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Android APIs
public abstract class

SimpleCursorTreeAdapter

extends ResourceCursorTreeAdapter
java.lang.Object
   ↳ android.widget.BaseExpandableListAdapter
     ↳ android.widget.CursorTreeAdapter
       ↳ android.widget.ResourceCursorTreeAdapter
         ↳ android.widget.SimpleCursorTreeAdapter

Class Overview

An easy adapter to map columns from a cursor to TextViews or ImageViews defined in an XML file. You can specify which columns you want, which views you want to display the columns, and the XML file that defines the appearance of these views. Separate XML files for child and groups are possible. Binding occurs in two phases. First, if a SimpleCursorTreeAdapter.ViewBinder is available, setViewValue(android.view.View, android.database.Cursor, int) is invoked. If the returned value is true, binding has occurred. 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.

Summary

Nested Classes
interface SimpleCursorTreeAdapter.ViewBinder This class can be used by external clients of SimpleCursorTreeAdapter to bind values from the Cursor to views. 
Public Constructors
SimpleCursorTreeAdapter ( Context context, Cursor cursor, int collapsedGroupLayout, int expandedGroupLayout, String[] groupFrom, int[] groupTo, int childLayout, int lastChildLayout, String[] childFrom, int[] childTo)
Constructor.
SimpleCursorTreeAdapter ( Context context, Cursor cursor, int collapsedGroupLayout, int expandedGroupLayout, String[] groupFrom, int[] groupTo, int childLayout, String[] childFrom, int[] childTo)
Constructor.
SimpleCursorTreeAdapter ( Context context, Cursor cursor, int groupLayout, String[] groupFrom, int[] groupTo, int childLayout, String[] childFrom, int[] childTo)
Constructor.
Public Methods
SimpleCursorTreeAdapter.ViewBinder getViewBinder ()
Returns the SimpleCursorTreeAdapter.ViewBinder used to bind data to views.
void setViewBinder ( SimpleCursorTreeAdapter.ViewBinder viewBinder)
Sets the binder used to bind data to views.
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 a TextView.
Protected Methods
void bindChildView ( View view, Context context, Cursor cursor, boolean isLastChild)
Bind an existing view to the child data pointed to by cursor
void bindGroupView ( View view, Context context, Cursor cursor, boolean isExpanded)
Bind an existing view to the group data pointed to by cursor.
void setViewImage ( ImageView v, String value)
Called by bindView() to set the image for an ImageView.
[Expand]
Inherited Methods
From class android.widget.ResourceCursorTreeAdapter
From class android.widget.CursorTreeAdapter
From class android.widget.BaseExpandableListAdapter
From class java.lang.Object
From interface android.widget.ExpandableListAdapter
From interface android.widget.Filterable
From interface android.widget.HeterogeneousExpandableList

Public Constructors

public SimpleCursorTreeAdapter ( Context context, Cursor cursor, int collapsedGroupLayout, int expandedGroupLayout, String[] groupFrom, int[] groupTo, int childLayout, int lastChildLayout, String[] childFrom, int[] childTo)

Added in API level 1

Constructor.

Parameters
context The context where the ExpandableListView associated with this SimpleCursorTreeAdapter is running
cursor The database cursor
collapsedGroupLayout The resource identifier of a layout file that defines the views for a collapsed group. The layout file should include at least those named views defined in groupTo.
expandedGroupLayout The resource identifier of a layout file that defines the views for an expanded group. The layout file should include at least those named views defined in groupTo.
groupFrom A list of column names that will be used to display the data for a group.
groupTo The group views (from the group layouts) that should display column in the "from" parameter. These should all be TextViews or ImageViews. The first N views in this list are given the values of the first N columns in the from parameter.
childLayout The resource identifier of a layout file that defines the views for a child (except the last). The layout file should include at least those named views defined in childTo.
lastChildLayout The resource identifier of a layout file that defines the views for the last child within a group. The layout file should include at least those named views defined in childTo.
childFrom A list of column names that will be used to display the data for a child.
childTo The child views (from the child layouts) that should display column in the "from" parameter. These should all be TextViews or ImageViews. The first N views in this list are given the values of the first N columns in the from parameter.

public SimpleCursorTreeAdapter ( Context context, Cursor cursor, int collapsedGroupLayout, int expandedGroupLayout, String[] groupFrom, int[] groupTo, int childLayout, String[] childFrom, int[] childTo)

Added in API level 1

Constructor.

Parameters
context The context where the ExpandableListView associated with this SimpleCursorTreeAdapter is running
cursor The database cursor
collapsedGroupLayout The resource identifier of a layout file that defines the views for a collapsed group. The layout file should include at least those named views defined in groupTo.
expandedGroupLayout The resource identifier of a layout file that defines the views for an expanded group. The layout file should include at least those named views defined in groupTo.
groupFrom A list of column names that will be used to display the data for a group.
groupTo The group views (from the group layouts) that should display column in the "from" parameter. These should all be TextViews or ImageViews. The first N views in this list are given the values of the first N columns in the from parameter.
childLayout The resource identifier of a layout file that defines the views for a child. The layout file should include at least those named views defined in childTo.
childFrom A list of column names that will be used to display the data for a child.
childTo The child views (from the child layouts) that should display column in the "from" parameter. These should all be TextViews or ImageViews. The first N views in this list are given the values of the first N columns in the from parameter.

public SimpleCursorTreeAdapter ( Context context, Cursor cursor, int groupLayout, String[] groupFrom, int[] groupTo, int childLayout, String[] childFrom, int[] childTo)

Added in API level 1

Constructor.

Parameters
context The context where the ExpandableListView associated with this SimpleCursorTreeAdapter is running
cursor The database cursor
groupLayout The resource identifier of a layout file that defines the views for a group. The layout file should include at least those named views defined in groupTo.
groupFrom A list of column names that will be used to display the data for a group.
groupTo The group views (from the group layouts) that should display column in the "from" parameter. These should all be TextViews or ImageViews. The first N views in this list are given the values of the first N columns in the from parameter.
childLayout The resource identifier of a layout file that defines the views for a child. The layout file should include at least those named views defined in childTo.
childFrom A list of column names that will be used to display the data for a child.
childTo The child views (from the child layouts) that should display column in the "from" parameter. These should all be TextViews or ImageViews. The first N views in this list are given the values of the first N columns in the from parameter.

Public Methods

public SimpleCursorTreeAdapter.ViewBinder getViewBinder ()

Added in API level 5

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

Returns
  • a ViewBinder or null if the binder does not exist
See Also

public void setViewBinder ( SimpleCursorTreeAdapter.ViewBinder viewBinder)

Added in API level 5

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

public void setViewText ( TextView v, String text)

Added in API level 5

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 a 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

Protected Methods

protected void bindChildView ( View view, Context context, Cursor cursor, boolean isLastChild)

Added in API level 1

Bind an existing view to the child data pointed to by cursor

Parameters
view Existing view, returned earlier by newChildView
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.
isLastChild Whether the child is the last child within its group.

protected void bindGroupView ( View view, Context context, Cursor cursor, boolean isExpanded)

Added in API level 1

Bind an existing view to the group data pointed to by cursor.

Parameters
view Existing view, returned earlier by newGroupView.
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.
isExpanded Whether the group is expanded.

protected void setViewImage ( ImageView v, String value)

Added in API level 1

Called by bindView() to set the image for an ImageView. By default, the value will be treated as a 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