Glide封装个工具类直接使用

Glide 是 Google 员工的开源项目, Google I/O 上被推荐使用,一个高效、开源、Android设备上的媒体管理框架,它遵循BSD、MIT以及Apache 2.0协议发布。Glide具有获取、解码和展示视频剧照、图片、动画等功能,它还有灵活的API,这些API使开发者能够将Glide应用在几乎任何网络协议栈里。创建Glide的主要目的有两个,一个是实现平滑的图片列表滚动效果,另一个是支持远程图片的获取、大小调整和展示。

Glide的一般使用相信大家都知道,主要侧重怎么封装使用,看二就行了

一、Glide使用

依赖

需要support-v4库的支持,如果你的项目没有support-v4库(项目默认已经添加了),还需要添加support-v4依赖

    compile 'com.android.support:support-v4:25.2.0'
    compile 'com.github.bumptech.glide:glide:3.7.0'
简单使用:
Glide
    .with(this)
    .load("http://inthecheesefactory.com/uploads/source/nestedfragment/fragments.png")
    .into(imageView);
Glide.with()使用

with(Context context). 使用Application上下文,Glide请求将不受Activity/Fragment生命周期控制。
with(Activity activity).使用Activity作为上下文,Glide的请求会受到Activity生命周期控制。
with(FragmentActivity activity).Glide的请求会受到FragmentActivity生命周期控制。
with(android.app.Fragment fragment).Glide的请求会受到Fragment 生命周期控制。
with(android.support.v4.app.Fragment fragment).Glide的请求会受到Fragment生命周期控制。

requestManager.load()使用

Glide基本可以load任何可以拿到的媒体资源,如:

  • loadSD卡资源:load("file://"+ Environment.getExternalStorageDirectory().getPath()+"/test.jpg")
  • loadassets资源:load("file:///android_asset/f003.gif")
  • loadraw资源:load("Android.resource://com.frank.glide/raw/raw_1")或load("android.resource://com.frank.glide/raw/"+R.raw.raw_1)
  • loaddrawable资源:load("android.resource://com.frank.glide/drawable/news")或load("android.resource://com.frank.glide/drawable/"+R.drawable.news)
  • loadContentProvider资源:load("content://media/external/images/media/139469")
  • loadhttp资源:load("http://img.my.csdn.net/uploads/201508/05/1438760757_3588.jpg")
  • loadhttps资源:load("https://img.alicdn.com/tps/TB1uyhoMpXXXXcLXVXXXXXXXXXX-476-538.jpg_240x5000q50.jpg_.webp")

load不限于String类型,还可以:
load(Uri uri),load(File file),load(Integer resourceId),load(URL url),load(byte[] model),load(T model),loadFromMediaStore(Uri uri)。
load的资源也可以是本地视频,如果想要load网络视频或更高级的操作可以使用VideoView等其它控件完成


GenericRequestBuilder使用

GenericRequestBuilder
是最顶层的Request Builder,用于处理选项设置和开始一般resource类型资源的加载。其中ModelType
是指代表资源的类型,如"http://img.my.csdn.net/uploads/201508/05/1438760757_3588.jpg"这个String就代表了一张图片资源,所以这个ModelType就是String。DataType
是指ModelLoader提供的,可以被ResourceDecoder解码的数据类型。ResourceType
是指将要加载的resource类型。TranscodeType
是指已解码的资源将要被转成的资源类型。

