java.lang.Object | |||||
android.view.View | Drawable.Callback KeyEvent.Callback | ||||
android.view.ViewGroup | ViewManager ViewParent | ||||
android.widget.LinearLayout | |||||
android.widget.TableLayout |
A layout that arranges its children into rows and columns. A TableLayout consists of a number of TableRow objects, each defining a row (actually, you can have other children, which will be explained below). TableLayout containers do not display border lines for their rows, columns, or cells. Each row has zero or more cells; each cell can hold one View object. The table has as many columns as the row with the most cells. A table can leave cells empty. Cells can span columns, as they can in HTML.
The width of a column is defined by the row with the widest cell in that column. However, a TableLayout can specify certain columns as shrinkable or stretchable by calling setColumnShrinkable() or setColumnStretchable(). If marked as shrinkable, the column width can be shrunk to fit the table into its parent object. If marked as stretchable, it can expand in width to fit any extra space. The total width of the table is defined by its parent container. It is important to remember that a column can be both shrinkable and stretchable. In such a situation, the column will change its size to always use up the available space, but never more. Finally, you can hide a column by calling setColumnCollapsed().
The children of a TableLayout cannot specify the layout_width
attribute. Width is always FILL_PARENT
. However, the
layout_height
attribute can be defined by a child; default value
is WRAP_CONTENT. If the child
is a TableRow, then the height is always
WRAP_CONTENT.
Cells must be added to a row in increasing column order, both in Java and XML. Column numbers are zero-based. If you don't specify a column number for a child cell, it will autoincrement to the next available column. If you skip a column number, it will be considered an empty cell in that row. See the TableLayout examples in ApiDemos for examples of creating tables in XML.
Although the typical child of a TableLayout is a TableRow, you can actually use any View subclass as a direct child of TableLayout. The View will be displayed as a single row that spans all the table columns.
TableLayout.LayoutParams | This set of layout parameters enforces the width of each child to be FILL_PARENT and the height of each child to be WRAP_CONTENT, but only if the height is not specified. |
Attribute name | Related methods | |
---|---|---|
android:collapseColumns | setColumnCollapsed(int,boolean) |
The 0 based index of the columns to collapse. |
android:shrinkColumns | setShrinkAllColumns(boolean) |
The 0 based index of the columns to shrink. |
android:stretchColumns | setStretchAllColumns(boolean) |
The 0 based index of the columns to stretch. |
TableLayout(Context context) | ||||||
Creates a new TableLayout for the given context. |
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TableLayout(Context context, AttributeSet attrs) | ||||||
Creates a new TableLayout for the given context and with the specified set attributes. |
void | addView(View child, ViewGroup.LayoutParams params) | |||||
Adds a child view with the specified layout parameters. | ||||||
void | addView(View child, int index, ViewGroup.LayoutParams params) | |||||
Adds a child view with the specified layout parameters. | ||||||
void | addView(View child) | |||||
Adds a child view. | ||||||
void | addView(View child, int index) | |||||
Adds a child view. | ||||||
TableLayout.LayoutParams | generateLayoutParams(AttributeSet attrs) | |||||
Returns a new set of layout parameters based on the supplied attributes set. | ||||||
boolean | isColumnCollapsed(int columnIndex) | |||||
Returns the collapsed state of the specified column. |
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boolean | isColumnShrinkable(int columnIndex) | |||||
Returns whether the specified column is shrinkable or not. |
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boolean | isColumnStretchable(int columnIndex) | |||||
Returns whether the specified column is stretchable or not. |
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boolean | isShrinkAllColumns() | |||||
Indicates whether all columns are shrinkable or not. |
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boolean | isStretchAllColumns() | |||||
Indicates whether all columns are stretchable or not. |
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void | requestLayout() | |||||
Call this when something has changed which has invalidated the layout of this view. | ||||||
void | setColumnCollapsed(int columnIndex, boolean isCollapsed) | |||||
Collapses or restores a given column. |
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void | setColumnShrinkable(int columnIndex, boolean isShrinkable) | |||||
Makes the given column shrinkable or not. |
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void | setColumnStretchable(int columnIndex, boolean isStretchable) | |||||
Makes the given column stretchable or not. |
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void | setOnHierarchyChangeListener(ViewGroup.OnHierarchyChangeListener listener) | |||||
Register a callback to be invoked when a child is added to or removed from this view. | ||||||
void | setShrinkAllColumns(boolean shrinkAllColumns) | |||||
Convenience method to mark all columns as shrinkable. |
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void | setStretchAllColumns(boolean stretchAllColumns) | |||||
Convenience method to mark all columns as stretchable. |
boolean | checkLayoutParams(ViewGroup.LayoutParams p) | |||||
LinearLayout.LayoutParams | generateDefaultLayoutParams() | |||||
Returns a set of layout parameters with a width of FILL_PARENT, and a height of WRAP_CONTENT. | ||||||
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. |
Must be a string value, using '\\;' to escape characters such as '\\n' or '\\uxxxx' for a unicode character.
