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    android-emulator-webrtc

    1.0.15 • Public • Published

    android-emulator-webrtc

    This contains a set of React components that can be used to interact with the android emulator from the browser. It is intended to be used with an envoy proxy that is connected to a running emulator.

    See the android container scripts for an example on how to run an emulator that is accessible via the web.

    npm install --save android-emulator-webrtc
    

    Full reference

    Features

    • Display and interact with android emulator over the web, including audio if available.
    • Retrieve logcat from remote emulator.
    • Retrieve emulator status

    Usage

    You can connect to remote unsecured emulator as follows:

    import { Emulator } from "android-emulator-webrtc/emulator";
    
    class EmulatorScreen extends React.Component {
      render() {
        return <Emulator uri="https://my.emulator" />;
      }
    }

    In order to connect to a secure endpoint you will have to provide an authorization service that provides the following functions:

    • authHeader() which must return a set of headers that should be send along with a request. For example:
     authHeader = () => {
        return { Authorization: 'Some Token' };
      };
    }
    • unauthorized() a function that gets called when a 401 was received. Here you can provide logic to handle token refresh, re-login etc.

    For example:

    import { Emulator } from "android-emulator-webrtc/emulator";
    
    class EmulatorScreen extends React.Component {
      render() {
        return <Emulator uri="https://my.emulator" auth={my_auth_object} />;
      }
    }

    Full Reference

    Emulator

    A React component that displays a remote android emulator.

    The emulator will mount a png or webrtc view component to display the current state of the emulator. It will translate mouse events on this component and send them to the actual emulator.

    Authentication Service

    The authentication service should implement the following methods:

    • authHeader() which must return a set of headers that should be send along with a request.
    • unauthorized() a function that gets called when a 401 was received.

    Type of view

    You usually want this to be webrtc as this will make use of the efficient webrtc implementation. The png view will request screenshots, which are very slow, and require the envoy proxy. You should not use this for remote emulators.

    Pressing hardware buttons

    This component has a method sendKey to sends a key to the emulator. You can use this to send physical hardwar events to the emulator for example:

    "AudioVolumeDown" - Decreases the audio volume. "AudioVolumeUp" - Increases the audio volume. "Power" - The Power button or key, turn off the device. "AppSwitch" - Should bring up the application switcher dialog. "GoHome" - Go to the home screen. "GoBack" - Open the previous screen you were looking at.

    prop type default required description
    auth Object null The authentication service to use, or null for no authentication.
    height Number The height of the component
    muted Boolean true True if the audio should be disabled. This is only relevant when using the webrtc engine.
    onAudioStateChange Function (s) => { console.log("emulator audio: " + s); } Called when the audio becomes (un)available. True if audio is available, false otherwise.
    onError Function (e) => { console.error(e); } Callback that will be invoked in case of gRPC errors.
    onStateChange Function (s) => { console.log("emulator state: " + s); } Called upon state change, one of ["connecting", "connected", "disconnected"]
    gps A GeolocationCoordinates like object indicating where the device is.
    poll Boolean false True if polling should be used, only set this to true if you are using the go webgrpc proxy.
    uri String gRPC Endpoint where we can reach the emulator.
    view Enum("webrtc", "png") "webrtc" The underlying view used to display the emulator, one of ["webrtc", "png"]
    volume Number 1.0 Volume between [0, 1] when audio is enabled. 0 is muted, 1.0 is 100%
    width Number The width of the component

    Note: The user must have interacted with the page before you can set the volume to "unmuted" (muted = false). Otherwise the video will not play and will throw an error, which is currently not handled.

    Note: The volume is the volume of the video element that is displayed, this is not the actual volume used inside the emulator. You can change the audio inside the emulator by sending the proper keys as documented above, or follow the steps in the support document on how to change the audio volume.


    EmulatorStatus

    Kind: global class

    new EmulatorStatus()

    Gets the status of the emulator, parsing the hardware config into something easy to digest.

    Param Type Description
    uriOrEmulator string/EmulatorControllerService uri to gRPC endpoint.
    auth object authorization class.

    EmulatorStatus.getStatus

    Gets the cached status.

    Kind: static property of EmulatorStatus

    EmulatorStatus.updateStatus

    Retrieves the current status from the emulator.

    Kind: static property of EmulatorStatus

    Param Type Description
    fnNotify Callback when the status is available, returns the retrieved status.
    cache boolean True if the cache can be used.

    Logcat

    Observe the logcat stream from the emulator.

    Streaming is done by either polling the emulator endpoint or making a streaming call.

    It will send out the following events:

    • start whenever the start method was called.
    • data whenever new data became available.
    • end whenever the stream is finished, either because it was stopped, or due to an error.

    Kind: global class

    new Logcat(uriOrEmulator, auth)

    Creates a logcat stream.

    The authentication service should implement the following methods:

    • authHeader() which must return a set of headers that should be send along with a request.
    • unauthorized() a function that gets called when a 401 was received.
    Param Type
    uriOrEmulator object
    auth object

    Logcat.on

    Register a listener.

    Kind: static property of Logcat

    Param Type Description
    name string Name of the event.
    fn Callback Function to notify on the given event.

    Logcat.off

    Removes a listener.

    Kind: static property of Logcat

    Param Type Description
    name string Name of the event.
    fn Callback Function to notify on the given event.

    Logcat.stop

    Cancel the currently active logcat stream.

    Kind: static property of Logcat

    Logcat.start

    Requests the logcat stream, invoking the callback when a log line arrives.

    Note: Streaming can cause serious UI delays, so best not to use it.

    Kind: static property of Logcat

    Param Type Description
    fnNotify Callback when a new log line arrives.
    refreshRate number polling interval, or 0 if you wish to use streaming.

    Install

    npm i android-emulator-webrtc

    DownloadsWeekly Downloads

    88

    Version

    1.0.15

    License

    Apache-2.0

    Unpacked Size

    678 kB

    Total Files

    52

    Last publish

    Collaborators

    • pokowaka