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前言：本文只是练习，本文只是练习，本文只是练习！
直播的核心就是推流和拉流，我们就以RTMP的协议来实现下推流和拉流，其他的协议等我学习后再来补充
1.推流
1.1搭建流媒体服务器，具体搭建方法请参照Windows搭建RTMP服务器_rtmp服务器搭建-CSDN博客
一些软件需要搭梯子，如果没法下载的，可以联系下我，我私发，搭建好后，在浏览器里输入http://localhost:9091/stat
出现该界面，说明搭建成功
1.2推流，上面的搭建文章，有OBS推流和ffmpeg推流，这些推流是软件操作和命令行操作，在Andorid客户端不方便，我们这里采用WangShuo1143368701/WSLiveDemo: 音视频，直播SDK，rtmp推流，录制视频，滤镜。百万用户，线上迭代半年，已经稳定。这个库来进行推流
1.2.1首先build.gradle里进行依赖
implementation 'com.github.WangShuo1143368701:WSLiveDemo:v1.7'1.2.2进行ndk配置
defaultConfig {applicationId "com.anssy.videolive"minSdk 24targetSdk 34versionCode 1versionName "1.0"ndk {// 设置支持的SO库架构（开发者可以根据需要，选择一个或多个平台的so）abiFilters "armeabi", "armeabi-v7a", "arm64-v8a", "x86", "arm64-v8a", "x86_64"}testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"}
1.2.3 接下来，就是一些权限的申请，布局的编写，和对应代码的实现了，申请的权限是Camera和Record Audio
这里引入一个常用的权限框架
implementation 'com.github.getActivity:XXPermissions:20.0'具体实现代码：
activity_live_video.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"><me.lake.librestreaming.ws.StreamLiveCameraViewandroid:id="@+id/stream_previewView"android:layout_width="match_parent"android:layout_above="@id/bottom_layout"android:layout_height="match_parent"/><LinearLayoutandroid:layout_width="match_parent"android:orientation="horizontal"android:id="@+id/bottom_layout"android:layout_alignParentBottom="true"android:layout_height="wrap_content"><Buttonandroid:layout_width="0dp"android:text="开始推流"android:id="@+id/btn_startStreaming"android:layout_height="wrap_content"android:layout_weight="1"/><Buttonandroid:layout_width="0dp"android:layout_height="wrap_content"android:layout_weight="1"android:text="停止推流"android:id="@+id/btn_stopStreaming"/><Buttonandroid:layout_width="0dp"android:layout_height="wrap_content"android:layout_weight="1"android:id="@+id/watch_live"android:text="查看直播"/><Buttonandroid:layout_width="0dp"android:layout_height="wrap_content"android:layout_weight="1"android:id="@+id/btn_startRecord"android:text="开始录制"/><Buttonandroid:layout_width="0dp"android:layout_height="wrap_content"android:layout_weight="1"android:id="@+id/btn_stopRecord"android:text="停止录制"/></LinearLayout>
</RelativeLayout>MainActivity.kt 这里有个注意点，就是这个rtmp的地址，自己搞了半天，这个地址是你本地的IP+在niginx里config文件里面配置的端口号，然后后面的程序名称默认是live，也可以是你配置的程序，具体看画红框的部分
package com.anssy.videolive.uiimport android.content.Intent
import android.os.Bundle
import android.view.View
import android.view.View.OnClickListener
import android.widget.Toast
import androidx.appcompat.app.AppCompatActivity
import com.anssy.videolive.R
import com.anssy.videolive.databinding.ActivityLiveVideoBinding
import com.hjq.permissions.OnPermissionCallback
import com.hjq.permissions.Permission
import com.hjq.permissions.XXPermissions
import jp.co.cyberagent.android.gpuimage.GPUImageAddBlendFilter
import me.lake.librestreaming.core.listener.RESConnectionListener
import me.lake.librestreaming.filter.hardvideofilter.BaseHardVideoFilter
import me.lake.librestreaming.filter.hardvideofilter.HardVideoGroupFilter
import me.lake.librestreaming.ws.StreamAVOption
import me.lake.librestreaming.ws.StreamLiveCameraView
import me.lake.librestreaming.ws.filter.hardfilter.GPUImageBeautyFilter
