Assertions (ExoPlayer library) - Exoplayer

Package com.google.android.exoplayer2.util

Class Assertions

java.lang.Object
- com.google.android.exoplayer2.util.Assertions

[@Deprecated](https://developer.android.com/reference/java/lang/Deprecated.html "class or interface in java.lang")public final classAssertionsextends[Object](https://developer.android.com/reference/java/lang/Object.html "class or interface in java.lang")

Deprecated. com.google.android.exoplayer2 is deprecated. Please migrate to androidx.media3 (which contains the same ExoPlayer code). See the migration guide for more details, including a script to help with the migration.

Provides methods for asserting the truth of expressions and properties.

Method Summary

All Methods Static Methods Concrete Methods Deprecated Methods | Modifier and Type | Method | Description | | --- | --- | --- | | static void | checkArgument(boolean expression) | Deprecated.

Throws IllegalArgumentException if expression evaluates to false. | | static void | checkArgument(boolean expression, Object errorMessage) | Deprecated.

Throws IllegalArgumentException if expression evaluates to false. | | static int | checkIndex(int index, int start, int limit) | Deprecated.

Throws IndexOutOfBoundsException if index falls outside the specified bounds. | | static void | checkMainThread() | Deprecated.

Throws IllegalStateException if the calling thread is not the application's main thread. | | static String | checkNotEmpty(String string) | Deprecated.

Throws IllegalArgumentException if string is null or zero length. | | static String | checkNotEmpty(String string, Object errorMessage) | Deprecated.

Throws IllegalArgumentException if string is null or zero length. | | static <T> T | checkNotNull(T reference) | Deprecated.

Throws NullPointerException if reference is null. | | static <T> T | checkNotNull(T reference, Object errorMessage) | Deprecated.

Throws NullPointerException if reference is null. | | static void | checkState(boolean expression) | Deprecated.

Throws IllegalStateException if expression evaluates to false. | | static void | checkState(boolean expression, Object errorMessage) | Deprecated.

Throws IllegalStateException if expression evaluates to false. | | static <T> T | checkStateNotNull(T reference) | Deprecated.

Throws IllegalStateException if reference is null. | | static <T> T | checkStateNotNull(T reference, Object errorMessage) | Deprecated.

Throws IllegalStateException if reference is null. |

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

checkArgument

@Pure
public static void checkArgument(boolean expression)

Deprecated.

Throws IllegalArgumentException if expression evaluates to false. Parameters:expression - The expression to evaluate.Throws:IllegalArgumentException - If expression is false.

checkArgument

@Pure
public static void checkArgument(boolean expression,[Object](https://developer.android.com/reference/java/lang/Object.html "class or interface in java.lang")errorMessage)

Deprecated.

Throws IllegalArgumentException if expression evaluates to false. Parameters:expression - The expression to evaluate.errorMessage - The exception message if an exception is thrown. The message is converted to a String using String.valueOf(Object).Throws:IllegalArgumentException - If expression is false.

checkIndex

@Pure
public static int checkIndex(int index,
                             int start,
                             int limit)

Deprecated.

Throws IndexOutOfBoundsException if index falls outside the specified bounds. Parameters:index - The index to test.start - The start of the allowed range (inclusive).limit - The end of the allowed range (exclusive).Returns:The index that was validated.Throws:IndexOutOfBoundsException - If index falls outside the specified bounds.

checkState

@Pure
public static void checkState(boolean expression)

Deprecated.

Throws IllegalStateException if expression evaluates to false. Parameters:expression - The expression to evaluate.Throws:IllegalStateException - If expression is false.

checkState

@Pure
public static void checkState(boolean expression,[Object](https://developer.android.com/reference/java/lang/Object.html "class or interface in java.lang")errorMessage)

Deprecated.

Throws IllegalStateException if expression evaluates to false. Parameters:expression - The expression to evaluate.errorMessage - The exception message if an exception is thrown. The message is converted to a String using String.valueOf(Object).Throws:IllegalStateException - If expression is false.

checkStateNotNull

@EnsuresNonNull("#1")
@Pure
public static <T> T checkStateNotNull(@Nullable
                                      T reference)

Deprecated.

Throws IllegalStateException if reference is null. Type Parameters:T - The type of the reference.Parameters:reference - The reference.Returns:The non-null reference that was validated.Throws:IllegalStateException - If reference is null.

checkStateNotNull

@EnsuresNonNull("#1")
@Pure
public static <T> T checkStateNotNull(@Nullable
                                      T reference,[Object](https://developer.android.com/reference/java/lang/Object.html "class or interface in java.lang")errorMessage)

Deprecated.

Throws IllegalStateException if reference is null. Type Parameters:T - The type of the reference.Parameters:reference - The reference.errorMessage - The exception message to use if the check fails. The message is converted to a string using String.valueOf(Object).Returns:The non-null reference that was validated.Throws:IllegalStateException - If reference is null.

checkNotNull

@EnsuresNonNull("#1")
@Pure
public static <T> T checkNotNull(@Nullable
                                 T reference)

Deprecated.

Throws NullPointerException if reference is null. Type Parameters:T - The type of the reference.Parameters:reference - The reference.Returns:The non-null reference that was validated.Throws:NullPointerException - If reference is null.

checkNotNull

@EnsuresNonNull("#1")
@Pure
public static <T> T checkNotNull(@Nullable
                                 T reference,[Object](https://developer.android.com/reference/java/lang/Object.html "class or interface in java.lang")errorMessage)

Deprecated.

Throws NullPointerException if reference is null. Type Parameters:T - The type of the reference.Parameters:reference - The reference.errorMessage - The exception message to use if the check fails. The message is converted to a string using String.valueOf(Object).Returns:The non-null reference that was validated.Throws:NullPointerException - If reference is null.

checkNotEmpty

@EnsuresNonNull("#1")
@Pure
public static[String](https://developer.android.com/reference/java/lang/String.html "class or interface in java.lang")checkNotEmpty(@Nullable[String](https://developer.android.com/reference/java/lang/String.html "class or interface in java.lang")string)

Deprecated.

Throws IllegalArgumentException if string is null or zero length. Parameters:string - The string to check.Returns:The non-null, non-empty string that was validated.Throws:IllegalArgumentException - If string is null or 0-length.

checkNotEmpty

@EnsuresNonNull("#1")
@Pure
public static[String](https://developer.android.com/reference/java/lang/String.html "class or interface in java.lang")checkNotEmpty(@Nullable[String](https://developer.android.com/reference/java/lang/String.html "class or interface in java.lang")string,[Object](https://developer.android.com/reference/java/lang/Object.html "class or interface in java.lang")errorMessage)

Deprecated.

Throws IllegalArgumentException if string is null or zero length. Parameters:string - The string to check.errorMessage - The exception message to use if the check fails. The message is converted to a string using String.valueOf(Object).Returns:The non-null, non-empty string that was validated.Throws:IllegalArgumentException - If string is null or 0-length.

checkMainThread

@Pure
public static void checkMainThread()

Deprecated.

Throws IllegalStateException if the calling thread is not the application's main thread. Throws:IllegalStateException - If the calling thread is not the application's main thread.