LevelListDrawable Class

Reference

Definition

Namespace:: Android.Graphics.Drawables

Assembly:: Mono.Android.dll

Important

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A resource that manages a number of alternate Drawables, each assigned a maximum numerical value.

[Android.Runtime.Register("android/graphics/drawable/LevelListDrawable", DoNotGenerateAcw=true)]
public class LevelListDrawable : Android.Graphics.Drawables.DrawableContainer

[<Android.Runtime.Register("android/graphics/drawable/LevelListDrawable", DoNotGenerateAcw=true)>]
type LevelListDrawable = class
    inherit DrawableContainer

Inheritance: Object

Object

Drawable

DrawableContainer
LevelListDrawable

Attributes: RegisterAttribute

Remarks

A resource that manages a number of alternate Drawables, each assigned a maximum numerical value. Setting the level value of the object with #setLevel(int) will load the image with the next greater or equal value assigned to its max attribute. A good example use of a LevelListDrawable would be a battery level indicator icon, with different images to indicate the current battery level.

It can be defined in an XML file with the <level-list> element. Each Drawable level is defined in a nested <item>. For example:

&lt;level-list xmlns:android="http://schemas.android.com/apk/res/android">
             &lt;item android:maxLevel="0" android:drawable="@drawable/ic_wifi_signal_1" />
             &lt;item android:maxLevel="1" android:drawable="@drawable/ic_wifi_signal_2" />
             &lt;item android:maxLevel="2" android:drawable="@drawable/ic_wifi_signal_3" />
             &lt;item android:maxLevel="3" android:drawable="@drawable/ic_wifi_signal_4" />
            &lt;/level-list>

With this XML saved into the res/drawable/ folder of the project, it can be referenced as the drawable for an android.widget.ImageView. The default image is the first in the list. It can then be changed to one of the other levels with android.widget.ImageView#setImageLevel(int). For more information, see the guide to Drawable Resources.

Java documentation for android.graphics.drawable.LevelListDrawable.

Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.

Constructors

LevelListDrawable()
LevelListDrawable(IntPtr, JniHandleOwnership)	A constructor used when creating managed representations of JNI objects; called by the runtime.

Properties

Alpha	Gets the current alpha value for the drawable. (Inherited from Drawable)
AutoMirrored	Tells if this Drawable will be automatically mirrored when its layout direction is RTL right-to-left. -or- Set whether this Drawable is automatically mirrored when its layout direction is RTL (right-to left). (Inherited from Drawable)
Bounds	Return the drawable's bounds Rect. -or- Specify a bounding rectangle for the Drawable. (Inherited from Drawable)
Callback	Return the current `Callback` implementation attached to this Drawable. (Inherited from Drawable)
ChangingConfigurations	Return a mask of the configuration parameters for which this drawable may change, requiring that it be re-created. -or- Set a mask of the configuration parameters for which this drawable may change, requiring that it be re-created. (Inherited from Drawable)
Class	Returns the runtime class of this `Object`. (Inherited from Object)
ColorFilter	Returns the current color filter, or `null` if none set. (Inherited from Drawable)
Current	(Inherited from Drawable)
DirtyBounds	Return the drawable's dirty bounds Rect. (Inherited from Drawable)
Handle	The handle to the underlying Android instance. (Inherited from Object)
HasFocusStateSpecified	Indicates whether this drawable has at least one state spec explicitly specifying `android.R.attr#state_focused`. (Inherited from Drawable)
IntrinsicHeight	Returns the drawable's intrinsic height. (Inherited from Drawable)
IntrinsicWidth	Returns the drawable's intrinsic width. (Inherited from Drawable)
IsFilterBitmap	(Inherited from Drawable)
IsProjected	Whether this drawable requests projection. (Inherited from Drawable)
IsStateful	Indicates whether this drawable will change its appearance based on state. (Inherited from Drawable)
IsVisible	(Inherited from Drawable)
JniIdentityHashCode	(Inherited from Object)
JniPeerMembers
LayoutDirection	Returns the resolved layout direction for this Drawable. (Inherited from Drawable)
Level	Retrieve the current level. (Inherited from Drawable)
MinimumHeight	Returns the minimum height suggested by this Drawable. (Inherited from Drawable)
MinimumWidth	Returns the minimum width suggested by this Drawable. (Inherited from Drawable)
Opacity	Return the opacity/transparency of this Drawable. (Inherited from DrawableContainer)
OpticalInsets	Return in insets the layout insets suggested by this Drawable for use with alignment operations during layout. (Inherited from Drawable)
PeerReference	(Inherited from Object)
ThresholdClass	This API supports the Mono for Android infrastructure and is not intended to be used directly from your code.
ThresholdType	This API supports the Mono for Android infrastructure and is not intended to be used directly from your code.
TransparentRegion	Returns a Region representing the part of the Drawable that is completely transparent. (Inherited from Drawable)

