Fresco 使用databinding @BindingAdapter显示图片

import android.content.res.Resources;
import android.databinding.BindingAdapter;
import android.graphics.PointF;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.text.TextUtils;
import android.util.TypedValue;

import com.facebook.drawee.drawable.ScalingUtils;
import com.facebook.drawee.generic.RoundingParams;
import com.facebook.drawee.view.SimpleDraweeView;

import java.io.File;

/**
 * Created by wanghailong on 2016/9/27/0027.
 */

public class FrescoUtil {

    public static RoundingParams circleParams = null;

    public static RoundingParams roundingParams = null;

    public static SimpleDraweeView imageView = null;

    public static String getHttpUrl(String imageUrl) {


        return imageUrl;
    }


    /**
     * Fresco 返回圆形图片的配置参数
     * 使用方法 SimpleDraweeView.getHierarchy().setRoundingParams(FrescoUtil.getRoundParams)
     *
     * @return
     */
    public static RoundingParams getCircleParams() {
        if (null == circleParams) {
            synchronized (FrescoUtil.class) {
                if (null == circleParams) {
                    circleParams = new RoundingParams();
                    circleParams.setRoundAsCircle(true);
                }
            }
        }
        return circleParams;
    }

    public static RoundingParams getRoundingParams(int round) {
        roundingParams = new RoundingParams();
        roundingParams.setCornersRadius(round);
        return roundingParams;
    }


    /**
     * Fresco加载圆形图片
     *
     * @param imageView
     * @param imageUrl  //     * @param defaultImageID
     */
    public static void loadCircleImage(SimpleDraweeView imageView, String imageUrl, int defaultDrawableId) {
        imageUrl = getHttpUrl(imageUrl);
        if (!TextUtils.isEmpty(imageUrl)) {
            imageView.getHierarchy().setRoundingParams(getCircleParams());
            imageView.getHierarchy().setActualImageScaleType(ScalingUtils.ScaleType.FOCUS_CROP);
            PointF point = new PointF();
            point.set(0.5f, 0.0f);
            imageView.getHierarchy().setActualImageFocusPoint(point);
            imageView.setImageURI(Uri.parse(imageUrl));
        } else {
            loadResourceCircleImage(imageView, defaultDrawableId, 0);
        }
    }

    /**
     * Fresco加载圆形图片
     *
     * @param imageView
     * @param imageUrl
     * @param defaultImage
     */

    @BindingAdapter({"circleUrl", "defaultDrawable"})
    public static void loadCircleImage(SimpleDraweeView imageView, String imageUrl, Drawable defaultImage) {
        imageUrl = getHttpUrl(imageUrl);
        if (!TextUtils.isEmpty(imageUrl)) {
            imageView.getHierarchy().setRoundingParams(getCircleParams());
            imageView.getHierarchy().setActualImageScaleType(ScalingUtils.ScaleType.FOCUS_CROP);
            PointF point = new PointF();
            point.set(0.5f, 0.0f);
            imageView.getHierarchy().setActualImageFocusPoint(point);
            imageView.setImageURI(Uri.parse(imageUrl));
        } else {
//            loadResourceCircleImage(imageView, defaultImageID, 0);
            imageView.setImageDrawable(defaultImage);
        }

    }

    /**
     * 加载网络图片圆角
     *
     * @param imageView
     * @param imageUrl
     * @param round
     * @param defaultImage
     */
    @BindingAdapter({"roundUrl", "round", "defaultDrawable"})
    public static void loadRoundImage(SimpleDraweeView imageView, String imageUrl, int round, Drawable defaultImage) {
        imageUrl = getHttpUrl(imageUrl);
        int pix = dip2px(round);
        if (!TextUtils.isEmpty(imageUrl)) {
            imageView.getHierarchy().setRoundingParams(getRoundingParams(pix));
            imageView.setImageURI(Uri.parse(imageUrl));
        } else {
            imageView.setImageDrawable(defaultImage);
        }
    }

    /**
     * 加载网络图片圆角
     *
     * @param imageView
     * @param imageUrl
     * @param round
     * @param imageId
     */
    public static void loadRoundImage(SimpleDraweeView imageView, String imageUrl, int round, int imageId) {
        imageUrl = getHttpUrl(imageUrl);
        int pix = dip2px(round);
        if (!TextUtils.isEmpty(imageUrl)) {
            imageView.getHierarchy().setRoundingParams(getRoundingParams(pix));
            imageView.setImageURI(Uri.parse(imageUrl));
        } else {
            imageView.setBackgroundResource(imageId);
        }
    }

