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| java.lang.Object | ||
| ↳ | android.view.animation.LayoutAnimationController | |
| ↳ | android.view.animation.GridLayoutAnimationController | |
A layout animation controller is used to animated a grid layout's children.
While LayoutAnimationController relies only on the index of the child
in the view group to compute the animation delay, this class uses both the
X and Y coordinates of the child within a grid.
In addition, the animation direction can be controlled. The default direction
is DIRECTION_LEFT_TO_RIGHT | DIRECTION_TOP_TO_BOTTOM. You can
also set the animation priority to columns or rows. The default priority is
none.
Information used to compute the animation delay of each child are stored
in an instance of
GridLayoutAnimationController.AnimationParameters,
itself stored in the ViewGroup.LayoutParams of the view.
| Nested Classes | |||||||||||
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| GridLayoutAnimationController.AnimationParameters | The set of parameters that has to be attached to each view contained in the view group animated by the grid layout animation controller. | ||||||||||
| XML Attributes | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| android:columnDelay | Fraction of the animation duration used to delay the beginning of the animation of each column. | ||||||||||
| android:direction | Direction of the animation in the grid. | ||||||||||
| android:directionPriority | Priority of the rows and columns. | ||||||||||
| android:rowDelay | Fraction of the animation duration used to delay the beginning of the animation of each row. | ||||||||||
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Inherited XML Attributes | |||||||||||
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 From class
android.view.animation.LayoutAnimationController
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| Constants | |||||||||||
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| int | DIRECTION_BOTTOM_TO_TOP | Animates the children starting from the bottom of the grid to the top. | |||||||||
| int | DIRECTION_HORIZONTAL_MASK | Bitmask used to retrieve the horizontal component of the direction. | |||||||||
| int | DIRECTION_LEFT_TO_RIGHT | Animates the children starting from the left of the grid to the right. | |||||||||
| int | DIRECTION_RIGHT_TO_LEFT | Animates the children starting from the right of the grid to the left. | |||||||||
| int | DIRECTION_TOP_TO_BOTTOM | Animates the children starting from the top of the grid to the bottom. | |||||||||
| int | DIRECTION_VERTICAL_MASK | Bitmask used to retrieve the vertical component of the direction. | |||||||||
| int | PRIORITY_COLUMN | Columns are animated first. | |||||||||
| int | PRIORITY_NONE | Rows and columns are animated at the same time. | |||||||||
| int | PRIORITY_ROW | Rows are animated first. | |||||||||
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Inherited Constants | |||||||||||
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From class
android.view.animation.LayoutAnimationController
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Inherited Fields | |||||||||||
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From class
android.view.animation.LayoutAnimationController
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| Public Constructors | |||||||||||
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Creates a new grid layout animation controller from external resources.
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Creates a new layout animation controller with a delay of 50%
for both rows and columns and the specified animation.
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Creates a new layout animation controller with the specified delays
and the specified animation.
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| Public Methods | |||||||||||
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Returns the delay by which the children's animation are offset from one
column to the other.
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Returns the direction of the animation.
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Returns the direction priority for the animation.
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Returns the delay by which the children's animation are offset from one
row to the other.
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Sets the delay, as a fraction of the animation duration, by which the
children's animations are offset from one column to the other.
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Sets the direction of the animation.
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Specifies the direction priority of the animation.
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Sets the delay, as a fraction of the animation duration, by which the
children's animations are offset from one row to the other.
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Indicates whether two children's animations will overlap.
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| Protected Methods | |||||||||||
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Returns the amount of milliseconds by which the specified view's
animation must be delayed or offset.
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Inherited Methods | |||||||||||
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From class
android.view.animation.LayoutAnimationController
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From class
java.lang.Object
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Fraction of the animation duration used to delay the beginning of the animation of each column.
May be a floating point value, such as "1.2".
May be a fractional value, which is a floating point number appended with either % or %p, such as "14.5%".
The % suffix always means a percentage of the base size; the optional %p suffix provides a size relative to
some parent container.
