Question

我按照几个教程构建了一个收集我的Android磨损加速度计（x，y，x）的Android应用程序。我想将收集的数据发送到手机以便识别，以便稍后进行分析。一切正常，我有两个按钮来开始/停止收集。我收集数据并将其存储在List中，然后在停止按钮命中后，我使用一个线程将其发送到手机。我有一些问题：

为什么我在手机上打印数据时会收到Skipped XXX frames! The application may be doing too much work on its main thread.？
在这里使用AsyncTask吗？或者我应该使用Thread？

这是我的代码：

public void onStartClicked(View view) {
    Log.v("StartClicked", "in on start clicked");
    googleClient.disconnect();
    updating = 1;
}

//when stop button clicked, the gathered data 
//will be sent to the phone
public void onStopClicked(View view) {
    Log.v("StartClicked", "in on stop clicked");
    googleClient.connect();
    updating = 0;
    new LongOperation().execute("");
}
@Override
public void onSensorChanged(SensorEvent sensorEvent) {
        Sensor mySensor = sensorEvent.sensor;
        accelerationTextView = (TextView) findViewById(R.id.text);
        if (updating == 1) {

            if (mySensor.getType() == Sensor.TYPE_ACCELEROMETER) {
                float x = sensorEvent.values[0];
                float y = sensorEvent.values[1];
                float z = sensorEvent.values[2];


                double m = Math.sqrt((sensorEvent.values[0] * sensorEvent.values[0]
                        + sensorEvent.values[1] * sensorEvent.values[1] + sensorEvent.values[2]
                        * sensorEvent.values[2]));

                SensorDataItem item = new SensorDataItem(m, sensorEvent.values[0], sensorEvent.values[1], sensorEvent.values[2], new Date());
                dataQueue.add(item);
            }
        }
    }
//when the button stop pressed, this happens
private class LongOperation extends AsyncTask<String, Void, String> {

    @Override
    protected String doInBackground(String... params) {
        //
        NodeApi.GetConnectedNodesResult nodes = Wearable.NodeApi.getConnectedNodes(googleClient).await();
        for (Node node : nodes.getNodes()) {
            try {
                Thread.sleep(1000);
                MessageApi.SendMessageResult result = Wearable.MessageApi.sendMessage(googleClient, node.getId(), path, dataQueue.toString().getBytes()).await();
                if (result.getStatus().isSuccess()) {
                    Log.v("myTag", "Message: {" + message + "} sent to: " + node.getDisplayName());
                } else {
                    // Log an error
                    Log.v("myTag", "ERROR: failed to send Message");
                }

            } catch (InterruptedException e) {
                Thread.interrupted();
            }

        }
        return "Executed";
    }

从磨损到手机发送数据时跳过Android跳帧

0 个答案: