BitmapRegionDecoder Class
Definition
Important
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BitmapRegionDecoder can be used to decode a rectangle region from an image.
[Android.Runtime.Register("android/graphics/BitmapRegionDecoder", DoNotGenerateAcw=true)]
public sealed class BitmapRegionDecoder : Java.Lang.Object[<Android.Runtime.Register("android/graphics/BitmapRegionDecoder", DoNotGenerateAcw=true)>]
type BitmapRegionDecoder = class
inherit Object- Inheritance
- Attributes
Remarks
BitmapRegionDecoder can be used to decode a rectangle region from an image. BitmapRegionDecoder is particularly useful when an original image is large and you only need parts of the image.
To create a BitmapRegionDecoder, call newInstance(...). Given a BitmapRegionDecoder, users can call decodeRegion() repeatedly to get a decoded Bitmap of the specified region.
Java documentation for android.graphics.BitmapRegionDecoder.
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.
Properties
| Class |
Returns the runtime class of this |
| Handle |
The handle to the underlying Android instance. (Inherited from Object) |
| Height |
Returns the original image's height |
| IsRecycled |
Returns true if this region decoder has been recycled. |
| JniIdentityHashCode | (Inherited from Object) |
| JniPeerMembers | |
| PeerReference | (Inherited from Object) |
| ThresholdClass |
This API supports the Mono for Android infrastructure and is not intended to be used directly from your code. (Inherited from Object) |
| ThresholdType |
This API supports the Mono for Android infrastructure and is not intended to be used directly from your code. (Inherited from Object) |
| Width |
Returns the original image's width |
Methods
| Clone() |
Creates and returns a copy of this object. (Inherited from Object) |
| DecodeRegion(Rect, BitmapFactory+Options) |
Decodes a rectangle region in the image specified by rect. |
| Dispose() | (Inherited from Object) |
| Dispose(Boolean) | (Inherited from Object) |
| 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) |
| 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) |
| NewInstance(Byte[], Int32, Int32, Boolean) |
Create a BitmapRegionDecoder from the specified byte array. |
| NewInstance(Byte[], Int32, Int32) |
Create a BitmapRegionDecoder from the specified byte array. |
| NewInstance(FileDescriptor, Boolean) |
Create a BitmapRegionDecoder from the file descriptor. |
| NewInstance(ParcelFileDescriptor) |
Create a BitmapRegionDecoder from the file descriptor. |
| NewInstance(Stream, Boolean) |
Create a BitmapRegionDecoder from an input stream. |
| NewInstance(Stream) |
Create a BitmapRegionDecoder from an input stream. |
| NewInstance(String, Boolean) |
Create a BitmapRegionDecoder from a file path. |
| NewInstance(String) |
Create a BitmapRegionDecoder from a file path. |
| 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) |
| Recycle() |
Frees up the memory associated with this region decoder, and mark the region decoder as "dead", meaning it will throw an exception if decodeRegion(), getWidth() or getHeight() is called. |
| SetHandle(IntPtr, JniHandleOwnership) |
Sets the Handle property. (Inherited from Object) |
| ToArray<T>() | (Inherited from Object) |
| ToString() |
Returns a string representation of the object. (Inherited from Object) |
| UnregisterFromRuntime() | (Inherited from Object) |
| 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) | |