android - 如果满足陀螺仪读数等条件，如何获得时间

Question

当陀螺仪读数 x=0.0,y=0.0,z=0.0 & 当 x>0.0 && y>0.0 && z>0.0 时，我想将时间存储为“dateString”，将时间存储为“dateString1”。如果满足条件，我无法计时，因为它占用了我手机的当前时间。它一直在运行，所以无法在事件发生时获得时间，解决方案是什么？

示例 - 如果我的手机处于静止状态，陀螺仪传感器将提供 x=0.0,y=0.0,z=0.0 如果读数在三个小时内仍然相同。假设这是手机 sleep 的开始时间。当阅读在 x、y、z 方面突然发生变化时，就是起床时间。

如何检测这种情况( sleep 开始时间和唤醒时间)？

下面的代码正在检测陀螺仪读数 x , y , z 当它静止时它分别显示 0.0,0.0,0.0 。

当 pic up x,y,z 的 phone 值只增加那么我们如何添加代码来检测时间如上场景。

    import android.app.Activity;
    import android.content.Context;
    import android.hardware.Sensor;
    import android.hardware.SensorEvent;
    import android.hardware.SensorEventListener;
    import android.hardware.SensorManager;
    import android.os.Bundle;
    import android.widget.TextView;

    import java.text.SimpleDateFormat;
    import java.util.Calendar;

   public class Main extends Activity {
    Dbhelper myDb;
    //variable for x,y,z
    TextView textX, textY, textZ;
Button ButtonView,ButtonAdd;
    TextView text1,text2,text3,text4 ;
    SensorManager sensorManager;
    Sensor sensor;


    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        myDb =new Dbhelper(this);

        sensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
        sensor = sensorManager.getDefaultSensor(Sensor.TYPE_GYROSCOPE);

        textX = (TextView) findViewById(R.id.textX);
        textY = (TextView) findViewById(R.id.textY);
        textZ = (TextView) findViewById(R.id.textZ);
        text1 = (TextView) findViewById(R.id.text1);
        text2 = (TextView) findViewById(R.id.text2);
        text3 = (TextView) findViewById(R.id.text3);
        text4 = (TextView) findViewById(R.id.text4);
        ButtonView=(Button)findViewById(R.id.button_view);
        ButtonAdd=(Button)findViewById(R.id.button_add);
        AddData();
        viewAll();
    }




    public  void AddData() {
        ButtonAdd.setOnClickListener(
                new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {

                        boolean isInserted = myDb.insertData(text1.getText().toString(), textX.getText().toString(),
                                textY.getText().toString(),
                                textZ.getText().toString());
                        if (isInserted == true)
                            Toast.makeText(Main.this, "Data Inserted", Toast.LENGTH_LONG).show();
                        else
                            Toast.makeText(Main.this, "Data not Inserted", Toast.LENGTH_LONG).show();
                    }
                }
        );
}

    public void viewAll() {
        ButtonView.setOnClickListener(
                new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        Cursor res = myDb.getAllData();
                        if(res.getCount() == 0) {
                            // show message
                            showMessage("Error","Nothing found");
                            return;
                        }

                        StringBuffer buffer = new StringBuffer();
                        while (res.moveToNext()) {
                            buffer.append("ID :"+ res.getString(0)+"\n");
                            buffer.append("TIME :"+res.getString(1)+"\n");
                            buffer.append("X :"+ res.getString(2)+"\n");
                            buffer.append("Y :"+ res.getString(3)+"\n");
                            buffer.append("Z :"+ res.getString(4)+"\n\n");
                        }
                        // Show all data
                        showMessage("Data",buffer.toString());
                    }
                }
        );
    }

    public void showMessage(String title,String Message){
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setCancelable(true);
        builder.setTitle(title);
        builder.setMessage(Message);
        builder.show();
    }

    public void onResume() {
        super.onResume();
        sensorManager.registerListener(gyroListener, sensor,SensorManager.SENSOR_DELAY_NORMAL);
    }