    /**
     * 加载网络图片，图片的顶部为圆角
     *
     * @param imageView
     * @param imageUrl
     * @param round
     * @param defaultImageID
     */
    public static void loadTopRoundImage(SimpleDraweeView imageView, String imageUrl, int round, int defaultImageID) {
        imageUrl = getHttpUrl(imageUrl);
        int pix = dip2px(round);
        if (!TextUtils.isEmpty(imageUrl)) {
            imageView.getHierarchy().setRoundingParams(getRoundingParams(pix).setCornersRadii(pix, pix, 0, 0));
            imageView.setImageURI(Uri.parse(imageUrl));
        } else {
            imageView.setBackgroundResource(defaultImageID);
        }
    }

    /**
     * 加载网络图片，图片的顶部为圆角
     *
     * @param imageView
     * @param imageUrl
     * @param round
     * @param defaultDrawable
     */
    @BindingAdapter({"topRoundUrl", "round", "defaultDrawable"})
    public static void loadTopRoundImage(SimpleDraweeView imageView, String imageUrl, int round, Drawable defaultDrawable) {
        imageUrl = getHttpUrl(imageUrl);
        int pix = dip2px(round);
        if (!TextUtils.isEmpty(imageUrl)) {
            imageView.getHierarchy().setRoundingParams(getRoundingParams(pix).setCornersRadii(pix, pix, 0, 0));
            imageView.setImageURI(Uri.parse(imageUrl));
        } else {
            imageView.setImageDrawable(defaultDrawable);
        }
    }


    /**
     * 加载矩形图片
     *
     * @param imageView
     * @param imageUrl
     * @param defaultImageID
     */
    public static void loadImage(SimpleDraweeView imageView, String imageUrl, int defaultImageID) {

        imageUrl = getHttpUrl(imageUrl);
        if (!TextUtils.isEmpty(imageUrl)) {
            imageView.setImageURI(Uri.parse(imageUrl));
        } else {
            if (0 == defaultImageID) {
            } else {
                imageView.setImageResource(defaultImageID);
            }
        }
    }

    @BindingAdapter({"url", "defaultDrawable"})
    public static void loadImage(SimpleDraweeView imageView, String imageUrl, Drawable defaultDrawable) {
        imageUrl = getHttpUrl(imageUrl);
        if (!TextUtils.isEmpty(imageUrl)) {
            imageView.setImageURI(Uri.parse(imageUrl));
        } else {
            if (null == defaultDrawable) {
            } else {
                imageView.setImageDrawable(defaultDrawable);
            }
        }
    }

    /**
     * fresco 加载本地图片
     * 已测试

     */
    /**
     * 加载资源图片，顶部为圆角
     *
     * @param imageView
     * @param round
     */

    @BindingAdapter(value = {"topRoundDrawable", "round", "defaultDrawable"}, requireAll = false)
    public static void loadTopRoundimage(SimpleDraweeView imageView, Drawable topRoundDrawable, int round, Drawable defaultDrawable) {
        int pix = dip2px(round);
        if (null != topRoundDrawable) {
            imageView.getHierarchy().setRoundingParams(getRoundingParams(pix).setCornersRadii(pix, pix, 0, 0));
//            imageView.setImageURI(new Uri.Builder().scheme("res").path(String.valueOf(topRoundDrawable)).build());
            imageView.setImageDrawable(topRoundDrawable);
        } else if (null != defaultDrawable) {
            imageView.setImageDrawable(defaultDrawable);
        }
    }

    /**
     * 加载资源文件
     *
     * @param imageView
     * @param resourceDrawable
     * @param defaultImageResId
     */
    public static void loadResourceDrawable(SimpleDraweeView imageView, int resourceDrawable, int defaultImageResId) {
        if (0 != resourceDrawable) {
            imageView.setImageURI(new Uri.Builder().scheme("res").path(String.valueOf(resourceDrawable)).build());
        } else if (0 != defaultImageResId) {
            imageView.setBackgroundResource(defaultImageResId);
        }
    }

