com.commonsware.android.sensor.monitor.MainActivity.java Source code

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Here is the source code for com.commonsware.android.sensor.monitor.MainActivity.java

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/***
  Copyright (c) 2013 CommonsWare, LLC
  Licensed under the Apache License, Version 2.0 (the "License"); you may not
  use this file except in compliance with the License. You may obtain a copy
  of the License at http://www.apache.org/licenses/LICENSE-2.0. Unless required
  by applicable law or agreed to in writing, software distributed under the
  License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS
  OF ANY KIND, either express or implied. See the License for the specific
  language governing permissions and limitations under the License.
      
  From _The Busy Coder's Guide to Android Development_
http://commonsware.com/Android
 */

package com.commonsware.android.sensor.monitor;

import android.annotation.TargetApi;
import android.app.Activity;
import android.content.Context;
import android.hardware.Sensor;
import android.hardware.SensorManager;
import android.os.Build;
import android.os.Bundle;
import android.support.v4.widget.SlidingPaneLayout;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;

public class MainActivity extends Activity implements SensorsFragment.Contract {
    private SensorManager mgr = null;
    private SensorLogFragment log = null;
    private SlidingPaneLayout panes = null;

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

        mgr = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
        log = (SensorLogFragment) getFragmentManager().findFragmentById(R.id.log);

        panes = (SlidingPaneLayout) findViewById(R.id.panes);
        panes.openPane();
    }

    @Override
    public void onPause() {
        mgr.unregisterListener(log);
        super.onPause();
    }

    @Override
    public void onBackPressed() {
        if (panes.isOpen()) {
            super.onBackPressed();
        } else {
            panes.openPane();
        }
    }

    @Override
    public List<Sensor> getSensorList() {
        List<Sensor> unfiltered = new ArrayList<Sensor>(mgr.getSensorList(Sensor.TYPE_ALL));
        List<Sensor> result = new ArrayList<Sensor>();

        for (Sensor s : unfiltered) {
            if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT || !isTriggerSensor(s)) {
                result.add(s);
            }
        }

        Collections.sort(result, new Comparator<Sensor>() {
            @Override
            public int compare(final Sensor a, final Sensor b) {
                return (a.toString().compareTo(b.toString()));
            }
        });

        return (result);
    }

    @Override
    public void onSensorSelected(Sensor s) {
        mgr.unregisterListener(log);
        mgr.registerListener(log, s, SensorManager.SENSOR_DELAY_NORMAL);
        log.init(isXYZ(s));
        panes.closePane();
    }

    @TargetApi(Build.VERSION_CODES.KITKAT)
    private boolean isXYZ(Sensor s) {
        switch (s.getType()) {
        case Sensor.TYPE_ACCELEROMETER:
        case Sensor.TYPE_GRAVITY:
        case Sensor.TYPE_GYROSCOPE:
        case Sensor.TYPE_LINEAR_ACCELERATION:
        case Sensor.TYPE_MAGNETIC_FIELD:
        case Sensor.TYPE_ROTATION_VECTOR:
            return (true);
        }

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
            if (s.getType() == Sensor.TYPE_GAME_ROTATION_VECTOR || s.getType() == Sensor.TYPE_GYROSCOPE_UNCALIBRATED
                    || s.getType() == Sensor.TYPE_MAGNETIC_FIELD_UNCALIBRATED) {
                return (true);
            }
        }

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
            if (s.getType() == Sensor.TYPE_GEOMAGNETIC_ROTATION_VECTOR) {
                return (true);
            }
        }

        return (false);
    }

    @TargetApi(Build.VERSION_CODES.KITKAT)
    private boolean isTriggerSensor(Sensor s) {
        int[] triggers = { Sensor.TYPE_SIGNIFICANT_MOTION, Sensor.TYPE_STEP_DETECTOR, Sensor.TYPE_STEP_COUNTER };

        return (Arrays.binarySearch(triggers, s.getType()) >= 0);
    }
}