1、thumbnail(float sizeMultiplier). 请求给定系数的缩略图。如果缩略图比全尺寸图先加载完,就显示缩略图,否则就不显示。系数sizeMultiplier必须在(0,1)之间,可以递归调用该方法。
2、sizeMultiplier(float sizeMultiplier). 在加载资源之前给Target大小设置系数。
3、diskCacheStrategy(DiskCacheStrategy strategy).设置缓存策略。DiskCacheStrategy.SOURCE:缓存原始数据,DiskCacheStrategy.RESULT:缓存变换(如缩放、裁剪等)后的资源数据,DiskCacheStrategy.NONE:什么都不缓存,DiskCacheStrategy.ALL:缓存SOURC和RESULT。默认采用DiskCacheStrategy.RESULT策略,对于download only操作要使用DiskCacheStrategy.SOURCE。
4、priority(Priority priority). 指定加载的优先级,优先级越高越优先加载,但不保证所有图片都按序加载。枚举Priority.IMMEDIATE,Priority.HIGH,Priority.NORMAL,Priority.LOW。默认为Priority.NORMAL。
5、dontAnimate(). 移除所有的动画。
6、animate(int animationId). 在异步加载资源完成时会执行该动画。
7、animate(ViewPropertyAnimation.Animator animator). 在异步加载资源完成时会执行该动画。
8、placeholder(int resourceId). 设置资源加载过程中的占位Drawable。
9、placeholder(Drawable drawable). 设置资源加载过程中的占位Drawable。
10、fallback(int resourceId). 设置model为空时要显示的Drawable。如果没设置fallback,model为空时将显示error的Drawable,如果error的Drawable也没设置,就显示placeholder的Drawable。
11、fallback(Drawable drawable).设置model为空时显示的Drawable。
12、error(int resourceId).设置load失败时显示的Drawable。
13、error(Drawable drawable).设置load失败时显示的Drawable。
14、listener(RequestListener requestListener). 监听资源加载的请求状态,可以使用两个回调:onResourceReady(R resource, T model, Target target, boolean isFromMemoryCache, boolean isFirstResource)
和onException(Exception e, T model, Target target, boolean isFirstResource)
,但不要每次请求都使用新的监听器,要避免不必要的内存申请,可以使用单例进行统一的异常监听和处理。
15、skipMemoryCache(boolean skip). 设置是否跳过内存缓存,但不保证一定不被缓存(比如请求已经在加载资源且没设置跳过内存缓存,这个资源就会被缓存在内存中)。
16、override(int width, int height). 重新设置Target的宽高值(单位为pixel)。
17、into(Y target).设置资源将被加载到的Target。
18、into(ImageView view). 设置资源将被加载到的ImageView。取消该ImageView之前所有的加载并释放资源。
19、into(int width, int height). 后台线程加载时要加载资源的宽高值(单位为pixel)。
20、preload(int width, int height). 预加载resource到缓存中(单位为pixel)。
21、asBitmap(). 无论资源是不是gif动画,都作为Bitmap对待。如果是gif动画会停在第一帧。
22、asGif().把资源作为GifDrawable对待。如果资源不是gif动画将会失败,会回调.error()


具体使用:

1、禁止内存缓存:

.skipMemoryCache(true)

2、清除内存缓存:

// 必须在UI线程中调用
Glide.get(context).clearMemory();

3、禁止磁盘缓存:

   .diskCacheStrategy(DiskCacheStrategy.NONE)

4、清除磁盘缓存:

   // 必须在后台线程中调用,建议同时clearMemory()
   Glide.get(applicationContext).clearDiskCache();

5、获取缓存大小:

   new GetDiskCacheSizeTask(textView).execute(new File(getCacheDir(), DiskCache.Factory.DEFAULT_DISK_CACHE_DIR));
class GetDiskCacheSizeTask extends AsyncTask {
private final TextView resultView;

public GetDiskCacheSizeTask(TextView resultView) {
    this.resultView = resultView;
}

@Override
protected void onPreExecute() {
    resultView.setText("Calculating...");
}

@Override
protected void onProgressUpdate(Long... values) { /* onPostExecute(values[values.length - 1]); */ }

@Override
protected Long doInBackground(File... dirs) {
    try {
        long totalSize = 0;
        for (File dir : dirs) {
            publishProgress(totalSize);
            totalSize += calculateSize(dir);
        }
        return totalSize;
    } catch (RuntimeException ex) {
        final String message = String.format("Cannot get size of %s: %s", Arrays.toString(dirs), ex);
        new Handler(Looper.getMainLooper()).post(new Runnable() {
            @Override
            public void run() {
                resultView.setText("error");
                Toast.makeText(resultView.getContext(), message, Toast.LENGTH_LONG).show();
            }
        });
    }
    return 0L;
}

