# android.support.annotation # android.support.annotation | This package is part of the Android[support library](https://developer.android.com/topic/libraries/support-library)which is no longer maintained. The support library has been superseded by[AndroidX](https://developer.android.com/jetpack/androidx)which is part of[Jetpack](https://developer.android.com/jetpack). We recommend using the AndroidX libraries in all new projects. You should also consider[migrating](https://developer.android.com/jetpack/androidx/migrate)existing projects to AndroidX. To find the AndroidX class that maps to this deprecated class, see the AndroidX support library[class mappings](https://developer.android.com/jetpack/androidx/migrate/class-mappings). ## Annotations |-------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [AnimatorRes](https://developer.android.com/reference/android/support/annotation/AnimatorRes) | Denotes that an integer parameter, field or method return value is expected to be an animator resource reference (e.g. | | [AnimRes](https://developer.android.com/reference/android/support/annotation/AnimRes) | Denotes that an integer parameter, field or method return value is expected to be an anim resource reference (e.g. | | [AnyRes](https://developer.android.com/reference/android/support/annotation/AnyRes) | Denotes that an integer parameter, field or method return value is expected to be a resource reference of any type. | | [AnyThread](https://developer.android.com/reference/android/support/annotation/AnyThread) | Denotes that the annotated method can be called from any thread (e.g. | | [ArrayRes](https://developer.android.com/reference/android/support/annotation/ArrayRes) | Denotes that an integer parameter, field or method return value is expected to be an array resource reference (e.g. | | [AttrRes](https://developer.android.com/reference/android/support/annotation/AttrRes) | Denotes that an integer parameter, field or method return value is expected to be an attribute reference (e.g. | | [BinderThread](https://developer.android.com/reference/android/support/annotation/BinderThread) | Denotes that the annotated method should only be called on the binder thread. | | [BoolRes](https://developer.android.com/reference/android/support/annotation/BoolRes) | Denotes that an integer parameter, field or method return value is expected to be a boolean resource reference. | | [CallSuper](https://developer.android.com/reference/android/support/annotation/CallSuper) | Denotes that any overriding methods should invoke this method as well. | | [CheckResult](https://developer.android.com/reference/android/support/annotation/CheckResult) | Denotes that the annotated method returns a result that it typically is an error to ignore. | | [ColorInt](https://developer.android.com/reference/android/support/annotation/ColorInt) | Denotes that the annotated element represents a packed color int,`AARRGGBB`. | | [ColorLong](https://developer.android.com/reference/android/support/annotation/ColorLong) | Denotes that the annotated element represents a packed color long. | | [ColorRes](https://developer.android.com/reference/android/support/annotation/ColorRes) | Denotes that an integer parameter, field or method return value is expected to be a color resource reference (e.g. | | [DimenRes](https://developer.android.com/reference/android/support/annotation/DimenRes) | Denotes that an integer parameter, field or method return value is expected to be a dimension resource reference (e.g. | | [Dimension](https://developer.android.com/reference/android/support/annotation/Dimension) | Denotes that an integer parameter, field or method return value is expected to represent a dimension. | | [DrawableRes](https://developer.android.com/reference/android/support/annotation/DrawableRes) | Denotes that an integer parameter, field or method return value is expected to be a drawable resource reference (e.g. | | [FloatRange](https://developer.android.com/reference/android/support/annotation/FloatRange) | Denotes that the annotated element should be a float or double in the given range Example: @FloatRange(from=0.0,to=1.0) public float getAlpha() { ... | | [FontRes](https://developer.android.com/reference/android/support/annotation/FontRes) | Denotes that an integer parameter, field or method return value is expected to be a font resource reference (e.g. | | [FractionRes](https://developer.android.com/reference/android/support/annotation/FractionRes) | Denotes that an integer parameter, field or method return value is expected to be a fraction resource reference. | | [GuardedBy](https://developer.android.com/reference/android/support/annotation/GuardedBy) | Denotes that the annotated method or field can only be accessed when holding the referenced lock. | | [HalfFloat](https://developer.android.com/reference/android/support/annotation/HalfFloat) | Denotes that the annotated element represents a half-precision floating point value. | | [IdRes](https://developer.android.com/reference/android/support/annotation/IdRes) | Denotes that an integer parameter, field or method return value is expected to be an id resource reference (e.g. | | [IntDef](https://developer.android.com/reference/android/support/annotation/IntDef) | Denotes that the annotated element of integer type, represents a logical type and that its value should be one of the explicitly named constants. | | [IntegerRes](https://developer.android.com/reference/android/support/annotation/IntegerRes) | Denotes that an integer