IT. Expert System.

All Implemented Interfaces:

Adapter, Filterable, ListAdapter, SpinnerAdapter

public class SimpleCursorAdapter
extends ResourceCursorAdapter

• Nested Class Summary

  Nested Classes

  Modifier and Type	Class and Description
  static interface	SimpleCursorAdapter.CursorToStringConverter This class can be used by external clients of SimpleCursorAdapter to define how the Cursor should be converted to a String.
  static interface	SimpleCursorAdapter.ViewBinder This class can be used by external clients of SimpleCursorAdapter to bind values fom the Cursor to views.

• Field Summary

  Fields

  Modifier and Type	Field and Description
  protected int[]	mFrom A list of columns containing the data to bind to the UI.
  protected int[]	mTo A list of View ids representing the views to which the data must be bound.

  • Fields inherited from class android.support.v4.widget.CursorAdapter

    FLAG_AUTO_REQUERY, FLAG_REGISTER_CONTENT_OBSERVER, mAutoRequery, mChangeObserver, mContext, mCursor, mCursorFilter, mDataSetObserver, mDataValid, mFilterQueryProvider, mRowIDColumn

  • Fields inherited from interface android.widget.Adapter

    IGNORE_ITEM_VIEW_TYPE, NO_SELECTION

• Constructor Summary

  Constructors

  Constructor and Description
  SimpleCursorAdapter(Context context, int layout, Cursor c, String[] from, int[] to) Deprecated. This option is discouraged, as it results in Cursor queries being performed on the application's UI thread and thus can cause poor responsiveness or even Application Not Responding errors. As an alternative, use LoaderManager with a CursorLoader.
  SimpleCursorAdapter(Context context, int layout, Cursor c, String[] from, int[] to, int flags) Standard constructor.

• Method Summary

  Methods

  Modifier and Type	Method and Description
  void	bindView(View view, Context context, Cursor cursor) Binds all of the field names passed into the "to" parameter of the constructor with their corresponding cursor columns as specified in the "from" parameter.
  void	changeCursorAndColumns(Cursor c, String[] from, int[] to) Change the cursor and change the column-to-view mappings at the same time.
  CharSequence	convertToString(Cursor cursor) Returns a CharSequence representation of the specified Cursor as defined by the current CursorToStringConverter.
  SimpleCursorAdapter.CursorToStringConverter	getCursorToStringConverter() Returns the converter used to convert the filtering Cursor into a String.
  int	getStringConversionColumn() Return the index of the column used to get a String representation of the Cursor.
  SimpleCursorAdapter.ViewBinder	getViewBinder() Returns the SimpleCursorAdapter.ViewBinder used to bind data to views.
  void	setCursorToStringConverter(SimpleCursorAdapter.CursorToStringConverter cursorToStringConverter) Sets the converter used to convert the filtering Cursor into a String.
  void	setStringConversionColumn(int stringConversionColumn) Defines the index of the column in the Cursor used to get a String representation of that Cursor.
  void	setViewBinder(SimpleCursorAdapter.ViewBinder viewBinder) Sets the binder used to bind data to views.
  void	setViewImage(ImageView v, String value) Called by bindView() to set the image for an ImageView but only if there is no existing ViewBinder or if the existing ViewBinder cannot handle binding to an ImageView.
  void	setViewText(TextView v, String text) Called by bindView() to set the text for a TextView but only if there is no existing ViewBinder or if the existing ViewBinder cannot handle binding to an TextView.
  Cursor	swapCursor(Cursor c) Swap in a new Cursor, returning the old Cursor.

  • Methods inherited from class android.support.v4.widget.ResourceCursorAdapter

    newDropDownView, newView, setDropDownViewResource, setViewResource

  • Methods inherited from class android.support.v4.widget.CursorAdapter

    changeCursor, getCount, getCursor, getDropDownView, getFilter, getFilterQueryProvider, getItem, getItemId, getView, hasStableIds, init, onContentChanged, runQueryOnBackgroundThread, setFilterQueryProvider

  • Methods inherited from class android.widget.BaseAdapter

    areAllItemsEnabled, getItemViewType, getViewTypeCount, isEmpty, isEnabled, notifyDataSetChanged, notifyDataSetInvalidated, registerDataSetObserver, unregisterDataSetObserver

  • Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

• Field Detail

  • mFrom

    protected int[] mFrom

    A list of columns containing the data to bind to the UI. This field should be made private, so it is hidden from the SDK.