    @BindingAdapter({"resourceDrawable", "defaultDrawable"})
    public static void loadResourceDrawable(SimpleDraweeView imageView, Drawable resourceDrawable, Drawable defaultDrawable) {
        if (null != resourceDrawable) {
//            imageView.setImageURI(new Uri.Builder().scheme("res").path(String.valueOf(resourceDrawable)).build());
            imageView.setImageDrawable(resourceDrawable);
        } else if (null != defaultDrawable) {
            imageView.setImageDrawable(defaultDrawable);
        }
    }

    /**
     * fresco加载本地图片处理为圆形
     *
     * @param imageView
     * @param targetImageResId
     * @param defaultImageResId
     */
    public static void loadResourceCircleImage(SimpleDraweeView imageView, int targetImageResId, int defaultImageResId) {
        if (0 != targetImageResId) {
            imageView.getHierarchy().setRoundingParams(getCircleParams());
            imageView.setImageURI(new Uri.Builder().scheme("res").path(String.valueOf(targetImageResId)).build());
        } else {
            if (defaultImageResId != 0) {
                loadResourceCircleImage(imageView, defaultImageResId, 0);
            }
        }
    }

    @BindingAdapter({"circlRresourceDrawable", "defaultDrawable"})
    public static void loadCirclRresourceDrawable(SimpleDraweeView imageView, Drawable circlRresourceDrawable, Drawable defaultDrawable) {
        if (null != circlRresourceDrawable) {
            imageView.getHierarchy().setRoundingParams(getCircleParams());
//            imageView.setImageURI(new Uri.Builder().scheme("res").path(String.valueOf(circlRresourceDrawable)).build());
            imageView.setImageDrawable(circlRresourceDrawable);
        } else {
            if (defaultDrawable != null) {
                imageView.setImageDrawable(defaultDrawable);
            }
        }
    }

    /**
     * fresco加载本地图片需要输入图片的角度 int
     *
     * @param imageView
     * @param targetImageResId
     * @param defaultImageResId
     * @param round
     */

    public static void loadLocalRoundImage(SimpleDraweeView imageView, int targetImageResId, int defaultImageResId, int round) {
        if (0 != targetImageResId) {
            int pix = dip2px(round);
            imageView.getHierarchy().setRoundingParams(getRoundingParams(pix));
            imageView.setImageURI(new Uri.Builder().scheme("res").path(String.valueOf(targetImageResId)).build());
        } else if (0 != defaultImageResId) {
            imageView.setBackgroundResource(defaultImageResId);
        }
    }

    @BindingAdapter({"roundResourceDrawable", "round", "defaultDrawable"})
    public static void loadRoundResourceDrawable(SimpleDraweeView imageView, Drawable roundResourceDrawable, int round, Drawable defaultDrawable) {
        if (null != roundResourceDrawable) {
            int pix = dip2px(round);
            imageView.getHierarchy().setRoundingParams(getRoundingParams(pix));
            //imageView.setImageURI(new Uri.Builder().scheme("res").path(String.valueOf(roundResourceDrawable)).build());
            imageView.setImageDrawable(roundResourceDrawable);
        } else if (null != defaultDrawable) {
            imageView.setImageDrawable(defaultDrawable);
        }
    }

    /**
     * fresco加载手机设备上的图片
     *
     * @param imageView
     * @param filePath
     * @param defaultImageResId
     */
    public static void loadFileImage(SimpleDraweeView imageView, String filePath, int defaultImageResId) {
        if (!TextUtils.isEmpty(filePath)) {
            if (new File(filePath).exists()) {
                Uri uri = Uri.parse("file://" + filePath);
                imageView.setImageURI(uri);
            } else {
                imageView.setBackgroundResource(defaultImageResId);
            }
        } else if (0 != defaultImageResId) {
            imageView.setBackgroundResource(defaultImageResId);
        }
    }

    /**
     * fresco加载设备上的文件，显示为圆形
     *
     * @param imageView
     * @param filePath
     * @param defaultImageResId
     */
    public static void LoadFileCircleImage(SimpleDraweeView imageView, String filePath, int defaultImageResId) {
        if (!TextUtils.isEmpty(filePath)) {
            if (new File(filePath).exists()) {
                imageView.getHierarchy().setRoundingParams(getCircleParams());
                Uri uri = Uri.parse("file://" + filePath);
                imageView.setImageURI(uri);
            } else {
                imageView.setBackgroundResource(defaultImageResId);
            }
        } else if (0 != defaultImageResId) {
            imageView.setBackgroundResource(defaultImageResId);
        }