Methods

AddLevel(Int32, Int32, Drawable)
ApplyTheme(Resources+Theme)	Applies the specified theme to this Drawable and its children. (Inherited from Drawable)
CanApplyTheme()	(Inherited from Drawable)
ClearColorFilter()	Removes the color filter for this drawable. (Inherited from Drawable)
Clone()	Creates and returns a copy of this object. (Inherited from Object)
CopyBounds()	Return a copy of the drawable's bounds in a new Rect. (Inherited from Drawable)
CopyBounds(Rect)	Return a copy of the drawable's bounds in the specified Rect (allocated by the caller). (Inherited from Drawable)
Dispose()	(Inherited from Object)
Dispose(Boolean)	(Inherited from Object)
Draw(Canvas)	Draw in its bounds (set via setBounds) respecting optional effects such as alpha (set via setAlpha) and color filter (set via setColorFilter). (Inherited from DrawableContainer)
Equals(Object)	Indicates whether some other object is "equal to" this one. (Inherited from Object)
GetConstantState()	Return a `ConstantState` instance that holds the shared state of this Drawable. (Inherited from Drawable)
GetHashCode()	Returns a hash code value for the object. (Inherited from Object)
GetHotspotBounds(Rect)	Populates `outRect` with the hotspot bounds. (Inherited from Drawable)
GetOutline(Outline)	Called to get the drawable to populate the Outline that defines its drawing area. (Inherited from Drawable)
GetPadding(Rect)	Return in padding the insets suggested by this Drawable for placing content inside the drawable's bounds. (Inherited from Drawable)
GetState()	Describes the current state, as a union of primitve states, such as `android.R.attr#state_focused`, `android.R.attr#state_selected`, etc. (Inherited from Drawable)
Inflate(Resources, XmlReader, IAttributeSet, Resources+Theme)	Inflate this Drawable from an XML resource. (Inherited from Drawable)
Inflate(Resources, XmlReader, IAttributeSet)	Inflate this Drawable from an XML resource. (Inherited from Drawable)
InflateAsync(Resources, XmlReader, IAttributeSet, Resources+Theme)	(Inherited from Drawable)
InflateAsync(Resources, XmlReader, IAttributeSet)	(Inherited from Drawable)
InvalidateDrawable(Drawable)	Called when the drawable needs to be redrawn. (Inherited from DrawableContainer)
InvalidateSelf()	Use the current `Callback` implementation to have this Drawable redrawn. (Inherited from Drawable)
JavaFinalize()	Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. (Inherited from Object)
JumpToCurrentState()	If this Drawable does transition animations between states, ask that it immediately jump to the current state and skip any active animations. (Inherited from Drawable)
Mutate()	Make this drawable mutable. (Inherited from Drawable)
Notify()	Wakes up a single thread that is waiting on this object's monitor. (Inherited from Object)
NotifyAll()	Wakes up all threads that are waiting on this object's monitor. (Inherited from Object)
OnBoundsChange(Rect)	Override this in your subclass to change appearance if you vary based on the bounds. (Inherited from Drawable)
OnLayoutDirectionChanged(Int32)	Called when the drawable's resolved layout direction changes. (Inherited from Drawable)
OnLevelChange(Int32)	Override this in your subclass to change appearance if you vary based on level. (Inherited from Drawable)
OnStateChange(Int32[])	Override this in your subclass to change appearance if you recognize the specified state. (Inherited from Drawable)
ScheduleDrawable(Drawable, Action, Int64)	(Inherited from DrawableContainer)
ScheduleDrawable(Drawable, IRunnable, Int64)	A Drawable can call this to schedule the next frame of its animation. (Inherited from DrawableContainer)
ScheduleSelf(Action, Int64)	(Inherited from Drawable)
ScheduleSelf(IRunnable, Int64)	Use the current `Callback` implementation to have this Drawable scheduled. (Inherited from Drawable)
SelectDrawable(Int32)	Sets the currently displayed drawable by index. (Inherited from DrawableContainer)
