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      1 /*
      2  * Copyright (C) 2014 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License
     15  */
     16 
     17 package com.android.cts.verifier.sensors;
     18 
     19 import android.app.AlertDialog;
     20 import android.content.Context;
     21 import android.hardware.Sensor;
     22 import android.hardware.SensorEvent;
     23 import android.hardware.SensorEventListener;
     24 import android.hardware.SensorManager;
     25 import android.os.Bundle;
     26 import android.view.View;
     27 import android.widget.TextView;
     28 
     29 import com.android.cts.verifier.PassFailButtons;
     30 import com.android.cts.verifier.R;
     31 
     32 /**
     33  * CTS Verifier case for verifying correct integration of heart rate monitor.
     34  * If a user is wearing a device with an HRM, the value is between <> and <>
     35  */
     36 public class HeartRateMonitorTestActivity extends PassFailButtons.Activity {
     37     private SensorManager mSensorManager;
     38     private Sensor mSensor;
     39     private SensorListener mSensorListener;
     40     private AlertDialog mNoHeartRateWarningDialog;
     41     private TextView mSensorText;
     42 
     43     @Override
     44     protected void onCreate(Bundle savedInstanceState) {
     45         super.onCreate(savedInstanceState);
     46         setContentView(R.layout.snsr_hrm);
     47         setInfoResources(R.string.snsr_heartrate_test, R.string.snsr_heartrate_test_info, 0);
     48         setPassFailButtonClickListeners();
     49 
     50         mSensorText = (TextView) findViewById(R.id.sensor_value);
     51 
     52         mSensorManager = (SensorManager) getApplicationContext().getSystemService(
     53                 Context.SENSOR_SERVICE);
     54         mSensor = mSensorManager.getDefaultSensor(Sensor.TYPE_HEART_RATE);
     55         mSensorListener = new SensorListener();
     56     }
     57 
     58     @Override
     59     protected void onResume() {
     60         super.onResume();
     61         if (!mSensorManager.registerListener(mSensorListener, mSensor,
     62                 SensorManager.SENSOR_DELAY_UI)) {
     63             showNoHeartRateWarningDialog();
     64             setTestResultAndFinish(true);
     65         }
     66     }
     67 
     68     @Override
     69     protected void onPause() {
     70         super.onPause();
     71         mSensorManager.unregisterListener(mSensorListener, mSensor);
     72     }
     73 
     74     private void showNoHeartRateWarningDialog() {
     75         if (mNoHeartRateWarningDialog == null) {
     76             mNoHeartRateWarningDialog = new AlertDialog.Builder(this)
     77                     .setIcon(android.R.drawable.ic_dialog_alert)
     78                     .setTitle(R.string.snsr_heartrate_test_no_heartrate_title)
     79                     .setMessage(R.string.snsr_heartrate_test_no_heartrate_message)
     80                     .setPositiveButton(android.R.string.ok, null)
     81                     .create();
     82         }
     83         if (!mNoHeartRateWarningDialog.isShowing()) {
     84             mNoHeartRateWarningDialog.show();
     85         }
     86     }
     87 
     88     private class SensorListener implements SensorEventListener {
     89         private static final double MIN_HEART_RATE = 40;
     90         private static final double MAX_HEART_RATE = 200;
     91         @Override
     92         public void onSensorChanged(SensorEvent sensorEvent) {
     93             float value = sensorEvent.values[0];
     94             if (value > MAX_HEART_RATE || value < MIN_HEART_RATE) {
     95                 updateWidgets(value, sensorEvent.accuracy, R.drawable.fs_error);
     96             } else {
     97                 updateWidgets(value, sensorEvent.accuracy, R.drawable.fs_good);
     98             }
     99         }
    100 
    101         void updateWidgets(float value, float accuracy, int icon) {
    102             TextView sensorText = (TextView) findViewById(R.id.sensor_value);
    103             TextView sensorAccuracyText = (TextView) findViewById(R.id.sensor_accuracy_value);
    104 
    105             sensorText.setText(String.format("%+.2f", value));
    106             sensorText.setCompoundDrawablesWithIntrinsicBounds(0, 0, icon, 0);
    107             sensorAccuracyText.setText(String.format("%+.2f", accuracy));
    108         }
    109 
    110         @Override
    111         public void onAccuracyChanged(Sensor sensor, int i) {
    112         }
    113     }
    114 }
    115