vistaでandroid studio その15

# 概要
vistaでandroid studio 1.0.1やってみた。
センサー使ってみた。

# 写真

![device-2022-09-04-065255.png](https://qiita-image-store.s3.ap-northeast-1.amazonaws.com/0/18104/1b235462-70db-be04-608f-b48eb5159da0.png)


# サンプルコード

```
package com.ohisamallc.ohiapp154.ohiapp154;

import android.content.Context;
import android.content.Intent;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.media.AudioFormat;
import android.media.AudioManager;
import android.media.AudioTrack;
import android.net.Uri;
import android.opengl.EGL14;
import android.opengl.GLES10;
import android.opengl.GLES20;
import android.opengl.GLSurfaceView;
import android.os.AsyncTask;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.util.AttributeSet;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.view.View;
import android.widget.Toast;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.FloatBuffer;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Random;

import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;
import javax.net.ssl.HttpsURLConnection;

public class MainActivity extends ActionBarActivity {
    private final String TAG = "SensorTest";
    private SensorManager mSensorManager;
    private Sensor mSensor;
    private SampleView mView;
    private float[] mValues;
    private static class RunAve {
        private final float[] mWeights;
        private final float mWeightScale;
        private final float[] mSamples;
        private final int mDepth;
        private int mCurr;
        public RunAve(float[] weights) {
            mWeights = weights;
            float sum = 0;
            for (int i = 0; i < weights.length; i++)
            {
                sum += weights[i];
            }
            mWeightScale = 1 / sum;
            mDepth = weights.length;
            mSamples = new float[mDepth];
            mCurr = 0;
        }
        public void addSample(float value) {
            mSamples[mCurr] = value;
            mCurr = (mCurr + 1) % mDepth;
        }
        public float computeAve() {
            final int depth = mDepth;
            int index = mCurr;
            float sum = 0;
            for (int i = 0; i < depth; i++)
            {
                sum += mWeights[i] * mSamples[index];
                index -= 1;
                if (index < 0)
                {
                    index = depth - 1;
                }
            }
            return sum * mWeightScale;
        }
    };
    private final SensorEventListener mListener = new SensorEventListener() {
        private final float[] mScale = new float[] {
                2, 2.5f, 0.5f
        };
        // accel
        private float[] mPrev = new float[3];
        private long mLastGestureTime;
        public void onSensorChanged(SensorEvent event) {
            boolean show = false;
            float[] diff = new float[3];
            for (int i = 0; i < 3; i++)
            {
                diff[i] = Math.round(mScale[i] * (event.values[i] - mPrev[i]) * 0.45f);
                if (Math.abs(diff[i]) > 0)
                {
                    show = true;
                }
                mPrev[i] = event.values[i];
            }
            if (show)
            {
                // only shows if we think the delta is big enough, in an attempt
                // to detect "serious" moves left/right or up/down
                Log.e(TAG, "sensorChanged " + event.sensor.getName() + " (" + event.values[0] + ", " + event.values[1] + ", " + event.values[2] + ")" + " diff(" + diff[0] + " " + diff[1] + " " + diff[2] + ")");
            }
            long now = android.os.SystemClock.uptimeMillis();
            if (now - mLastGestureTime > 1000)
            {
                mLastGestureTime = 0;
                float x = diff[0];
                float y = diff[1];
                boolean gestX = Math.abs(x) > 3;
                boolean gestY = Math.abs(y) > 3;
                if ((gestX || gestY) && !(gestX && gestY))
                {
                    if (gestX)
                    {
                        if (x < 0)
                        {
                            Log.e("test", "<<<<<<<< LEFT <<<<<<<<<<<<");
                        }
                        else
                        {
                            Log.e("test", ">>>>>>>>> RITE >>>>>>>>>>>");
                        }
                    }
                    else
                    {
                        if (y < -2)
                        {
                            Log.e("test", "<<<<<<<< UP <<<<<<<<<<<<");
                        }
                        else
                        {
                            Log.e("test", ">>>>>>>>> DOWN >>>>>>>>>>>");
                        }
                    }
                    mLastGestureTime = now;
                }
            }
        }
        public void onAccuracyChanged(Sensor sensor, int accuracy) {
        }
    };
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mSensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
        mSensor = mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
        mView = new SampleView(this);
        setContentView(mView);
        if (false)
            Log.d(TAG, "create " + mSensorManager);


    }
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        int id = item.getItemId();
        if (id == R.id.action_settings)
        {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
    @Override
    protected void onResume() {
        super.onResume();
        mSensorManager.registerListener(mListener, mSensor, SensorManager.SENSOR_DELAY_FASTEST);
        if (false)
            Log.d(TAG, "resume " + mSensorManager);
    }
    @Override
    protected void onStop() {
        mSensorManager.unregisterListener(mListener);
        super.onStop();
        if (false)
            Log.d(TAG, "stop " + mSensorManager);
    }
    private class SampleView extends View {
        private Paint mPaint = new Paint();
        private Path mPath = new Path();
        private boolean mAnimate;
        public SampleView(Context context) {
            super(context);
            // Construct a wedge-shaped path
            mPath.moveTo(0, -50);
            mPath.lineTo(-20, 60);
            mPath.lineTo(0, 50);
            mPath.lineTo(20, 60);
            mPath.close();
        }
        @Override
        protected void onDraw(Canvas canvas) {
            Paint paint = mPaint;
            canvas.drawColor(Color.WHITE);
            paint.setAntiAlias(true);
            paint.setColor(Color.BLACK);
            paint.setStyle(Paint.Style.FILL);
            int w = canvas.getWidth();
            int h = canvas.getHeight();
            int cx = w / 2;
            int cy = h / 2;
            canvas.translate(cx, cy);
            if (mValues != null)
            {
                canvas.rotate(-mValues[0]);
            }
            canvas.drawPath(mPath, mPaint);
        }
        @Override
        protected void onAttachedToWindow() {
            mAnimate = true;
            if (false)
                Log.d(TAG, "onAttachedToWindow. mAnimate=" + mAnimate);
            super.onAttachedToWindow();
        }
        @Override
        protected void onDetachedFromWindow() {
            mAnimate = false;
            if (false)
                Log.d(TAG, "onAttachedToWindow. mAnimate=" + mAnimate);
            super.onDetachedFromWindow();
        }
    }

}





```


以上。