android5.xで加速度センサーの値を取得してグラフで表示

加速度センサーの値を取得できるようにしたけど

振った時と降っていない時の値の変化がわかりにくい
のでグラフで表示して表示してみる

実装

build.gradle

apply plugin: 'com.android.application'

android {
    compileSdkVersion 22
    buildToolsVersion "21.1.2"

    defaultConfig {
        applicationId "jp.mshige1979.app.samplesensor04"
        minSdkVersion 21
        targetSdkVersion 22
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile files('libs/afreechart-0.0.4.jar')
}

https://code.google.com/p/afreechart/downloads/listでダウンロードしたものを配置しておく

activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
    android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity"
    android:id="@+id/layout1">

    <LinearLayout
        android:orientation="horizontal"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_alignParentStart="true">

        <jp.mshige1979.app.samplesensor04.GraphView
            android:id="@+id/graphView1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />

    </LinearLayout>


</RelativeLayout>

MainActivity

package jp.mshige1979.app.samplesensor04;

import android.app.Activity;
import android.graphics.Color;
import android.graphics.Typeface;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;

import org.afree.chart.AFreeChart;
import org.afree.chart.ChartFactory;
import org.afree.chart.axis.ValueAxis;
import org.afree.chart.plot.PlotOrientation;
import org.afree.chart.plot.XYPlot;
import org.afree.data.xy.XYSeries;
import org.afree.data.xy.XYSeriesCollection;
import org.afree.graphics.SolidColor;
import org.afree.graphics.geom.Font;
import org.w3c.dom.Text;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;


public class MainActivity extends Activity {

    // センサーマネージャー
    private SensorManager manager;

    // センサーイベントリスナー
    private SensorEventListener listener;

    Handler handler;
    GraphView spcv = null;

    // 今回の加速度
    private float fAccell[] = new float[3];

    private float gravity[] = { 0.0f, 0.0f, 0.0f };
    private float[] linear_acceleration = { 0.0f, 0.0f, 0.0f };

    private final float alpha = 0.8f;
    private RelativeLayout layout1 = null;

    private List list = new ArrayList<HashMap<String, Float>>();

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

        layout1 = (RelativeLayout)findViewById(R.id.layout1);

        // センサーマネージャーを取得
        manager = (SensorManager)getSystemService(SENSOR_SERVICE);

        // センサーのイベントリスナーを登録
        listener = new SensorEventListener() {

            // 値変更時
            @Override
            public void onSensorChanged(SensorEvent sensorEvent) {

                // センサーの種類で値を取得
                switch( sensorEvent.sensor.getType()) {
                    // 加速度
                    case Sensor.TYPE_ACCELEROMETER:
                        fAccell = sensorEvent.values.clone();

                        gravity[0] = alpha * gravity[0] + (1 - alpha) * fAccell[0];
                        gravity[1] = alpha * gravity[1] + (1 - alpha) * fAccell[1];
                        gravity[2] = alpha * gravity[2] + (1 - alpha) * fAccell[2];

                        linear_acceleration[0] = fAccell[0] - gravity[0];
                        linear_acceleration[1] = fAccell[1] - gravity[1];
                        linear_acceleration[2] = fAccell[2] - gravity[2];

                        layout1.setBackgroundColor(Color.TRANSPARENT);
                        if(linear_acceleration[0] >= 1.5f){
                            layout1.setBackgroundColor(Color.BLUE);
                        }
                        if(linear_acceleration[1] >= 1.5f){
                            layout1.setBackgroundColor(Color.YELLOW);
                        }
                        if(linear_acceleration[2] >= 1.5f){
                            layout1.setBackgroundColor(Color.GREEN);
                        }

                        HashMap<String, Float> map = new HashMap<String, Float>();

                        if(list.size() > 100){
                            list.remove(0);
                        }

