質問編集履歴
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書式変更,質問も変更させていただきました.
test
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### 前提・実現したいこと
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加速度センサと地磁気センサを利用してデバイスの方位を取得し,
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加速度センサと地磁気センサを利用してデバイスの方位を取得し,ログを表示したいです.
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しかしログには方位角がずっと0.0のままになってしまっています・
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問題点が分からず困っています.
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エラーメッセージがでなく,問題点が分からず困っています.
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初心者ですがよろしくお願いいたします.
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@@ -18,51 +20,35 @@
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import androidx.appcompat.app.AppCompatActivity;
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import android.app.Activity;
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import android.content.pm.ActivityInfo;
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import android.graphics.Color;
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import android.hardware.Sensor;
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import android.hardware.SensorEvent;
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import android.hardware.SensorEventListener;
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import android.hardware.SensorListener;
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import android.hardware.SensorManager;
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import android.net.sip.SipSession;
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import android.os.Bundle;
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import android.util.Log;
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import android.view.View;
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import android.widget.Button;
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import android.widget.TextView;
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public class MainActivity extends Activity
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public class MainActivity extends Activity
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implements SensorEventListener {
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private SensorManager sensorManager;
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private TextView
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private TextView textview;
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private SensorEventListener
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private SensorEventListener listener;
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@@ -76,123 +62,163 @@
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sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);
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}
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}
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@Override
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protected void onResume() {
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super.onResume();
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//センサー登録
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sensorManager.registerListener(
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this,
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sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER),
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SensorManager.SENSOR_DELAY_UI);
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sensorManager.registerListener(
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this,
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sensorManager.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD),
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SensorManager.SENSOR_DELAY_UI);
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}
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@Override
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protected void onPause() {
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// 解除
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sensorManager.unregisterListener((SensorEventListener) this);
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super.onPause();
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}
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public void onSensorChanged(SensorEvent event) {
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float[]faccel;
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float[]fmagnetic;
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faccel=new float[3];
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fmagnetic=new float[3];
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switch (event.sensor.getType()) {
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//加速度センサーの値取得
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case Sensor.TYPE_ACCELEROMETER:
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faccel = event.values.clone();
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break;
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//地磁気センサーの値取得
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case Sensor.TYPE_MAGNETIC_FIELD:
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fmagnetic = event.values.clone();
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break;
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}
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if (fmagnetic != null && faccel != null) {
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float[] orientation = new float[3];
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float R[] = new float[16];
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float I[] = new float[16];
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//加速度センサー、地磁気センサーの値を元に、回転行列を計算する
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SensorManager.getRotationMatrix(R, I, faccel, fmagnetic);
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//デバイスの向きに応じて回転行列を計算する
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SensorManager.getOrientation(R, orientation);
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//ラジアンから角度へ変換
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float angle = (float) Math.floor(Math.toDegrees(orientation[0]));
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//角度の範囲を0~360度へ調整
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if (angle >= 0) {
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orientation[0] = angle;
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} else if (angle < 0) {
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orientation[0] = 360 + angle;
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}
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//得られた角度を画面へ表示
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//
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//角度を画面に表示
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//String buf =
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//String.format("方位角\n\t%f\n",orientation[0]);
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//textview.setText(buf);
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Log.d("**orientationDegrees","方位角:"+orientation[0]);
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}
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public void onSensorChanged(SensorEvent event) {
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switch(event.sensor.getType()){
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case Sensor.TYPE_ACCELEROMETER:
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faccel = event.values.clone();
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break;
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case Sensor.TYPE_MAGNETIC_FIELD:
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fmagnetic = event.values.clone();
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break;
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}
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@Override
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public void onAccuracyChanged(Sensor sensor, int i) {
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float[]I = new float[16];
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//回転行列の計算
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SensorManager.getRotationMatrix(R,I,faccel,fmagnetic);
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//向きに応じて回転行列を計算
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SensorManager.getOrientation(R,orientation);
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//ラジアンから角度に変換
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float angle = (float)Math.floor(Math.toDegrees(orientation[0]));
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//角度の範囲を0~360度に
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if(angle >=0){
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orientation[0] = angle;
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}
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else if (angle < 0){
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orientation[0] = 360 + angle;
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}
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//角度を画面に表示
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String buf =
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String.format("方位角\n\t%f\n",orientation[0]);
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TextView.setText(buf);
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}
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}
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