@Override
protected void onPostExecute(Long size) {
    String sizeText = android.text.format.Formatter.formatFileSize(resultView.getContext(), size);
    resultView.setText(sizeText);
}

private static long calculateSize(File dir) {
    if (dir == null) return 0;
    if (!dir.isDirectory()) return dir.length();
    long result = 0;
    File[] children = dir.listFiles();
    if (children != null)
        for (File child : children)
            result += calculateSize(child);
    return result;
}
}

6、指定资源的优先加载顺序:

    //优先加载
    Glide
        .with(context)
        .load(heroImageUrl)
        .priority(Priority.HIGH)
        .into(imageViewHero);
    //后加载
    Glide
        .with(context)
        .load(itemImageUrl)
        .priority(Priority.LOW)
        .into(imageViewItem);

7、先显示缩略图,再显示原图:

//用原图的1/10作为缩略图
Glide
    .with(this)
    .load("http://inthecheesefactory.com/uploads/source/nestedfragment/fragments.png")
    .thumbnail(0.1f)
    .into(iv_0);
//用其它图片作为缩略图
DrawableRequestBuilder thumbnailRequest = Glide
    .with(this)
    .load(R.drawable.news);
Glide.with(this)
    .load("http://inthecheesefactory.com/uploads/source/nestedfragment/fragments.png")
    .thumbnail(thumbnailRequest)
    .into(iv_0);

8、bitmapTransform使用,可对图片裁剪、滤镜、灰度等等

(使用时只需使用transform()或bitmapTransform()方法即可)

 //圆形裁剪
    Glide.with(this)
        .load("http://inthecheesefactory.com/uploads/source/nestedfragment/fragments.png")
        .bitmapTransform(new CropCircleTransformation(this))
        .into(iv_0);
    //圆角处理
    Glide.with(this)
        .load("http://inthecheesefactory.com/uploads/source/nestedfragment/fragments.png")
        .bitmapTransform(new RoundedCornersTransformation(this,30,0, RoundedCornersTransformation.CornerType.ALL))
        .into(iv_0);
    //灰度处理
    Glide.with(this)
        .load("http://inthecheesefactory.com/uploads/source/nestedfragment/fragments.png")
        .bitmapTransform(new GrayscaleTransformation(this))
        .into(iv_0);

图片处理库GitHub:https://github.com/wasabeef/glide-transformations

图片处理库

使用步骤:

Gradle

repositories {
    jcenter()
}

dependencies {
    compile 'jp.wasabeef:glide-transformations:2.0.2'
    // If you want to use the GPU Filters
    compile 'jp.co.cyberagent.android.gpuimage:gpuimage-library:1.4.1'
}

Glide中使用(如高斯模糊)

Glide.with(this).load(R.drawable.demo)
        .bitmapTransform(new BlurTransformation(context))
        .into((ImageView) findViewById(R.id.image));

添加多种滤镜效果

Glide.with(this).load(R.drawable.demo)
  .bitmapTransform(new BlurTransformation(context, 25), new CropCircleTransformation(context))
  .into((ImageView) findViewById(R.id.image));

二、自定义工具类介绍

自定义的工具类,是基于Glide的使用之上的

  • (1)ImageView设置图片(加载错误图片)
  • (2)ImageView设置图片---BitMap(不设置默认图)
  • (3)设置RelativeLayout的图片
  • (4)设置LinearLayout的图片
  • (5)设置FrameLayout的图片
  • (6)高斯模糊------ RelativeLayout设置图片
  • (7)高斯模糊------ LinearLayout设置图片
  • (8)圆角显示图片 ImageView

随便写了几个,可根据需求自定义

使用

  • 布局文件



    

        

            

            

        

        

        

        

    



  • Activity中使用
        //高斯模糊
        ShowImageUtils.showImageViewBlur(this, R.mipmap.ic_launcher, url1, layout);
        //圆角
        ShowImageUtils.showImageViewToCircle(getApplication(), R.mipmap.ic_launcher, url2, cirview);
        //relaytiveLay
        ShowImageUtils.showImageView(this, R.mipmap.ic_launcher, url1, relativelayout);
        //一般图片,支持imageview,layout
        ShowImageUtils.showImageView(this, R.mipmap.ic_launcher, url3, img);
  • 效果图
Glide封装个工具类直接使用_第1张图片
Glide封装个工具类直接使用_第2张图片

