TrackGroup (ExoPlayer library)

java.lang.Object
- com.google.android.exoplayer2.source.TrackGroup

All Implemented Interfaces:

Parcelable
```
public final class TrackGroup
extends Object
implements Parcelable
```
Defines an immutable group of tracks identified by their format identity.

Nested Class Summary
- Nested classes/interfaces inherited from interface android.os.Parcelable
  Parcelable.ClassLoaderCreator<T extends Object>, Parcelable.Creator<T extends Object>

Field Summary

Fields
Modifier and Type Field Description

static Parcelable.Creator<TrackGroup> CREATOR

int length
The number of tracks in the group.
- Fields inherited from interface android.os.Parcelable
  CONTENTS_FILE_DESCRIPTOR, PARCELABLE_WRITE_RETURN_VALUE

Fields
Modifier and Type	Field	Description
`static Parcelable.Creator<TrackGroup>`	`CREATOR`
`int`	`length`	The number of tracks in the group.

Constructor Summary

Constructors
Constructor Description

TrackGroup(Format... formats)

Constructors
Constructor	Description
`TrackGroup(Format... formats)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`describeContents()`
`boolean`	`equals(Object obj)`
`Format`	`getFormat(int index)`	Returns the format of the track at a given index.
`int`	`hashCode()`
`int`	`indexOf(Format format)`	Returns the index of the track with the given format in the group.
`void`	`writeToParcel(Parcel dest, int flags)`

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - length
```
public final int length
```
    The number of tracks in the group.
  - CREATOR
```
public static final Parcelable.Creator<TrackGroup> CREATOR
```
- Constructor Detail
  - TrackGroup
```
public TrackGroup(Format... formats)
```
    Parameters:
    
    formats - The track formats. At least one Format must be provided.
- Method Detail
  - getFormat
```
public Format getFormat(int index)
```
    Returns the format of the track at a given index.
    
    Parameters:
    
    index - The index of the track.
    
    Returns:
    
    The track's format.
  - indexOf
```
public int indexOf(Format format)
```
    Returns the index of the track with the given format in the group. The format is located by identity so, for example, group.indexOf(group.getFormat(index)) == index even if multiple tracks have formats that contain the same values.
    
    Parameters:
    
    format - The format.
    
    Returns:
    
    The index of the track, or C.INDEX_UNSET if no such track exists.
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object
  - equals
```
public boolean equals(@Nullable
                      Object obj)
```
    Overrides:
    
    equals in class Object
  - describeContents
```
public int describeContents()
```
    Specified by:
    
    describeContents in interface Parcelable
  - writeToParcel
```
public void writeToParcel(Parcel dest,
                          int flags)
```
    Specified by:
    
    writeToParcel in interface Parcelable

Class TrackGroup

Nested Class Summary

Nested classes/interfaces inherited from interface android.os.Parcelable

Field Summary

Fields inherited from interface android.os.Parcelable

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

length

CREATOR

Constructor Detail

TrackGroup

Method Detail

getFormat

indexOf

hashCode

equals

describeContents

writeToParcel