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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">com.google.android.exoplayer2.util</a></div>
<h2 title="Class DebugTextViewHelper" class="title">Class DebugTextViewHelper</h2>
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<li><a href="https://developer.android.com/reference/java/lang/Object.html" title="class or interface in java.lang" class="externalLink" target="_top">java.lang.Object</a></li>
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<dt>All Implemented Interfaces:</dt>
<dd><code><a href="../audio/AudioListener.html" title="interface in com.google.android.exoplayer2.audio">AudioListener</a></code>, <code><a href="../device/DeviceListener.html" title="interface in com.google.android.exoplayer2.device">DeviceListener</a></code>, <code><a href="../metadata/MetadataOutput.html" title="interface in com.google.android.exoplayer2.metadata">MetadataOutput</a></code>, <code><a href="../Player.EventListener.html" title="interface in com.google.android.exoplayer2">Player.EventListener</a></code>, <code><a href="../Player.Listener.html" title="interface in com.google.android.exoplayer2">Player.Listener</a></code>, <code><a href="../text/TextOutput.html" title="interface in com.google.android.exoplayer2.text">TextOutput</a></code>, <code><a href="../video/VideoListener.html" title="interface in com.google.android.exoplayer2.video">VideoListener</a></code>, <code><a href="https://developer.android.com/reference/java/lang/Runnable.html" title="class or interface in java.lang" class="externalLink" target="_top">Runnable</a></code></dd>
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<pre>public class <span class="typeNameLabel">DebugTextViewHelper</span>
extends <a href="https://developer.android.com/reference/java/lang/Object.html" title="class or interface in java.lang" class="externalLink" target="_top">Object</a>
implements <a href="../Player.Listener.html" title="interface in com.google.android.exoplayer2">Player.Listener</a>, <a href="https://developer.android.com/reference/java/lang/Runnable.html" title="class or interface in java.lang" class="externalLink" target="_top">Runnable</a></pre>
<div class="block">A helper class for periodically updating a <a href="https://developer.android.com/reference/android/widget/TextView.html" title="class or interface in android.widget" class="externalLink" target="_top"><code>TextView</code></a> with debug information obtained from
a <a href="../SimpleExoPlayer.html" title="class in com.google.android.exoplayer2"><code>SimpleExoPlayer</code></a>.</div>
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<th class="colFirst" scope="col">Constructor</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tr class="altColor">
<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(com.google.android.exoplayer2.SimpleExoPlayer,android.widget.TextView)">DebugTextViewHelper</a></span>&#8203;(<a href="../SimpleExoPlayer.html" title="class in com.google.android.exoplayer2">SimpleExoPlayer</a>&nbsp;player,
<a href="https://developer.android.com/reference/android/widget/TextView.html" title="class or interface in android.widget" class="externalLink" target="_top">TextView</a>&nbsp;textView)</code></th>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Method</th>
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<td class="colFirst"><code>protected <a href="https://developer.android.com/reference/java/lang/String.html" title="class or interface in java.lang" class="externalLink" target="_top">String</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getAudioString()">getAudioString</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns a string containing audio debugging information.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>protected <a href="https://developer.android.com/reference/java/lang/String.html" title="class or interface in java.lang" class="externalLink" target="_top">String</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getDebugString()">getDebugString</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns the debugging information string to be shown by the target <a href="https://developer.android.com/reference/android/widget/TextView.html" title="class or interface in android.widget" class="externalLink" target="_top"><code>TextView</code></a>.</div>
</td>
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<tr id="i2" class="altColor">
