播放网络视频首先需要添加网络权限，如果是http的链接需要添加明文访问权限

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

xml下添加network_security_config.xml

<?xml version="1.0" encoding="utf-8"?>
<network-security-config>
    <!--允许访问http协议-->
    <base-config cleartextTrafficPermitted="true" />
</network-security-config>

AndroidManifest.xml中的application中引用

 android:networkSecurityConfig="@xml/network_security_config"

布局

<?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"
    android:background="@color/colorBlack"
    android:gravity="center"
    android:orientation="vertical">

    <VideoView
        android:id="@+id/vv"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
</LinearLayout>

代码

public class VideoPalyActivity extends AppCompatActivity {

    private ActivityVideoPalyBinding binding;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        binding = ActivityVideoPalyBinding.inflate(getLayoutInflater());
        setContentView(binding.getRoot());

        initView();
        initData();
    }

    private void initView() {
        YUtils.showLoading("正在加载，请稍等...");

        String url = "http://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4";
        binding.vv.setVideoURI(Uri.parse(url));
        MediaController mediaController = new MediaController(this);
        binding.vv.setMediaController(mediaController);
        binding.vv.start();
    }

    private void initData() {
        //加载成功回调
        binding.vv.setOnPreparedListener(mp -> YUtils.hideLoading());
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        //停止播放并关闭资源
        binding.vv.stopPlayback();
    }
}