简单化封装一个MPlayerView的界面。考虑到比较轻量级，SDK里面的PlayerView源码比较多，不需要用到控制台等的操作，这里只提取界面布局。
依赖
implementation "androidx.media3:media3-exoplayer:1.2.0"
implementation "androidx.media3:media3-ui:1.2.0"
默认使用TextureView
surfaceView = TextureView(context)
surfaceView.layoutParams = ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT)
surfaceView.isClickable = false
contentFrame.addView(surfaceView, 0)
1：纵横比的布局工具 AspectRatioFrameLayout
private var contentFrame: AspectRatioFrameLayout
contentFrame = AspectRatioFrameLayout(context)
contentFrame.layoutParams = LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT).apply {
this.gravity = Gravity.CENTER
}
addView(contentFrame, 0)
//这里设置一个比例模式
//currentResizeMode = AspectRatioFrameLayout.RESIZE_MODE_FIT
contentFrame.resizeMode = currentResizeMode
写个方法：根据视频大小更新纵横比
private fun updateAspectRatio() {
val videoSize = mPlayer?.videoSize ?: VideoSize.UNKNOWN
val width = videoSize.width
val height = videoSize.height
val unAppliedRotationDegrees = videoSize.unappliedRotationDegrees
var videoAspectRatio: Float = if ((height == 0 || width == 0)) 0f else (width * videoSize.pixelWidthHeightRatio) / height
if (surfaceView is TextureView) {
// Try to apply rotation transformation when our surface is a TextureView.
if (videoAspectRatio > 0 && (unAppliedRotationDegrees == 90 || unAppliedRotationDegrees == 270)) {
// We will apply a rotation 90/270 degree to the output texture of the TextureView.
// In this case, the output video's width and height will be swapped.
videoAspectRatio = 1 / videoAspectRatio
}
if (textureViewRotation != 0) {
surfaceView.removeOnLayoutChangeListener(componentListener)
}
textureViewRotation = unAppliedRotationDegrees
if (textureViewRotation != 0) {
// The texture view's dimensions might be changed after layout step.
// So add an OnLayoutChangeListener to apply rotation after layout step.
surfaceView.addOnLayoutChangeListener(componentListener)
}
applyTextureViewRotation(surfaceView as TextureView, textureViewRotation)
}
val aspectRatio = videoAspectRatio
contentFrame.setAspectRatio(aspectRatio)
}
2：定义一个方法处理视频旋转缩放问题
private fun applyTextureViewRotation(textureView: TextureView, textureViewRotation: Int) {
val transformMatrix = Matrix()
val textureViewWidth = textureView.width.toFloat()
val textureViewHeight = textureView.height.toFloat()
if (textureViewWidth != 0f && textureViewHeight != 0f && textureViewRotation != 0) {
val pivotX = textureViewWidth / 2
val pivotY = textureViewHeight / 2
transformMatrix.postRotate(textureViewRotation.toFloat(), pivotX, pivotY)
// After rotation, scale the rotated texture to fit the TextureView size.
val originalTextureRect = RectF(0f, 0f, textureViewWidth, textureViewHeight)
val rotatedTextureRect = RectF()
transformMatrix.mapRect(rotatedTextureRect, originalTextureRect)
transformMatrix.postScale(
textureViewWidth / rotatedTextureRect.width(), textureViewHeight / rotatedTextureRect.height(), pivotX, pivotY
)
}
textureView.setTransform(transformMatrix)
}
3：应用video与view变化处理
private val componentListener = object : ComponentListener() {
}
open inner class ComponentListener : Player.Listener, OnLayoutChangeListener {
override fun onLayoutChange(
view: View?, left: Int, top: Int, right: Int, bottom: Int, oldLeft: Int, oldTop: Int, oldRight: Int, oldBottom: Int
) {
(view as? TextureView)?.let {
applyTextureViewRotation(it, textureViewRotation)
}
}
override fun onVideoSizeChanged(videoSize: VideoSize) {
if (videoSize == VideoSize.UNKNOWN || mPlayer == null || mPlayer?.playbackState == Player.STATE_IDLE) {
return
}
updateAspectRatio()
}
}
4：最后设置播放方法
fun setPlayer(player: Player) {
if (mPlayer == player) {
return
}
mPlayer?.let { oldPlayer ->
oldPlayer.removeListener(componentListener)
if (oldPlayer.isCommandAvailable(COMMAND_SET_VIDEO_SURFACE)) {
oldPlayer.clearVideoTextureView(surfaceView as? TextureView)
}
}
mPlayer = player
if (player.isCommandAvailable(COMMAND_SET_VIDEO_SURFACE)) {
player.setVideoTextureView(surfaceView as? TextureView)
}
if (!player.isCommandAvailable(COMMAND_GET_TRACKS) || player.currentTracks.isTypeSupported(C.TRACK_TYPE_VIDEO)) {
updateAspectRatio()
}
player.addListener(componentListener)
}
简单使用
private var player: ExoPlayer? = null
player = ExoPlayer.Builder(binding.playerView.context).build()
player?.let {
it.repeatMode = Player.REPEAT_MODE_ONE
binding.playerView.setPlayer(it)
}
player?.setMediaItem(MediaItem.fromUri("url"))
player?.prepare()
player?.play()
最后附上MPlayerView的源码
import android.annotation.SuppressLint
import android.content.Context
import android.graphics.Matrix
import android.graphics.RectF
import android.util.AttributeSet
import android.view.Gravity
import android.view.TextureView