自定义工具类ShowImageUtils

package com.app.nohttpdemo.utils.img;

import android.annotation.SuppressLint;
import android.app.Application;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.view.View;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;

import com.bumptech.glide.Glide;
import com.bumptech.glide.load.engine.DiskCacheStrategy;
import com.bumptech.glide.request.animation.GlideAnimation;
import com.bumptech.glide.request.target.SimpleTarget;

/**
 * 网络图片的工具类
 * 

* (1)ImageView设置图片(错误图片) * (2)ImageView设置图片---BitMap(不设置默认图) * (3)设置RelativeLayout * (4)设置LinearLayout * (5)设置FrameLayout * (6)高斯模糊------ RelativeLayout * (7)高斯模糊------ LinearLayout * (8)圆角显示图片 ImageView * * @author huangshuyuan */ public class ShowImageUtils { /** * (1) * 显示图片Imageview * * @param context 上下文 * @param errorimg 错误的资源图片 * @param url 图片链接 * @param imgeview 组件 */ public static void showImageView(Context context, int errorimg, String url, ImageView imgeview) { Glide.with(context).load(url)// 加载图片 .error(errorimg)// 设置错误图片 .crossFade()// 设置淡入淡出效果,默认300ms,可以传参 .placeholder(errorimg)// 设置占位图 .diskCacheStrategy(DiskCacheStrategy.RESULT)// 缓存修改过的图片 .into(imgeview); // Glide.with(context).load(url).thumbnail(0.1f).error(errorimg) // .into(imgeview); // Glide // .with(context) // .load(UsageExampleListViewAdapter.eatFoodyImages[0]) // .placeholder(R.mipmap.ic_launcher) //设置占位图 // .error(R.mipmap.future_studio_launcher) //设置错误图片 // .crossFade() //设置淡入淡出效果,默认300ms,可以传参 // //.dontAnimate() //不显示动画效果 // .into(imageViewFade); } /** * (2) * 获取到Bitmap---不设置错误图片,错误图片不显示 * * @param context * @param imageView * @param url */ public static void showImageViewGone(Context context, final ImageView imageView, String url) { Glide.with(context).load(url).asBitmap() .diskCacheStrategy(DiskCacheStrategy.RESULT)// 缓存修改过的图片 .into(new SimpleTarget() { @SuppressLint("NewApi") @Override public void onResourceReady(Bitmap loadedImage, GlideAnimation arg1) { imageView.setVisibility(View.VISIBLE); BitmapDrawable bd = new BitmapDrawable(loadedImage); imageView.setImageDrawable(bd); } @Override public void onLoadFailed(Exception e, Drawable errorDrawable) { // TODO Auto-generated method stub super.onLoadFailed(e, errorDrawable); imageView.setVisibility(View.GONE); } }); } /** * (3) * 设置RelativeLayout *

* 获取到Bitmap * * @param context * @param errorimg * @param url * @param bgLayout */ public static void showImageView(Context context, int errorimg, String url, final RelativeLayout bgLayout) { Glide.with(context).load(url).asBitmap().error(errorimg)// 设置错误图片 .diskCacheStrategy(DiskCacheStrategy.RESULT)// 缓存修改过的图片 .placeholder(errorimg)// 设置占位图 .into(new SimpleTarget() { @SuppressLint("NewApi") @Override public void onResourceReady(Bitmap loadedImage, GlideAnimation arg1) { BitmapDrawable bd = new BitmapDrawable(loadedImage); bgLayout.setBackground(bd); } @Override public void onLoadFailed(Exception e, Drawable errorDrawable) { // TODO Auto-generated method stub super.onLoadFailed(e, errorDrawable); bgLayout.setBackgroundDrawable(errorDrawable); } }); } /** * (4) * 设置LinearLayout *