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 columnDelay.
Direction of the animation in the grid.
Must be one or more (separated by '|') of the following constant values.
| Constant | Value | Description |
|---|---|---|
left_to_right | 0x0 | Animates columns from left to right. |
right_to_left | 0x1 | Animates columns from right to left. |
top_to_bottom | 0x0 | Animates rows from top to bottom. |
bottom_to_top | 0x2 | Animates rows from bottom to top. |
This corresponds to the global attribute
resource symbol direction.
Priority of the rows and columns. When the priority is none, both rows and columns have the same priority. When the priority is column, the animations will be applied on the columns first. The same goes for rows.
Must be one of the following constant values.
| Constant | Value | Description |
|---|---|---|
none | 0 | Rows and columns are animated at the same time. |
column | 1 | Columns are animated first. |
row | 2 | Rows are animated first. |
This corresponds to the global attribute
resource symbol directionPriority.
Fraction of the animation duration used to delay the beginning of the animation of each row.
May be a floating point value, such as "1.2".
May be a fractional value, which is a floating point number appended with either % or %p, such as "14.5%".
The % suffix always means a percentage of the base size; the optional %p suffix provides a size relative to
some parent container.
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 rowDelay.
Animates the children starting from the bottom of the grid to the top.
Bitmask used to retrieve the horizontal component of the direction.
Animates the children starting from the left of the grid to the right.
Animates the children starting from the right of the grid to the left.
Animates the children starting from the top of the grid to the bottom.
Bitmask used to retrieve the vertical component of the direction.
Columns are animated first.
Rows and columns are animated at the same time.
Rows are animated first.
Creates a new grid layout animation controller from external resources.
| context | the Context the view group is running in, through which it can access the resources |
|---|---|
| attrs | the attributes of the XML tag that is inflating the layout animation controller |
Creates a new layout animation controller with a delay of 50% for both rows and columns and the specified animation.
| animation | the animation to use on each child of the view group |
|---|
Creates a new layout animation controller with the specified delays and the specified animation.
| animation | the animation to use on each child of the view group |
|---|---|
| columnDelay | the delay by which each column animation must be offset |
| rowDelay | the delay by which each row animation must be offset |
Returns the delay by which the children's animation are offset from one column to the other. The delay is expressed as a fraction of the animation duration.
Returns the direction of the animation. DIRECTION_HORIZONTAL_MASK
and DIRECTION_VERTICAL_MASK can be used to retrieve the
horizontal and vertical components of the direction.
Returns the direction priority for the animation. The priority can
be either PRIORITY_NONE, PRIORITY_COLUMN or
PRIORITY_ROW.
Returns the delay by which the children's animation are offset from one row to the other. The delay is expressed as a fraction of the animation duration.
Sets the delay, as a fraction of the animation duration, by which the children's animations are offset from one column to the other.
| columnDelay | a fraction of the animation duration |
|---|
Sets the direction of the animation. The direction is expressed as an
integer containing a horizontal and vertical component. For instance,
DIRECTION_BOTTOM_TO_TOP | DIRECTION_RIGHT_TO_LEFT.
| direction | the direction of the animation |
|---|
Specifies the direction priority of the animation. For instance,
PRIORITY_COLUMN will give priority to columns: the animation
will first play on the column, then on the rows.Z
| directionPriority | the direction priority of the animation |
|---|
Sets the delay, as a fraction of the animation duration, by which the children's animations are offset from one row to the other.
| rowDelay | a fraction of the animation duration |
|---|
Indicates whether two children's animations will overlap. Animations overlap when the delay is lower than 100% (or 1.0).
Returns the amount of milliseconds by which the specified view's
animation must be delayed or offset. Subclasses should override this
method to return a suitable value.
This implementation returns child animation delay
milliseconds where:
child animation delay = child index * delayThe index is retrieved from the
LayoutAnimationController.AnimationParameters
found in the view's ViewGroup.LayoutParams.
| view | the view for which to obtain the animation's delay |
|---|