<td class="colFirst"><code>protected <a href="https://developer.android.com/reference/java/lang/String.html" title="class or interface in java.lang" class="externalLink" target="_top">String</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getPlayerStateString()">getPlayerStateString</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns a string containing player state debugging information.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>protected <a href="https://developer.android.com/reference/java/lang/String.html" title="class or interface in java.lang" class="externalLink" target="_top">String</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getVideoString()">getVideoString</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns a string containing video debugging information.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#onPlaybackStateChanged(int)">onPlaybackStateChanged</a></span>&#8203;(int&nbsp;playbackState)</code></th>
<td class="colLast">
<div class="block">Called when the value returned from <a href="../Player.html#getPlaybackState()"><code>Player.getPlaybackState()</code></a> changes.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#onPlayWhenReadyChanged(boolean,int)">onPlayWhenReadyChanged</a></span>&#8203;(boolean&nbsp;playWhenReady,
int&nbsp;playbackState)</code></th>
<td class="colLast">
<div class="block">Called when the value returned from <a href="../Player.html#getPlayWhenReady()"><code>Player.getPlayWhenReady()</code></a> changes.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#onPositionDiscontinuity(com.google.android.exoplayer2.Player.PositionInfo,com.google.android.exoplayer2.Player.PositionInfo,int)">onPositionDiscontinuity</a></span>&#8203;(<a href="../Player.PositionInfo.html" title="class in com.google.android.exoplayer2">Player.PositionInfo</a>&nbsp;oldPosition,
<a href="../Player.PositionInfo.html" title="class in com.google.android.exoplayer2">Player.PositionInfo</a>&nbsp;newPosition,
int&nbsp;reason)</code></th>
<td class="colLast">
<div class="block">Called when a position discontinuity occurs.</div>
</td>
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<tr id="i7" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#run()">run</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#start()">start</a></span>()</code></th>
<td class="colLast">
<div class="block">Starts periodic updates of the <a href="https://developer.android.com/reference/android/widget/TextView.html" title="class or interface in android.widget" class="externalLink" target="_top"><code>TextView</code></a>.</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#stop()">stop</a></span>()</code></th>
<td class="colLast">
<div class="block">Stops periodic updates of the <a href="https://developer.android.com/reference/android/widget/TextView.html" title="class or interface in android.widget" class="externalLink" target="_top"><code>TextView</code></a>.</div>
</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>protected void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#updateAndPost()">updateAndPost</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
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<code><a href="../audio/AudioListener.html#onAudioAttributesChanged(com.google.android.exoplayer2.audio.AudioAttributes)">onAudioAttributesChanged</a>, <a href="../audio/AudioListener.html#onAudioSessionIdChanged(int)">onAudioSessionIdChanged</a>, <a href="../audio/AudioListener.html#onSkipSilenceEnabledChanged(boolean)">onSkipSilenceEnabledChanged</a>, <a href="../audio/AudioListener.html#onVolumeChanged(float)">onVolumeChanged</a></code></li>
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<code><a href="../device/DeviceListener.html#onDeviceInfoChanged(com.google.android.exoplayer2.device.DeviceInfo)">onDeviceInfoChanged</a>, <a href="../device/DeviceListener.html#onDeviceVolumeChanged(int,boolean)">onDeviceVolumeChanged</a></code></li>
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<h3>Methods inherited from interface&nbsp;com.google.android.exoplayer2.<a href="../Player.EventListener.html" title="interface in com.google.android.exoplayer2">Player.EventListener</a></h3>
<code><a href="../Player.EventListener.html#onAvailableCommandsChanged(com.google.android.exoplayer2.Player.Commands)">onAvailableCommandsChanged</a>, <a href="../Player.EventListener.html#onEvents(com.google.android.exoplayer2.Player,com.google.android.exoplayer2.Player.Events)">onEvents</a>, <a href="../Player.EventListener.html#onIsLoadingChanged(boolean)">onIsLoadingChanged</a>, <a href="../Player.EventListener.html#onIsPlayingChanged(boolean)">onIsPlayingChanged</a>, <a href="../Player.EventListener.html#onLoadingChanged(boolean)">onLoadingChanged</a>, <a href="../Player.EventListener.html#onMediaItemTransition(com.google.android.exoplayer2.MediaItem,int)">onMediaItemTransition</a>, <a href="../Player.EventListener.html#onMediaMetadataChanged(com.google.android.exoplayer2.MediaMetadata)">onMediaMetadataChanged</a>, <a href="../Player.EventListener.html#onPlaybackParametersChanged(com.google.android.exoplayer2.PlaybackParameters)">onPlaybackParametersChanged</a>, <a