest = Math.min(bmp.getWidth(), bmp.getHeight());
            float factor = smallest / radius;
            sbmp = Bitmap.createScaledBitmap(bmp,
                    (int) (bmp.getWidth() / factor),
                    (int) (bmp.getHeight() / factor), false);
        } else {
            sbmp = bmp;
        }

        Bitmap output = Bitmap.createBitmap(radius, radius, Config.ARGB_8888);
        Canvas canvas = new Canvas(output);

        final String color = "#BAB399";
        final Paint paint = new Paint();
        final Rect rect = new Rect(0, 0, radius, radius);

        paint.setAntiAlias(true);
        paint.setFilterBitmap(true);
        paint.setDither(true);
        canvas.drawARGB(0, 0, 0, 0);
        paint.setColor(Color.parseColor(color));
        canvas.drawCircle(radius / 2 + 0.7f, radius / 2 + 0.7f,
                radius / 2 + 0.1f, paint);
        paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
        canvas.drawBitmap(sbmp, rect, rect, paint);

        return output;
    }

}

回复于 2024-04-29T08:07:58+08:00

试试这个 .

public class RoundedImageView extends android.support.v7.widget.AppCompatImageView {

    private int borderWidth = 4;
    private int viewWidth;
    private int viewHeight;
    private Bitmap image;
    private Paint paint;
    private Paint paintBorder;
    private BitmapShader shader;

    public RoundedImageView(Context context)
    {
        super(context);
        setup();
    }

    public RoundedImageView(Context context, AttributeSet attrs)
    {
        super(context, attrs);
        setup();
    }

    public RoundedImageView(Context context, AttributeSet attrs, int defStyle)
    {
        super(context, attrs, defStyle);
        setup();
    }

    private void setup()
    {
        paint = new Paint();
        paint.setAntiAlias(true);

        paintBorder = new Paint();
        setBorderColor(Color.WHITE);
        paintBorder.setAntiAlias(true);
        this.setLayerType(LAYER_TYPE_SOFTWARE, paintBorder);

        paintBorder.setShadowLayer(4.0f, 0.0f, 2.0f, Color.WHITE);
    }

    public void setBorderWidth(int borderWidth)
    {
        this.borderWidth = borderWidth;
        this.invalidate();
    }

    public void setBorderColor(int borderColor)
    {
        if (paintBorder != null)
            paintBorder.setColor(borderColor);

        this.invalidate();
    }

    private void loadBitmap()
    {
        BitmapDrawable bitmapDrawable = (BitmapDrawable) this.getDrawable();

        if (bitmapDrawable != null)
            image = bitmapDrawable.getBitmap();
    }

    @SuppressLint("DrawAllocation")
    @Override
    public void onDraw(Canvas canvas)
    {
        loadBitmap();

        if (image != null)
        {
            shader = new BitmapShader(Bitmap.createScaledBitmap(image, canvas.getWidth(), canvas.getHeight(), false), Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
            paint.setShader(shader);
            int circleCenter = viewWidth / 2;
            canvas.drawCircle(circleCenter + borderWidth, circleCenter + borderWidth, circleCenter + borderWidth - 4.0f, paintBorder);
            canvas.drawCircle(circleCenter + borderWidth, circleCenter + borderWidth, circleCenter - 4.0f, paint);
        }
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec)
    {
        int width = measureWidth(widthMeasureSpec);
        int height = measureHeight(heightMeasureSpec, widthMeasureSpec);

        viewWidth = width - (borderWidth * 2);
        viewHeight = height - (borderWidth * 2);

        setMeasuredDimension(width, height);
    }

    private int measureWidth(int measureSpec)
    {
        int result = 0;
        int specMode = MeasureSpec.getMode(measureSpec);
        int specSize = MeasureSpec.getSize(measureSpec);

        if (specMode == MeasureSpec.EXACTLY)
        {
            result = specSize;
        }
        else
        {
            // Measure the text
            result = viewWidth;
        }

        return result;
    }

    private int measureHeight(int measureSpecHeight, int measureSpecWidth)
    {
        int result = 0;
        int specMode = MeasureSpec.getMode(measureSpecHeight);
        int specSize = MeasureSpec.getSize(measureSpecHeight);

        if (specMode == MeasureSpec.EXACTLY)
        {
            result = specSize;
        }
        else
        {
            result = viewHeight;
        }

        return (result + 2);
     }
 }

并在布局中使用此ImageView，如：

<com.app.Demo.RoundedImageView
     android:id="@+id/iv_profileImage"
     android:layout_width="70dp"
     android:layout_height="70dp"
     android:layout_centerHorizontal="true"
    />

回复于 2024-04-29T08:07:58+08:00

正如Orhan Obut的回答所述，但随着变化：

<ImageView
    android:layout_width="0dp"
    android:layout_height="match_parent"
    android:src="@drawable/img"
    android:layout_weight="75" />

避免图像的延伸 . 和img.xml：

<?xml version="1.0" encoding="utf-8"?><layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@drawable/profile" />
<item android:drawable="@drawable/circle" /></layer-list>

（没有更改）和circle.xml：

<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:innerRadiusRatio="2"
android:shape="ring"
android:thickness="300dp"
android:useLevel="false">
<solid android:color="@android:color/white"/>
<stroke
    android:width="2dp"
    android:color="@android:color/black"/>
</shape>

这里环的厚度最大 - 1000dp
和radiusRatio是图像宽度的一半（最大环宽，是吗？） - 2
如果需要，笔划是必需的边框 .
我使用了square png image（profile.png），顺便说一句 . 具有相同的宽度和高度 . 对于任意ImageView维度，这是正确的 .
enter image description here

回复于 2024-04-29T08:07:58+08:00

ImageView循环通过xml

17 回答

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