问题在于，当我尝试更改播放器的方向时会有延迟。视频恢复前会有2到3秒的延迟。除了方向改变之外，其他任何事情都可以正常工作。
public class MainActivity extends AppCompatActivity {
private final String STATE_RESUME_WINDOW = "resumeWindow";
private final String STATE_RESUME_POSITION = "resumePosition";
private final String STATE_PLAYER_FULLSCREEN = "playerFullscreen";
private SimpleExoPlayerView mExoPlayerView;
private MediaSource mVideoSource;
private boolean mExoPlayerFullscreen = false;
private FrameLayout mFullScreenButton;
private ImageView mFullScreenIcon;
private Dialog mFullScreenDialog;
private int mResumeWindow;
private long mResumePosition;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (savedInstanceState != null) {
mResumeWindow = savedInstanceState.getInt(STATE_RESUME_WINDOW);
mResumePosition = savedInstanceState.getLong(STATE_RESUME_POSITION);
mExoPlayerFullscreen = savedInstanceState.getBoolean(STATE_PLAYER_FULLSCREEN);
}
}
@Override
public void onSaveInstanceState(Bundle outState) {
outState.putInt(STATE_RESUME_WINDOW, mResumeWindow);
outState.putLong(STATE_RESUME_POSITION, mResumePosition);
outState.putBoolean(STATE_PLAYER_FULLSCREEN, mExoPlayerFullscreen);
super.onSaveInstanceState(outState);
}
private void initFullscreenDialog() {
mFullScreenDialog = new Dialog(this, android.R.style.Theme_Black_NoTitleBar_Fullscreen) {
public void onBackPressed() {
if (mExoPlayerFullscreen)
closeFullscreenDialog();
super.onBackPressed();
}
};
}
private void openFullscreenDialog() {
((ViewGroup) mExoPlayerView.getParent()).removeView(mExoPlayerView);
mFullScreenDialog.addContentView(mExoPlayerView, new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,ViewGroup.LayoutParams.MATCH_PARENT));
mFullScreenIcon.setImageDrawable(ContextCompat.getDrawable(MainActivity.this,R.drawable.ic_fullscreen_shrink));
mExoPlayerFullscreen = true;
mFullScreenDialog.show();
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
}
private void closeFullscreenDialog() {
((ViewGroup) mExoPlayerView.getParent()).removeView(mExoPlayerView);
((FrameLayout) findViewById(R.id.main_media_frame)).addView(mExoPlayerView);
mExoPlayerFullscreen = false;
mFullScreenDialog.dismiss();
mFullScreenIcon.setImageDrawable(ContextCompat.getDrawable(MainActivity.this,R.drawable.ic_fullscreen_expand));
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
}
private void initFullscreenButton() {
PlaybackControlView controlView = mExoPlayerView.findViewById(R.id.exo_controller);
mFullScreenIcon = controlView.findViewById(R.id.exo_fullscreen_icon);
mFullScreenButton = controlView.findViewById(R.id.exo_fullscreen_button);
mFullScreenButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (!mExoPlayerFullscreen)
openFullscreenDialog();
else
closeFullscreenDialog();
}
});
}
private void initExoPlayer() {
BandwidthMeter bandwidthMeter = new DefaultBandwidthMeter();
TrackSelection.Factory videoTrackSelectionFactory = new AdaptiveTrackSelection.Factory(bandwidthMeter);
TrackSelector trackSelector = new DefaultTrackSelector(videoTrackSelectionFactory);
LoadControl loadControl = new DefaultLoadControl();
SimpleExoPlayer player = ExoPlayerFactory.newSimpleInstance(new DefaultRenderersFactory(this),trackSelector, loadControl);
mExoPlayerView.setPlayer(player);
boolean haveResumePosition = mResumeWindow != C.INDEX_UNSET;
if (haveResumePosition) {
mExoPlayerView.getPlayer().seekTo(mResumeWindow, mResumePosition);
}
mExoPlayerView.getPlayer().prepare(mVideoSource);
mExoPlayerView.getPlayer().setPlayWhenReady(true);
}
@Override
protected void onResume() {
super.onResume();
if (mExoPlayerView == null) {
mExoPlayerView = (SimpleExoPlayerView) findViewById(R.id.exoplayer);
initFullscreenDialog();
initFullscreenButton();
String streamUrl = "https://mnmedias.api.telequebec.tv/m3u8/29880.m3u8";
String userAgent = Util.getUserAgent(MainActivity.this, getApplicationContext().getApplicationInfo().packageName);
DefaultHttpDataSourceFactory httpDataSourceFactory = new DefaultHttpDataSourceFactory(userAgent, null,
DefaultHttpDataSource.DEFAULT_CONNECT_TIMEOUT_MILLIS,
DefaultHttpDataSource.DEFAULT_READ_TIMEOUT_MILLIS, true);
DefaultDataSourceFactory dataSourceFactory = new DefaultDataSourceFactory(MainActivity.this, null,httpDataSourceFactory);
Uri daUri = Uri.parse(streamUrl);
mVideoSource = new HlsMediaSource(daUri, dataSourceFactory, 1, null, null);
}
initExoPlayer();
if (mExoPlayerFullscreen) {
((ViewGroup) mExoPlayerView.getParent()).removeView(mExoPlayerView);
mFullScreenDialog.addContentView(mExoPlayerView, new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.MATCH_PARENT));
mFullScreenIcon.setImageDrawable(ContextCompat.getDrawable(MainActivity.this,
R.drawable.ic_fullscreen_shrink));
mFullScreenDialog.show();
}
}
@Override
protected void onPause() {
super.onPause();
if (mExoPlayerView != null && mExoPlayerView.getPlayer() != null) {
mResumeWindow = mExoPlayerView.getPlayer().getCurrentWindowIndex();
mResumePosition = Math.max(0, mExoPlayerView.getPlayer().getContentPosition());
mExoPlayerView.getPlayer().release();
}
if (mFullScreenDialog != null)
mFullScreenDialog.dismiss();
}
}
答案 0 :(得分：1)
您应该查看handling configuration changes yourself - 正如@marcbaechinger上面提到的那样。
必要的部分在这里：
<activity android:name=".MyActivity"
android:configChanges="orientation|screenSize"
android:label="@string/app_name">
最重要的部分是：
请记住：当您声明活动以处理配置更改时，您有责任重置您提供备选方案的任何元素。如果您声明活动以处理方向更改并且图像应在横向和纵向之间更改，则必须在onConfigurationChanged（）期间将每个资源重新分配给每个元素。
但如果您没有任何横向特定的布局文件或图像，那么您可能会没事。
我们必须编写自己的全屏逻辑进行轮换，但这很简单，因为Android会为您提供配置更改事件。
为了对这种方法有一点额外的有效性，谷歌通过Youtube player documentation推荐（特别是关于全屏）：
要为支持纵向的活动实现此目的，您需要指定您的活动在应用程序的清单中自行处理某些配置更改，包括orientation，keyboardHidden和screenSize。