Android开发视频预览效果

视频播放不是一个简单的事情，得有暂停，继续播放等功能，屏幕的适配也是头疼的事情

一、思路：

引用的是腾讯播放器TXVodPlayer

二、效果图：

图片不是很直观，也可以看下视频

三、关键代码：

public class ActiveVideoPreviewDialog extends AbsDialogFragment implements View.OnClickListener, ITXLivePlayListener {public static final String VIDEO_PATH = "videoPath";private TXCloudVideoView mTXCloudVideoView;private TXVodPlayer mPlayer;private String mVideoPath;private ObjectAnimator mPlayBtnAnimator;//暂停按钮的动画private View mPlayBtn;private boolean mPlayStarted;//播放是否开始了private boolean mPaused;//生命周期暂停private boolean mClickPaused;//点击暂停
//    private boolean mVideoFileFromRecord;private ActionListener mActionListener;@Overrideprotected int getLayoutId() {return R.layout.dialog_active_video_preview;}@Overrideprotected int getDialogStyle() {return R.style.dialog2;}@Overrideprotected boolean canCancel() {return true;}@Overrideprotected void setWindowAttributes(Window window) {WindowManager.LayoutParams params = window.getAttributes();params.width = WindowManager.LayoutParams.MATCH_PARENT;params.height = WindowManager.LayoutParams.MATCH_PARENT;window.setAttributes(params);}@Overridepublic void onActivityCreated(Bundle savedInstanceState) {super.onActivityCreated(savedInstanceState);findViewById(R.id.btn_close).setOnClickListener(this);findViewById(R.id.video_container).setOnClickListener(this);mPlayBtn = findViewById(R.id.btn_play);//暂停按钮动画mPlayBtnAnimator = ObjectAnimator.ofPropertyValuesHolder(mPlayBtn,PropertyValuesHolder.ofFloat("scaleX", 4f, 0.8f, 1f),PropertyValuesHolder.ofFloat("scaleY", 4f, 0.8f, 1f),PropertyValuesHolder.ofFloat("alpha", 0f, 1f));mPlayBtnAnimator.setDuration(150);mPlayBtnAnimator.setInterpolator(new AccelerateInterpolator());mTXCloudVideoView = findViewById(R.id.video_view);mPlayer = new TXVodPlayer(mContext);mPlayer.setConfig(new TXVodPlayConfig());mPlayer.setPlayerView(mTXCloudVideoView);mPlayer.enableHardwareDecode(false);mPlayer.setRenderRotation(TXLiveConstants.RENDER_ROTATION_PORTRAIT);mPlayer.setRenderMode(TXLiveConstants.RENDER_MODE_FULL_FILL_SCREEN);mPlayer.setPlayListener(this);Bundle bundle = getArguments();if (bundle != null) {mVideoPath = bundle.getString(VIDEO_PATH);if (!TextUtils.isEmpty(mVideoPath)) {
//                mVideoFileFromRecord = mVideoPath.contains(CommonAppConfig.VIDEO_PATH_RECORD);int result = mPlayer.startPlay(mVideoPath);if (result == 0) {mPlayStarted = true;}}}}@Overridepublic void onPlayEvent(int e, Bundle bundle) {switch (e) {case TXLiveConstants.PLAY_EVT_PLAY_END://播放结束onReplay();break;case TXLiveConstants.PLAY_EVT_CHANGE_RESOLUTION://onVideoSizeChanged(bundle.getInt("EVT_PARAM1", 0), bundle.getInt("EVT_PARAM2", 0));onVideoSizeChanged();break;}}@Overridepublic void onNetStatus(Bundle bundle) {}/*** 获取到视频宽高回调*/public void onVideoSizeChanged() {double videoWidth = 0;double videoHeight = 0;MediaMetadataRetriever mmr = null;try {mmr = new MediaMetadataRetriever();mmr.setDataSource(mVideoPath);String width = mmr.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_WIDTH);//宽String height = mmr.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_HEIGHT);//高String rotation = mmr.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_ROTATION);if ("0".equals(rotation)) {if (!TextUtils.isEmpty(width)) {videoWidth = Double.parseDouble(width);}if (!TextUtils.isEmpty(height)) {videoHeight = Double.parseDouble(height);}} else {if (!TextUtils.isEmpty(height)) {videoWidth = Double.parseDouble(height);}if (!TextUtils.isEmpty(width)) {videoHeight = Double.parseDouble(width);}}} catch (Exception e) {e.printStackTrace();} finally {if (mmr != null) {mmr.release();}}if (mTXCloudVideoView != null && videoWidth > 0 && videoHeight > 0) {FrameLayout.LayoutParams params = (FrameLayout.LayoutParams) mTXCloudVideoView.getLayoutParams();if (videoWidth / videoHeight > 0.5625f) {//横屏 9:16=0.5625params.height = (int) (mTXCloudVideoView.getWidth() / videoWidth * videoHeight);params.gravity = Gravity.CENTER;mTXCloudVideoView.requestLayout();}}}/*** 获取到视频宽高回调*/public void onVideoSizeChanged(float videoWidth, float videoHeight) {if (mTXCloudVideoView != null && videoWidth > 0 && videoHeight > 0) {FrameLayout.LayoutParams params = (FrameLayout.LayoutParams) mTXCloudVideoView.getLayoutParams();if (videoWidth / videoHeight > 0.5625f) {//横屏 9:16=0.5625params.height = (int) (mTXCloudVideoView.getWidth() / videoWidth * videoHeight);params.gravity = Gravity.CENTER;mTXCloudVideoView.requestLayout();}}}/*** 显示开始播放按钮*/private void showPlayBtn() {if (mPlayBtn != null && mPlayBtn.getVisibility() != View.VISIBLE) {mPlayBtn.setVisibility(View.VISIBLE);}}/*** 隐藏开始播放按钮*/private void hidePlayBtn() {if (mPlayBtn != null && mPlayBtn.getVisibility() == View.VISIBLE) {mPlayBtn.setVisibility(View.INVISIBLE);}}/*** 点击切换播放和暂停*/private void clickTogglePlay() {if (!mPlayStarted) {return;}if (mPlayer != null) {if (mClickPaused) {mPlayer.resume();} else {mPlayer.pause();}}mClickPaused = !mClickPaused;if (mClickPaused) {showPlayBtn();if (mPlayBtnAnimator != null) {mPlayBtnAnimator.start();}} else {hidePlayBtn();}}@Overridepublic void onPause() {super.onPause();mPaused = true;if (!mClickPaused && mPlayer != null) {mPlayer.pause();}}@Overridepublic void onResume() {super.onResume();if (mPaused) {if (!mClickPaused && mPlayer != null) {mPlayer.resume();}}mPaused = false;}/*** 循环播放*/private void onReplay() {if (mPlayStarted && mPlayer != null) {mPlayer.seek(0);mPlayer.resume();}}@Overridepublic void onClick(View v) {int i = v.getId();if (i == R.id.btn_close) {dismiss();} else if (i == R.id.video_container) {clickTogglePlay();}}@Overridepublic void onDestroy() {if (mPlayer != null) {mPlayer.stopPlay(false);mPlayer.setPlayListener(null);}mContext = null;mPlayer = null;mActionListener = null;super.onDestroy();}public void setActionListener(ActionListener actionListener) {mActionListener = actionListener;}public interface ActionListener {void onDeleteClick();}}

四、项目demo源码结构图：

有问题或者需要完整源码的私信我