    }

    /**
     * fresco加载设备图片显示为圆形，传入角度
     *
     * @param imageView
     * @param filePath
     * @param defaultImageResId
     * @param round
     */
    public static void LoadFileRoundImage(SimpleDraweeView imageView, String filePath, int defaultImageResId, int round) {
        if (!TextUtils.isEmpty(filePath)) {
            if (new File(filePath).exists()) {
                imageView.getHierarchy().setRoundingParams(getRoundingParams(round));
                Uri uri = Uri.parse("file://" + filePath);
                imageView.setImageURI(uri);
            } else {
                imageView.setBackgroundResource(defaultImageResId);
            }
        } else if (0 != defaultImageResId) {
            imageView.setBackgroundResource(defaultImageResId);
        }
    }

    public static int dip2px(int dip) {

        Resources r = Resources.getSystem();

        return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dip, r.getDisplayMetrics());
    }
}

在xml文件中的用法

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

    <data>

        <import type="debug.been.ImageBeen" />


        <import type="java.util.List" />


        <variable
            name="image"
            type="debug.been.ImageBeen" />

        <variable
            name="list"
            type="java.util.List&lt;debug.been.ImageBeen>" />


    </data>

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

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:background="@android:color/black"
            android:gravity="center"
            android:orientation="vertical">


            <base.imageloader.view.MView
                android:id="@+id/image5"
                android:layout_width="50dp"
                android:layout_height="50dp"
                app:circleUrl="http://noavatar.youkuaiyun.com/C/9/2/1_wangbofei.jpg"
                app:defaultDrawable="@drawable/open_qilu" />

            <base.imageloader.view.MView
                android:layout_width="50dp"
                android:layout_height="50dp"
                app:defaultDrawable="@drawable/open_qilu"
                app:round="10"
                app:roundUrl="http://noavatar.youkuaiyun.com/C/9/2/1_wangbofei.jpg" />

            <base.imageloader.view.MView
                android:layout_width="50dp"
                android:layout_height="50dp"
                app:defaultDrawable="@drawable/open_qilu"
                app:round="10"
                app:topRoundUrl="http://noavatar.youkuaiyun.com/C/9/2/1_wangbofei.jpg" />

            <base.imageloader.view.MView
                android:layout_width="50dp"
                android:layout_height="50dp"
                app:defaultDrawable="@drawable/open_qilu"
                app:url="http://noavatar.youkuaiyun.com/C/9/2/1_wangbofei.jpg" />

            <base.imageloader.view.MView
                android:layout_width="50dp"
                android:layout_height="50dp"
                app:defaultDrawable="@{@drawable/open_qilu}"
                app:url="@{list[0].url}" />

            <base.imageloader.view.MView
                android:layout_width="50dp"
                android:layout_height="50dp"
                app:circleUrl="@{list[0].url}"
                app:defaultDrawable="@{@drawable/open_qilu}" />

            <base.imageloader.view.MView
                android:layout_width="50dp"
                android:layout_height="50dp"
                app:circleUrl="@{list[1].url}"
                app:defaultDrawable="@{@drawable/open_qilu}" />

            <base.imageloader.view.MView
                android:layout_width="50dp"
                android:layout_height="50dp"
                app:defaultDrawable="@{@drawable/ic_launcher}"
                app:resourceDrawable="@{@drawable/open_qilu}" />

            <base.imageloader.view.MView
                android:layout_width="50dp"
                android:layout_height="50dp"
                app:circlRresourceDrawable="@drawable/open_qilu"
                app:defaultDrawable="@drawable/ic_launcher" />

            <base.imageloader.view.MView
                android:layout_width="50dp"
                android:layout_height="50dp"
                app:defaultDrawable="@drawable/ic_launcher"
                app:round="10"
                app:topRoundDrawable="@drawable/open_qilu" />

            <base.imageloader.view.MView
                android:layout_width="50dp"
                android:layout_height="50dp"
                app:defaultDrawable="@drawable/open_qilu"
                app:round="10"
                app:roundResourceDrawable="@drawable/open_qilu" />