  • mTo

    protected int[] mTo

    A list of View ids representing the views to which the data must be bound. This field should be made private, so it is hidden from the SDK.

• Constructor Detail

  • SimpleCursorAdapter

    @Deprecated
    public SimpleCursorAdapter(Context context,
                                  int layout,
                                  Cursor c,
                                  String[] from,
                                  int[] to)

    Deprecated. This option is discouraged, as it results in Cursor queries being performed on the application's UI thread and thus can cause poor responsiveness or even Application Not Responding errors. As an alternative, use LoaderManager with a CursorLoader.
    Constructor the enables auto-requery.

  • SimpleCursorAdapter

    public SimpleCursorAdapter(Context context,
                       int layout,
                       Cursor c,
                       String[] from,
                       int[] to,
                       int flags)

    Standard constructor.

    Parameters:

    context - The context where the ListView associated with this SimpleListItemFactory is running

    layout - resource identifier of a layout file that defines the views for this list item. The layout file should include at least those named views defined in "to"

    c - The database cursor. Can be null if the cursor is not available yet.

    from - A list of column names representing the data to bind to the UI. Can be null if the cursor is not available yet.

    to - The views that should display column in the "from" parameter. These should all be TextViews. The first N views in this list are given the values of the first N columns in the from parameter. Can be null if the cursor is not available yet.

    flags - Flags used to determine the behavior of the adapter, as per CursorAdapter.CursorAdapter(Context, Cursor, int).

• Method Detail

  • bindView

    public void bindView(View view,
                Context context,
                Cursor cursor)

    Binds all of the field names passed into the "to" parameter of the constructor with their corresponding cursor columns as specified in the "from" parameter. Binding occurs in two phases. First, if a SimpleCursorAdapter.ViewBinder is available, SimpleCursorAdapter.ViewBinder.setViewValue(android.view.View, android.database.Cursor, int) is invoked. If the returned value is true, binding has occured. If the returned value is false and the view to bind is a TextView, setViewText(TextView, String) is invoked. If the returned value is false and the view to bind is an ImageView, setViewImage(ImageView, String) is invoked. If no appropriate binding can be found, an IllegalStateException is thrown.

    Specified by:

    bindView in class CursorAdapter

    Parameters:

    view - Existing view, returned earlier by newView

    context - Interface to application's global information

    cursor - The cursor from which to get the data. The cursor is already moved to the correct position.

    Throws:

    IllegalStateException - if binding cannot occur

    See Also:

    CursorAdapter.bindView(android.view.View, android.content.Context, android.database.Cursor), getViewBinder(), #setViewBinder(android.widget.SimpleCursorAdapter.ViewBinder), setViewImage(ImageView, String), setViewText(TextView, String)

  • getViewBinder

    public SimpleCursorAdapter.ViewBinder getViewBinder()

    Returns the SimpleCursorAdapter.ViewBinder used to bind data to views.

    Returns:

    a ViewBinder or null if the binder does not exist

    See Also:

    bindView(android.view.View, android.content.Context, android.database.Cursor), #setViewBinder(android.widget.SimpleCursorAdapter.ViewBinder)

  • setViewBinder

    public void setViewBinder(SimpleCursorAdapter.ViewBinder viewBinder)

    Sets the binder used to bind data to views.

    Parameters:

    viewBinder - the binder used to bind data to views, can be null to remove the existing binder

    See Also:

    bindView(android.view.View, android.content.Context, android.database.Cursor), getViewBinder()

  • setViewImage

    public void setViewImage(ImageView v,
                    String value)

    Called by bindView() to set the image for an ImageView but only if there is no existing ViewBinder or if the existing ViewBinder cannot handle binding to an ImageView. By default, the value will be treated as an image resource. If the value cannot be used as an image resource, the value is used as an image Uri. Intended to be overridden by Adapters that need to filter strings retrieved from the database.

