Glide 圆角图片

1、自定义GlideRoundRect类，继承BitmapTransformation

package com.likebamboo.phoneshow.util;

import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;

import com.bumptech.glide.load.resource.bitmap.BitmapTransformation;

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 android.widget.ImageView;

public class GlideRoundRect extends BitmapTransformation {

    private static float radius = 0f;

    public GlideRoundRect(Context context) {

        this(context, 4);

    }

    public GlideRoundRect(Context context, int dp) {

        super(context);

        this.radius = Resources.getSystem().getDisplayMetrics().density * dp;

    }

    @Override protected Bitmap transform(BitmapPool pool, Bitmap toTransform, int outWidth, int outHeight) {

        return roundCrop(pool, toTransform);

    }

    private static 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 String getId() {

        return getClass().getName() + Math.round(radius);

    }

}

调用资源文件图片，显示成圆角：

iv_heard=(ImageView) findViewById(R.id.iv_heard);

        int resourceId = R.drawable.touxiang;

        Glide.with(this).

        load(resourceId).

        transform(new GlideRoundRect(this,5))

        .into(iv_heard);

加载url图片：

Glide.with(context)

        .load(HttpRequest.PHOTO+prodata.getIcon())

        .centerCrop()

        .transform(new RoundRect(context,15))

        .into(holder.iv_hplist_icon);