Video

Extends Widget

A widget that plays a video from an URL.

Import this type with “const {Video} = require('tabris');”

Android	iOS

Methods

pause()

Pauses the video. state changes to pause and speed to 0. Has no effect when state is not play.

play(speed)

Parameters:

• speed: number [Optional]
  • desired playback speed. If the given speed is not supported by the platform or video, the actual playback speed will be 1 - i.e. the natural speed of the video.
    Starts playing the video, state changes to play. Has no effect unless the current state is either pause or ready.

seek(position)

Parameters:

• position: number
  • desired position in milliseconds.
    Attempts to change the position to the given time index. Success depends on the currently loaded video. Has no effect if the current state is empty or fail.

Properties

autoPlay

Type: boolean, default: true

If set to true, starts playing the video as soon as the state changes from open to ready.

controlsVisible

Type: boolean, default: true

If set to true, overlays the video with a native UI for controlling playback.

duration

read-only Type: number

Returns the full length of the current video in milliseconds.

position

read-only Type: number

Returns the current playback position in milliseconds. This property does not trigger any change events.

speed

read-only Type: number

Returns the current playback speed. The value 1 represents the natural speed of the video. When the state of the widget is not play this property always has the value 0.

state

read-only Type: string, supported values: empty, open, ready, play, stale, pause, finish, fail, default: empty

The current state of the widget.

url

Type: string

The URL of the video to play. Setting this property to any non-empty string changes the state to open and the video starts loading. Setting this property to an empty string unloads the current video and the state returns to empty.

Events

autoPlayChanged

Fired when the autoPlay property has changed.

Event Parameters

• target: this The widget the event was fired on.

• value: boolean The new value of autoPlay.

controlsVisibleChanged

Fired when the controlsVisible property has changed.

Event Parameters

• target: this The widget the event was fired on.

• value: boolean The new value of controlsVisible.

durationChanged

Fired when the duration property has changed.

Event Parameters

• target: this The widget the event was fired on.

• value: number The new value of duration.

positionChanged

Fired when the position property has changed.

Event Parameters

• target: this The widget the event was fired on.

• value: number The new value of position.

speedChanged

Fired when the speed property has changed.

Event Parameters

• target: this The widget the event was fired on.

• value: number The new value of speed.

stateChanged

Fired when the state property has changed.

Event Parameters

• target: this The widget the event was fired on.

• value: string The new value of state.

urlChanged

Fired when the url property has changed.

Event Parameters

• target: this The widget the event was fired on.

• value: string The new value of url.

Example

const {Button, Video, ui} = require('tabris');
let button = new Button({
  id: 'button',
  centerX: 0, bottom: 16,
  text: '❚❚'
}).on('select', () => video.state === 'play' ? video.pause() : video.play())
  .appendTo(ui.contentView);
let video = new Video({
  left: 0, top: 0, right: 0, bottom: '#button 16',
  url: 'http://peach.themazzone.com/durian/movies/sintel-1280-stereo.mp4',
  controlsVisible: false
}).on('stateChanged', event => button.text = event.value !== 'pause' ? '❚❚' : '▶')
  .appendTo(ui.contentView);

See also

• Snippet for creating a video widget

原文:

https://youjingyu.github.io/Tabris-Documention/?folderName=widgets&pageName=Video.html