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Allow stable API users to use DebugTextViewHelper

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This is used from the main demo app.

PiperOrigin-RevId: 445420580
This commit is contained in:
ibaker 2022-04-29 16:02:27 +01:00 committed by Ian Baker
parent b0df946f67
commit b9a8da4e3e
1 changed files with 39 additions and 34 deletions
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73
library/core/src/main/java/com/google/android/exoplayer2/util/DebugTextViewHelper.java
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@ -28,12 +28,13 @@ import java.util.Locale;
* A helper class for periodically updating a {@link TextView} with debug information obtained from
* an {@link ExoPlayer}.
*/
public class DebugTextViewHelper implements Player.Listener, Runnable {
public class DebugTextViewHelper {
private static final int REFRESH_INTERVAL_MS = 1000;
private final ExoPlayer player;
private final TextView textView;
private final Updater updater;
private boolean started;
@ -47,6 +48,7 @@ public class DebugTextViewHelper implements Player.Listener, Runnable {
Assertions.checkArgument(player.getApplicationLooper() == Looper.getMainLooper());
this.player = player;
this.textView = textView;
this.updater = new Updater();
}
/**
@ -58,7 +60,7 @@ public class DebugTextViewHelper implements Player.Listener, Runnable {
return;
}
started = true;
player.addListener(this);
player.addListener(updater);
updateAndPost();
}
@ -71,36 +73,8 @@ public class DebugTextViewHelper implements Player.Listener, Runnable {
return;
}
started = false;
player.removeListener(this);
textView.removeCallbacks(this);
}
// Player.Listener implementation.
@Override
public final void onPlaybackStateChanged(@Player.State int playbackState) {
updateAndPost();
}
@Override
public final void onPlayWhenReadyChanged(
boolean playWhenReady, @Player.PlayWhenReadyChangeReason int reason) {
updateAndPost();
}
@Override
public final void onPositionDiscontinuity(
Player.PositionInfo oldPosition,
Player.PositionInfo newPosition,
@Player.DiscontinuityReason int reason) {
updateAndPost();
}
// Runnable implementation.
@Override
public final void run() {
updateAndPost();
player.removeListener(updater);
textView.removeCallbacks(updater);
}
// Protected methods.
@ -108,8 +82,8 @@ public class DebugTextViewHelper implements Player.Listener, Runnable {
@SuppressLint("SetTextI18n")
protected final void updateAndPost() {
textView.setText(getDebugString());
textView.removeCallbacks(this);
textView.postDelayed(this, REFRESH_INTERVAL_MS);
textView.removeCallbacks(updater);
textView.postDelayed(updater, REFRESH_INTERVAL_MS);
}
/** Returns the debugging information string to be shown by the target {@link TextView}. */
@ -219,4 +193,35 @@ public class DebugTextViewHelper implements Player.Listener, Runnable {
return String.valueOf(averageUs);
}
}
private final class Updater implements Player.Listener, Runnable {
// Player.Listener implementation.
@Override
public void onPlaybackStateChanged(@Player.State int playbackState) {
updateAndPost();
}
@Override
public void onPlayWhenReadyChanged(
boolean playWhenReady, @Player.PlayWhenReadyChangeReason int reason) {
updateAndPost();
}
@Override
public void onPositionDiscontinuity(
Player.PositionInfo oldPosition,
Player.PositionInfo newPosition,
@Player.DiscontinuityReason int reason) {
updateAndPost();
}
// Runnable implementation.
@Override
public void run() {
updateAndPost();
}
}
}