This may also be a reference to a resource (in the form
"@[package:]type:name
") or
theme attribute (in the form
"?[package:][type:]name
")
containing a value of this type.
This corresponds to the global attribute resource symbol collapseColumns.
Must be a string value, using '\\;' to escape characters such as '\\n' or '\\uxxxx' for a unicode character.
This may also be a reference to a resource (in the form
"@[package:]type:name
") or
theme attribute (in the form
"?[package:][type:]name
")
containing a value of this type.
This corresponds to the global attribute resource symbol shrinkColumns.
Must be a string value, using '\\;' to escape characters such as '\\n' or '\\uxxxx' for a unicode character.
This may also be a reference to a resource (in the form
"@[package:]type:name
") or
theme attribute (in the form
"?[package:][type:]name
")
containing a value of this type.
This corresponds to the global attribute resource symbol stretchColumns.
Creates a new TableLayout for the given context.
context | the application environment |
---|
Creates a new TableLayout for the given context and with the specified set attributes.
context | the application environment |
---|---|
attrs | a collection of attributes |
child | the child view to add |
---|---|
params | the layout parameters to set on the child |
child | the child view to add |
---|---|
index | the position at which to add the child |
params | the layout parameters to set on the child |
child | the child view to add |
---|
child | the child view to add |
---|---|
index | the position at which to add the child |
attrs | the attributes to build the layout parameters from |
---|
Returns the collapsed state of the specified column.
columnIndex | the index of the column |
---|
Returns whether the specified column is shrinkable or not.
columnIndex | the index of the column |
---|
Returns whether the specified column is stretchable or not.
columnIndex | the index of the column |
---|
Indicates whether all columns are shrinkable or not.
Indicates whether all columns are stretchable or not.
Collapses or restores a given column. When collapsed, a column does not appear on screen and the extra space is reclaimed by the other columns. A column is collapsed/restored only when it belongs to a TableRow.
Calling this method requests a layout operation.
columnIndex | the index of the column |
---|---|
isCollapsed | true if the column must be collapsed, false otherwise |
Makes the given column shrinkable or not. When a row is too wide, the table can reclaim extra space from shrinkable columns.
Calling this method requests a layout operation.
columnIndex | the index of the column |
---|---|
isShrinkable | true if the column must be shrinkable, false otherwise. Default is false. |
Makes the given column stretchable or not. When stretchable, a column takes up as much as available space as possible in its row.
Calling this method requests a layout operation.
columnIndex | the index of the column |
---|---|
isStretchable | true if the column must be stretchable, false otherwise. Default is false. |
listener | the callback to invoke on hierarchy change |
---|
Convenience method to mark all columns as shrinkable.
shrinkAllColumns | true to mark all columns shrinkable |
---|
Convenience method to mark all columns as stretchable.
stretchAllColumns | true to mark all columns stretchable |
---|
p | The layout parameters to convert into a suitable set of layout parameters for this ViewGroup. |
---|
changed | This is a new size or position for this view |
---|---|
l | Left position, relative to parent |
t | Top position, relative to parent |
r | Right position, relative to parent |
b | Bottom position, relative to parent |
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 overriden 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()).
widthMeasureSpec | horizontal space requirements as imposed by the parent. The requirements are encoded with View.MeasureSpec. |
---|---|
heightMeasureSpec | vertical space requirements as imposed by the parent. The requirements are encoded with View.MeasureSpec. |
Copyright 2007 Google Inc. | Build 0.9_r1-98467 - 14 Aug 2008 18:56 |