TableRow


public class TableRow
extends LinearLayout

java.lang.Object
   ↳ android.view.View
     ↳ android.view.ViewGroup
       ↳ android.widget.LinearLayout
         ↳ android.widget.TableRow


A layout that arranges its children horizontally. A TableRow should always be used as a child of a TableLayout. If a TableRow's parent is not a TableLayout, the TableRow will behave as an horizontal LinearLayout.

The children of a TableRow do not need to specify the layout_width and layout_height attributes in the XML file. TableRow always enforces those values to be respectively ViewGroup.LayoutParams.MATCH_PARENT and ViewGroup.LayoutParams.WRAP_CONTENT.

Also see android.widget.TableRow.LayoutParams for layout attributes

Summary

Nested classes

class TableRow.LayoutParams

Set of layout parameters used in table rows. 

Inherited XML attributes

Inherited constants

Inherited fields

Public constructors

TableRow(Context context)

Creates a new TableRow for the given context.

TableRow(Context context, AttributeSet attrs)

Creates a new TableRow for the given context and with the specified set attributes.

Public methods

TableRow.LayoutParams generateLayoutParams(AttributeSet attrs)

Returns a new set of layout parameters based on the supplied attributes set.

CharSequence getAccessibilityClassName()

Return the class name of this object to be used for accessibility purposes.

View getVirtualChildAt(int i)

int getVirtualChildCount()

void setOnHierarchyChangeListener(ViewGroup.OnHierarchyChangeListener listener)

Register a callback to be invoked when a child is added to or removed from this view.

Protected methods

boolean checkLayoutParams(ViewGroup.LayoutParams p)

LinearLayout.LayoutParams generateDefaultLayoutParams()

Returns a set of layout parameters with a width of ViewGroup.LayoutParams.MATCH_PARENT, a height of ViewGroup.LayoutParams.WRAP_CONTENT and no spanning.

LinearLayout.LayoutParams generateLayoutParams(ViewGroup.LayoutParams p)

Returns a safe set of layout parameters based on the supplied layout params.

void onLayout(boolean changed, int l, int t, int r, int b)

Called from layout when this view should assign a size and position to each of its children.

void onMeasure(int widthMeasureSpec, int heightMeasureSpec)

Measure the view and its content to determine the measured width and the measured height.

Inherited methods

Public constructors

TableRow

Added in API level 1
public TableRow (Context context)

Creates a new TableRow for the given context.

Parameters
context Context: the application environment

TableRow

Added in API level 1
public TableRow (Context context, 
                AttributeSet attrs)

Creates a new TableRow for the given context and with the specified set attributes.

Parameters
context Context: the application environment

attrs AttributeSet: a collection of attributes

Public methods

generateLayoutParams

Added in API level 1
public TableRow.LayoutParams generateLayoutParams (AttributeSet attrs)

Returns a new set of layout parameters based on the supplied attributes set.

Parameters
attrs AttributeSet: the attributes to build the layout parameters from

Returns
TableRow.LayoutParams an instance of ViewGroup.LayoutParams or one of its descendants

getAccessibilityClassName

Added in API level 23
public CharSequence getAccessibilityClassName ()

Return the class name of this object to be used for accessibility purposes. Subclasses should only override this if they are implementing something that should be seen as a completely new class of view when used by accessibility, unrelated to the class it is deriving from. This is used to fill in AccessibilityNodeInfo.setClassName.

Returns
CharSequence

getVirtualChildAt

Added in API level 1
public View getVirtualChildAt (int i)

Parameters
i int

Returns
View

getVirtualChildCount

Added in API level 1
public int getVirtualChildCount ()

Returns
int

setOnHierarchyChangeListener

Added in API level 1
public void setOnHierarchyChangeListener (ViewGroup.OnHierarchyChangeListener listener)

Register a callback to be invoked when a child is added to or removed from this view.

Parameters
listener ViewGroup.OnHierarchyChangeListener: the callback to invoke on hierarchy change

Protected methods

checkLayoutParams

Added in API level 1
protected boolean checkLayoutParams (ViewGroup.LayoutParams p)

Parameters
p ViewGroup.LayoutParams

Returns
boolean

generateDefaultLayoutParams

Added in API level 1
protected LinearLayout.LayoutParams generateDefaultLayoutParams ()

Returns a set of layout parameters with a width of ViewGroup.LayoutParams.MATCH_PARENT, a height of ViewGroup.LayoutParams.WRAP_CONTENT and no spanning.

Returns
LinearLayout.LayoutParams a set of default layout parameters or null

generateLayoutParams

Added in API level 1
protected LinearLayout.LayoutParams generateLayoutParams (ViewGroup.LayoutParams p)

Returns a safe set of layout parameters based on the supplied layout params. When a ViewGroup is passed a View whose layout params do not pass the test of checkLayoutParams(android.view.ViewGroup.LayoutParams), this method is invoked. This method should return a new set of layout params suitable for this ViewGroup, possibly by copying the appropriate attributes from the specified set of layout params.

Parameters
p ViewGroup.LayoutParams: The layout parameters to convert into a suitable set of layout parameters for this ViewGroup.

Returns
LinearLayout.LayoutParams an instance of ViewGroup.LayoutParams or one of its descendants

onLayout

Added in API level 1
protected void onLayout (boolean changed, 
                int l, 
                int t, 
                int r, 
                int b)

Called from layout when this view should assign a size and position to each of its children. Derived classes with children should override this method and call layout on each of their children.

Parameters
changed boolean: This is a new size or position for this view

l int: Left position, relative to parent

t int: Top position, relative to parent

r int: Right position, relative to parent

b int: Bottom position, relative to parent

onMeasure

Added in API level 1
protected void onMeasure (int widthMeasureSpec, 
                int heightMeasureSpec)

Measure the view and its content to determine the measured width and the measured height. This method is invoked by measure(int, int) and should be overridden by subclasses to provide accurate and efficient measurement of their contents.

CONTRACT: When overriding this method, you must call setMeasuredDimension(int, int) to store the measured width and height of this view. Failure to do so will trigger an IllegalStateException, thrown by measure(int, int). Calling the superclass' onMeasure(int, int) is a valid use.

The base class implementation of measure defaults to the background size, unless a larger size is allowed by the MeasureSpec. Subclasses should override onMeasure(int, int) to provide better measurements of their content.

If this method is overridden, it is the subclass's responsibility to make sure the measured height and width are at least the view's minimum height and width (getSuggestedMinimumHeight() and getSuggestedMinimumWidth()).

Parameters
widthMeasureSpec int: horizontal space requirements as imposed by the parent. The requirements are encoded with View.MeasureSpec.

heightMeasureSpec int: vertical space requirements as imposed by the parent. The requirements are encoded with View.MeasureSpec.