ICursor Interface
Definition
Important
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This interface provides random read-write access to the result set returned by a database query.
[Android.Runtime.Register("android/database/Cursor", "", "Android.Database.ICursorInvoker")]
public interface ICursor : IDisposable, Java.Interop.IJavaPeerable, Java.IO.ICloseable[<Android.Runtime.Register("android/database/Cursor", "", "Android.Database.ICursorInvoker")>]
type ICursor = interface
interface ICloseable
interface IJavaObject
interface IDisposable
interface IJavaPeerable- Derived
- Attributes
- Implements
Remarks
This interface provides random read-write access to the result set returned by a database query.
Cursor implementations are not required to be synchronized so code using a Cursor from multiple threads should perform its own synchronization when using the Cursor.
Implementations should subclass AbstractCursor.
Java documentation for android.database.Cursor.
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
| ColumnCount |
Return total number of columns |
| Count |
Returns the numbers of rows in the cursor. |
| Extras |
Returns a bundle of extra values. |
| Handle |
Gets the JNI value of the underlying Android object. (Inherited from IJavaObject) |
| IsAfterLast |
Returns whether the cursor is pointing to the position after the last row. |
| IsBeforeFirst |
Returns whether the cursor is pointing to the position before the first row. |
| IsClosed |
return true if the cursor is closed |
| IsFirst |
Returns whether the cursor is pointing to the first row. |
| IsLast |
Returns whether the cursor is pointing to the last row. |
| JniIdentityHashCode |
Returns the value of |
| JniManagedPeerState |
State of the managed peer. (Inherited from IJavaPeerable) |
| JniPeerMembers |
Member access and invocation support. (Inherited from IJavaPeerable) |
| NotificationUri |
Return the URI at which notifications of changes in this Cursor's data will be delivered, as previously set by SetNotificationUri(ContentResolver, Uri). |
| PeerReference |
Returns a JniObjectReference of the wrapped Java object instance. (Inherited from IJavaPeerable) |
| Position |
Returns the current position of the cursor in the row set. |
| WantsAllOnMoveCalls |
onMove() will only be called across processes if this method returns true. |
Methods
| Close() |
Closes the Cursor, releasing all of its resources and making it completely invalid. |
| CopyStringToBuffer(Int32, CharArrayBuffer) |
Retrieves the requested column text and stores it in the buffer provided. |
| Deactivate() |
Obsolete.
Deactivates the Cursor, making all calls on it fail until |
| Disposed() |
Called when the instance has been disposed. (Inherited from IJavaPeerable) |
| DisposeUnlessReferenced() |
If there are no outstanding references to this instance, then
calls |
| Finalized() |
Called when the instance has been finalized. (Inherited from IJavaPeerable) |
| GetBlob(Int32) |
Returns the value of the requested column as a byte array. |
| GetColumnIndex(String) |
Returns the zero-based index for the given column name, or -1 if the column doesn't exist. |
| GetColumnIndexOrThrow(String) |
Returns the zero-based index for the given column name, or throws
|
| GetColumnName(Int32) |
Returns the column name at the given zero-based column index. |
| GetColumnNames() |
Returns a string array holding the names of all of the columns in the result set in the order in which they were listed in the result. |
| GetDouble(Int32) |
Returns the value of the requested column as a double. |
| GetFloat(Int32) |
Returns the value of the requested column as a float. |
| GetInt(Int32) |
Returns the value of the requested column as an int. |
| GetLong(Int32) |
Returns the value of the requested column as a long. |
| GetShort(Int32) |
Returns the value of the requested column as a short. |
| GetString(Int32) |
Returns the value of the requested column as a String. |
| GetType(Int32) |
Returns data type of the given column's value. |
| IsNull(Int32) |
Returns |
| Move(Int32) |
Move the cursor by a relative amount, forward or backward, from the current position. |
| MoveToFirst() |
Move the cursor to the first row. |
| MoveToLast() |
Move the cursor to the last row. |
| MoveToNext() |
Move the cursor to the next row. |
| MoveToPosition(Int32) |
Move the cursor to an absolute position. |
| MoveToPrevious() |
Move the cursor to the previous row. |
| RegisterContentObserver(ContentObserver) |
Register an observer that is called when changes happen to the content backing this cursor. |
| RegisterDataSetObserver(DataSetObserver) |
Register an observer that is called when changes happen to the contents
of the this cursors data set, for example, when the data set is changed via
|
| Requery() |
Obsolete.
Performs the query that created the cursor again, refreshing its contents. |
| Respond(Bundle) |
This is an out-of-band way for the the user of a cursor to communicate with the cursor. |
| SetJniIdentityHashCode(Int32) |
Set the value returned by |
| SetJniManagedPeerState(JniManagedPeerStates) | (Inherited from IJavaPeerable) |
| SetNotificationUri(ContentResolver, Uri) |
Register to watch a content URI for changes. |
| SetPeerReference(JniObjectReference) |
Set the value returned by |
| UnregisterContentObserver(ContentObserver) |
Unregister an observer that has previously been registered with this
cursor via |
| UnregisterDataSetObserver(DataSetObserver) |
Unregister an observer that has previously been registered with this
cursor via |
| UnregisterFromRuntime() |
Unregister this instance so that the runtime will not return it from future Java.Interop.JniRuntime+JniValueManager.PeekValue invocations. (Inherited from IJavaPeerable) |
Extension Methods
| JavaCast<TResult>(IJavaObject) |
Performs an Android runtime-checked type conversion. |
| JavaCast<TResult>(IJavaObject) | |
| GetJniTypeName(IJavaPeerable) | |