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
Android开发教程实战案例源码分享-视频预览效果
三、关键代码：
java
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;
@Override
protected int getLayoutId() {
return R.layout.dialog_active_video_preview;
}
@Override
protected int getDialogStyle() {
return R.style.dialog2;
}
@Override
protected boolean canCancel() {
return true;
}
@Override
protected void setWindowAttributes(Window window) {
WindowManager.LayoutParams params = window.getAttributes();
params.width = WindowManager.LayoutParams.MATCH_PARENT;
params.height = WindowManager.LayoutParams.MATCH_PARENT;
window.setAttributes(params);
}
@Override
public 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;
}
}
}
}
@Override
public 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;
}
}
@Override
public 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=0.5625
params.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=0.5625
params.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();
}
}
@Override
public void onPause() {
super.onPause();
mPaused = true;
if (!mClickPaused && mPlayer != null) {
mPlayer.pause();
}
}
@Override
public 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();
}
}
@Override
public void onClick(View v) {
int i = v.getId();
if (i == R.id.btn_close) {
dismiss();
} else if (i == R.id.video_container) {
clickTogglePlay();
}
}
@Override
public 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