logo标签列表

用于模拟Android传感器的openintents的替代方案

javaandroidsimulationopen-intents
6
我正在为Android移动设备开发一个可扩展的感应和数据处理框架。它将使得各种数据信号（例如温度、电池、压力、Wi-Fi信号强度等）可以通过Android移动设备访问。
为了测试传感器，我在我的Android设备上部署了自己编写的android代码。然而，这里有个限制——我的Android设备只有一组有限的传感器（例如，它没有温度传感器），因此我不能为所有类型的传感器（例如温度、压力等）测试所有编写好的代码。
我在网上查找了SensorSimulator项目（），但它对我无效，我得到了以下错误信息。
05-03 01:40:40.766: E/AndroidRuntime(10139): FATAL EXCEPTION: main
05-03 01:40:40.766: E/AndroidRuntime(10139): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.helloworldsensorsimulator/com.example.helloworldsensorsimulator.MainActivity}: android.os.NetworkOnMainThreadException
05-03 01:40:40.766: E/AndroidRuntime(10139):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2121)
05-03 01:40:40.766: E/AndroidRuntime(10139):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2146)
05-03 01:40:40.766: E/AndroidRuntime(10139):    at android.app.ActivityThread.access$700(ActivityThread.java:140)
05-03 01:40:40.766: E/AndroidRuntime(10139):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1238)
05-03 01:40:40.766: E/AndroidRuntime(10139):    at android.os.Handler.dispatchMessage(Handler.java:99)
05-03 01:40:40.766: E/AndroidRuntime(10139):    at android.os.Looper.loop(Looper.java:177)
05-03 01:40:40.766: E/AndroidRuntime(10139):    at android.app.ActivityThread.main(ActivityThread.java:4947)
05-03 01:40:40.766: E/AndroidRuntime(10139):    at java.lang.reflect.Method.invokeNative(Native Method)
05-03 01:40:40.766: E/AndroidRuntime(10139):    at java.lang.reflect.Method.invoke(Method.java:511)
05-03 01:40:40.766: E/AndroidRuntime(10139):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1038)
05-03 01:40:40.766: E/AndroidRuntime(10139):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)
05-03 01:40:40.766: E/AndroidRuntime(10139):    at dalvik.system.NativeStart.main(Native Method)
05-03 01:40:40.766: E/AndroidRuntime(10139): Caused by: android.os.NetworkOnMainThreadException
05-03 01:40:40.766: E/AndroidRuntime(10139):    at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1118)
05-03 01:40:40.766: E/AndroidRuntime(10139):    at libcore.io.BlockGuardOs.connect(BlockGuardOs.java:84)
05-03 01:40:40.766: E/AndroidRuntime(10139):    at libcore.io.IoBridge.connectErrno(IoBridge.java:127)
05-03 01:40:40.766: E/AndroidRuntime(10139):    at libcore.io.IoBridge.connect(IoBridge.java:112)
05-03 01:40:40.766: E/AndroidRuntime(10139):    at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:192)
05-03 01:40:40.766: E/AndroidRuntime(10139):    at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
05-03 01:40:40.766: E/AndroidRuntime(10139):    at java.net.Socket.startupSocket(Socket.java:566)
05-03 01:40:40.766: E/AndroidRuntime(10139):    at java.net.Socket.tryAllAddresses(Socket.java:127)
05-03 01:40:40.766: E/AndroidRuntime(10139):    at java.net.Socket.<init>(Socket.java:177)
05-03 01:40:40.766: E/AndroidRuntime(10139):    at java.net.Socket.<init>(Socket.java:149)
05-03 01:40:40.766: E/AndroidRuntime(10139):    at org.openintents.sensorsimulator.hardware.SensorSimulatorClient.connect(SensorSimulatorClient.java:116)
05-03 01:40:40.766: E/AndroidRuntime(10139):    at org.openintents.sensorsimulator.hardware.SensorManagerSimulator.connectSimulator(SensorManagerSimulator.java:220)
05-03 01:40:40.766: E/AndroidRuntime(10139):    at com.example.helloworldsensorsimulator.MainActivity.onCreate(MainActivity.java:37)
05-03 01:40:40.766: E/AndroidRuntime(10139):    at android.app.Activity.performCreate(Activity.java:5207)
05-03 01:40:40.766: E/AndroidRuntime(10139):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1094)
05-03 01:40:40.766: E/AndroidRuntime(10139):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2085)
05-03 01:40:40.766: E/AndroidRuntime(10139):    ... 11 more

