android高斯模糊填充imageview背景

说明：最近碰到一个需求，安卓app显示在线的url图片，然后imageview没占满的部分，使用该图片的模糊背景填充

效果图：

step1:~\app\build.gradle

    implementation 'com.github.bumptech.glide:glide:3.7.0'implementation 'jp.wasabeef:glide-transformations:2.0.1'

step2:~\app\src\main\AndroidManifest.xml

    <uses-permission android:name="android.permission.INTERNET" />

step3:~\app\src\main\res\layout\activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:background="@android:color/holo_green_dark"><ImageViewandroid:id="@+id/iv_bg"android:layout_width="match_parent"android:layout_height="match_parent"android:scaleType="centerCrop"android:src="@mipmap/ic_launcher" /><RelativeLayoutandroid:layout_width="match_parent"android:layout_height="match_parent"><ImageViewandroid:id="@+id/iv_test"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_centerInParent="true"android:src="@mipmap/ic_launcher"android:visibility="visible" /></RelativeLayout></FrameLayout>

step4:~\app\src\main\java\com\example\iosdialogdemo\MainActivity.java

package com.example.iosdialogdemo;import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageView;
import android.widget.Toast;import androidx.appcompat.app.AppCompatActivity;import com.bumptech.glide.Glide;import jp.wasabeef.glide.transformations.BlurTransformation;public class MainActivity extends AppCompatActivity {private String url = "http://img.netbian.com/file/2024/0517/small150904ck1C21715929744.jpg";private String url2 = "http://img.netbian.com/file/2024/0517/small151245krBn01715929965.jpg";private String url3 =  "http://img.netbian.com/file/2024/0519/small190753XKtgH1716116873.jpg";@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);Glide.with(this).load(url).bitmapTransform(new BlurTransformation(this)).into((ImageView) findViewById(R.id.iv_bg));Glide.with(this).load(url).into((ImageView) findViewById(R.id.iv_test));}
}

end