Glide加载图片实现圆角

 ViewGroup.LayoutParams layoutParams = holder.mRecomdimg.getLayoutParams();
  Glide.with(mActivity).load(mList.get(position).getImgs())
                    .override(layoutParams.width, Integer.MAX_VALUE)//图片自适应高度
                    .transform(new FitCenter(), new GlideRoundTransform(mActivity, 5))//圆角5
                    .placeholder(R.mipmap.repalec)//占位图
                    .into(holder.mimg);

package com.zhaokaobao.dxs.utils;

import android.content.Context;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.RectF;

import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
import com.bumptech.glide.load.resource.bitmap.BitmapTransformation;

import java.security.MessageDigest;

/**
 * date:2020/8/31 0031
 * author:wsm (Administrator)
 * funcation:
 */
public class GlideRoundTransform extends BitmapTransformation {
    
    
    private static final String ID = "com.star.wall.glide.GlideRoundTransform";

    private float radius = 0f;

    public GlideRoundTransform(Context context) {
    
    
        this(context, 4);
    }

    public GlideRoundTransform(Context context, int dp) {
    
    
        this.radius =Resources.getSystem().getDisplayMetrics().density * dp;
    }

    @Override
    protected Bitmap transform(BitmapPool pool, Bitmap toTransform, int outWidth, int outHeight) {
    
    
        return roundCrop(pool, toTransform);
    }

    private Bitmap roundCrop(BitmapPool pool, Bitmap source) {
    
    
        if (source == null) return null;

        Bitmap result = pool.get(source.getWidth(), source.getHeight(), Bitmap.Config.ARGB_8888);
        if (result == null) {
    
    
            result = Bitmap.createBitmap(source.getWidth(), source.getHeight(), Bitmap.Config.ARGB_8888);
        }

        Canvas canvas = new Canvas(result);
        Paint paint = new Paint();
        paint.setShader(new BitmapShader(source, BitmapShader.TileMode.CLAMP, BitmapShader.TileMode.CLAMP));
        paint.setAntiAlias(true);
        RectF rectF = new RectF(0f, 0f, source.getWidth(), source.getHeight());
        canvas.drawRoundRect(rectF, radius, radius, paint);
        return result;
    }

    @Override
    public boolean equals(Object o) {
    
    
        if (o instanceof GlideRoundTransform) {
    
    
            GlideRoundTransform other = (GlideRoundTransform) o;
            return radius == other.radius;
        }
        return false;
    }

    @Override
    public int hashCode() {
    
    
        return (ID + "_" + radius).hashCode();
    }

    @Override
    public void updateDiskCacheKey(MessageDigest messageDigest) {
    
    
        messageDigest.update((ID + "_" + radius).getBytes());
    }
}