我已经编写了以下代码，建议在网站上通过Java项目连接SensorSimulator。 AndroidManifest文件包含以下内容：
<uses-permission android:name="android.permission.INTERNET"/>


import org.openintents.sensorsimulator.hardware.Sensor;
import org.openintents.sensorsimulator.hardware.SensorEvent;
import org.openintents.sensorsimulator.hardware.SensorEventListener;
import org.openintents.sensorsimulator.hardware.SensorManagerSimulator;

public class MainActivity extends Activity {

    private SensorManagerSimulator mSensorManager;

    private SensorEventListener mEventListenerAccelerometer;
    private SensorEventListener mEventListenerGravity;
    private SensorEventListener mEventListenerLinearAcceleration;
    private SensorEventListener mEventListenerLight;
    private SensorEventListener mEventListenerTemperature;
    private SensorEventListener mEventListenerOrientation;
    private SensorEventListener mEventListenerMagneticField;
    private SensorEventListener mEventListenerPressure;
    private SensorEventListener mEventListenerRotationVector;
    private SensorEventListener mEventListenerBarcode;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mSensorManager = SensorManagerSimulator.getSystemService(this,
                SENSOR_SERVICE);

        mSensorManager.connectSimulator();


        initListeners();
    }

    private void initListeners() {
        mEventListenerAccelerometer = new SensorEventListener() {

            @Override
            public void onSensorChanged(SensorEvent event) {
                float[] values = event.values;
                System.out.println("Accelerometer: " + values[0]
                        + ", " + values[1] + ", " + values[2]);
                /*mTextViewAccelerometer.setText("Accelerometer: " + values[0]
                        + ", " + values[1] + ", " + values[2]);*/
            }

            @Override
            public void onAccuracyChanged(Sensor sensor, int accuracy) {
            }
        };
        mEventListenerLinearAcceleration = new SensorEventListener() {

            @Override
            public void onSensorChanged(SensorEvent event) {
                float[] values = event.values;
                System.out.println("Linear Acceleration: "
                        + values[0] + ", " + values[1] + ", " + values[2]);
                /*mTextViewLinearAcceleration.setText("Linear Acceleration: "
                        + values[0] + ", " + values[1] + ", " + values[2]);*/
            }

            @Override
            public void onAccuracyChanged(Sensor sensor, int accuracy) {
            }
        };
        mEventListenerGravity = new SensorEventListener() {

            @Override
            public void onSensorChanged(SensorEvent event) {
                float[] values = event.values;
                System.out.println("Gravity: " + values[0] + ", "
                        + values[1] + ", " + values[2]);
                /*mTextViewGravity.setText("Gravity: " + values[0] + ", "
                        + values[1] + ", " + values[2]);*/
            }

            @Override
            public void onAccuracyChanged(Sensor sensor, int accuracy) {
            }
        };
        mEventListenerMagneticField = new SensorEventListener() {

            @Override
            public void onSensorChanged(SensorEvent event) {
                float[] values = event.values;

                System.out.println("Compass: " + values[0] + ", "
                        + values[1] + ", " + values[2]);
                /*mTextViewMagneticField.setText("Compass: " + values[0] + ", "
                        + values[1] + ", " + values[2]);
*/          }

            @Override
            public void onAccuracyChanged(Sensor sensor, int accuracy) {
            }
        };
        mEventListenerOrientation = new SensorEventListener() {

            @Override
            public void onSensorChanged(SensorEvent event) {
                float[] values = event.values;
                System.out.println("Orientation: " + values[0] + ", "
                        + values[1] + ", " + values[2]);
                /*mTextViewOrientation.setText("Orientation: " + values[0] + ", "
                        + values[1] + ", " + values[2]);*/
            }

            @Override
            public void onAccuracyChanged(Sensor sensor, int accuracy) {
            }
        };
        mEventListenerTemperature = new SensorEventListener() {

            @Override
            public void onSensorChanged(SensorEvent event) {
                float[] values = event.values;
                System.out.println("Temperature: " + values[0]);
                //mTextViewTemperature.setText("Temperature: " + values[0]);
            }

            @Override
            public void onAccuracyChanged(Sensor sensor, int accuracy) {
            }
        };
        mEventListenerLight = new SensorEventListener() {

            @Override
            public void onSensorChanged(SensorEvent event) {
                float[] values = event.values;
                System.out.println("Light: " + values[0]);
                //mTextViewLight.setText("Light: " + values[0]);
            }

            @Override
            public void onAccuracyChanged(Sensor sensor, int accuracy) {
            }
        };
        mEventListenerPressure = new SensorEventListener() {

            @Override
            public void onSensorChanged(SensorEvent event) {
                float[] values = event.values;
                System.out.println("Pressure: " + values[0]);
                //mTextViewPressure.setText("Pressure: " + values[0]);
            }

            @Override
            public void onAccuracyChanged(Sensor sensor, int accuracy) {
            }
        };
        mEventListenerRotationVector = new SensorEventListener() {

            @Override
            public void onSensorChanged(SensorEvent event) {
                float[] values = event.values;
                System.out.println("RotationVector: " + values[0]
                        + ", " + values[1] + ", " + values[2]);
            /*  mTextViewRotationVector.setText("RotationVector: " + values[0]
                        + ", " + values[1] + ", " + values[2]);*/
            }

