# Titanium.UI.iOS.Toolbar
An iOS toolbar, which can contain buttons and certain other controls.
DEPRECATED SINCE 6.2.0
Use the cross-platform Titanium.UI.Toolbar instead.
# Overview
A Toolbar
is created by the Titanium.UI.iOS.createToolbar factory method or <Toolbar>
Alloy element.
A Toolbar
can contain buttons, as well as certain other widgets, including text fields and
labels.
To provide spacing between items in the toolbar, you can use the special iOS system button types, Titanium.UI.iOS.SystemButton.FIXED_SPACE and Titanium.UI.iOS.SystemButton.FLEXIBLE_SPACE.
Note that toolbars are positioned like other views (using the top
and bottom
properties,
for example), but the iOS Human Interface Guidelines (opens new window)
have specific requirements for placing toolbars, specifically:
- On iPhone, a toolbar should be at the bottom of the window.
- On the iPad, a toolbar should appear at the top or bottom of a window.
Due to an iOS limitation, the buttons in the toolbar only support the click
event.
The native object underlying a toolbar button does not generate standard view events,
such as touchstart
and touchend
.
Note: This API has been deprecated in Titanium SDK 6.2.0 in favor of the cross-platform UI component Titanium.UI.Toolbar that can also be used on Android. The API itself did not change, so it is a drop-in replacement for existing usages. This deprecated API will be removed in Titanium SDK 8.0.0 and later.
See also:
# Examples
# Simple Toolbar
The following code excerpt creates a simple toolbar, placed at the bottom of the window.
var win = Ti.UI.createWindow({
backgroundColor: 'white'
});
var send = Ti.UI.createButton({
title: 'Send',
style: Ti.UI.iOS.SystemButtonStyle.DONE,
});
var camera = Ti.UI.createButton({
systemButton: Ti.UI.iOS.SystemButton.CAMERA,
});
var cancel = Ti.UI.createButton({
systemButton: Ti.UI.iOS.SystemButton.CANCEL
});
var flexSpace = Ti.UI.createButton({
systemButton: Ti.UI.iOS.SystemButton.FLEXIBLE_SPACE
});
var toolbar = Titanium.UI.iOS.createToolbar({
items: [send, flexSpace, camera, flexSpace, cancel],
bottom: 0
});
win.add(toolbar);
win.open();
Note the use of the flexible space for positioning the toolbar buttons -- the
FLEXIBLE_SPACE
button doesn't appear as a button, but a variable space between the
controls on either side of it. Available space in the toolbar is divided between all of the
flexible space buttons in the toolbar. Without the flexible spaces in this example,
the toolbar buttons would be grouped tightly together on the left side of the toolbar.
# Toolbar with extended background
The following code excerpt creates a simple toolbar, placed at the top of the window which extends its background under the status bar.
var win = Ti.UI.createWindow({
backgroundColor: 'white'
});
var send = Ti.UI.createButton({
title: 'Send',
style: Ti.UI.iOS.SystemButtonStyle.DONE,
});
var camera = Ti.UI.createButton({
systemButton: Ti.UI.iOS.SystemButton.CAMERA,
});
var cancel = Ti.UI.createButton({
systemButton: Ti.UI.iOS.SystemButton.CANCEL
});
flexSpace = Ti.UI.createButton({
systemButton: Ti.UI.iOS.SystemButton.FLEXIBLE_SPACE
});
var toolbar = Ti.UI.iOS.createToolbar({
items: [send, flexSpace, camera, flexSpace, cancel],
top: 20,
extendBackground: true
});
win.add(toolbar);
win.open();
# Alloy XML Markup
Simple Toolbar example as an Alloy view.
<Alloy>
<Window id="win">
<Toolbar platform="ios" bottom="0">
<!-- The Items tag sets the Toolbar.items property. -->
<Items>
<Button id="send" title="Send" style="DONE" />
<FlexSpace/>
<Button id="camera" systemButton="CAMERA" />
<FlexSpace/>
<Button id="cancel" systemButton="CANCEL" />
</Items>
<!-- Place additional views for the Toolbar here -->
</Toolbar>
</Window>
</Alloy>
# Properties
Whether the view should be "hidden" from (i.e., ignored by) the accessibility service.
On iOS this is a direct analog of the accessibilityElementsHidden
property defined in the
UIAccessibility
Protocol.
On Android, setting accessibilityHidden
calls the native
View.setImportantForAccessibility
method. The native method is only available in Android 4.1 (API level 16/Jelly Bean) and
later; if this property is specified on earlier versions of Android, it is ignored.