href="../Player.EventListener.html#onPlaybackSuppressionReasonChanged(int)">onPlaybackSuppressionReasonChanged</a>, <a href="../Player.EventListener.html#onPlayerError(com.google.android.exoplayer2.ExoPlaybackException)">onPlayerError</a>, <a href="../Player.EventListener.html#onPlayerStateChanged(boolean,int)">onPlayerStateChanged</a>, <a href="../Player.EventListener.html#onPositionDiscontinuity(int)">onPositionDiscontinuity</a>, <a href="../Player.EventListener.html#onRepeatModeChanged(int)">onRepeatModeChanged</a>, <a href="../Player.EventListener.html#onSeekProcessed()">onSeekProcessed</a>, <a href="../Player.EventListener.html#onShuffleModeEnabledChanged(boolean)">onShuffleModeEnabledChanged</a>, <a href="../Player.EventListener.html#onStaticMetadataChanged(java.util.List)">onStaticMetadataChanged</a>, <a href="../Player.EventListener.html#onTimelineChanged(com.google.android.exoplayer2.Timeline,int)">onTimelineChanged</a>, <a href="../Player.EventListener.html#onTimelineChanged(com.google.android.exoplayer2.Timeline,java.lang.Object,int)">onTimelineChanged</a>, <a href="../Player.EventListener.html#onTracksChanged(com.google.android.exoplayer2.source.TrackGroupArray,com.google.android.exoplayer2.trackselection.TrackSelectionArray)">onTracksChanged</a></code></li>
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<code><a href="../Player.Listener.html#onCues(java.util.List)">onCues</a>, <a href="../Player.Listener.html#onMetadata(com.google.android.exoplayer2.metadata.Metadata)">onMetadata</a></code></li>
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<h3>Methods inherited from interface&nbsp;com.google.android.exoplayer2.video.<a href="../video/VideoListener.html" title="interface in com.google.android.exoplayer2.video">VideoListener</a></h3>
<code><a href="../video/VideoListener.html#onRenderedFirstFrame()">onRenderedFirstFrame</a>, <a href="../video/VideoListener.html#onSurfaceSizeChanged(int,int)">onSurfaceSizeChanged</a>, <a href="../video/VideoListener.html#onVideoSizeChanged(int,int,int,float)">onVideoSizeChanged</a>, <a href="../video/VideoListener.html#onVideoSizeChanged(com.google.android.exoplayer2.video.VideoSize)">onVideoSizeChanged</a></code></li>
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<h4>DebugTextViewHelper</h4>
<pre>public&nbsp;DebugTextViewHelper&#8203;(<a href="../SimpleExoPlayer.html" title="class in com.google.android.exoplayer2">SimpleExoPlayer</a>&nbsp;player,
<a href="https://developer.android.com/reference/android/widget/TextView.html" title="class or interface in android.widget" class="externalLink" target="_top">TextView</a>&nbsp;textView)</pre>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>player</code> - The <a href="../SimpleExoPlayer.html" title="class in com.google.android.exoplayer2"><code>SimpleExoPlayer</code></a> from which debug information should be obtained. Only
players which are accessed on the main thread are supported (<code>
player.getApplicationLooper() == Looper.getMainLooper()</code>).</dd>
<dd><code>textView</code> - The <a href="https://developer.android.com/reference/android/widget/TextView.html" title="class or interface in android.widget" class="externalLink" target="_top"><code>TextView</code></a> that should be updated to display the information.</dd>
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<h4>start</h4>
<pre class="methodSignature">public final&nbsp;void&nbsp;start()</pre>
<div class="block">Starts periodic updates of the <a href="https://developer.android.com/reference/android/widget/TextView.html" title="class or interface in android.widget" class="externalLink" target="_top"><code>TextView</code></a>. Must be called from the application's main
thread.</div>
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<h4>stop</h4>
<pre class="methodSignature">public final&nbsp;void&nbsp;stop()</pre>
<div class="block">Stops periodic updates of the <a href="https://developer.android.com/reference/android/widget/TextView.html" title="class or interface in android.widget" class="externalLink" target="_top"><code>TextView</code></a>. Must be called from the application's main
thread.</div>
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<h4>onPlaybackStateChanged</h4>
<pre class="methodSignature">public final&nbsp;void&nbsp;onPlaybackStateChanged&#8203;(<a href="../Player.State.html" title="annotation in com.google.android.exoplayer2">@State</a>
int&nbsp;playbackState)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../Player.EventListener.html#onPlaybackStateChanged(int)">Player.EventListener</a></code></span></div>
<div class="block">Called when the value returned from <a href="../Player.html#getPlaybackState()"><code>Player.getPlaybackState()</code></a> changes.
