DynamicDrawableSpan Class
Definition
Important
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Span that replaces the text it's attached to with a Drawable that can be aligned with
the bottom or with the baseline of the surrounding text.
[Android.Runtime.Register("android/text/style/DynamicDrawableSpan", DoNotGenerateAcw=true)]
public abstract class DynamicDrawableSpan : Android.Text.Style.ReplacementSpan[<Android.Runtime.Register("android/text/style/DynamicDrawableSpan", DoNotGenerateAcw=true)>]
type DynamicDrawableSpan = class
inherit ReplacementSpan- Inheritance
- Derived
- Attributes
Remarks
Span that replaces the text it's attached to with a Drawable that can be aligned with the bottom or with the baseline of the surrounding text.
For an implementation that constructs the drawable from various sources (Bitmap, Drawable, resource id or Uri) use ImageSpan.
A simple implementation of DynamicDrawableSpan that uses drawables from resources looks like this:
class MyDynamicDrawableSpan extends DynamicDrawableSpan {
private final Context mContext;
private final int mResourceId;
public MyDynamicDrawableSpan(Context context, @DrawableRes int resourceId) {
mContext = context;
mResourceId = resourceId;
}
{@literal @}Override
public Drawable getDrawable() {
Drawable drawable = mContext.getDrawable(mResourceId);
drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight());
return drawable;
}
}
The class can be used like this:
SpannableString string = new SpannableString("Text with a drawable span");
string.setSpan(new MyDynamicDrawableSpan(context, R.mipmap.ic_launcher), 12, 20, Spanned
.SPAN_EXCLUSIVE_EXCLUSIVE);
<img src="https://developer.android.com/reference/android/images/text/style/dynamicdrawablespan.png" /> <figcaption>Replacing text with a drawable.</figcaption>
Java documentation for android.text.style.DynamicDrawableSpan.
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
| Name | Description |
|---|---|
| DynamicDrawableSpan() |
Creates a |
| DynamicDrawableSpan(Int32) |
Creates a |
| DynamicDrawableSpan(IntPtr, JniHandleOwnership) |
A constructor used when creating managed representations of JNI objects; called by the runtime. |
Properties
| Name | Description |
|---|---|
| Class |
Returns the runtime class of this |
| ContentDescription |
Gets a brief description of this ReplacementSpan for use in accessibility support. (Inherited from ReplacementSpan) |
| ContentDescriptionFormatted |
Gets a brief description of this ReplacementSpan for use in accessibility support. -or- Sets the specific content description into ReplacementSpan. (Inherited from ReplacementSpan) |
| Drawable |
Your subclass must implement this method to provide the bitmap |
| Handle |
The handle to the underlying Android instance. (Inherited from Object) |
| JniIdentityHashCode |
Gets the identity hash code assigned to this Java peer by the interop runtime. (Inherited from Object) |
| JniManagedPeerState | (Inherited from JavaObject) |
| JniPeerMembers | |
| MVerticalAlignment | |
| PeerReference |
Gets the JNI object reference for this Java peer. (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. |
| Underlying |
Returns "this" for most CharacterStyles, but for CharacterStyles
that were generated by |
| VerticalAlignment |
Returns the vertical alignment of this span, one of |
Methods
| Name | Description |
|---|---|
| Clone() |
Creates and returns a copy of this object. (Inherited from Object) |
| Construct(JniObjectReference, JniObjectReferenceOptions) | (Inherited from JavaObject) |
| Dispose() |
Releases the resources held by this Java peer. (Inherited from Object) |
| Dispose(Boolean) |
Releases the resources held by this Java peer. (Inherited from Object) |
| DisposeUnlessReferenced() | (Inherited from JavaObject) |
| Draw(Canvas, ICharSequence, Int32, Int32, Single, Int32, Int32, Int32, Paint) | |
| Draw(Canvas, String, Int32, Int32, Single, Int32, Int32, Int32, Paint) |
Draws the span into the canvas. (Inherited from ReplacementSpan) |
| Equals(Object) | (Inherited from JavaObject) |
| Equals(Object) |
Indicates whether some other object is "equal to" this one. (Inherited from Object) |
| GetHashCode() |
Returns a hash code value for the object. (Inherited from Object) |
| GetSize(Paint, ICharSequence, Int32, Int32, Paint+FontMetricsInt) | |
| GetSize(Paint, String, Int32, Int32, Paint+FontMetricsInt) |
Returns the width of the span. (Inherited from ReplacementSpan) |
| 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) |
| 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) |
| SetHandle(IntPtr, JniHandleOwnership) |
Sets the Handle property. (Inherited from Object) |
| SetPeerReference(JniObjectReference, JniObjectReferenceOptions) | (Inherited from JavaObject) |
| ToArray<T>() |
Creates a managed array from this Java array wrapper. (Inherited from Object) |
| ToString() |
Returns a string representation of the object. (Inherited from Object) |
| UnregisterFromRuntime() |
Unregisters this Java peer from the interop runtime. (Inherited from Object) |
| UpdateDrawState(TextPaint) |
This method does nothing, since ReplacementSpans are drawn explicitly instead of affecting Paint properties. (Inherited from ReplacementSpan) |
| UpdateMeasureState(TextPaint) |
This method does nothing, since ReplacementSpans are measured explicitly instead of affecting Paint properties. (Inherited from ReplacementSpan) |
| 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
| Name | Description |
|---|---|
| IJavaPeerable.Disposed() | (Inherited from JavaObject) |
| IJavaPeerable.Finalized() | (Inherited from JavaObject) |
| IJavaPeerable.JniObjectReferenceControlBlock | (Inherited from JavaObject) |
| IJavaPeerable.SetJniIdentityHashCode(Int32) | (Inherited from JavaObject) |
| IJavaPeerable.SetJniManagedPeerState(JniManagedPeerStates) | (Inherited from JavaObject) |
| IJavaPeerable.SetPeerReference(JniObjectReference) | (Inherited from JavaObject) |
| IJavaPeerable.UnregisterFromRuntime() | (Inherited from MetricAffectingSpan) |
Extension Methods
| Name | Description |
|---|---|
| GetJniTypeName(IJavaPeerable) |
Gets the JNI name of the type of the instance |
| JavaAs<TResult>(IJavaPeerable) |
Try to coerce |
| JavaCast<TResult>(IJavaObject) |
Performs an Android runtime-checked type conversion. |
| JavaCast<TResult>(IJavaObject) | |
| TryJavaCast<TResult>(IJavaPeerable, TResult) |
Try to coerce |