    Parameters:

    v - ImageView to receive an image

    value - the value retrieved from the cursor

  • setViewText

    public void setViewText(TextView v,
                   String text)

    Called by bindView() to set the text for a TextView but only if there is no existing ViewBinder or if the existing ViewBinder cannot handle binding to an TextView. Intended to be overridden by Adapters that need to filter strings retrieved from the database.

    Parameters:

    v - TextView to receive text

    text - the text to be set for the TextView

  • getStringConversionColumn

    public int getStringConversionColumn()

    Return the index of the column used to get a String representation of the Cursor.

    Returns:

    a valid index in the current Cursor or -1

    See Also:

    CursorAdapter.convertToString(android.database.Cursor), setStringConversionColumn(int), #setCursorToStringConverter(android.widget.SimpleCursorAdapter.CursorToStringConverter), getCursorToStringConverter()

  • setStringConversionColumn

    public void setStringConversionColumn(int stringConversionColumn)

    Defines the index of the column in the Cursor used to get a String representation of that Cursor. The column is used to convert the Cursor to a String only when the current CursorToStringConverter is null.

    Parameters:

    stringConversionColumn - a valid index in the current Cursor or -1 to use the default conversion mechanism

    See Also:

    CursorAdapter.convertToString(android.database.Cursor), getStringConversionColumn(), #setCursorToStringConverter(android.widget.SimpleCursorAdapter.CursorToStringConverter), getCursorToStringConverter()

  • getCursorToStringConverter

    public SimpleCursorAdapter.CursorToStringConverter getCursorToStringConverter()

    Returns the converter used to convert the filtering Cursor into a String.

    Returns:

    null if the converter does not exist or an instance of SimpleCursorAdapter.CursorToStringConverter

    See Also:

    #setCursorToStringConverter(android.widget.SimpleCursorAdapter.CursorToStringConverter), getStringConversionColumn(), setStringConversionColumn(int), CursorAdapter.convertToString(android.database.Cursor)

  • setCursorToStringConverter

    public void setCursorToStringConverter(SimpleCursorAdapter.CursorToStringConverter cursorToStringConverter)

    Sets the converter used to convert the filtering Cursor into a String.

    Parameters:

    cursorToStringConverter - the Cursor to String converter, or null to remove the converter

    See Also:

    #setCursorToStringConverter(android.widget.SimpleCursorAdapter.CursorToStringConverter), getStringConversionColumn(), setStringConversionColumn(int), CursorAdapter.convertToString(android.database.Cursor)

  • convertToString

    public CharSequence convertToString(Cursor cursor)

    Returns a CharSequence representation of the specified Cursor as defined by the current CursorToStringConverter. If no CursorToStringConverter has been set, the String conversion column is used instead. If the conversion column is -1, the returned String is empty if the cursor is null or Cursor.toString().

    Overrides:

    convertToString in class CursorAdapter

    Parameters:

    cursor - the Cursor to convert to a CharSequence

    Returns:

    a non-null CharSequence representing the cursor

  • swapCursor

    public Cursor swapCursor(Cursor c)

    Description copied from class: CursorAdapter
    Swap in a new Cursor, returning the old Cursor. Unlike CursorAdapter.changeCursor(Cursor), the returned old Cursor is not closed.

    Overrides:

    swapCursor in class CursorAdapter

    Parameters:

    c - The new cursor to be used.

    Returns:

    Returns the previously set Cursor, or null if there wasa not one. If the given new Cursor is the same instance is the previously set Cursor, null is also returned.

  • changeCursorAndColumns

    public void changeCursorAndColumns(Cursor c,
                              String[] from,
                              int[] to)

    Change the cursor and change the column-to-view mappings at the same time.

    Parameters:

    c - The database cursor. Can be null if the cursor is not available yet.

    from - A list of column names representing the data to bind to the UI. Can be null if the cursor is not available yet.

    to - The views that should display column in the "from" parameter. These should all be TextViews. The first N views in this list are given the values of the first N columns in the from parameter. Can be null if the cursor is not available yet.