<p><a href="../Player.EventListener.html#onEvents(com.google.android.exoplayer2.Player,com.google.android.exoplayer2.Player.Events)"><code>Player.EventListener.onEvents(Player, Events)</code></a> will also be called to report this event along with
other events that happen in the same <a href="https://developer.android.com/reference/android/os/Looper.html" title="class or interface in android.os" class="externalLink" target="_top"><code>Looper</code></a> message queue iteration.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../Player.EventListener.html#onPlaybackStateChanged(int)">onPlaybackStateChanged</a></code>&nbsp;in interface&nbsp;<code><a href="../Player.EventListener.html" title="interface in com.google.android.exoplayer2">Player.EventListener</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>playbackState</code> - The new playback <a href="../Player.State.html" title="annotation in com.google.android.exoplayer2"><code>state</code></a>.</dd>
</dl>
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<h4>onPlayWhenReadyChanged</h4>
<pre class="methodSignature">public final&nbsp;void&nbsp;onPlayWhenReadyChanged&#8203;(boolean&nbsp;playWhenReady,
<a href="../Player.PlayWhenReadyChangeReason.html" title="annotation in com.google.android.exoplayer2">@PlayWhenReadyChangeReason</a>
int&nbsp;playbackState)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../Player.EventListener.html#onPlayWhenReadyChanged(boolean,int)">Player.EventListener</a></code></span></div>
<div class="block">Called when the value returned from <a href="../Player.html#getPlayWhenReady()"><code>Player.getPlayWhenReady()</code></a> changes.
<p><a href="../Player.EventListener.html#onEvents(com.google.android.exoplayer2.Player,com.google.android.exoplayer2.Player.Events)"><code>Player.EventListener.onEvents(Player, Events)</code></a> will also be called to report this event along with
other events that happen in the same <a href="https://developer.android.com/reference/android/os/Looper.html" title="class or interface in android.os" class="externalLink" target="_top"><code>Looper</code></a> message queue iteration.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../Player.EventListener.html#onPlayWhenReadyChanged(boolean,int)">onPlayWhenReadyChanged</a></code>&nbsp;in interface&nbsp;<code><a href="../Player.EventListener.html" title="interface in com.google.android.exoplayer2">Player.EventListener</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>playWhenReady</code> - Whether playback will proceed when ready.</dd>
<dd><code>playbackState</code> - The <a href="../Player.PlayWhenReadyChangeReason.html" title="annotation in com.google.android.exoplayer2"><code>reason</code></a> for the change.</dd>
</dl>
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<a id="onPositionDiscontinuity(com.google.android.exoplayer2.Player.PositionInfo,com.google.android.exoplayer2.Player.PositionInfo,int)">
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<h4>onPositionDiscontinuity</h4>
<pre class="methodSignature">public final&nbsp;void&nbsp;onPositionDiscontinuity&#8203;(<a href="../Player.PositionInfo.html" title="class in com.google.android.exoplayer2">Player.PositionInfo</a>&nbsp;oldPosition,
<a href="../Player.PositionInfo.html" title="class in com.google.android.exoplayer2">Player.PositionInfo</a>&nbsp;newPosition,
<a href="../Player.DiscontinuityReason.html" title="annotation in com.google.android.exoplayer2">@DiscontinuityReason</a>
int&nbsp;reason)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../Player.EventListener.html#onPositionDiscontinuity(com.google.android.exoplayer2.Player.PositionInfo,com.google.android.exoplayer2.Player.PositionInfo,int)">Player.EventListener</a></code></span></div>
<div class="block">Called when a position discontinuity occurs.