parameter, field or method return value is expected to be an integer resource reference (e.g. | | [InterpolatorRes](https://developer.android.com/reference/android/support/annotation/InterpolatorRes) | Denotes that an integer parameter, field or method return value is expected to be an interpolator resource reference (e.g. | | [IntRange](https://developer.android.com/reference/android/support/annotation/IntRange) | Denotes that the annotated element should be an int or long in the given range Example: @IntRange(from=0,to=255) public int getAlpha() { ... | | [Keep](https://developer.android.com/reference/android/support/annotation/Keep) | Denotes that the annotated element should not be removed when the code is minified at build time. | | [LayoutRes](https://developer.android.com/reference/android/support/annotation/LayoutRes) | Denotes that an integer parameter, field or method return value is expected to be a layout resource reference (e.g. | | [LongDef](https://developer.android.com/reference/android/support/annotation/LongDef) | Denotes that the annotated long element represents a logical type and that its value should be one of the explicitly named constants. | | [MainThread](https://developer.android.com/reference/android/support/annotation/MainThread) | Denotes that the annotated method should only be called on the main thread. | | [MenuRes](https://developer.android.com/reference/android/support/annotation/MenuRes) | Denotes that an integer parameter, field or method return value is expected to be a menu resource reference. | | [NavigationRes](https://developer.android.com/reference/android/support/annotation/NavigationRes) | Denotes that an integer parameter, field or method return value is expected to be a navigation resource reference (e.g. | | [NonNull](https://developer.android.com/reference/android/support/annotation/NonNull) | Denotes that a parameter, field or method return value can never be null. | | [Nullable](https://developer.android.com/reference/android/support/annotation/Nullable) | Denotes that a parameter, field or method return value can be null. | | [PluralsRes](https://developer.android.com/reference/android/support/annotation/PluralsRes) | Denotes that an integer parameter, field or method return value is expected to be a plurals resource reference. | | [Px](https://developer.android.com/reference/android/support/annotation/Px) | Denotes that an integer parameter, field or method return value is expected to represent a pixel dimension. | | [RawRes](https://developer.android.com/reference/android/support/annotation/RawRes) | Denotes that an integer parameter, field or method return value is expected to be a raw resource reference. | | [RequiresApi](https://developer.android.com/reference/android/support/annotation/RequiresApi) | Denotes that the annotated element should only be called on the given API level or higher. | | [RequiresPermission](https://developer.android.com/reference/android/support/annotation/RequiresPermission) | Denotes that the annotated element requires (or may require) one or more permissions. | | [RequiresPermission.Read](https://developer.android.com/reference/android/support/annotation/RequiresPermission.Read) | Specifies that the given permission is required for read operations. | | [RequiresPermission.Write](https://developer.android.com/reference/android/support/annotation/RequiresPermission.Write) | Specifies that the given permission is required for write operations. | | [RestrictTo](https://developer.android.com/reference/android/support/annotation/RestrictTo) | Denotes that the annotated element should only be accessed from within a specific scope (as defined by[RestrictTo.Scope](https://developer.android.com/reference/android/support/annotation/RestrictTo.Scope)). | | [Size](https://developer.android.com/reference/android/support/annotation/Size) | Denotes that the annotated element should have a given size or length. | | [StringDef](https://developer.android.com/reference/android/support/annotation/StringDef) | Denotes that the annotated String element, represents a logical type and that its value should be one of the explicitly named constants. | | [StringRes](https://developer.android.com/reference/android/support/annotation/StringRes) | Denotes that an integer parameter, field or method return value is expected to be a String resource reference (e.g. | | [StyleableRes](https://developer.android.com/reference/android/support/annotation/StyleableRes) | Denotes that an integer parameter, field or method return value is expected to be a styleable resource reference (e.g. | | [StyleRes](https://developer.android.com/reference/android/support/annotation/StyleRes) | Denotes that an integer parameter, field or method return value is expected to be a style resource reference (e.g. | | [TransitionRes](https://developer.android.com/reference/android/support/annotation/TransitionRes) | Denotes that an integer parameter, field or method return value is expected to be a transition resource reference. | | [UiThread](https://developer.android.com/reference/android/support/annotation/UiThread) | Denotes that the annotated method or constructor should only be called on the UI thread. | | [VisibleForTesting](https://developer.android.com/reference/android/support/annotation/VisibleForTesting) | Denotes that the class, method or field has its visibility relaxed, so that it is more widely visible than otherwise necessary to make code