CursorLoader

extends AsyncTaskLoader<Cursor>

java.lang.Object
↳	android.content.Loader<android.database.Cursor>
	↳	android.content.AsyncTaskLoader<android.database.Cursor>
		↳	android.content.CursorLoader

Class Overview

A loader that queries the ContentResolver and returns a Cursor. This class implements the Loader protocol in a standard way for querying cursors, building on AsyncTaskLoader to perform the cursor query on a background thread so that it does not block the application's UI.

A CursorLoader must be built with the full information for the query to perform, either through the CursorLoader(Context, Uri, String[], String, String[], String) or creating an empty instance with CursorLoader(Context) and filling in the desired paramters with setUri(Uri), setSelection(String), setSelectionArgs(String[]), setSortOrder(String), and setProjection(String[]).

Summary

Public Constructors
	CursorLoader(Context context) Creates an empty unspecified CursorLoader.
	CursorLoader(Context context, Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) Creates a fully-specified CursorLoader.

Public Methods
void	cancelLoadInBackground() Called on the main thread to abort a load in progress.
void	deliverResult(Cursor cursor) Sends the result of the load to the registered listener.
void	dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) Print the Loader's state into the given stream.
String[]	getProjection()
String	getSelection()
String[]	getSelectionArgs()
String	getSortOrder()
Uri	getUri()
Cursor	loadInBackground() Called on a worker thread to perform the actual load and to return the result of the load operation.
void	onCanceled(Cursor cursor) Called if the task was canceled before it was completed.
void	setProjection(String[] projection)
void	setSelection(String selection)
void	setSelectionArgs(String[] selectionArgs)
void	setSortOrder(String sortOrder)
void	setUri(Uri uri)

Protected Methods
void	onReset() Subclasses must implement this to take care of resetting their loader, as per `reset()`.
void	onStartLoading() Starts an asynchronous load of the contacts list data.
void	onStopLoading() Must be called from the UI thread

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Inherited Methods

From class android.content.AsyncTaskLoader

From class android.content.Loader

From class java.lang.Object

Object	clone() Creates and returns a copy of this `Object`.
boolean	equals(Object o) Compares this instance with the specified object and indicates if they are equal.
void	finalize() Invoked when the garbage collector has detected that this instance is no longer reachable.
final Class<?>	getClass() Returns the unique instance of `Class` that represents this object's class.
int	hashCode() Returns an integer hash code for this object.
final void	notify() Causes a thread which is waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up.
final void	notifyAll() Causes all threads which are waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up.
String	toString() Returns a string containing a concise, human-readable description of this object.
final void	wait() Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object.
final void	wait(long millis, int nanos) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires.
final void	wait(long millis) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires.

prefix	Text to print at the front of each line.
fd	The raw file descriptor that the dump is being sent to.
writer	A PrintWriter to which the dump is to be set.
args	Additional arguments to the dump request.

Results

Interfaces

Classes

Exceptions

CursorLoader

Class Overview

Summary

Public Constructors

public CursorLoader (Context context)

public CursorLoader (Context context, Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder)

Public Methods

public void cancelLoadInBackground ()

public void deliverResult (Cursor cursor)

Parameters

public void dump (String prefix, FileDescriptor fd, PrintWriter writer, String[] args)

Parameters

public String[] getProjection ()

public String getSelection ()

public String[] getSelectionArgs ()

public String getSortOrder ()

public Uri getUri ()

public Cursor loadInBackground ()

Returns

public void onCanceled (Cursor cursor)

Parameters

public void setProjection (String[] projection)

public void setSelection (String selection)

public void setSelectionArgs (String[] selectionArgs)

public void setSortOrder (String sortOrder)

public void setUri (Uri uri)

Protected Methods

protected void onReset ()

protected void onStartLoading ()

protected void onStopLoading ()