* 获取到Bitmap * * @param context * @param errorimg * @param url * @param bgLayout */ public static void showImageView(Context context, int errorimg, String url, final LinearLayout bgLayout) { Glide.with(context).load(url).asBitmap().error(errorimg)// 设置错误图片 .diskCacheStrategy(DiskCacheStrategy.RESULT)// 缓存修改过的图片 .placeholder(errorimg)// 设置占位图 .into(new SimpleTarget() { @SuppressLint("NewApi") @Override public void onResourceReady(Bitmap loadedImage, GlideAnimation arg1) { BitmapDrawable bd = new BitmapDrawable(loadedImage); bgLayout.setBackground(bd); } @Override public void onLoadFailed(Exception e, Drawable errorDrawable) { // TODO Auto-generated method stub super.onLoadFailed(e, errorDrawable); bgLayout.setBackgroundDrawable(errorDrawable); } }); } /** * (5) * 设置FrameLayout *

* 获取到Bitmap * * @param context * @param errorimg * @param url * @param frameBg */ public static void showImageView(Context context, int errorimg, String url, final FrameLayout frameBg) { Glide.with(context).load(url).asBitmap().error(errorimg)// 设置错误图片 .diskCacheStrategy(DiskCacheStrategy.RESULT)// 缓存修改过的图片 .placeholder(errorimg)// 设置占位图 .into(new SimpleTarget() { @SuppressLint("NewApi") @Override public void onResourceReady(Bitmap loadedImage, GlideAnimation arg1) { BitmapDrawable bd = new BitmapDrawable(loadedImage); frameBg.setBackground(bd); } @Override public void onLoadFailed(Exception e, Drawable errorDrawable) { // TODO Auto-generated method stub super.onLoadFailed(e, errorDrawable); frameBg.setBackgroundDrawable(errorDrawable); } }); } /** * (6) * 获取到Bitmap 高斯模糊 RelativeLayout * * @param context * @param errorimg * @param url * @param bgLayout */ public static void showImageViewBlur(Context context, int errorimg, String url, final RelativeLayout bgLayout) { Glide.with(context).load(url).asBitmap().error(errorimg) // 设置错误图片 .diskCacheStrategy(DiskCacheStrategy.RESULT) // 缓存修改过的图片 .placeholder(errorimg) .transform(new BlurTransformation(context))// 高斯模糊处理 // 设置占位图 .into(new SimpleTarget() { @SuppressLint("NewApi") @Override public void onResourceReady(Bitmap loadedImage, GlideAnimation arg1) { BitmapDrawable bd = new BitmapDrawable(loadedImage); bgLayout.setBackground(bd); } @Override public void onLoadFailed(Exception e, Drawable errorDrawable) { // TODO Auto-generated method stub super.onLoadFailed(e, errorDrawable); bgLayout.setBackgroundDrawable(errorDrawable); } }); } /** * (7) * 获取到Bitmap 高斯模糊 LinearLayout * * @param context * @param errorimg * @param url * @param bgLayout */ public static void showImageViewBlur(Context context, int errorimg, String url, final LinearLayout bgLayout) { Glide.with(context).load(url).asBitmap().error(errorimg) // 设置错误图片 .diskCacheStrategy(DiskCacheStrategy.RESULT) // 缓存修改过的图片 .placeholder(errorimg) .transform(new BlurTransformation(context))// 高斯模糊处理 // 设置占位图 .into(new SimpleTarget() { @SuppressLint("NewApi") @Override public void onResourceReady(Bitmap loadedImage, GlideAnimation arg1) { BitmapDrawable bd = new BitmapDrawable(loadedImage); bgLayout.setBackground(bd); } @Override public void onLoadFailed(Exception e, Drawable errorDrawable) { // TODO Auto-generated method stub super.onLoadFailed(e, errorDrawable); bgLayout.setBackgroundDrawable(errorDrawable); } }); } /** * (8) * 显示图片 圆角显示 ImageView * * @param context 上下文 * @param errorimg 错误的资源图片 * @param url 图片链接 * @param imgeview 组件 */ public static void showImageViewToCircle(Application context, int errorimg, String url, ImageView imgeview) { Glide.with(context).load(url) // 加载图片 .error(errorimg) // 设置错误图片 .crossFade() // 设置淡入淡出效果,默认300ms,可以传参 .placeholder(errorimg) // 设置占位图 .transform(new GlideCircleTransform(context))//圆角 .diskCacheStrategy(DiskCacheStrategy.RESULT)// 缓存修改过的图片 .into(imgeview); // Glide.with(context).load(url).thumbnail(0.1f).error(errorimg) // .into(imgeview); // Glide // .with(context) // .load(UsageExampleListViewAdapter.eatFoodyImages[0]) // .placeholder(R.mipmap.ic_launcher) //设置占位图 // .error(R.mipmap.future_studio_launcher) //设置错误图片 // .crossFade() //设置淡入淡出效果,默认300ms,可以传参 // //.dontAnimate() //不显示动画效果 // .into(imageViewFade); } }