            <base.imageloader.view.MView
                android:id="@+id/image6"
                android:layout_width="50dp"
                android:layout_height="50dp" />

        </LinearLayout>
    </ScrollView>
</layout>

MView自定义控件

import android.content.Context;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.graphics.PointF;
import android.net.Uri;
import android.support.annotation.Nullable;
import android.text.TextUtils;
import android.util.AttributeSet;
import android.util.TypedValue;

import com.facebook.drawee.drawable.ScalingUtils;
import com.facebook.drawee.generic.GenericDraweeHierarchy;
import com.facebook.drawee.generic.RoundingParams;
import com.facebook.drawee.view.SimpleDraweeView;



/**
 * Created by Administrator on 2017/3/23/0023.
 */

public class MView extends SimpleDraweeView {
    private static RoundingParams circleParams = null;

    private static RoundingParams roundingParams = null;
    private String url = "";
    private String topRoundUrl = "";
    private String roundUrl = "";
    private String circleUrl = "";
    private int round = 0;
    private int defaultDrawable = 0;
    private int topRoundDrawable = 0;
    private int resourceDrawable = 0;
    private int circlRresourceDrawable = 0;
    private int roundResourceDrawable = 0;


    public MView(Context context, GenericDraweeHierarchy hierarchy) {
        super(context, hierarchy);
        init(context, null);
    }