Default: false
# accessibilityHint
Briefly describes what performing an action (such as a click) on the view will do.
On iOS this is a direct analog of the accessibilityHint
property defined in the
UIAccessibility Protocol.
On Android, it is concatenated together with
accessibilityLabel and accessibilityValue in the order: accessibilityLabel
,
accessibilityValue
, accessibilityHint
. The concatenated value is then passed as the
argument to the native View.setContentDescription method.
Default: null
# accessibilityLabel
A succint label identifying the view for the device's accessibility service.
On iOS this is a direct analog of the accessibilityLabel
property defined in the
UIAccessibility Protocol.
On Android, it is concatenated together with
accessibilityValue and accessibilityHint in the order: accessibilityLabel
,
accessibilityValue
, accessibilityHint
. The concatenated value is then passed as the
argument to the native View.setContentDescription method.
Defaults to Title or label of the control.
# accessibilityValue
A string describing the value (if any) of the view for the device's accessibility service.
On iOS this is a direct analog of the accessibilityValue
property defined in the
UIAccessibility Protocol.
On Android, it is concatenated together with
accessibilityLabel and accessibilityHint in the order: accessibilityLabel
,
accessibilityValue
, accessibilityHint
. The concatenated value is then passed as the
argument to the native View.setContentDescription method.
Defaults to State or value of the control.
# anchorPoint
Coordinate of the view about which to pivot an animation.
Used on iOS only. For Android, use anchorPoint.
Anchor point is specified as a fraction of the view's size. For example, {0, 0}
is at
the view's top-left corner, {0.5, 0.5}
at its center and {1, 1}
at its bottom-right
corner.
See the "Using an anchorPoint" example in Titanium.UI.Animation for a demonstration. The default is center of this view.
# apiName READONLY
The name of the API that this proxy corresponds to.
The value of this property is the fully qualified name of the API. For example, Titanium.UI.Button
returns Ti.UI.Button
.
# backgroundGradient
A background gradient for the view.
A gradient can be defined as either linear or radial. A linear gradient varies continuously
along a line between the startPoint
and endPoint
.
A radial gradient is interpolated between two circles, defined by startPoint
and
startRadius
and endPoint
and endRadius
respectively.
The start points, end points and radius values can be defined in device units, in the view's coordinates, or as percentages of the view's size. Thus, if a view is 60 x 60, the center point of the view can be specified as:
{ x: 30, y: 30 }
Or:
{ x: '50%', y: '50%' }
When specifying multiple colors, you can specify an offset value for each color, defining how far into the gradient it takes effect. For example, the following color array specifies a gradient that goes from red to blue back to red:
colors: [ { color: 'red', offset: 0.0}, { color: 'blue', offset: 0.25 }, { color: 'red', offset: 1.0 } ]
Android's linear gradients ignores backfillStart
and backfillEnd
, treating them as if
they are true. Android's radial gradients ignore the endPoint
property.
Defaults to no gradient.
# backgroundImage
Background image for the view, specified as a local file path or URL.
Default behavior when backgroundImage
is unspecified depends on the type of view and the platform.
For generic views, no image is used. For most controls (buttons, textfields, and so on), platform-specific default images are used.
# barColor
Background color for the toolbar, as a color name or hex triplet.
To use a background image on the toolbar, either barColor
must be a fully or
partially transparent color,
or the translucent property must be true
.
To use a background gradient on a toolbar, barColor
must be 'transparent'
and the the translucent property must be true
.
For information about color values, see the "Colors" section of Titanium.UI.
# borderColor
Border color of the view, as a color name or hex triplet.
For information about color values, see the "Colors" section of Titanium.UI.
Defaults to the normal background color of this view (Android), black (iOS).
# borderRadius
Radius for the rounded corners of the view's border.
Each corner is rounded using an arc of a circle.
Values for each corner can be specified. For example, '20px 20px' will set both left and right corners to 20px
.
Specifying '20px 20px 20px 20px' will set top-left, top-right, bottom-right and bottom-left corners in that order.
If you have issues with dark artifacts on Android you can try to disable Hardware acceleration by setting a
backgroundColor
with a small amount of transparency: backgroundColor:"rgba(255,255,255,254)"
.
Default: 0
# borderWidth
Border width of the view.
If borderColor is set without borderWidth, this value will be changed to 1 of the unit declared as 'ti.ui.defaultunit' in tiapp.xml descriptor.
Default: 0
# bottom
View's bottom position, in platform-specific units.
This position is relative to the view's parent. Exact interpretation depends on the parent view's layout property. Can be either a float value or a dimension string (for example, '50%' or '10px').