高斯模糊


import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.os.Build;
import android.renderscript.RSRuntimeException;

import com.bumptech.glide.Glide;
import com.bumptech.glide.load.Transformation;
import com.bumptech.glide.load.engine.Resource;
import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
import com.bumptech.glide.load.resource.bitmap.BitmapResource;

public class BlurTransformation implements Transformation {

    private static int MAX_RADIUS = 25;
    private static int DEFAULT_DOWN_SAMPLING = 1;

    private Context mContext;
    private BitmapPool mBitmapPool;

    private int mRadius;
    private int mSampling;

    public BlurTransformation(Context context) {
        this(context, Glide.get(context).getBitmapPool(), MAX_RADIUS,
                DEFAULT_DOWN_SAMPLING);
    }

    public BlurTransformation(Context context, BitmapPool pool) {
        this(context, pool, MAX_RADIUS, DEFAULT_DOWN_SAMPLING);
    }

    public BlurTransformation(Context context, BitmapPool pool, int radius) {
        this(context, pool, radius, DEFAULT_DOWN_SAMPLING);
    }

    public BlurTransformation(Context context, int radius) {
        this(context, Glide.get(context).getBitmapPool(), radius,
                DEFAULT_DOWN_SAMPLING);
    }

    public BlurTransformation(Context context, BitmapPool pool, int radius,
            int sampling) {
        mContext = context;
        mBitmapPool = pool;
        mRadius = radius;
        mSampling = sampling;
    }

    public BlurTransformation(Context context, int radius, int sampling) {
        mContext = context;
        mBitmapPool = Glide.get(context).getBitmapPool();
        mRadius = radius;
        mSampling = sampling;
    }

    @Override
    public Resource transform(Resource resource, int outWidth,
            int outHeight) {
        Bitmap source = resource.get();

        int width = source.getWidth();
        int height = source.getHeight();
        int scaledWidth = width / mSampling;
        int scaledHeight = height / mSampling;

        Bitmap bitmap = mBitmapPool.get(scaledWidth, scaledHeight,
                Bitmap.Config.ARGB_8888);
        if (bitmap == null) {
            bitmap = Bitmap.createBitmap(scaledWidth, scaledHeight,
                    Bitmap.Config.ARGB_8888);
        }

        Canvas canvas = new Canvas(bitmap);
        canvas.scale(1 / (float) mSampling, 1 / (float) mSampling);
        Paint paint = new Paint();
        paint.setFlags(Paint.FILTER_BITMAP_FLAG);
        canvas.drawBitmap(source, 0, 0, paint);

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
            try {
                bitmap = RSBlur.blur(mContext, bitmap, mRadius);
            } catch (RSRuntimeException e) {
                bitmap = FastBlur.blur(bitmap, mRadius, true);
            }
        } else {
            bitmap = FastBlur.blur(bitmap, mRadius, true);
        }

        return BitmapResource.obtain(bitmap, mBitmapPool);
    }

    @Override
    public String getId() {
        return "BlurTransformation(radius=" + mRadius + ", sampling="
                + mSampling + ")";
    }
}

import android.graphics.Bitmap;

public class FastBlur {

    public static Bitmap blur(Bitmap sentBitmap, int radius,
            boolean canReuseInBitmap) {