import me.lake.librestreaming.ws.filter.hardfilter.extra.GPUImageCompatibleFilter
import java.util.LinkedList/*** @Description rtmp的直播练习* @Author yulu* @CreateTime 2025年01月21日 09:14:03*/class MainActivity :AppCompatActivity(),RESConnectionListener,OnClickListener{private lateinit var mLiveCameraView: StreamLiveCameraViewprivate lateinit var streamAVOption: StreamAVOptionprivate val rtmpUrl = "rtmp://192.168.0.209:1935/hls/"private lateinit var mMainViewBinding:ActivityLiveVideoBindingoverride fun onCreate(savedInstanceState: Bundle?) {super.onCreate(savedInstanceState)mMainViewBinding = ActivityLiveVideoBinding.inflate(layoutInflater)setContentView(mMainViewBinding.root)initView()requestPermission()}/*** 请求权限*/private fun requestPermission() {val permissionList: MutableList<String> = ArrayList()permissionList.add(Permission.CAMERA)permissionList.add(Permission.RECORD_AUDIO)XXPermissions.with(this).permission(permissionList).request(object : OnPermissionCallback {override fun onGranted(permissions: List<String>, all: Boolean) {if (all) {initConfig()}}override fun onDenied(permissions: List<String>, never: Boolean) {}})}private fun initView(){mLiveCameraView = mMainViewBinding.streamPreviewViewmMainViewBinding.btnStartStreaming.setOnClickListener(this)mMainViewBinding.btnStopStreaming.setOnClickListener(this)mMainViewBinding.btnStartRecord.setOnClickListener(this)mMainViewBinding.btnStopRecord.setOnClickListener(this)mMainViewBinding.watchLive.setOnClickListener(this)}/*** 进行相关配置*/private fun initConfig() {//参数配置 startstreamAVOption = StreamAVOption()streamAVOption.streamUrl = rtmpUrl//参数配置 endmLiveCameraView.init(this, streamAVOption)mLiveCameraView.addStreamStateListener(this)//设置滤镜组val files = LinkedList<BaseHardVideoFilter>()files.add(GPUImageCompatibleFilter(GPUImageBeautyFilter()))files.add(GPUImageCompatibleFilter(GPUImageAddBlendFilter()))mLiveCameraView.setHardVideoFilter(HardVideoGroupFilter(files))}override fun onDestroy() {super.onDestroy()mLiveCameraView.destroy()}override fun onOpenConnectionResult(result: Int) {//result 0成功 1 失败runOnUiThread {Toast.makeText(this,"打开推流连接 状态：$result 推流地址：$rtmpUrl", Toast.LENGTH_LONG).show()}}override fun onWriteError(result: Int) {runOnUiThread {Toast.makeText(this,"推流出错,请尝试重连",Toast.LENGTH_LONG).show()}}override fun onCloseConnectionResult(result: Int) {runOnUiThread {Toast.makeText(this,"关闭推流连接 状态：$result",Toast.LENGTH_LONG).show()}}override fun onClick(v: View) {when(v.id){//开始推流R.id.btn_startStreaming-> {if (!mLiveCameraView.isStreaming) {mLiveCameraView.startStreaming(rtmpUrl)} else {Toast.makeText(this, "未打开", Toast.LENGTH_SHORT).show()}}//结束推流R.id.btn_stopStreaming->{if (mLiveCameraView.isStreaming) {mLiveCameraView.stopStreaming()}}//查看直播R.id.watch_live->{val intent = Intent(this,VideoLiveActivity::class.java)intent.putExtra("url",this.rtmpUrl)startActivity(intent)}//开始录制R.id.btn_startRecord->{if (!mLiveCameraView.isRecord) {mLiveCameraView.startRecord()}}//结束录制R.id.btn_stopRecord->{if (mLiveCameraView.isRecord) {mLiveCameraView.stopRecord()}}}}} 弄完后，就可以推流了，推流成功的效果如下
2.拉流
2.1 VLC播放器播放，在VLC播放器中输入推流的地址
点击媒体->打开网络串流->输入地址