    public void onStop() {
        super.onStop();
        sensorManager.unregisterListener(gyroListener);
    }

    public SensorEventListener gyroListener = new SensorEventListener() {
        public void onAccuracyChanged(Sensor sensor, int acc) { }

        public void onSensorChanged(SensorEvent event) {
            long timeStamp = event.timestamp;
            double x = event.values[0];
            x=(double)Math.round(x * 10d) / 10d;
            //x=Math.round(2);
            double y = event.values[1];
            y=(double)Math.round(y * 10d) / 10d;
            double z = event.values[2];
            z=(double)Math.round(z * 10d) / 10d;

            textX.setText("X : " + x );
            textY.setText("Y : " + y );
            textZ.setText("Z : " + z );

            Calendar c2 = Calendar.getInstance();
            SimpleDateFormat sdf1 = new SimpleDateFormat("HH:mm:ss");
            String dateString1 =sdf1.format(c2.getTime());

            int timeOfDay = c2.get(Calendar.HOUR_OF_DAY);
            c2.getTime();




            Calendar c1 = Calendar.getInstance();

            SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");
            String dateString =sdf.format(c1.getTime());

            int timeOfDay1 = c1.get(Calendar.HOUR_OF_DAY);
            c1.getTime();



            if(timeOfDay >= 11 && timeOfDay <= 20 && x==0 && y==0 && z==0)

                text1.setText("phone is not moving" + dateString);

            else if

                (timeOfDay1 >= 11 && timeOfDay1 <= 20 && x>0 || y>0 || z>0)

                text2.setText("phone is just moved " + dateString1);


            else if(timeOfDay >= 11 && timeOfDay <= 20 )

            text3.setText("Were phone asleep between "+ dateString  + "&" + dateString1);

        }
    };
}

主.xml

    <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center" >

    <TextView
        android:id="@+id/textX"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="30sp" 
        android:text="" />
    <TextView
        android:id="@+id/textY"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="20sp" 
        android:textSize="30sp" 
        android:text="" />
    <TextView
        android:id="@+id/textZ"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="20sp" 
        android:textSize="30sp" 
        android:text="" />

    <TextView
        android:id="@+id/text1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="20sp"
        android:textSize="30sp"
        android:text="" />

    <TextView
        android:id="@+id/text2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="20sp"
        android:textSize="30sp"
        android:text="" />

    <TextView
        android:id="@+id/text3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="20sp"
        android:textSize="30sp"
        android:text="" />
</LinearLayout>

注意:请不要告诉 Timestamp 是我已经尝试过的解决方案。

Answer 1

在 SensorEventListener 中，您可以使用回调参数 SensorEvent 事件 使用以下代码获取时间戳，

long timeStamp = event.timestamp;

注意:event.timestamp 会返回 long。

编辑:根据您的评论更新了答案。

要检查设备是否超过三个小时没有移动，请使用以下代码..

在类的全局变量中初始化 long lastTimeStamp = 0;。

SensorEventListener sensorEventListener = new SensorEventListener() {
            @Override
            public void onSensorChanged(SensorEvent event) {
                float x = event.values[0];
                float y = event.values[1];
                float z = event.values[2];
                if(Math.round(x) == 0 && Math.round(y) == 0 && Math.round(z) == 0) {
                    //device didn't move - store current timestamp
                    lastTimeStamp = event.timestamp;
                } else {
                    //below if condition is to check if device hasn't been idle 
                    if (lastTimeStamp == 0) {
                        return;
                    }

                    //(3 * 60 * 60 * 1000) checks if device wasn't moved for more than 3 hours
                    if ((event.timestamp - lastTimeStamp) > (3 * 60 * 60 * 1000)) {
                        //code goes here 
                    }
                    lastTimeStamp = 0;
                }
            }

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

            }
        };

希望这能让人更清楚。