This is an input property for specifying where the view should be positioned, and does not represent the view's calculated position.
Defaults to undefined
.
# bubbleParent
Indicates if the proxy will bubble an event to its parent.
Some proxies (most commonly views) have a relationship to other proxies, often established by the add() method. For example, for a button added to a window, a click event on the button would bubble up to the window. Other common parents are table sections to their rows, table views to their sections, and scrollable views to their views. Set this property to false to disable the bubbling to the proxy's parent.
Default: true
# center
View's center position, in the parent view's coordinates.
This is an input property for specifying where the view should be positioned, and does not represent the view's calculated position.
Defaults to undefined
.
# clipMode
View's clipping behavior.
Setting this to CLIP_MODE_ENABLED enforces all child views to be clipped to this views bounds. Setting this to CLIP_MODE_DISABLED allows child views to be drawn outside the bounds of this view. When set to CLIP_MODE_DEFAULT or when this property is not set, clipping behavior is inferred. See section on iOS Clipping Behavior in Titanium.UI.View.
Defaults to undefined
. Behaves as if set to CLIP_MODE_DEFAULT.
# extendBackground CREATION ONLY
If true
, the background of the toolbar extends upwards.
This property allows the user to specify that the toolbar's background show through the status bar. This property is only intended to be used with toolbars hosted in windows with no navigation controllers. The toolbar must be placed at the top of the screen just below the status bar for this property to work as expected. This must be specified at creation.
Default: Undefined. Behaves as if set to false.
# height
View height, in platform-specific units.
Defaults to: If undefined, defaults to either FILL or SIZE depending on the view. See "View Types and Default Layout Behavior" in Transitioning to the New UI Layout System.
Can be either a float value or a dimension string (for example, '50%' or '40dp'). Can also be one of the following special values:
- SIZE. The view should size itself to fit its contents.
- FILL. The view should size itself to fill its parent.
- 'auto'. Represents the default sizing behavior for a given type of
view. The use of 'auto' is deprecated, and should be replaced with the
SIZE
orFILL
constants if it is necessary to set the view's behavior explicitly.
This is an input property for specifying the view's height dimension. To determine the view's size once rendered, use the rect or size properties.
# horizontalMotionEffect
Adds a horizontal parallax effect to the view
Note that the parallax effect only happens by tilting the device so results can not be seen on Simulator. To clear all motion effects, use the <Titanium.UI.clearMotionEffects> method.
# horizontalWrap
Determines whether the layout has wrapping behavior.
For more information, see the discussion of horizontal layout mode in the description of the layout property.
Default: true
# id
View's identifier.
The id
property of the Ti.UI.View represents the view's identifier. The identifier string does
not have to be unique. You can use this property with getViewById method.
# items
An array of buttons (or other widgets) contained in the toolbar.
# left
View's left position, in platform-specific units.
This position is relative to the view's parent. Exact interpretation depends on the parent view's layout property. Can be either a float value or a dimension string (for example, '50%' or '10px').
This is an input property for specifying where the view should be positioned, and does not represent the view's calculated position.
Defaults to undefined
.
# opacity
Opacity of this view, from 0.0 (transparent) to 1.0 (opaque). Defaults to 1.0 (opaque).
# previewContext
The preview context used in the 3D-Touch feature "Peek and Pop".
Preview context to present the "Peek and Pop" of a view. Use an configured instance of Titanium.UI.iOS.PreviewContext here.
Note: This property can only be used on devices running iOS9 or later and supporting 3D-Touch. It is ignored on older devices and can manually be checked using forceTouchSupported.
# pullBackgroundColor
Background color of the wrapper view when this view is used as either pullView or headerPullView.
Defaults to undefined
. Results in a light grey background color on the wrapper view.
# rect READONLY
The bounding box of the view relative to its parent, in system units.
The view's bounding box is defined by its size and position.
The view's size is rect.width
x rect.height
. The view's top-left position relative to
its parent is (rect.x
, rect.y
).
On Android it will also return rect.absoluteX
and 'rect.absoluteY' which are relative to
the main window.
The correct values will only be available when layout is complete. To determine when layout is complete, add a listener for the postlayout event.
# right
View's right position, in platform-specific units.
This position is relative to the view's parent. Exact interpretation depends on the parent view's layout property. Can be either a float value or a dimension string (for example, '50%' or '10px').
This is an input property for specifying where the view should be positioned, and does not represent the view's calculated position.
Defaults to undefined
.
# rotation
Clockwise 2D rotation of the view in degrees.