rtmp://192.168.0.209:1935/hls/
2.2使用IJK内核的播放器来播放该地址，这里引入一个第三方库
Doikki/DKVideoPlayer: Android Video Player. 安卓视频播放器，封装MediaPlayer、ExoPlayer、IjkPlayer。模仿抖音并实现预加载，列表播放，悬浮播放，广告播放，弹幕，视频水印，视频滤镜
build.gradle中依赖
implementation 'xyz.doikki.android.dkplayer:dkplayer-java:3.3.7'implementation 'xyz.doikki.android.dkplayer:player-ijk:3.3.7'implementation 'xyz.doikki.android.dkplayer:dkplayer-ui:3.3.7'application中初始化
package com.anssy.videolive.baseimport android.app.Application
import xyz.doikki.videoplayer.ijk.IjkPlayerFactory
import xyz.doikki.videoplayer.player.VideoViewConfig
import xyz.doikki.videoplayer.player.VideoViewManager/*** @Description TODO* @Author yulu* @CreateTime 2025年01月21日 09:44:15*/class BaseApplication : Application() {override fun onCreate() {super.onCreate()VideoViewManager.setConfig(VideoViewConfig.newBuilder().setPlayerFactory(IjkPlayerFactory.create())//使用使用IjkPlayer解码 直播使用.build())}}activity_video_play.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:background="@color/black"android:layout_height="match_parent"><xyz.doikki.videoplayer.player.VideoViewandroid:id="@+id/player"android:layout_centerInParent="true"android:layout_width="match_parent"android:layout_height="match_parent" /><LinearLayoutandroid:layout_width="45dp"android:layout_height="45dp"android:onClick="back"android:id="@+id/back_layout"android:orientation="horizontal"tools:ignore="UsingOnClickInXml"><ImageViewandroid:id="@+id/img_back"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="center"android:contentDescription="@null"android:scaleType="centerInside"android:src="@drawable/back_sting_white" /></LinearLayout>
</RelativeLayout>VideoLiveActivity.kt
package com.anssy.videolive.uiimport android.os.Bundle
import android.view.View
import androidx.appcompat.app.AppCompatActivity
import com.anssy.videolive.databinding.ActivityVideoPlayBinding
import xyz.doikki.videocontroller.StandardVideoController/*** @Description 用于直播播放的控制器* @Author yulu* @CreateTime 2025年01月21日 09:50:41*/class VideoLiveActivity : AppCompatActivity() {private lateinit var mVideoLiveVideoBinding: ActivityVideoPlayBindingoverride fun onCreate(savedInstanceState: Bundle?) {super.onCreate(savedInstanceState)mVideoLiveVideoBinding = ActivityVideoPlayBinding.inflate(layoutInflater)setContentView(mVideoLiveVideoBinding.root)initView()}private fun initView() {mVideoLiveVideoBinding.player.setUrl(if (intent.getStringExtra("url")==null) "rtmp://192.168.0.209:1935/hls/" else intent.getStringExtra("url")) //设置视频地址val controller = StandardVideoController(this)controller.addDefaultControlComponent("", false)mVideoLiveVideoBinding.player.setVideoController(controller) //设置控制器mVideoLiveVideoBinding.player.start() //开始播放，不调用则不自动播放}public fun back(view:View){finish()}override fun onPause() {super.onPause()mVideoLiveVideoBinding.player.pause()}override fun onResume() {super.onResume()mVideoLiveVideoBinding.player.resume()}override fun onDestroy() {super.onDestroy()mVideoLiveVideoBinding.player.release()}override fun onBackPressed() {if (!mVideoLiveVideoBinding.player.onBackPressed()) {super.onBackPressed()}}
}播放效果：
20250121_112120
源码下载地址：rtmp练习，kotlin资源-CSDN文库