import android.view.View
import android.view.ViewGroup
import android.widget.FrameLayout
import androidx.media3.common.C
import androidx.media3.common.Player
import androidx.media3.common.Player.COMMAND_GET_TRACKS
import androidx.media3.common.Player.COMMAND_SET_VIDEO_SURFACE
import androidx.media3.common.VideoSize
import androidx.media3.ui.AspectRatioFrameLayout
import androidx.media3.ui.AspectRatioFrameLayout.ResizeMode
@SuppressLint("UnsafeOptInUsageError")
class MPlayerView @JvmOverloads constructor(
context: Context, attrs: AttributeSet? = null
) : FrameLayout(context, attrs) {
private var contentFrame: AspectRatioFrameLayout
private var currentResizeMode = AspectRatioFrameLayout.RESIZE_MODE_FIT
private var surfaceView: View
private var mPlayer: Player? = null
private var textureViewRotation = 0
init {
contentFrame = AspectRatioFrameLayout(context)
contentFrame.layoutParams = LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT).apply {
this.gravity = Gravity.CENTER
}
addView(contentFrame, 0)
contentFrame.resizeMode = currentResizeMode
//默认是textureView
surfaceView = TextureView(context)
surfaceView.layoutParams = ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT)
surfaceView.isClickable = false
contentFrame.addView(surfaceView, 0)
}
fun setResizeMode(resizeMode: @ResizeMode Int) {
contentFrame.resizeMode = resizeMode
}
fun setPlayer(player: Player) {
if (mPlayer == player) {
return
}
mPlayer?.let { oldPlayer ->
oldPlayer.removeListener(componentListener)
if (oldPlayer.isCommandAvailable(COMMAND_SET_VIDEO_SURFACE)) {
oldPlayer.clearVideoTextureView(surfaceView as? TextureView)
}
}
mPlayer = player
if (player.isCommandAvailable(COMMAND_SET_VIDEO_SURFACE)) {
player.setVideoTextureView(surfaceView as? TextureView)
}
if (!player.isCommandAvailable(COMMAND_GET_TRACKS) || player.currentTracks.isTypeSupported(C.TRACK_TYPE_VIDEO)) {
updateAspectRatio()
}
player.addListener(componentListener)
}
private fun updateAspectRatio() {
val videoSize = mPlayer?.videoSize ?: VideoSize.UNKNOWN
val width = videoSize.width
val height = videoSize.height
val unAppliedRotationDegrees = videoSize.unappliedRotationDegrees
var videoAspectRatio: Float = if ((height == 0 || width == 0)) 0f else (width * videoSize.pixelWidthHeightRatio) / height
if (surfaceView is TextureView) {
// Try to apply rotation transformation when our surface is a TextureView.
if (videoAspectRatio > 0 && (unAppliedRotationDegrees == 90 || unAppliedRotationDegrees == 270)) {
// We will apply a rotation 90/270 degree to the output texture of the TextureView.
// In this case, the output video's width and height will be swapped.
videoAspectRatio = 1 / videoAspectRatio
}
if (textureViewRotation != 0) {
surfaceView.removeOnLayoutChangeListener(componentListener)
}
textureViewRotation = unAppliedRotationDegrees
if (textureViewRotation != 0) {
// The texture view's dimensions might be changed after layout step.
// So add an OnLayoutChangeListener to apply rotation after layout step.
surfaceView.addOnLayoutChangeListener(componentListener)
}
applyTextureViewRotation(surfaceView as TextureView, textureViewRotation)
}
val aspectRatio = videoAspectRatio
contentFrame.setAspectRatio(aspectRatio)
}
private val componentListener = object : ComponentListener() {
}
open inner class ComponentListener : Player.Listener, OnLayoutChangeListener {
override fun onLayoutChange(
view: View?, left: Int, top: Int, right: Int, bottom: Int, oldLeft: Int, oldTop: Int, oldRight: Int, oldBottom: Int
) {
(view as? TextureView)?.let {
applyTextureViewRotation(it, textureViewRotation)
}
}
override fun onVideoSizeChanged(videoSize: VideoSize) {
if (videoSize == VideoSize.UNKNOWN || mPlayer == null || mPlayer?.playbackState == Player.STATE_IDLE) {
return
}
updateAspectRatio()
}
}
private fun applyTextureViewRotation(textureView: TextureView, textureViewRotation: Int) {
val transformMatrix = Matrix()
val textureViewWidth = textureView.width.toFloat()
val textureViewHeight = textureView.height.toFloat()
if (textureViewWidth != 0f && textureViewHeight != 0f && textureViewRotation != 0) {
val pivotX = textureViewWidth / 2
val pivotY = textureViewHeight / 2
transformMatrix.postRotate(textureViewRotation.toFloat(), pivotX, pivotY)
// After rotation, scale the rotated texture to fit the TextureView size.
val originalTextureRect = RectF(0f, 0f, textureViewWidth, textureViewHeight)
val rotatedTextureRect = RectF()
transformMatrix.mapRect(rotatedTextureRect, originalTextureRect)
transformMatrix.postScale(
textureViewWidth / rotatedTextureRect.width(), textureViewHeight / rotatedTextureRect.height(), pivotX, pivotY
)
}
textureView.setTransform(transformMatrix)
}
}
