我想让任何图像从我的ImageView是圆形的边界。

我搜索了一下,但没有找到任何有用的信息(我尝试的任何方法都不管用)。

如何通过XML实现这一点: 创建一个ImageView与某些src,并使它与边界圆形?


当前回答

我是这样做的,我在矢量图像中使用了背景色

ic_bg_picture.xml

 <vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="100dp"
    android:height="100dp"
    android:viewportWidth="100"
    android:viewportHeight="100">
  <path
      android:pathData="M100.6,95.5c0,-0.4 -0.1,-0.7 0,-1.1c-0.2,-0.7 -0.2,-1.4 -0.1,-2.1c0,-0.1 0,-0.2 0,-0.3c-0.1,-0.6 -0.1,-1.2 0,-1.8c-1,-1.3 -0.3,-2.9 -0.3,-4.3c-0.1,-28.7 -0.1,-57.3 -0.1,-86C68,-0.1 35.9,-0.1 3.8,-0.2C0.7,-0.2 0,0.5 0,3.6c0.1,32.1 0.1,64.2 0.1,96.2c31,0 62,-0.1 92.9,0.1c3.6,0 6.3,-0.2 7.5,-3.2C100.5,96.4 100.5,95.9 100.6,95.5zM46.3,95.2C26.4,94 2,74.4 3.8,46.8C5.1,27.2 24.4,2.7 52.6,4.6c20.2,1.4 43,21.3 41.5,45.1C96.1,72.4 73,96.8 46.3,95.2z"
      android:fillColor="#6200EE"/>
</vector>

在我的情况下,我创建了一个向量,并更改android:fillColor="#6200EE"

通过我背景的颜色

  <ImageView
    android:id="@+id/iv_profile_image"
    android:layout_width="100dp"
    android:layout_height="100dp"
    android:contentDescription="@string/app_name"
    app:srcCompat="@color/colorPrimaryDark" />

<ImageView
    android:id="@+id/container_profile_image"
    android:layout_width="100dp"
    android:layout_height="100dp"
    android:contentDescription="@string/app_name"
    app:srcCompat="@drawable/ic_bg_picture"/>

其他回答

如果你在应用中使用材质设计,那么就使用这个

<com.google.android.material.card.MaterialCardView
            android:layout_width="75dp"
            android:layout_height="75dp"
            app:cardCornerRadius="50dp"
            app:strokeWidth="1dp"
            app:strokeColor="@color/black">
            <ImageView
                android:layout_width="fill_parent"
                android:layout_height="fill_parent"
                android:id="@+id/circular_image"
                android:scaleType="fitCenter"
                android:src="@drawable/your_img" />
        </com.google.android.material.card.MaterialCardView>

下面是最简单的方法之一,使用以下代码:

依赖关系

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

XML代码

<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

截图:

来源:Circular ImageView GitHub Repository

使用材质组件库只需使用ShapeableImageView。 Somethig:

<com.google.android.material.imageview.ShapeableImageView
    app:shapeAppearanceOverlay="@style/roundedImageViewRounded"
    app:strokeColor="@color/....."
    app:strokeWidth="1dp"
    ...
    />

:

  <style name="roundedImageViewRounded">
    <item name="cornerFamily">rounded</item>
    <item name="cornerSize">50%</item>
  </style>

注意:它至少需要1.2.0版本。


使用jetpack合成,你可以使用CircleShape应用剪辑修饰器:

Image(
    painter = painterResource(R.drawable.xxxx),
    contentDescription = "xxxx",
    contentScale = ContentScale.Crop,
    modifier = Modifier
        .size(100.dp)
        .clip(CircleShape)
        .border(2.dp, Color.Blue, CircleShape)
)

你可以简单地使用AndroidX ImageFilterView。

 <androidx.constraintlayout.utils.widget.ImageFilterView
        android:layout_width="48dp"
        android:layout_height="48dp"
        android:layout_marginStart="@dimen/margin_medium"
        android:layout_marginBottom="@dimen/margin_medium"
        android:background="@color/white"
        android:padding="@dimen/margin_small"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:roundPercent="1"
        app:srcCompat="@drawable/ic_gallery" />

创建一个CustomImageview,然后简单地覆盖它的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);

}

如果你想要的代码自定义小部件以及:-

CircularImageView.java

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Path;
import android.graphics.RectF;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.widget.ImageView;

import androidx.annotation.Nullable;

public class CircularImageView extends ImageView {

    private Drawable image;

    public CircularImageView(Context context) {
        super(context);

        init(null, 0);
    }

    public CircularImageView(Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);

        init(attrs, 0);
    }

    public CircularImageView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);

        init(attrs, defStyleAttr);
    }

    @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);

    }

    private void init(AttributeSet attrs, int defStyle) {
        TypedArray a = Utils.CONTEXT.getTheme().obtainStyledAttributes(attrs, R.styleable.CircularImageView, 0, 0);
        try {
            image = a.getDrawable(R.styleable.CircularImageView_src);
        } finally {
            a.recycle();
        }

        this.setImageDrawable(image);
    }
}

此外,在res/attrs.xml中添加以下代码来创建所需的属性

<declare-styleable name="CircularImageView">
        <attr name="src" format="reference" />
</declare-styleable>