Translation values are applied to the static post layout value.
# size READONLY
The size of the view in system units.
Although property returns a Dimension dictionary, only the width
and height
properties are valid. The position properties--x
and y
--are always 0.
To find the position and size of the view, use the rect property instead.
The correct values will only be available when layout is complete. To determine when layout is complete, add a listener for the postlayout event.
# tintColor
The view's tintColor
This property is a direct correspondant of the tintColor property of UIView on iOS. If no value is specified, the tintColor of the View is inherited from its superview.
Default: null
# tooltip
The default text to display in the control's tooltip.
Assigning a value to this property causes the tool tip to be displayed for the view.
Setting the property to null
cancels the display of the tool tip for the view.
Note: This property is only used for apps targeting macOS Catalyst.
# top
The view's top position.
This position is relative to the view's parent. Exact interpretation depends on the parent view's layout property. Can be either a float value or a dimension string (for example, '50%' or '10px').
This is an input property for specifying where the view should be positioned, and does not represent the view's calculated position.
# touchEnabled
Determines whether view should receive touch events.
If false, will forward the events to peers.
Default: true
# transform
Transformation matrix to apply to the view.
Android only supports Matrix2D transforms.
Default: Identity matrix
# translucent
If true
, a translucent background color is used for the toolbar.
Note that if translucent
is false
, views under the toolbar are hidden, even
if barColor is set to a semi-transparent or
transparent color.
Default: true
# verticalMotionEffect
Adds a vertical parallax effect to the view
Note that the parallax effect only happens by tilting the device so results can not be seen on Simulator. To clear all motion effects, use the <Titanium.UI.clearMotionEffects> method.
# viewShadowColor
Determines the color of the shadow.
iOS Defaults to undefined
. Behaves as if transparent. Android default is black.
On Android you can set <item name="android:ambientShadowAlpha">0.5</item>
and
<item name="android:spotShadowAlpha">0.5</item>
in your theme to change the
opacity.
# viewShadowOffset
Determines the offset for the shadow of the view.
Defaults to undefined
. Behaves as if set to (0,-3)
# viewShadowRadius
Determines the blur radius used to create the shadow.
Defaults to undefined
. Behaves as if set to 3. Accepts density units as of 10.0.1.
# width
View's width, in platform-specific units.
Defaults to: If undefined, defaults to either FILL or SIZE depending on the view. See "View Types and Default Layout Behavior" in Transitioning to the New UI Layout System.
Can be either a float value or a dimension string (for example, '50%' or '40dp'). Can also be one of the following special values:
- SIZE. The view should size itself to fit its contents.
- FILL. The view should size itself to fill its parent.
- 'auto'. Represents the default sizing behavior for a given type of
view. The use of 'auto' is deprecated, and should be replaced with the
SIZE
orFILL
constants if it is necessary to set the view's behavior explicitly.
This is an input property for specifying the view's width dimension. To determine the view's size once rendered, use the rect or size properties.
# zIndex
Z-index stack order position, relative to other sibling views.
A view does not have a default z-index value, meaning that it is undefined by default. When this property is explicitly set, regardless of its value, it causes the view to be positioned in front of any sibling that has an undefined z-index.
Defaults to undefined
.
# Methods
# addEventListener
Adds the specified callback as an event listener for the named event.
Parameters
Name | Type | Description |
---|---|---|
name | String | Name of the event. |
callback | Callback<Titanium.Event> | Callback function to invoke when the event is fired. |
Returns
- Type
- void
# animate
Animates this view.
The Titanium.UI.Animation object or dictionary passed to this method defines the end state for the animation, the duration of the animation, and other properties.
Note that on SDKs older than 9.1.0 - if you use animate
to move a view, the view's actual position is changed, but
its layout properties, such as top
, left
, center
and so on are not changed--these
reflect the original values set by the user, not the actual position of the view.
As of SDK 9.1.0, the final values of the animation will be set on the view just before the complete
event and/or the callback is fired.
The rect property can be used to determine the actual size and position of the view.
Parameters
Name | Type | Description |
---|---|---|
animation | Titanium.UI.Animation | Dictionary<Titanium.UI.Animation> | Either a dictionary of animation properties or an Titanium.UI.Animation object. |
callback | Callback<Object> | Function to be invoked upon completion of the animation. |
Returns
- Type
- void
# applyProperties
Applies the properties to the proxy.
Properties are supplied as a dictionary. Each key-value pair in the object is applied to the proxy such that myproxy[key] = value.
