使用Glide實現高斯模糊效果，供大家參考，具體內容如下

先來看效果

第一步：引入依賴

implementation 'com.github.bumptech.glide:glide:4.7.1'
implementation 'jp.wasabeef:glide-transformations:2.0.1'

第二步：自定義繼承自BitmapTransformation的類

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 androidx.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;


/**
 * 虛化Transformation
 * 更多效果參考：https://github.com/wasabeef/glide-transformations
 */

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,BitmapPool pool,int radius) {
    this(context,radius,int radius,int sampling) {
    this(context,sampling);
  }

  public BlurTransformation(Context context,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,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,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,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);
  }

}

第三步：實際使用

String url="url";
 Glide.with(this).load(url)
 .apply(RequestOptions.bitmapTransform(new BlurTransformation(this,25,3)))
        .into(img);
 //引數用來設定模糊程度

以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支援我們。