        Bitmap bitmap;
        if (canReuseInBitmap) {
            bitmap = sentBitmap;
        } else {
            bitmap = sentBitmap.copy(sentBitmap.getConfig(), true);
        }

        if (radius < 1) {
            return (null);
        }

        int w = bitmap.getWidth();
        int h = bitmap.getHeight();

        int[] pix = new int[w * h];
        bitmap.getPixels(pix, 0, w, 0, 0, w, h);

        int wm = w - 1;
        int hm = h - 1;
        int wh = w * h;
        int div = radius + radius + 1;

        int r[] = new int[wh];
        int g[] = new int[wh];
        int b[] = new int[wh];
        int rsum, gsum, bsum, x, y, i, p, yp, yi, yw;
        int vmin[] = new int[Math.max(w, h)];

        int divsum = (div + 1) >> 1;
        divsum *= divsum;
        int dv[] = new int[256 * divsum];
        for (i = 0; i < 256 * divsum; i++) {
            dv[i] = (i / divsum);
        }

        yw = yi = 0;

        int[][] stack = new int[div][3];
        int stackpointer;
        int stackstart;
        int[] sir;
        int rbs;
        int r1 = radius + 1;
        int routsum, goutsum, boutsum;
        int rinsum, ginsum, binsum;

        for (y = 0; y < h; y++) {
            rinsum = ginsum = binsum = routsum = goutsum = boutsum = rsum = gsum = bsum = 0;
            for (i = -radius; i <= radius; i++) {
                p = pix[yi + Math.min(wm, Math.max(i, 0))];
                sir = stack[i + radius];
                sir[0] = (p & 0xff0000) >> 16;
                sir[1] = (p & 0x00ff00) >> 8;
                sir[2] = (p & 0x0000ff);
                rbs = r1 - Math.abs(i);
                rsum += sir[0] * rbs;
                gsum += sir[1] * rbs;
                bsum += sir[2] * rbs;
                if (i > 0) {
                    rinsum += sir[0];
                    ginsum += sir[1];
                    binsum += sir[2];
                } else {
                    routsum += sir[0];
                    goutsum += sir[1];
                    boutsum += sir[2];
                }
            }
            stackpointer = radius;

            for (x = 0; x < w; x++) {

                r[yi] = dv[rsum];
                g[yi] = dv[gsum];
                b[yi] = dv[bsum];

                rsum -= routsum;
                gsum -= goutsum;
                bsum -= boutsum;

                stackstart = stackpointer - radius + div;
                sir = stack[stackstart % div];

                routsum -= sir[0];
                goutsum -= sir[1];
                boutsum -= sir[2];

                if (y == 0) {
                    vmin[x] = Math.min(x + radius + 1, wm);
                }
                p = pix[yw + vmin[x]];

                sir[0] = (p & 0xff0000) >> 16;
                sir[1] = (p & 0x00ff00) >> 8;
                sir[2] = (p & 0x0000ff);

                rinsum += sir[0];
                ginsum += sir[1];
                binsum += sir[2];

                rsum += rinsum;
                gsum += ginsum;
                bsum += binsum;

                stackpointer = (stackpointer + 1) % div;
                sir = stack[(stackpointer) % div];

                routsum += sir[0];
                goutsum += sir[1];
                boutsum += sir[2];

                rinsum -= sir[0];
                ginsum -= sir[1];
                binsum -= sir[2];

                yi++;
            }
            yw += w;
        }
        for (x = 0; x < w; x++) {
            rinsum = ginsum = binsum = routsum = goutsum = boutsum = rsum = gsum = bsum = 0;
            yp = -radius * w;
            for (i = -radius; i <= radius; i++) {
                yi = Math.max(0, yp) + x;

                sir = stack[i + radius];

                sir[0] = r[yi];
                sir[1] = g[yi];
                sir[2] = b[yi];

                rbs = r1 - Math.abs(i);

                rsum += r[yi] * rbs;
                gsum += g[yi] * rbs;
                bsum += b[yi] * rbs;

                if (i > 0) {
                    rinsum += sir[0];
                    ginsum += sir[1];
                    binsum += sir[2];
                } else {
                    routsum += sir[0];
                    goutsum += sir[1];
                    boutsum += sir[2];
                }