SetAlpha(Int32)	Specify an alpha value for the drawable. 0 means fully transparent, and 255 means fully opaque. (Inherited from DrawableContainer)
SetBounds(Int32, Int32, Int32, Int32)	Specify a bounding rectangle for the Drawable. (Inherited from Drawable)
SetCallback(Drawable+ICallback)	Bind a `Callback` object to this Drawable. (Inherited from Drawable)
SetColorFilter(Color, PorterDuff+Mode)	Specify a color and Porter-Duff mode to be the color filter for this drawable. (Inherited from Drawable)
SetColorFilter(ColorFilter)	Specify an optional color filter for the drawable. (Inherited from DrawableContainer)
SetConstantState(DrawableContainer+DrawableContainerState)	(Inherited from DrawableContainer)
SetDither(Boolean)	Set to true to have the drawable dither its colors when drawn to a device with fewer than 8-bits per color component. (Inherited from Drawable)
SetEnterFadeDuration(Int32)	Change the global fade duration when a new drawable is entering the scene. (Inherited from DrawableContainer)
SetExitFadeDuration(Int32)	Change the global fade duration when a new drawable is leaving the scene. (Inherited from DrawableContainer)
SetFilterBitmap(Boolean)	Set to true to have the drawable filter its bitmaps with bilinear sampling when they are scaled or rotated. (Inherited from Drawable)
SetHandle(IntPtr, JniHandleOwnership)	Sets the Handle property. (Inherited from Object)
SetHotspot(Single, Single)	Specifies the hotspot's location within the drawable. (Inherited from Drawable)
SetHotspotBounds(Int32, Int32, Int32, Int32)	Sets the bounds to which the hotspot is constrained, if they should be different from the drawable bounds. (Inherited from Drawable)
SetLayoutDirection(LayoutDirection)	Set the layout direction for this drawable. (Inherited from Drawable)
SetLevel(Int32)	Specify the level for the drawable. (Inherited from Drawable)
SetState(Int32[])	Specify a set of states for the drawable. (Inherited from Drawable)
SetTint(Int32)	Specifies tint color for this drawable. (Inherited from Drawable)
SetTintBlendMode(BlendMode)	Specifies a tint blending mode for this drawable. (Inherited from Drawable)
SetTintList(ColorStateList)	Specifies tint color for this drawable as a color state list. (Inherited from Drawable)
SetTintMode(PorterDuff+Mode)	Specifies a tint blending mode for this drawable. (Inherited from Drawable)
SetVisible(Boolean, Boolean)	Set whether this Drawable is visible. (Inherited from Drawable)
ToArray<T>()	(Inherited from Object)
ToString()	Returns a string representation of the object. (Inherited from Object)
UnregisterFromRuntime()	(Inherited from Object)
UnscheduleDrawable(Drawable, Action)	(Inherited from DrawableContainer)
UnscheduleDrawable(Drawable, IRunnable)	A Drawable can call this to unschedule an action previously scheduled with Drawable.ICallback. (Inherited from DrawableContainer)
UnscheduleSelf(Action)	(Inherited from Drawable)
UnscheduleSelf(IRunnable)	Use the current `Callback` implementation to have this Drawable unscheduled. (Inherited from Drawable)
Wait()	Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>. (Inherited from Object)
Wait(Int64, Int32)	Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed. (Inherited from Object)
Wait(Int64)	Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed. (Inherited from Object)

Explicit Interface Implementations

IJavaPeerable.Disposed()	(Inherited from Object)
IJavaPeerable.DisposeUnlessReferenced()	(Inherited from Object)
IJavaPeerable.Finalized()	(Inherited from Object)
IJavaPeerable.JniManagedPeerState	(Inherited from Object)
IJavaPeerable.SetJniIdentityHashCode(Int32)	(Inherited from Object)
IJavaPeerable.SetJniManagedPeerState(JniManagedPeerStates)	(Inherited from Object)
IJavaPeerable.SetPeerReference(JniObjectReference)	(Inherited from Object)

Extension Methods

JavaCast<TResult>(IJavaObject)	Performs an Android runtime-checked type conversion.
JavaCast<TResult>(IJavaObject)
GetJniTypeName(IJavaPeerable)

Applies to

次の方法で共有