                        map.put("x", (linear_acceleration[0]));
                        map.put("y", (linear_acceleration[1]));
                        map.put("z", (linear_acceleration[2]));
                        list.add(map);


                        break;
                }

            }

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

            }
        };

        // Graph
        spcv = (GraphView) findViewById(R.id.graphView1);

        handler = new Handler();
        Thread repaintThread = new Thread(new Runnable() {
            public void run() {
                while (true) {
                    handler.post(new Runnable() {
                        public void run() {
                            // repaint();
                            XYSeriesCollection dataset = new XYSeriesCollection();
                            XYSeries series1 = new XYSeries("X");
                            XYSeries series2 = new XYSeries("Y");
                            XYSeries series3 = new XYSeries("Z");

                            for(int i=0;i<list.size();i++){
                                HashMap<String, Float> item = (HashMap<String, Float>)list.get(i);
                                float x = Float.parseFloat(item.get("x").toString());
                                float y = Float.parseFloat(item.get("y").toString());
                                float z = Float.parseFloat(item.get("z").toString());

                                series1.add(i+1, x);
                                series2.add(i+1, y);
                                series3.add(i+1, z);
                            }

                            dataset.addSeries(series1);
                            dataset.addSeries(series2);
                            dataset.addSeries(series3);

                            // chart
                            AFreeChart chart = ChartFactory.createXYLineChart(
                                    "加速度",
                                    "時間",
                                    "加速度",
                                    dataset,
                                    PlotOrientation.VERTICAL,
                                    false,
                                    true,
                                    false
                            );

                            // XY軸の加工
                            XYPlot plot = chart.getXYPlot();
                            ValueAxis xAxis = plot.getDomainAxis();
                            ValueAxis yAxis = plot.getRangeAxis();
                            yAxis.setRange(-3, 3);

                            // tickラベルのフォントを変更
                            Font xyTitleFont = new Font(Typeface.SANS_SERIF, Typeface.BOLD, 30);
                            xAxis.setTickLabelFont(xyTitleFont);
                            yAxis.setTickLabelFont(xyTitleFont);

                            // chartの背景と枠線を変更
                            chart.setBackgroundPaintType(new SolidColor(Color.GRAY));//背景の色
                            chart.setBorderPaintType(new SolidColor(Color.BLACK));//枠線の色

                            // チャートに設定して再描画
                            spcv.setChart(chart);
                            spcv.postInvalidate();
                        }
                    });
                    try {
                        // 500ミリ秒
                        Thread.sleep(500);
                    } catch (InterruptedException e) {
                        // TODO 自動生成された catch ブロック
                        e.printStackTrace();
                    }
                }
            }
        });
        repaintThread.start();

    }

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

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

    @Override
    protected void onResume() {
        super.onResume();

        // リスナー設定：加速度
        manager.registerListener(
                listener,
                manager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER),
                SensorManager.SENSOR_DELAY_UI);

    }


    @Override
    protected void onPause() {
        super.onPause();

        // リスナー解除
        manager.unregisterListener(listener);
    }
}

GraphView

package jp.mshige1979.app.samplesensor04;

import android.content.Context;
import android.graphics.Canvas;
import android.util.AttributeSet;
import android.view.View;

import org.afree.chart.AFreeChart;
import org.afree.graphics.geom.RectShape;

/**
 */
public class GraphView extends View {

    private AFreeChart chart;
    private RectShape chartArea;

    public GraphView(Context context, AttributeSet attrs) {
        super(context, attrs);
        // TODO Auto-generated constructor stub
        chartArea = new RectShape();
    }

    @Override
    protected void onSizeChanged(int w, int h, int oldw, int oldh) {
        super.onSizeChanged(w, h, oldw, oldh);
        chartArea.setWidth(w);
        chartArea.setHeight(h - (h / 5));
    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        this.chart.draw(canvas, chartArea);
    }

    public void setChart(AFreeChart chart) {
        this.chart = chart;
    }
}