MemoryFile Class
Definition
Important
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MemoryFile is a wrapper for SharedMemory which can optionally be set to purgeable.
[Android.Runtime.Register("android/os/MemoryFile", DoNotGenerateAcw=true)]
public class MemoryFile : Java.Lang.Object[<Android.Runtime.Register("android/os/MemoryFile", DoNotGenerateAcw=true)>]
type MemoryFile = class
inherit Object- Inheritance
- Attributes
Remarks
MemoryFile is a wrapper for SharedMemory which can optionally be set to purgeable.
Applications should generally prefer to use SharedMemory which offers more flexible access & control over the shared memory region than MemoryFile does.
Purgeable files may have their contents reclaimed by the kernel in low memory conditions (only if allowPurging is set to true). After a file is purged, attempts to read or write the file will cause an IOException to be thrown.
Java documentation for android.os.MemoryFile.
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
| MemoryFile(IntPtr, JniHandleOwnership) |
A constructor used when creating managed representations of JNI objects; called by the runtime. |
| MemoryFile(String, Int32) |
Allocates a new ashmem region. |
Properties
| Class |
Returns the runtime class of this |
| Handle |
The handle to the underlying Android instance. (Inherited from Object) |
| InputStream |
Creates a new InputStream for reading from the memory file. |
| IsPurgingAllowed |
Is memory file purging enabled? |
| JniIdentityHashCode | (Inherited from Object) |
| JniPeerMembers | |
| OutputStream |
Creates a new OutputStream for writing to the memory file. |
| 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. |
Methods
| AllowPurging(Boolean) |
Enables or disables purging of the memory file. |
| Clone() |
Creates and returns a copy of this object. (Inherited from Object) |
| Close() |
Closes the memory file. |
| 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) |
| Length() |
Returns the length of the memory file. |
| 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) |
| ReadBytes(Byte[], Int32, Int32, Int32) |
Reads bytes from the memory file. |
| 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) |
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, 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) |
| WriteBytes(Byte[], Int32, Int32, Int32) |
Write bytes to the memory file. |
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) | |