视频播放 (一) VideoView的使用

1. 配置参数

  1.1 AndroidManifest.xml 文件添加网络权限

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

  1.2 http 明文请求设置

  android:usesCleartextTraffic="true"

  1.3 activity 配置屏幕变化，不重新加载 Activity

        //屏幕方向发生变更 - 用户旋转设备/屏幕布局发生变更/当前屏幕尺寸发生变更
        <activity
            android:name=".MainActivity"
            android:configChanges="orientation|screenLayout|screenSize"
            android:exported="true">

  1.4 开启协程引用库

implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.6.0-alpha03'

  1.5.视频渲染 Surface View 或者 Texture View

2. 布局文件 activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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">

    <VideoView
        android:id="@+id/videoView"
        android:layout_width="2000dp"
        android:layout_height="0dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <ProgressBar
        android:id="@+id/progressBar"
        style="?android:attr/progressBarStyleHorizontal"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent" />

    <ProgressBar
        android:id="@+id/progressBar2"
        style="?android:attr/progressBarStyle"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>

3. 使用 VideoView, MainActivity.kt

class MainActivity : AppCompatActivity() {
    private lateinit var videoView: VideoView
    private var savePosition: Int = 0
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        // 26.51
        val progressBar = findViewById<ProgressBar>(R.id.progressBar)
        val progressBar2 = findViewById<ProgressBar>(R.id.progressBar2)
        //val videoPath = "android.resource://$packageName/${R.raw.red}"
       val videoPath = "https://media.w3.org/2010/05/sintel/trailer.mp4"
        videoView = findViewById(R.id.videoView)
        videoView.setVideoPath(videoPath)
        //设置导航控制布局
        videoView.setMediaController(MediaController(this))
        videoView.setOnPreparedListener {
            //Log.i("MyTag", "$it")
            //it.seekTo(3000)
            //duration 视频总的长度
            progressBar2.visibility = INVISIBLE
            progressBar.max = it.duration
            it.isLooping = true//循环播放
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                it.playbackParams = PlaybackParams().apply {
                    speed = 1f //倍数播放
                    // pitch = 0.7f //变声，提高音调 尖锐，减少低沉
                }
            }
            it.seekTo(savePosition)
            //it.start()
        }

        lifecycleScope.launch {
            while (true) {
                if (videoView.isPlaying) {
                    progressBar.progress = videoView.currentPosition
                }
                delay(500)
            }
        }
        //videoView.start()
    }

    override fun onPause() {
        super.onPause()
        savePosition = videoView.currentPosition
    }
}

4. 效果图