java.lang.AbstractMethodError: abstract method "void com

使用Glide4.8加载网络地址实现高斯模糊 首先 导入glide

implementation 'com.github.bumptech.glide:glide:4.7.1'

annotationProcessor 'com.github.bumptech.glide:compiler:4.7.1'

网上查资料发现Glide实现高斯模糊还要引入

implementation 'jp.wasabeef:glide-transformations:2.0.1'

然后在项目中使用 根据根据网上的资料开始使用

GlideApp.with(getActivity()).asBitmap().load(ownerUrl).apply(new RequestOptions().transform(new BlurTransformation(getActivity(),23,4))).into(mIvGaussianBlur);

发现使用的时候报错 java.lang.AbstractMethodError: abstract method "void com.bumptech.glide.load.Key.updateDiskCacheKe

然后百度没找到想要的答案 翻墙搜了一下 找到一个答案

自定义一个BlurTransformation类

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 android.support.annotation.NonNull;

import com.bumptech.glide.Glide;

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

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

import java.nio.charset.Charset;

import java.security.MessageDigest;

import jp.wasabeef.glide.transformations.internal.FastBlur;

import jp.wasabeef.glide.transformations.internal.RSBlur;

/**

* Created by me on 2018-11-4.

*/

public class BlurTransformation extends BitmapTransformation {

private static String STRING_CHARSET_NAME = "UTF-8";

private static final String ID = "com.kevin.glidetest.BlurTransformation";

private static Charset CHARSET = Charset.forName(STRING_CHARSET_NAME);

private static final byte[] ID_BYTES = ID.getBytes(CHARSET);

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, int radius, int sampling) {

this(context, Glide.get(context).getBitmapPool(), radius, sampling);

}

public BlurTransformation(Context context, BitmapPool pool, int radius, int sampling) {

mContext = context.getApplicationContext();

mBitmapPool = pool;

mRadius = radius;

mSampling = sampling;

}

@Override

protected Bitmap transform(@NonNull BitmapPool pool, @NonNull Bitmap toTransform, int

outWidth, int outHeight) {

Bitmap source = toTransform;

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);

return bitmap;

}

@Override

public int hashCode() {

return ID.hashCode();

}

@Override

public boolean equals(Object obj) {

return obj instanceof BlurTransformation;

}

@Override

public void updateDiskCacheKey(MessageDigest messageDigest) {

messageDigest.update(ID_BYTES);

}

}

替换掉原来jp.wasabeef:glide-transformations自带的BlurTransformation类就OK了

大家使用的时候千万注意别导包导错了，用自定义的BlurTransformation类而不要用transformation库自带的

希望能给大家一点帮助，少踩一点坑

另外 使用Glide实现圆形图片效果 into()方法里面都是ImageView

另附效果图: