添加依赖

dependencies {
    api 'com.yanzhenjie:permission:2.0.3'
    api 'com.tencent.tbs.tbssdk:sdk:43939' // 腾讯X5WebView

    implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
    implementation 'androidx.core:core-ktx:1.2.0'
    implementation 'androidx.appcompat:appcompat:1.1.0'
    implementation 'com.google.android.material:material:1.1.0'
    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
    testImplementation 'junit:junit:4.+'
    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
}

在注册清单中添加service

        <service
            android:name="com.tencent.smtt.export.external.DexClassLoaderProviderService"
            android:label="dexopt"
            android:process=":dexopt" >
        </service>

在application中初始化

import android.app.Application;

import com.tencent.smtt.export.external.TbsCoreSettings;
import com.tencent.smtt.sdk.QbSdk;

import java.util.HashMap;

public class BaseApplication extends Application {
    @Override
    public void onCreate() {
        super.onCreate();
        initX5WebView();
    }

    /**
     * 初始化x5WebView
     */
    private void initX5WebView() {
        // 搜集本地tbs内核信息并上报服务器，服务器返回结果决定使用哪个内核。
        QbSdk.PreInitCallback cb = new QbSdk.PreInitCallback() {
            @Override
            public void onViewInitFinished(boolean arg0) {
                // x5內核初始化完成的回调，为true表示x5内核加载成功，否则表示x5内核加载失败，会自动切换到系统内核。
                LogUtils.d("onViewInitFinished is "+arg0);
            }

            @Override
            public void onCoreInitFinished() {
            }
        };
        // x5内核初始化接口
        QbSdk.initX5Environment(this, cb);

        // 在调用TBS初始化、创建WebView之前进行如下配置
        HashMap map = new HashMap();
        map.put(TbsCoreSettings.TBS_SETTINGS_USE_SPEEDY_CLASSLOADER, true);
        map.put(TbsCoreSettings.TBS_SETTINGS_USE_DEXLOADER_SERVICE, true);
        QbSdk.initTbsSettings(map);
    }
}

在activity中基础使用

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import com.tencent.smtt.sdk.QbSdk
import com.tencent.smtt.sdk.WebChromeClient
import com.tencent.smtt.sdk.WebView
import com.yanzhenjie.permission.AndPermission
import com.yanzhenjie.permission.runtime.Permission
import kotlinx.android.synthetic.main.activity_main.*

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

        AndPermission.with(this)
            .runtime()
            .permission(Permission.WRITE_EXTERNAL_STORAGE, Permission.READ_PHONE_STATE)
            .onGranted { }
            .onDenied { }
            .start()

        // 加载进度
        forum_context.webChromeClient = object : WebChromeClient() {
            override fun onProgressChanged(p0: WebView?, p1: Int) {
                super.onProgressChanged(p0, p1)
                LogUtils.d(p1)
            }
        }
        forum_context.settings.javaScriptEnabled = true // 开启js
        forum_context.settingsExtension.setDisplayCutoutEnable(true) // 刘海屏适配
        forum_context.loadUrl("https://www.baidu.com") // 加载url
    }

    override fun onDestroy() {
        QbSdk.clearAllWebViewCache(this, true) // 清除缓存
        super.onDestroy()
    }
}

activity的xml代码

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">


    <com.tencent.smtt.sdk.WebView
        android:id="@+id/forum_context"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" />
</LinearLayout>