<p>A position discontinuity occurs when the playing period changes, the playback position
jumps within the period currently being played, or when the playing period has been skipped
or removed.
<p><a href="../Player.EventListener.html#onEvents(com.google.android.exoplayer2.Player,com.google.android.exoplayer2.Player.Events)"><code>Player.EventListener.onEvents(Player, Events)</code></a> will also be called to report this event along with
other events that happen in the same <a href="https://developer.android.com/reference/android/os/Looper.html" title="class or interface in android.os" class="externalLink" target="_top"><code>Looper</code></a> message queue iteration.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../Player.EventListener.html#onPositionDiscontinuity(com.google.android.exoplayer2.Player.PositionInfo,com.google.android.exoplayer2.Player.PositionInfo,int)">onPositionDiscontinuity</a></code>&nbsp;in interface&nbsp;<code><a href="../Player.EventListener.html" title="interface in com.google.android.exoplayer2">Player.EventListener</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>oldPosition</code> - The position before the discontinuity.</dd>
<dd><code>newPosition</code> - The position after the discontinuity.</dd>
<dd><code>reason</code> - The <a href="../Player.DiscontinuityReason.html" title="annotation in com.google.android.exoplayer2"><code>Player.DiscontinuityReason</code></a> responsible for the discontinuity.</dd>
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<h4>run</h4>
<pre class="methodSignature">public final&nbsp;void&nbsp;run()</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="https://developer.android.com/reference/java/lang/Runnable.html#run()" title="class or interface in java.lang" class="externalLink">run</a></code>&nbsp;in interface&nbsp;<code><a href="https://developer.android.com/reference/java/lang/Runnable.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_top">Runnable</a></code></dd>
</dl>
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<h4>updateAndPost</h4>
<pre class="methodSignature">protected final&nbsp;void&nbsp;updateAndPost()</pre>
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<h4>getDebugString</h4>
<pre class="methodSignature">protected&nbsp;<a href="https://developer.android.com/reference/java/lang/String.html" title="class or interface in java.lang" class="externalLink" target="_top">String</a>&nbsp;getDebugString()</pre>
<div class="block">Returns the debugging information string to be shown by the target <a href="https://developer.android.com/reference/android/widget/TextView.html" title="class or interface in android.widget" class="externalLink" target="_top"><code>TextView</code></a>.</div>
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<h4>getPlayerStateString</h4>
<pre class="methodSignature">protected&nbsp;<a href="https://developer.android.com/reference/java/lang/String.html" title="class or interface in java.lang" class="externalLink" target="_top">String</a>&nbsp;getPlayerStateString()</pre>
<div class="block">Returns a string containing player state debugging information.</div>
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<h4>getVideoString</h4>
<pre class="methodSignature">protected&nbsp;<a href="https://developer.android.com/reference/java/lang/String.html" title="class or interface in java.lang" class="externalLink" target="_top">String</a>&nbsp;getVideoString()</pre>
<div class="block">Returns a string containing video debugging information.</div>
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<h4>getAudioString</h4>
<pre class="methodSignature">protected&nbsp;<a href="https://developer.android.com/reference/java/lang/String.html" title="class or interface in java.lang" class="externalLink" target="_top">String</a>&nbsp;getAudioString()</pre>
<div class="block">Returns a string containing audio debugging information.</div>
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