Parameters
Name | Type | Description |
---|---|---|
props | Dictionary | A dictionary of properties to apply. |
Returns
- Type
- void
# clearMotionEffects
Removes all previously added motion effects.
Use this method together with <Titanium.UI.horizontalMotionEffect> and <Titanium.UI.verticalMotionEffect>.
Returns
- Type
- void
# convertPointToView
Translates a point from this view's coordinate system to another view's coordinate system.
Returns null
if either view is not in the view hierarchy.
Keep in mind that views may be removed from the view hierarchy if their window is blurred or if the view is offscreen (such as in some situations with Titanium.UI.ScrollableView).
If this view is a Titanium.UI.ScrollView, the view's x and y offsets are subtracted from the return value.
Parameters
Name | Type | Description |
---|---|---|
point | Point | A point in this view's coordinate system. If this argument is missing an |
destinationView | Titanium.UI.View | View that specifies the destination coordinate system to convert to. If this argument is not a view, an exception will be raised. |
Returns
- Type
- Point
# fireEvent
Fires a synthesized event to any registered listeners.
Parameters
Name | Type | Description |
---|---|---|
name | String | Name of the event. |
event | Dictionary | A dictionary of keys and values to add to the Titanium.Event object sent to the listeners. |
Returns
- Type
- void
# getViewById
Returns the matching view of a given view ID.
Parameters
Name | Type | Description |
---|---|---|
id | String | The ID of the view that should be returned. Use the |
Returns
- Type
- Titanium.UI.View
# hide
Hides this view.
Parameters
Name | Type | Description |
---|---|---|
options | AnimatedOptions | Animation options for Android only. Since SDK 5.1.0 and used only on Android 5.0+ Determines whether to enable a circular reveal animation.
Note that the default here is equivalent to passing in |
Returns
- Type
- void
# insertAt
Inserts a view at the specified position in the children array.
Useful if the layout
property is set to horizontal
or vertical
.
Parameters
Name | Type | Description |
---|---|---|
params | ViewPositionOptions | Pass an object that specifies the view to insert and optionally at which position (defaults to end) |
Returns
- Type
- void
# removeEventListener
Removes the specified callback as an event listener for the named event.
Multiple listeners can be registered for the same event, so the
callback
parameter is used to determine which listener to remove.
When adding a listener, you must save a reference to the callback function in order to remove the listener later:
var listener = function() { Ti.API.info("Event listener called."); }
window.addEventListener('click', listener);
To remove the listener, pass in a reference to the callback function:
window.removeEventListener('click', listener);
Parameters
Name | Type | Description |
---|---|---|
name | String | Name of the event. |
callback | Callback<Titanium.Event> | Callback function to remove. Must be the same function passed to |
Returns
- Type
- void
# show
Makes this view visible.
Parameters
Name | Type | Description |
---|---|---|
options | AnimatedOptions | Animation options for Android only. Since SDK 5.1.0 and only used on Android 5.0+ Determines whether to enable a circular reveal animation.
Note that the default here is equivalent to passing in |
Returns
- Type
- void
# toImage
Returns an image of the rendered view, as a Blob.
The honorScaleFactor
argument is only supported on iOS.
Parameters
Name | Type | Description |
---|---|---|
callback | Callback<Titanium.Blob> | Function to be invoked upon completion. If non-null, this method will be performed asynchronously. If null, it will be performed immediately. |
honorScaleFactor | Boolean | Determines whether the image is scaled based on scale factor of main screen. (iOS only) When set to true, image is scale factor is honored. When set to false, the image in the blob has the same dimensions for retina and non-retina devices. |
Returns
- Type
- Titanium.Blob
# Events
# click
Fired when the device detects a click against the view.
There is a subtle difference between singletap and click events.
A singletap event is generated when the user taps the screen briefly without moving their finger. This gesture will also generate a click event.
However, a click event can also be generated when the user touches, moves their finger, and then removes it from the screen.
On Android, a click event can also be generated by a trackball click.
Properties
Name | Type | Description |
---|---|---|
x | Number | X coordinate of the event from the |
y | Number | Y coordinate of the event from the |
obscured | Boolean | Returns This is a security feature to protect an app from "tapjacking", where a malicious app can use a system overlay to intercept touch events in your app or to trick the end-user to tap on UI in your app intended for the overlay. |
source | Object | Source object that fired the event. |
type | String | Name of the event fired. |
bubbles | Boolean | True if the event will try to bubble up if possible. |
cancelBubble | Boolean | Set to true to stop the event from bubbling. |
# dblclick
Fired when the device detects a double click against the view.