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

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

    }

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

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

    /**
     * pvwx
     *
     * @param context
     * @param attrs
     */
    private void init(Context context, @Nullable AttributeSet attrs) {
        TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.MView);
        circleUrl = a.getString(R.styleable.MView_circleUrl);
        roundUrl = a.getString(R.styleable.MView_roundUrl);
        url = a.getString(R.styleable.MView_url);
        topRoundUrl = a.getString(R.styleable.MView_topRoundUrl);
        round = (int) a.getInt(R.styleable.MView_round, round);
        defaultDrawable = (int) a.getResourceId(R.styleable.MView_defaultDrawable, defaultDrawable);
        topRoundDrawable = (int) a.getResourceId(R.styleable.MView_topRoundDrawable, topRoundDrawable);
        roundResourceDrawable = (int) a.getResourceId(R.styleable.MView_roundResourceDrawable, roundResourceDrawable);
        circlRresourceDrawable = (int) a.getResourceId(R.styleable.MView_circlRresourceDrawable, circlRresourceDrawable);
        resourceDrawable = (int) a.getResourceId(R.styleable.MView_roundResourceDrawable, resourceDrawable);
a.recycle();
        if (!TextUtils.isEmpty(url)) {            setImage(url, defaultDrawable);        } else if (!TextUtils.isEmpty(circleUrl)) {            setCircleImage(circleUrl, defaultDrawable);        } else if (!TextUtils.isEmpty(roundUrl)) {            setRoundImage(roundUrl, round, defaultDrawable);        } else if (!TextUtils.isEmpty(topRoundUrl)) {            seteTopRoundImage(topRoundUrl, round, defaultDrawable);        } else if (0 != topRoundDrawable) {            //TODO 调用上圆角方法            setTopRoundDrawable(topRoundDrawable, round, defaultDrawable);        } else if (0 != roundResourceDrawable) {            //TODO 调用圆角方法            setRoundResourceDrawable(roundResourceDrawable, defaultDrawable, round);        } else if (0 != circlRresourceDrawable) {            setCirclRresourceDrawable(circlRresourceDrawable, defaultDrawable);            //TODO 调用圆形方法        } else if (0 != resourceDrawable) {            //TODO 调用加载本地图片方法            setResourceDrawable(resourceDrawable, defaultDrawable);        }    }    /**     * 加载圆形图片对应circleImage     *     * @param     * @param imageUrl     * @param defaultDrawableId     */    public void setCircleImage(String imageUrl, int defaultDrawableId) {        if (!TextUtils.isEmpty(imageUrl)) {            getHierarchy().setRoundingParams(getCircleParams());            getHierarchy().setActualImageScaleType(ScalingUtils.ScaleType.FOCUS_CROP);            PointF point = new PointF();            point.set(0.5f, 0.0f);            getHierarchy().setActualImageFocusPoint(point);            setImageURI(Uri.parse(imageUrl));        } else {            setImageResource(defaultDrawableId);        }    }    public void setRoundImage(String imageUrl, int round, int defaultImage) {        int pix = dip2px(round);        if (!TextUtils.isEmpty(imageUrl)) {            getHierarchy().setRoundingParams(getRoundingParams(pix));            setImageURI(Uri.parse(imageUrl));        } else {            setImageResource(defaultImage);        }    }    public void seteTopRoundImage(String imageUrl, int round, int defaultImageID) {        int pix = dip2px(round);        if (!TextUtils.isEmpty(imageUrl)) {            getHierarchy().setRoundingParams(getRoundingParams(pix).setCornersRadii(pix, pix, 0, 0));            setImageURI(Uri.parse(imageUrl));        } else {            setImageResource(defaultImageID);        }    }    public void setImage(String imageUrl, int defaultImageID) {        if (!TextUtils.isEmpty(imageUrl)) {            setImageURI(Uri.parse(imageUrl));        } else {            if (0 == defaultImageID) {            } else {                setImageResource(defaultImageID);            }        }    }    public void setRoundResourceDrawable(int roundResourceDrawable, int defaultImageResId, int round) {        if (0 != roundResourceDrawable) {            int pix = dip2px(round);            getHierarchy().setRoundingParams(getRoundingParams(pix));            setImageURI(new Uri.Builder().scheme("res").path(String.valueOf(roundResourceDrawable)).build());        } else if (0 != defaultImageResId) {            setImageResource(defaultImageResId);        }    }    /**     * 加载资源文件     *     * @param targetImageResId     * @param defaultImageResId     */    public void setResourceDrawable(int targetImageResId, int defaultImageResId) {        if (0 != targetImageResId) {            setImageURI(new Uri.Builder().scheme("res").path(String.valueOf(targetImageResId)).build());        } else if (0 != defaultImageResId) {            setImageResource(defaultImageResId);        }    }    /**     * fresco加载本地图片处理为圆形     *     * @param circlRresourceDrawable     * @param defaultImageResId     */    public void setCirclRresourceDrawable(int circlRresourceDrawable, int defaultImageResId) {        if (0 != circlRresourceDrawable) {            getHierarchy().setRoundingParams(getCircleParams());            setImageURI(new Uri.Builder().scheme("res").path(String.valueOf(circlRresourceDrawable)).build());        } else {            if (defaultImageResId != 0) {                setCirclRresourceDrawable(defaultImageResId, 0);            }        }    }    public void setTopRoundDrawable(int topRoundDrawable, int round, int defaultImageResId) {        int pix = dip2px(round);        if (0 != topRoundDrawable) {            getHierarchy().setRoundingParams(getRoundingParams(pix).setCornersRadii(pix, pix, 0, 0));            setImageURI(new Uri.Builder().scheme("res").path(String.valueOf(topRoundDrawable)).build());        } else if (0 != defaultImageResId) {            setImageResource(defaultImageResId);        }    }    /**     * Displays an image given by the uri.     *     * @param uri uri of the image     * @undeprecate     *///    @Override//    public void setImageURI(Uri uri) {//        setImageURI(uri, null);//    }    /**     * 圆形的配置     *     * @return     */    public static RoundingParams getCircleParams() {        if (null == circleParams) {            synchronized (MView.class) {                if (null == circleParams) {                    circleParams = new RoundingParams();                    circleParams.setRoundAsCircle(true);                }            }        }        return circleParams;    }    /**     * 圆角的配置     *     * @param round     * @return     */    public static RoundingParams getRoundingParams(int round) {        roundingParams = new RoundingParams();        roundingParams.setCornersRadius(round);        return roundingParams;    }    public static int dip2px(int dip) {        Resources r = Resources.getSystem();        return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dip, r.getDisplayMetrics());    }}
MView attr文件
<?xml version="1.0" encoding="utf-8"?>
<resources>
    <!-- MView-->
    <declare-styleable name="MView">
        <attr name="url" format="string" />
        <attr name="round" format="integer" />
        <attr name="defaultDrawable" format="reference" />
        <attr name="resourceDrawable" format="reference" />
        <attr name="circlRresourceDrawable" format="reference" />
        <attr name="roundResourceDrawable" format="reference" />
        <attr name="topRoundDrawable" format="reference" />
        <attr name="topRoundUrl" format="string" />
        <attr name="roundUrl" format="string" />
        <attr name="circleUrl" format="string" />

    </declare-styleable>
</resources>