Is it impossible to use it on Android?

[jkjan]

I am using WebView to use this library, but
it does not recognize a phone camera as a webcam,
and log says "Could not open your camera. You may have denied access."
while this app has a permission to the camera.

Is there a way that I can use teachable machine on Android?

This is a code I used on Android :

<div>Teachable Machine Pose Model</div>
<button type='button' onclick='init()'>Start</button>
<div><canvas id='canvas'></canvas></div>
<div id='label-container'></div>
<script src="https://cdn.jsdelivr.net/npm/@tensorflow/[email protected]/dist/tf.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/@teachablemachine/[email protected]/dist/teachablemachine-pose.min.js"></script>
<script type="text/javascript">
    // More API functions here:
    // https://github.com/googlecreativelab/teachablemachine-community/tree/master/libraries/pose

    // the link to your model provided by Teachable Machine export panel
    const URL = '{{URL}}';
    let model, webcam, ctx, labelContainer, maxPredictions;

    async function init() {
        const modelURL = URL + 'model.json';
        const metadataURL = URL + 'metadata.json';

        // load the model and metadata
        // Refer to tmPose.loadFromFiles() in the API to support files from a file picker
        model = await tmPose.load(modelURL, metadataURL);
        maxPredictions = model.getTotalClasses();

        // Convenience function to setup a webcam
        const flip = true; // whether to flip the webcam
        webcam = new tmPose.Webcam(200, 200, flip); // width, height, flip
        await webcam.setup(); // request access to the webcam
        webcam.play();
        window.requestAnimationFrame(loop);

        // append/get elements to the DOM
        const canvas = document.getElementById('canvas');
        canvas.width = 200; canvas.height = 200;
        ctx = canvas.getContext('2d');
        labelContainer = document.getElementById('label-container');
        for (let i = 0; i < maxPredictions; i++) { // and class labels
            labelContainer.appendChild(document.createElement('div'));
        }
    }

    async function loop(timestamp) {
        webcam.update(); // update the webcam frame
        await predict();
        window.requestAnimationFrame(loop);
    }

    async function predict() {
        // Prediction #1: run input through posenet
        // estimatePose can take in an image, video or canvas html element
        const { pose, posenetOutput } = await model.estimatePose(webcam.canvas);
        // Prediction 2: run input through teachable machine classification model
        const prediction = await model.predict(posenetOutput);

        for (let i = 0; i < maxPredictions; i++) {
            const classPrediction =
                prediction[i].className + ': ' + prediction[i].probability.toFixed(2);
            labelContainer.childNodes[i].innerHTML = classPrediction;
        }

        // finally draw the poses
        drawPose(pose);
    }

    function drawPose(pose) {
        ctx.drawImage(webcam.canvas, 0, 0);
        // draw the keypoints and skeleton
        if (pose) {
            const minPartConfidence = 0.5;
            tmPose.drawKeypoints(pose.keypoints, minPartConfidence, ctx);
            tmPose.drawSkeleton(pose.keypoints, minPartConfidence, ctx);
        }
    }
</script>

[natowi]

Seems to be a permission problem with WebView. Take a look at https://stackoverflow.com/questions/40659198/how-to-access-the-camera-from-within-a-webview react-native-webview/react-native-webview#508 https://github.com/googlesamples/android-PermissionRequest

You can also use the android example (explained here) #116

Edit: & #146