testable. | | [WorkerThread](https://developer.android.com/reference/android/support/annotation/WorkerThread) | Denotes that the annotated method should only be called on a worker thread. | | [XmlRes](https://developer.android.com/reference/android/support/annotation/XmlRes) | Denotes that an integer parameter, field or method return value is expected to be an XML resource reference. | ## Enums |---------------------------------------------------------------------------------------------------------|---| | [RestrictTo.Scope](https://developer.android.com/reference/android/support/annotation/RestrictTo.Scope) | | - ## Annotations - [AnimatorRes](https://developer.android.com/reference/android/support/annotation/AnimatorRes) - [AnimRes](https://developer.android.com/reference/android/support/annotation/AnimRes) - [AnyRes](https://developer.android.com/reference/android/support/annotation/AnyRes) - [AnyThread](https://developer.android.com/reference/android/support/annotation/AnyThread) - [ArrayRes](https://developer.android.com/reference/android/support/annotation/ArrayRes) - [AttrRes](https://developer.android.com/reference/android/support/annotation/AttrRes) - [BinderThread](https://developer.android.com/reference/android/support/annotation/BinderThread) - [BoolRes](https://developer.android.com/reference/android/support/annotation/BoolRes) - [CallSuper](https://developer.android.com/reference/android/support/annotation/CallSuper) - [CheckResult](https://developer.android.com/reference/android/support/annotation/CheckResult) - [ColorInt](https://developer.android.com/reference/android/support/annotation/ColorInt) - [ColorLong](https://developer.android.com/reference/android/support/annotation/ColorLong) - [ColorRes](https://developer.android.com/reference/android/support/annotation/ColorRes) - [DimenRes](https://developer.android.com/reference/android/support/annotation/DimenRes) - [Dimension](https://developer.android.com/reference/android/support/annotation/Dimension) - [DrawableRes](https://developer.android.com/reference/android/support/annotation/DrawableRes) - [FloatRange](https://developer.android.com/reference/android/support/annotation/FloatRange) - [FontRes](https://developer.android.com/reference/android/support/annotation/FontRes) - [FractionRes](https://developer.android.com/reference/android/support/annotation/FractionRes) - [GuardedBy](https://developer.android.com/reference/android/support/annotation/GuardedBy) - [HalfFloat](https://developer.android.com/reference/android/support/annotation/HalfFloat) - [IdRes](https://developer.android.com/reference/android/support/annotation/IdRes) - [IntDef](https://developer.android.com/reference/android/support/annotation/IntDef) - [IntegerRes](https://developer.android.com/reference/android/support/annotation/IntegerRes) - [InterpolatorRes](https://developer.android.com/reference/android/support/annotation/InterpolatorRes) - [IntRange](https://developer.android.com/reference/android/support/annotation/IntRange) - [Keep](https://developer.android.com/reference/android/support/annotation/Keep) - [LayoutRes](https://developer.android.com/reference/android/support/annotation/LayoutRes) - [LongDef](https://developer.android.com/reference/android/support/annotation/LongDef) - [MainThread](https://developer.android.com/reference/android/support/annotation/MainThread) - [MenuRes](https://developer.android.com/reference/android/support/annotation/MenuRes) - [NavigationRes](https://developer.android.com/reference/android/support/annotation/NavigationRes) - [NonNull](https://developer.android.com/reference/android/support/annotation/NonNull) - [Nullable](https://developer.android.com/reference/android/support/annotation/Nullable) - [PluralsRes](https://developer.android.com/reference/android/support/annotation/PluralsRes) - [Px](https://developer.android.com/reference/android/support/annotation/Px) - [RawRes](https://developer.android.com/reference/android/support/annotation/RawRes) - [RequiresApi](https://developer.android.com/reference/android/support/annotation/RequiresApi) - [RequiresPermission](https://developer.android.com/reference/android/support/annotation/RequiresPermission) - [RequiresPermission.Read](https://developer.android.com/reference/android/support/annotation/RequiresPermission.Read) - [RequiresPermission.Write](https://developer.android.com/reference/android/support/annotation/RequiresPermission.Write) - [RestrictTo](https://developer.android.com/reference/android/support/annotation/RestrictTo) - [Size](https://developer.android.com/reference/android/support/annotation/Size) - [StringDef](https://developer.android.com/reference/android/support/annotation/StringDef) - [StringRes](https://developer.android.com/reference/android/support/annotation/StringRes) - [StyleableRes](https://developer.android.com/reference/android/support/annotation/StyleableRes) - [StyleRes](https://developer.android.com/reference/android/support/annotation/StyleRes) - [TransitionRes](https://developer.android.com/reference/android/support/annotation/TransitionRes) - [UiThread](https://developer.android.com/reference/android/support/annotation/UiThread) - [VisibleForTesting](https://developer.android.com/reference/android/support/annotation/VisibleForTesting) - [WorkerThread](https://developer.android.com/reference/android/support/annotation/WorkerThread) - [XmlRes](https://developer.android.com/reference/android/support/annotation/XmlRes) - ## Enums - [RestrictTo.Scope](https://developer.android.com/reference/android/support/annotation/RestrictTo.Scope)