我必须确保在用户单击按钮时，在视频运行时具有添加字幕的功能。
还可以删除它们。
外观：sub.setOnClickListener(new View.OnClickListener() { ...
我必须确保在用户想要启用字幕时将其启用。
如果要删除它们，可以删除它们。
package com.exoplayer;
import android.content.DialogInterface;
import android.net.Uri;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;
import com.google.android.exoplayer2.C;
import com.google.android.exoplayer2.DefaultLoadControl;
import com.google.android.exoplayer2.ExoPlaybackException;
import com.google.android.exoplayer2.ExoPlayer;
import com.google.android.exoplayer2.ExoPlayerFactory;
import com.google.android.exoplayer2.Format;
import com.google.android.exoplayer2.LoadControl;
import com.google.android.exoplayer2.PlaybackParameters;
import com.google.android.exoplayer2.SimpleExoPlayer;
import com.google.android.exoplayer2.Timeline;
import com.google.android.exoplayer2.extractor.DefaultExtractorsFactory;
import com.google.android.exoplayer2.extractor.ExtractorsFactory;
import com.google.android.exoplayer2.source.ExtractorMediaSource;
import com.google.android.exoplayer2.source.MediaSource;
import com.google.android.exoplayer2.source.MergingMediaSource;
import com.google.android.exoplayer2.source.SingleSampleMediaSource;
import com.google.android.exoplayer2.source.TrackGroupArray;
import com.google.android.exoplayer2.trackselection.AdaptiveTrackSelection;
import com.google.android.exoplayer2.trackselection.DefaultTrackSelector;
import com.google.android.exoplayer2.trackselection.TrackSelection;
import com.google.android.exoplayer2.trackselection.TrackSelectionArray;
import com.google.android.exoplayer2.trackselection.TrackSelector;
import com.google.android.exoplayer2.ui.SimpleExoPlayerView;
import com.google.android.exoplayer2.upstream.BandwidthMeter;
import com.google.android.exoplayer2.upstream.DataSource;
import com.google.android.exoplayer2.upstream.DefaultBandwidthMeter;
import com.google.android.exoplayer2.upstream.DefaultDataSourceFactory;
import com.google.android.exoplayer2.util.MimeTypes;
import com.google.android.exoplayer2.util.Util;
public class SimpleVideoStream extends AppCompatActivity implements ExoPlayer.EventListener {
final String sub = "https://pastebin.com/raw/0mTMeH3e";
SimpleExoPlayer player;
String title, path;
DataSource.Factory dataSourceFactory;
MediaSource videoSource;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Bundle b = getIntent().getExtras();
title = b.getString("mediaTitle");
path = b.getString("mediaUrl");
TextView video_title = (TextView) findViewById(R.id.video_title);
video_title.setText(title);
// 1. Create a default TrackSelector
BandwidthMeter bandwidthMeter = new DefaultBandwidthMeter();
TrackSelection.Factory videoTrackSelectionFactory = new AdaptiveTrackSelection.Factory(bandwidthMeter);
TrackSelector trackSelector = new DefaultTrackSelector(videoTrackSelectionFactory);
// 2. Create a default LoadControl
LoadControl loadControl = new DefaultLoadControl();
// 3. Create the player
player = ExoPlayerFactory.newSimpleInstance(this, trackSelector, loadControl);
SimpleExoPlayerView playerView = (SimpleExoPlayerView) findViewById(R.id.exo_player_view);
playerView.setPlayer(player);
playerView.setKeepScreenOn(true);
// Produces DataSource instances through which media data is loaded.
dataSourceFactory = new DefaultDataSourceFactory(this, Util.getUserAgent(this, "ExoPlayer"));
// Produces Extractor instances for parsing the media data.
final ExtractorsFactory extractorsFactory = new DefaultExtractorsFactory();
// This is the MediaSource representing the media to be played.
videoSource = new ExtractorMediaSource(Uri.parse(path),
dataSourceFactory, extractorsFactory, null, null);
// Prepare the player with the source.
player.addListener(this);
player.prepare(videoSource);
playerView.requestFocus();
player.setPlayWhenReady(true); // to play video when ready. Use false to pause a video
final ImageView sub = (ImageView) findViewById(R.id.exo_sub);
sub.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.v("ok", " click");
Format textFormat = Format.createTextSampleFormat(null, MimeTypes.APPLICATION_SUBRIP,
null, Format.NO_VALUE, Format.NO_VALUE, "en", null, Format.OFFSET_SAMPLE_RELATIVE);
MediaSource textMediaSource = new SingleSampleMediaSource.Factory(dataSourceFactory)
.createMediaSource(Uri.parse(String.valueOf(sub)), textFormat, C.TIME_UNSET);
videoSource = new MergingMediaSource(videoSource, textMediaSource);
player.prepare(videoSource);
}
});
}
@Override
protected void onPause() {
super.onPause();
if (player != null) {
player.setPlayWhenReady(false); //to pause a video because now our video player is not in focus
}
}
@Override
public void onTracksChanged(TrackGroupArray trackGroups, TrackSelectionArray
trackSelections) {
}
@Override
public void onLoadingChanged(boolean isLoading) {
}
@Override
public void onPlayerStateChanged(boolean playWhenReady, int playbackState) {
switch (playbackState) {
case ExoPlayer.STATE_BUFFERING:
//You can use progress dialog to show user that video is preparing or buffering so please wait
break;
case ExoPlayer.STATE_IDLE:
//idle state
break;
case ExoPlayer.STATE_READY:
// dismiss your dialog here because our video is ready to play now
break;
case ExoPlayer.STATE_ENDED:
// do your processing after ending of video
break;
}
}
@Override
public void onPlayerError(ExoPlaybackException error) {
// show user that something went wrong. I am showing dialog but you can use your way
AlertDialog.Builder adb = new AlertDialog.Builder(this);
adb.setTitle("Could not able to stream video");
adb.setMessage("It seems that something is going wrong.\nPlease try again.");
adb.setPositiveButton("OK", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
finish(); // take out user from this activity. you can skip this
}
});
AlertDialog ad = adb.create();
ad.show();
}
@Override
public void onTimelineChanged(Timeline timeline, Object manifest, int reason) {
}
@Override
public void onRepeatModeChanged(int repeatMode) {
}
@Override
public void onShuffleModeEnabledChanged(boolean shuffleModeEnabled) {
}
@Override
public void onPositionDiscontinuity(int reason) {
}
@Override
public void onPlaybackParametersChanged(PlaybackParameters playbackParameters) {
}
@Override
public void onSeekProcessed() {
}
@Override
public void onWindowFocusChanged(boolean hasFocus) {
super.onWindowFocusChanged(hasFocus);
if (hasFocus) {
getWindow().getDecorView().setSystemUiVisibility(
View.SYSTEM_UI_FLAG_LAYOUT_STABLE
| View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
| View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
| View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
| View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
| View.SYSTEM_UI_FLAG_FULLSCREEN
| View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
}
}
}