Properties
Name | Type | Description |
---|---|---|
x | Number | X coordinate of the event from the |
y | Number | Y coordinate of the event from the |
obscured | Boolean | Returns This is a security feature to protect an app from "tapjacking", where a malicious app can use a system overlay to intercept touch events in your app or to trick the end-user to tap on UI in your app intended for the overlay. |
source | Object | Source object that fired the event. |
type | String | Name of the event fired. |
bubbles | Boolean | True if the event will try to bubble up if possible. |
cancelBubble | Boolean | Set to true to stop the event from bubbling. |
# doubletap
Fired when the device detects a double tap against the view.
Properties
Name | Type | Description |
---|---|---|
x | Number | X coordinate of the event from the |
y | Number | Y coordinate of the event from the |
obscured | Boolean | Returns This is a security feature to protect an app from "tapjacking", where a malicious app can use a system overlay to intercept touch events in your app or to trick the end-user to tap on UI in your app intended for the overlay. |
source | Object | Source object that fired the event. |
type | String | Name of the event fired. |
bubbles | Boolean | True if the event will try to bubble up if possible. |
cancelBubble | Boolean | Set to true to stop the event from bubbling. |
# keypressed
Fired when a hardware key is pressed in the view.
A keypressed event is generated by pressing a hardware key. On Android, this event can only be fired when the property focusable is set to true. On iOS the event is generated only when using Titanium.UI.TextArea, Titanium.UI.TextField and Titanium.UI.SearchBar.
Properties
Name | Type | Description |
---|---|---|
keyCode | Number | The code for the physical key that was pressed. For more details, see KeyEvent. This API is experimental and subject to change. |
source | Object | Source object that fired the event. |
type | String | Name of the event fired. |
bubbles | Boolean | True if the event will try to bubble up if possible. |
cancelBubble | Boolean | Set to true to stop the event from bubbling. |
# longpress
Fired when the device detects a long press.
A long press is generated by touching and holding on the touchscreen. Unlike a longclick
,
it does not respond to the trackball button.
The event occurs before the finger is lifted.
A longpress
and a longclick
can occur together.
In contrast to a longclick
, this event returns the x
and y
coordinates of the touch.
Properties
Name | Type | Description |
---|---|---|
x | Number | X coordinate of the event from the |
y | Number | Y coordinate of the event from the |
obscured | Boolean | Returns This is a security feature to protect an app from "tapjacking", where a malicious app can use a system overlay to intercept touch events in your app or to trick the end-user to tap on UI in your app intended for the overlay. |
source | Object | Source object that fired the event. |
type | String | Name of the event fired. |
bubbles | Boolean | True if the event will try to bubble up if possible. |
cancelBubble | Boolean | Set to true to stop the event from bubbling. |
# pinch
Fired when the device detects a pinch gesture.
A pinch is a touch and expand or contract with two fingers. The event occurs continuously until a finger is lifted again.
Properties
Name | Type | Description |
---|---|---|
scale | Number | The scale factor relative to the points of the two touches in screen coordinates. |
velocity | Number | The velocity of the pinch in scale factor per second. |
time | Number | The event time of the current event being processed. |
timeDelta | Number | The time difference in milliseconds between the previous accepted scaling event and the current scaling event. |
currentSpan | Number | The average distance between each of the pointers forming the gesture in progress through the focal point. |
currentSpanX | Number | The average X distance between each of the pointers forming the gesture in progress through the focal point. |
currentSpanY | Number | The average Y distance between each of the pointers forming the gesture in progress through the focal point. |
previousSpan | Number | The previous average distance between each of the pointers forming the gesture in progress through the focal point. |
previousSpanX | Number | The previous average X distance between each of the pointers forming the gesture in progress through the focal point. |
previousSpanY | Number | The previous average Y distance between each of the pointers forming the gesture in progress through the focal point. |
focusX | Number | The X coordinate of the current gesture's focal point. |
focusY | Number | The Y coordinate of the current gesture's focal point. |
inProgress | Boolean | Returns |
source | Object | Source object that fired the event. |
type | String | Name of the event fired. |
bubbles | Boolean | True if the event will try to bubble up if possible. |
cancelBubble | Boolean | Set to true to stop the event from bubbling. |
# postlayout
Fired when a layout cycle is finished.
This event is fired when the view and its ancestors have been laid out. The rect and size values should be usable when this event is fired.
This event is typically triggered by either changing layout properties or by changing the orientation of the device. Note that changing the layout of child views or ancestors can also trigger a relayout of this view.
Note that altering any properties that affect layout from the postlayout
callback
may result in an endless loop.