                if (i < hm) {
                    yp += w;
                }
            }
            yi = x;
            stackpointer = radius;
            for (y = 0; y < h; y++) {
                // Preserve alpha channel: ( 0xff000000 & pix[yi] )
                pix[yi] = (0xff000000 & pix[yi]) | (dv[rsum] << 16)
                        | (dv[gsum] << 8) | dv[bsum];

                rsum -= routsum;
                gsum -= goutsum;
                bsum -= boutsum;

                stackstart = stackpointer - radius + div;
                sir = stack[stackstart % div];

                routsum -= sir[0];
                goutsum -= sir[1];
                boutsum -= sir[2];

                if (x == 0) {
                    vmin[y] = Math.min(y + r1, hm) * w;
                }
                p = x + vmin[y];

                sir[0] = r[p];
                sir[1] = g[p];
                sir[2] = b[p];

                rinsum += sir[0];
                ginsum += sir[1];
                binsum += sir[2];

                rsum += rinsum;
                gsum += ginsum;
                bsum += binsum;

                stackpointer = (stackpointer + 1) % div;
                sir = stack[stackpointer];

                routsum += sir[0];
                goutsum += sir[1];
                boutsum += sir[2];

                rinsum -= sir[0];
                ginsum -= sir[1];
                binsum -= sir[2];

                yi += w;
            }
        }

        bitmap.setPixels(pix, 0, w, 0, 0, w, h);

        return (bitmap);
    }
}


import android.annotation.TargetApi;
import android.content.Context;
import android.graphics.Bitmap;
import android.os.Build;
import android.renderscript.Allocation;
import android.renderscript.Element;
import android.renderscript.RSRuntimeException;
import android.renderscript.RenderScript;
import android.renderscript.ScriptIntrinsicBlur;

public class RSBlur {
    @TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
    public static Bitmap blur(Context context, Bitmap blurredBitmap, int radius)
            throws RSRuntimeException {
        try {
            RenderScript rs = RenderScript.create(context);
            Allocation input = Allocation.createFromBitmap(rs, blurredBitmap,
                    Allocation.MipmapControl.MIPMAP_NONE,
                    Allocation.USAGE_SCRIPT);
            Allocation output = Allocation.createTyped(rs, input.getType());
            ScriptIntrinsicBlur blur = ScriptIntrinsicBlur.create(rs,
                    Element.U8_4(rs));

            blur.setInput(input);
            blur.setRadius(radius);
            blur.forEach(output);
            output.copyTo(blurredBitmap);
            rs.destroy();
        } catch (RSRuntimeException e) {
            blurredBitmap = FastBlur.blur(blurredBitmap, radius, true);
        }
        return blurredBitmap;
    }
}

圆角

直接实现Transformation接口,进行更灵活的图片处理,如进行简单地圆角处理


import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Paint;

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

/**
 * 圆角Glide
 *
 * @author Administrator
 */
public class GlideCircleTransform extends BitmapTransformation {
    public GlideCircleTransform(Context context) {
        super(context);
    }

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

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

        int size = Math.min(source.getWidth(), source.getHeight());
        int x = (source.getWidth() - size) / 2;
        int y = (source.getHeight() - size) / 2;

        // TODO this could be acquired from the pool too
        Bitmap squared = Bitmap.createBitmap(source, x, y, size, size);

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

        Canvas canvas = new Canvas(result);
        Paint paint = new Paint();
        paint.setShader(new BitmapShader(squared, BitmapShader.TileMode.CLAMP,
                BitmapShader.TileMode.CLAMP));
        paint.setAntiAlias(true);
        float r = size / 2f;
        canvas.drawCircle(r, r, r, paint);
        return result;
    }

    @Override
    public String getId() {
        return getClass().getName();
    }

我的博客:http://blog.csdn.net/Imshuyuan/article/details/67637643

参考文章:
Glide使用详解(一)
Glide开发文档
Glide详解

我的Demo已上传,GitHub 上Demo地址

https://github.com/huangshuyuan/GlideUtilsDemo

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