6월 3일의 ⁠#Android11: 베타 버전 출시 행사에 참여하세요.

# androidx.annotation

## Annotations

 AnimatorRes Denotes that an integer parameter, field or method return value is expected to be an animator resource reference (e.g. AnimRes Denotes that an integer parameter, field or method return value is expected to be an anim resource reference (e.g. AnyRes Denotes that an integer parameter, field or method return value is expected to be a resource reference of any type. AnyThread Denotes that the annotated method can be called from any thread (e.g. ArrayRes Denotes that an integer parameter, field or method return value is expected to be an array resource reference (e.g. AttrRes Denotes that an integer parameter, field or method return value is expected to be an attribute reference (e.g. BinderThread Denotes that the annotated method should only be called on the binder thread. BoolRes Denotes that an integer parameter, field or method return value is expected to be a boolean resource reference. CallSuper Denotes that any overriding methods should invoke this method as well. CheckResult Denotes that the annotated method returns a result that it typically is an error to ignore. ChecksSdkIntAtLeast Denotes that the annotated method checks if the SDK_INT API level is at least the given value, and either returns it or executes the given lambda in that case (or if it's a field, has the value true). ColorInt Denotes that the annotated element represents a packed color int, `AARRGGBB`. ColorLong Denotes that the annotated element represents a packed color long. ColorRes Denotes that an integer parameter, field or method return value is expected to be a color resource reference (e.g. ContentView Annotation that can be attached to a constructor with a single `LayoutRes` parameter to denote what layout the component intends to inflate and set as its content. DimenRes Denotes that an integer parameter, field or method return value is expected to be a dimension resource reference (e.g. Dimension Denotes that an integer parameter, field or method return value is expected to represent a dimension. DrawableRes Denotes that an integer parameter, field or method return value is expected to be a drawable resource reference (e.g. 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 Denotes that an integer parameter, field or method return value is expected to be a font resource reference (e.g. FractionRes Denotes that an integer parameter, field or method return value is expected to be a fraction resource reference. GuardedBy Denotes that the annotated method or field can only be accessed when holding the referenced lock. HalfFloat Denotes that the annotated element represents a half-precision floating point value. IdRes Denotes that an integer parameter, field or method return value is expected to be an id resource reference (e.g. InspectableProperty Denotes that the annotated method is the getter for a resources-backed property that should be shown in Android Studio's inspection tools. InspectableProperty.EnumEntry One entry in an enumeration packed into a primitive {int}. InspectableProperty.FlagEntry One flag value of many that may be packed into a primitive {int}. 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 Denotes that an integer parameter, field or method return value is expected to be an integer resource reference (e.g. InterpolatorRes Denotes that an integer parameter, field or method return value is expected to be an interpolator resource reference (e.g. 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 Denotes that the annotated element should not be removed when the code is minified at build time. LayoutRes Denotes that an integer parameter, field or method return value is expected to be a layout resource reference (e.g. LongDef Denotes that the annotated long element represents a logical type and that its value should be one of the explicitly named constants. MainThread Denotes that the annotated method should only be called on the main thread. MenuRes Denotes that an integer parameter, field or method return value is expected to be a menu resource reference. NavigationRes Denotes that an integer parameter, field or method return value is expected to be a navigation resource reference (e.g. NonNull Denotes that a parameter, field or method return value can never be null. Nullable Denotes that a parameter, field or method return value can be null. PluralsRes Denotes that an integer parameter, field or method return value is expected to be a plurals resource reference. Px Denotes that an integer parameter, field or method return value is expected to represent a pixel dimension. RawRes Denotes that an integer parameter, field or method return value is expected to be a raw resource reference. RequiresApi Denotes that the annotated element should only be called on the given API level or higher. RequiresFeature Denotes that the annotated element requires one or more features. RequiresPermission Denotes that the annotated element requires (or may require) one or more permissions. RequiresPermission.Read Specifies that the given permission is required for read operations. RequiresPermission.Write Specifies that the given permission is required for write operations. RestrictTo Denotes that the annotated element should only be accessed from within a specific scope (as defined by `RestrictTo.Scope`). Size Denotes that the annotated element should have a given size or length. StringDef Denotes that the annotated String element, represents a logical type and that its value should be one of the explicitly named constants. StringRes Denotes that an integer parameter, field or method return value is expected to be a String resource reference (e.g. StyleableRes Denotes that an integer parameter, field or method return value is expected to be a styleable resource reference (e.g. StyleRes Denotes that an integer parameter, field or method return value is expected to be a style resource reference (e.g. TransitionRes Denotes that an integer parameter, field or method return value is expected to be a transition resource reference. UiThread Denotes that the annotated method or constructor should only be called on the UI thread. 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 Denotes that the annotated method should only be called on a worker thread. XmlRes Denotes that an integer parameter, field or method return value is expected to be an XML resource reference.

## Enums

 InspectableProperty.ValueType The type of value packed into a primitive {int}. RestrictTo.Scope