Palette的集成与使用

1、在build.gradle中添加依赖

    implementation 'com.github.bumptech.glide:glide:4.13.0'
    annotationProcessor 'com.github.bumptech.glide:compiler:4.13.0'

    implementation 'androidx.palette:palette:1.0.0'

2、添加网络权限

3、通过glide加载图片，并在图片加载成功的回调里，添加通过palette设置颜色的代码

 Palette.from(resource!!.toBitmap())
                            .generate {
                                palette ->
                                palette?.let {
                                    val inColor = it.vibrantSwatch?.rgb?:0
                                    clMain.setBackgroundColor(inColor)
                                }
                            }

        Glide.with(this)
            .load("https://gimg2.baidu.com/image_search/src=https://www.mshxw.com/skin/sinaskin/image/nopic.gif")
                .listener(object : RequestListener{
                    override fun onLoadFailed(
                        e: GlideException?,
                        model: Any?,
                        target: Target?,
                        isFirstResource: Boolean
                    ): Boolean {
                        Log.e("TAG","Error loading image",e)
                        return false
                    }

                    override fun onResourceReady(
                        resource: Drawable?,
                        model: Any?,
                        target: Target?,
                        dataSource: DataSource?,
                        isFirstResource: Boolean
                    ): Boolean {

                        Palette.from(resource!!.toBitmap())
                            .generate {
                                palette ->
                                palette?.let {
                                    val inColor = it.vibrantSwatch?.rgb?:0
                                    clMain.setBackgroundColor(inColor)
                                }
                            }
                        return false
                    }

                })
            .into(imageMain)

运行结果：

背景色随着加载图片的不同而不同

注：

manifest文件：

buil.gradle文件：

plugins {
    id 'com.android.application'
    id 'org.jetbrains.kotlin.android'
}

android {
    compileSdk 32

    defaultConfig {
        applicationId "com.example.mypallet"
        minSdk 21
        targetSdk 32
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
    kotlinOptions {
        jvmTarget = '1.8'
    }
}

dependencies {

    implementation 'androidx.core:core-ktx:1.7.0'
    implementation 'androidx.appcompat:appcompat:1.4.1'
    implementation 'com.google.android.material:material:1.6.0'
    implementation 'androidx.constraintlayout:constraintlayout:2.1.3'
    testImplementation 'junit:junit:4.13.2'

    implementation 'com.github.bumptech.glide:glide:4.13.0'
    annotationProcessor 'com.github.bumptech.glide:compiler:4.13.0'

    implementation 'androidx.palette:palette:1.0.0'

    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
}

MainActivity:

package com.example.mypallet

import android.graphics.drawable.Drawable
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.util.Log
import android.widget.ImageView
import androidx.constraintlayout.widget.ConstraintLayout
import androidx.core.graphics.drawable.toBitmap
import androidx.palette.graphics.Palette
import com.bumptech.glide.Glide
import com.bumptech.glide.load.DataSource
import com.bumptech.glide.load.engine.GlideException
import com.bumptech.glide.request.RequestListener
import com.bumptech.glide.request.target.Target


class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        val clMain = findViewById(R.id.cl_main)
        val imageMain = findViewById(R.id.iv_main)

        Glide.with(this)
            .load("https://gimg2.baidu.com/image_search/src=https://www.mshxw.com/skin/sinaskin/image/nopic.gif")
                .listener(object : RequestListener{
                    override fun onLoadFailed(
                        e: GlideException?,
                        model: Any?,
                        target: Target?,
                        isFirstResource: Boolean
                    ): Boolean {
                        Log.e("TAG","Error loading image",e)
                        return false
                    }

                    override fun onResourceReady(
                        resource: Drawable?,
                        model: Any?,
                        target: Target?,
                        dataSource: DataSource?,
                        isFirstResource: Boolean
                    ): Boolean {

                        Palette.from(resource!!.toBitmap())
                            .generate {
                                palette ->
                                palette?.let {
                                    val inColor = it.vibrantSwatch?.rgb?:0
                                    clMain.setBackgroundColor(inColor)
                                }
                            }
                        return false
                    }

                })
            .into(imageMain)

    }
}

布局文件：