# singletap
Fired when the device detects a single tap against the view.
Properties
Name | Type | Description |
---|---|---|
x | Number | X coordinate of the event from the |
y | Number | Y coordinate of the event from the |
obscured | Boolean | Returns This is a security feature to protect an app from "tapjacking", where a malicious app can use a system overlay to intercept touch events in your app or to trick the end-user to tap on UI in your app intended for the overlay. |
source | Object | Source object that fired the event. |
type | String | Name of the event fired. |
bubbles | Boolean | True if the event will try to bubble up if possible. |
cancelBubble | Boolean | Set to true to stop the event from bubbling. |
# swipe
Fired when the device detects a swipe gesture against the view.
Properties
Name | Type | Description |
---|---|---|
direction | String | Direction of the swipe--either 'left', 'right', 'up', or 'down'. |
x | Number | X coordinate of the event's endpoint from the |
y | Number | Y coordinate of the event's endpoint from the |
obscured | Boolean | Returns This is a security feature to protect an app from "tapjacking", where a malicious app can use a system overlay to intercept touch events in your app or to trick the end-user to tap on UI in your app intended for the overlay. |
source | Object | Source object that fired the event. |
type | String | Name of the event fired. |
bubbles | Boolean | True if the event will try to bubble up if possible. |
cancelBubble | Boolean | Set to true to stop the event from bubbling. |
# touchcancel
Fired when a touch event is interrupted by the device.
A touchcancel can happen in circumstances such as an incoming call to allow the UI to clean up state.
Properties
Name | Type | Description |
---|---|---|
x | Number | X coordinate of the event from the |
y | Number | Y coordinate of the event from the |
force | Number | The current force value of the touch event. Note: This property is only available for iOS devices that support 3D-Touch and run 9.0 or later and on some Android devices. |
size | Number | The current size of the touch area. Note: This property is only available on some Android devices. |
maximumPossibleForce | Number | Maximum possible value of the force property. Note: This property is only available for iOS devices that support 3D-Touch and run 9.0 or later. |
altitudeAngle | Number | A value which indicates the stylus angle on the screen. If the stylus is perpendicular to the screen or no stylus is being used, the value will be Pi/2. If the stylus is parallel to the screen, the value will be 0. Note: This property is only available for iOS devices that support 3D-Touch and are 9.1 or later. |
timestamp | Number | The time (in seconds) when the touch was used in correlation with the system start up. Note: This property is only available for iOS devices that support 3D-Touch and run 9.0 or later. |
azimuthUnitVectorInViewX | Number | The x value of the unit vector that points in the direction of the azimuth of the stylus. Note: This property is only available for iOS devices that support the Apple Pencil and are 9.1 or later. |
azimuthUnitVectorInViewY | Number | The y value of the unit vector that points in the direction of the azimuth of the stylus. Note: This property is only available for iOS devices that support the Apple Pencil and are 9.1 or later. |
obscured | Boolean | Returns This is a security feature to protect an app from "tapjacking", where a malicious app can use a system overlay to intercept touch events in your app or to trick the end-user to tap on UI in your app intended for the overlay. |
source | Object | Source object that fired the event. |
type | String | Name of the event fired. |
bubbles | Boolean | True if the event will try to bubble up if possible. |
cancelBubble | Boolean | Set to true to stop the event from bubbling. |
# touchend
Fired when a touch event is completed.
On the Android platform, other gesture events, such as longpress
or swipe
, cancel touch
events, so this event may not be triggered after a touchstart
event.
Properties
Name | Type | Description |
---|---|---|
x | Number | X coordinate of the event from the |
y | Number | Y coordinate of the event from the |
force | Number | The current force value of the touch event. Note: This property is only available for iOS devices that support 3D-Touch and run 9.0 or later and on some Android devices. |
size | Number | The current size of the touch area. Note: This property is only available on some Android devices. |
maximumPossibleForce | Number | Maximum possible value of the force property. Note: This property is only available for iOS devices that support 3D-Touch and run 9.0 or later. |
altitudeAngle | Number | A value which indicates the stylus angle on the screen. If the stylus is perpendicular to the screen or no stylus is being used, the value will be Pi/2. If the stylus is parallel to the screen, the value will be 0. Note: This property is only available for iOS devices that support 3D-Touch and are 9.1 or later. |
timestamp | Number | The time (in seconds) when the touch was used in correlation with the system start up. Note: This property is only available for iOS devices that support 3D-Touch and run 9.0 or later. |
azimuthUnitVectorInViewX | Number | The x value of the unit vector that points in the direction of the azimuth of the stylus. Note: This property is only available for iOS devices that support the Apple Pencil and are 9.1 or later. |
azimuthUnitVectorInViewY | Number | The y value of the unit vector that points in the direction of the azimuth of the stylus. Note: This property is only available for iOS devices that support the Apple Penciland are 9.1 or later. |
obscured | Boolean | Returns This is a security feature to protect an app from "tapjacking", where a malicious app can use a system overlay to intercept touch events in your app or to trick the end-user to tap on UI in your app intended for the overlay. |
source | Object | Source object that fired the event. |
type | String | Name of the event fired. |
bubbles | Boolean | True if the event will try to bubble up if possible. |
cancelBubble | Boolean | Set to true to stop the event from bubbling. |
# touchmove
Fired as soon as the device detects movement of a touch.