            @Override
            public void onAccuracyChanged(Sensor sensor, int accuracy) {
            }
        };

        mEventListenerBarcode = new SensorEventListener() {

            @Override
            public void onSensorChanged(SensorEvent event) {
                System.out.println("Barcode: " + event.barcode);
                //mTextViewBarcode.setText("Barcode: " + event.barcode);
            }

            @Override
            public void onAccuracyChanged(Sensor sensor, int accuracy) {
            }
        };
    }

    @Override
    protected void onResume() {
        super.onResume();
    /*  mSensorManager.registerListener(mEventListenerAccelerometer,
                mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER),
                SensorManager.SENSOR_DELAY_FASTEST);
        mSensorManager.registerListener(mEventListenerLinearAcceleration,
                mSensorManager
                        .getDefaultSensor(Sensor.TYPE_LINEAR_ACCELERATION),
                SensorManager.SENSOR_DELAY_FASTEST);
        mSensorManager.registerListener(mEventListenerGravity,
                mSensorManager.getDefaultSensor(Sensor.TYPE_GRAVITY),
                SensorManager.SENSOR_DELAY_FASTEST);
        mSensorManager.registerListener(mEventListenerMagneticField,
                mSensorManager.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD),
                SensorManager.SENSOR_DELAY_FASTEST);
        mSensorManager.registerListener(mEventListenerOrientation,
                mSensorManager.getDefaultSensor(Sensor.TYPE_ORIENTATION),
                SensorManager.SENSOR_DELAY_FASTEST);*/
        mSensorManager.registerListener(mEventListenerTemperature,
                mSensorManager.getDefaultSensor(Sensor.TYPE_TEMPERATURE),
                SensorManager.SENSOR_DELAY_FASTEST);
        /*mSensorManager.registerListener(mEventListenerLight,
                mSensorManager.getDefaultSensor(Sensor.TYPE_LIGHT),
                SensorManager.SENSOR_DELAY_FASTEST);
        mSensorManager.registerListener(mEventListenerPressure,
                mSensorManager.getDefaultSensor(Sensor.TYPE_PRESSURE),
                SensorManager.SENSOR_DELAY_FASTEST);
        mSensorManager.registerListener(mEventListenerBarcode,
                mSensorManager.getDefaultSensor(Sensor.TYPE_BARCODE_READER),
                SensorManager.SENSOR_DELAY_FASTEST);
        mSensorManager.registerListener(mEventListenerRotationVector,
                mSensorManager.getDefaultSensor(Sensor.TYPE_ROTATION_VECTOR),
                SensorManager.SENSOR_DELAY_FASTEST);*/
    }

    @Override
    protected void onStop() {
        /*mSensorManager.unregisterListener(mEventListenerAccelerometer);
        mSensorManager.unregisterListener(mEventListenerLinearAcceleration);
        mSensorManager.unregisterListener(mEventListenerGravity);
        mSensorManager.unregisterListener(mEventListenerMagneticField);
        mSensorManager.unregisterListener(mEventListenerOrientation);*/
        mSensorManager.unregisterListener(mEventListenerTemperature);
        /*mSensorManager.unregisterListener(mEventListenerLight);
        mSensorManager.unregisterListener(mEventListenerPressure);
        mSensorManager.unregisterListener(mEventListenerRotationVector);
        mSensorManager.unregisterListener(mEventListenerBarcode);*/
        super.onStop();
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

}
你正在使用哪些设备进行测试？使用了哪些ROM？ - indivisible
这是三星GT-S7392手机，运行的是Android 4.1.2版本。 - user-517752
错误与OpenIntents无关，您不能在UI线程中阻塞网络请求（永远不行）。Caused by: android.os.NetworkOnMainThreadException 尝试将其包装在AsyncTask中？ - edthethird
你能提供一个样例吗？ - user-517752
1个回答
5

调用SensorManager.connectSimulator()方法会产生网络操作，你的堆栈跟踪已经证明了这点。因此，你试图在应用程序的主线程上执行网络操作。Android默认情况下不允许这样做，所以您有两个选择：

  1. 使用另一个线程或异步任务（async task）。 AsyncTask 的语法和使用约定可能有点令人困惑，这里提供一个例子：AsyncTask Android example。
  2. 关闭严格模式 （不推荐）。
您能提供一个样例吗？ - user-517752
1
@PankeshPatel更新了AsyncTask文档的链接。您只需要将mSensorManager.connectSimulator();代码行放入doInBackground()方法中即可。 - dcow
问题仍然存在。我无法从SensorSimulator获取数据。 - user-517752
@PankeshPatel，请更新您的问题并提供新信息。我无法读取您的想法。 - dcow
网页内容由stack overflow 提供, 点击上面的
可以查看英文原文，
原文链接