通过XML循环的ImageView

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

这是我设计的最简单的方法。试试这个。

依赖关系

implementation 'androidx.appcompat:appcompat:1.3.0-beta01' implementation 'androidx.cardview:cardview:1.0.0' <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> If you are working on android versions above lollipop <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>

添加边界圆ImageView -最新版本

用另一个比内部CardView稍大的CardView包装它，并设置它的背景色，为圆形图像添加边框。你可以增加外部CardView的大小来增加边框的厚度。

<androidx.cardview.widget.CardView
  android:layout_width="155dp"
  android:layout_height="155dp"
  app:cardCornerRadius="250dp"
  app:cardBackgroundColor="@color/white">

    <androidx.cardview.widget.CardView
      android:layout_width="150dp"
      android:layout_height="150dp"
      app:cardCornerRadius="250dp"
      android:layout_gravity="center">

        <ImageView
          android:layout_width="150dp"
          android:layout_height="150dp"
          android:src="@drawable/default_user"
          android:scaleType="centerCrop"/>

   </androidx.cardview.widget.CardView>

 </androidx.cardview.widget.CardView>

2016-02-09 08:31:55

其他回答

另一个想法是使用ImageView的clipToOutline属性。

这是一个布局示例:

<androidx.constraintlayout.widget.ConstraintLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <!-- Simple view to draw borders for an image,
         borders will be rounded because of the oval-shaped background. -->
    <View
        android:id="@+id/v_border"
        android:layout_width="50dp"
        android:layout_height="50dp"
        android:background="@drawable/shape_border"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <!-- Image itself: fits the border view, 
         a margin serves as a border width;
         the key point here - is a background shape which will clip the view to its forms. -->
    <ImageView
        android:id="@+id/iv_image"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_margin="4dp"
        android:background="@drawable/shape_oval"
        android:src="@mipmap/ic_launcher"
        app:layout_constraintBottom_toBottomOf="@+id/v_border"
        app:layout_constraintEnd_toEndOf="@+id/v_border"
        app:layout_constraintStart_toStartOf="@+id/v_border"
        app:layout_constraintTop_toTopOf="@+id/v_border" />

</androidx.constraintlayout.widget.ConstraintLayout>

这是我们的shape_border可绘制对象:

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="oval">
    <solid android:color="#FF00FF" />
</shape>

和shape_oval drawable:

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

你在代码中唯一要做的就是启用clipToOutline属性:

binding.ivImage.clipToOutline = true

当然，您甚至可以使用一些BindingAdapter来避免这一行代码。

2020-07-16 22:02:27

我希望这对你有所帮助。

1）可塑性图像视图

<com.google.android.material.imageview.ShapeableImageView
        android:layout_width="250dp"
        android:layout_height="250dp"
        android:padding="5dp"
        app:strokeWidth="10dp"
        app:strokeColor="@android:color/darker_gray"
        app:shapeAppearanceOverlay="@style/circleImageView"
        android:src="@drawable/profile"
        android:layout_margin="10dp"/>


 Style add here: res/values/styles.xml 
<style name="circleImageView" parent="">
    <item name="cornerFamily">rounded</item>
    <item name="cornerSize">50%</item>
  </style>

完整的描述请查看这里:来源在这里。

2）圆图像视图

 <de.hdodenhof.circleimageview.CircleImageView
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/profile_image"
    android:layout_width="96dp"
    android:layout_height="96dp"
    android:src="@drawable/profile"
    app:civ_border_width="2dp"
    app:civ_border_color="#FF000000"/>

别忘了实现:Gradle Scripts > build。gradle (Module: app) >依赖项

     implementation 'de.hdodenhof:circleimageview:3.1.0'

完整的描述请查看这里:来源在这里。

3）循环图像视图

<com.mikhaellopez.circularimageview.CircularImageView
    android:layout_width="250dp"
    android:layout_height="250dp"
    android:src="@drawable/image"
    app:civ_border_color="#3f51b5"
    app:civ_border_width="4dp"
    app:civ_shadow="true"
    app:civ_shadow_radius="10"
    app:civ_shadow_color="#3f51b5"/>

别忘了实现:Gradle Scripts > build。gradle (Module: app) >依赖项

     implementation 'com.mikhaellopez:circularimageview:4.3.1'

完整的描述请查看这里:来源在这里。

2016-04-14 03:38:48

在glide库和RoundedBitmapDrawableFactory类的帮助下，很容易实现。您可能需要创建圆形占位符映像。

滑翔V4:

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

滑翔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);
            }
        });

对于Picasso RoundedTransformation，这是一个非常好的解决方案，提供了一个额外的选择，在顶部或底部边缘的图像。

2016-10-14 05:56:52

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);
     }
 }

然后在布局中使用这个ImageView:

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

2017-11-07 11:55:18

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"/>

2015-11-30 10:56:08

通过XML循环的ImageView

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