Event coordinates are always relative to the view in which the initial touch occurred
Properties
Name | Type | Description |
---|---|---|
x | Number | X coordinate of the event from the |
y | Number | Y coordinate of the event from the |
force | Number | The current force value of the touch event. Note: This property is only available for iOS devices that support 3D-Touch and run 9.0 or later and on some Android devices. |
size | Number | The current size of the touch area. Note: This property is only available on some Android devices. |
maximumPossibleForce | Number | Maximum possible value of the force property. Note: This property is only available for iOS devices that support 3D-Touch and run 9.0 or later. |
altitudeAngle | Number | A value which indicates the stylus angle on the screen. If the stylus is perpendicular to the screen or no stylus is being used, the value will be Pi/2. If the stylus is parallel to the screen, the value will be 0. Note: This property is only available for iOS devices that support 3D-Touch and are 9.1 or later. |
timestamp | Number | The time (in seconds) when the touch was used in correlation with the system start up. Note: This property is only available for iOS devices that support 3D-Touch and run 9.0 or later. |
azimuthUnitVectorInViewX | Number | The x value of the unit vector that points in the direction of the azimuth of the stylus. Note: This property is only available for iOS devices that support the Apple Pencil and are 9.1 or later. |
azimuthUnitVectorInViewY | Number | The y value of the unit vector that points in the direction of the azimuth of the stylus. Note: This property is only available for iOS devices that support the Apple Pencil and are 9.1 or later. |
obscured | Boolean | Returns This is a security feature to protect an app from "tapjacking", where a malicious app can use a system overlay to intercept touch events in your app or to trick the end-user to tap on UI in your app intended for the overlay. |
source | Object | Source object that fired the event. |
type | String | Name of the event fired. |
bubbles | Boolean | True if the event will try to bubble up if possible. |
cancelBubble | Boolean | Set to true to stop the event from bubbling. |
# touchstart
Fired as soon as the device detects a touch gesture.
Properties
Name | Type | Description |
---|---|---|
x | Number | X coordinate of the event from the |
y | Number | Y coordinate of the event from the |
force | Number | The current force value of the touch event. Note: This property is only available for iOS devices that support 3D-Touch and run 9.0 or later and on some Android devices. |
size | Number | The current size of the touch area. Note: This property is only available on some Android devices. |
maximumPossibleForce | Number | Maximum possible value of the force property. Note: This property is only available for iOS devices that support 3D-Touch and run 9.0 or later. |
altitudeAngle | Number | A value which indicates the stylus angle on the screen. If the stylus is perpendicular to the screen or no stylus is being used, the value will be Pi/2. If the stylus is parallel to the screen, the value will be 0. Note: This property is only available for iOS devices that support 3D-Touch and are 9.1 or later. |
timestamp | Number | The time (in seconds) when the touch was used in correlation with the system start up. Note: This property is only available for iOS devices that support 3D-Touch and run 9.0 or later. |
azimuthUnitVectorInViewX | Number | The x value of the unit vector that points in the direction of the azimuth of the stylus. Note: This property is only available for iOS devices that support the Apple Pencil and are 9.1 or later. |
azimuthUnitVectorInViewY | Number | The y value of the unit vector that points in the direction of the azimuth of the stylus. Note: This property is only available for iOS devices that support the Apple Pencil and are 9.1 or later. |
obscured | Boolean | Returns This is a security feature to protect an app from "tapjacking", where a malicious app can use a system overlay to intercept touch events in your app or to trick the end-user to tap on UI in your app intended for the overlay. |
source | Object | Source object that fired the event. |
type | String | Name of the event fired. |
bubbles | Boolean | True if the event will try to bubble up if possible. |
cancelBubble | Boolean | Set to true to stop the event from bubbling. |