Android Open Source - androidtool Sensor Detail Activity

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License

The source code is released under:

MIT License

Java Source Code

package org.chris.android.tool.sensor;
//from w w  w .  j  av a2 s.c  om
import android.app.Activity;
import android.hardware.Sensor;
import android.os.Bundle;
import android.support.v4.app.NavUtils;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.LinearLayout;
import android.widget.TextView;

import com.jjoe64.graphview.GraphView;
import com.jjoe64.graphview.GraphViewSeries;
import com.jjoe64.graphview.LineGraphView;

import org.chris.android.tool.R;

import java.util.Locale;

public class SensorDetailActivity extends Activity {

    public static final String EXTRA_SENSOR_TYPE = "EXTRA_SENSOR_TYPE";
    private SensorService sensorService;
    private GraphViewSeries sensorSeries;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_sensor_detail);
        // Show the Up button in the action bar.
        setupActionBar();

        int sensorType = getIntent().getIntExtra(EXTRA_SENSOR_TYPE, Integer.MIN_VALUE);
        if (sensorType == Integer.MIN_VALUE) {
            throw new IllegalArgumentException("Did not find extra '" + EXTRA_SENSOR_TYPE + "' in intent");
        }
        sensorService = new SensorService(getApplicationContext(), sensorType);
        updateSensorDetails();
        registerSensorUpdateListener();
        createSensorDataGraph();
    }

    private void createSensorDataGraph() {
        sensorSeries = new GraphViewSeries(new GraphView.GraphViewData[0]);

        GraphView graphView = new LineGraphView(this, "Sensor data");
        graphView.addSeries(sensorSeries);
        graphView.setScrollable(true);

        LinearLayout layout = (LinearLayout) findViewById(R.id.sensor_graph);
        layout.addView(graphView);
    }

    private void registerSensorUpdateListener() {
        sensorService.listenForSensorUpdates(new SensorService.SensorServiceListener() {
            @Override
            public void sensorUpdated(final int updateCount, final int accurracy, final long timestamp, final float[]
                    values) {
                fillTextView(R.id.sensor_event_info, R.string.sensor_event_info, updateCount, accurracy);
                fillTextView(R.id.sensor_last_value, formatSensorValues(values));
                sensorSeries.appendData(new GraphView.GraphViewData(updateCount, values[0]), false, 500);
            }
        });
    }

    private String formatSensorValues(final float[] values) {
        StringBuilder b = new StringBuilder();
        for (float value : values) {
            b.append(String.format(Locale.getDefault(), "%1.5f", value));
            b.append('\n');
        }
        return b.toString();
    }

    private void updateSensorDetails() {
        Sensor sensor = sensorService.getSensor();
        fillTextView(R.id.sensor_name, R.string.sensor_name, sensor.getName());
        fillTextView(R.id.sensor_power, R.string.sensor_power, sensor.getPower());
        SensorType sensorType = SensorType.forId(sensor.getType());
        fillTextView(R.id.sensor_type, R.string.sensor_type, sensorType != null ? sensorType.name() : null,
                sensor.getType());
        fillTextView(R.id.sensor_vendor, R.string.sensor_vendor, sensor.getVendor());
        fillTextView(R.id.sensor_version, R.string.sensor_version, sensor.getVersion());
        fillTextView(R.id.sensor_batch_info, R.string.sensor_batch_info, sensor.getFifoMaxEventCount(),
                sensor.getFifoReservedEventCount());
        fillTextView(R.id.sensor_delay, R.string.sensor_delay, sensor.getMinDelay());
        fillTextView(R.id.sensor_range, R.string.sensor_range, sensor.getResolution(), sensor.getMaximumRange());
    }

    private void fillTextView(int textViewId, int stringId, Object... formatArgs) {
        fillTextView(textViewId, getString(stringId, formatArgs));
    }

    private void fillTextView(int textViewId, String value) {
        TextView text = (TextView) findViewById(textViewId);
        text.setText(value);
    }

    /**
     * Set up the {@link android.app.ActionBar}.
     */
    private void setupActionBar() {
        if (getActionBar() != null) {
            getActionBar().setDisplayHomeAsUpEnabled(true);
        }
    }

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

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case android.R.id.home:
                // This ID represents the Home or Up button. In the case of this
                // activity, the Up button is shown. Use NavUtils to allow users
                // to navigate up one level in the application structure. For
                // more details, see the Navigation pattern on Android Design:
                //
                // http://developer.android.com/design/patterns/navigation.html#up-vs-back
                //
                NavUtils.navigateUpFromSameTask(this);
                return true;
        }
        return super.onOptionsItemSelected(item);
    }

    @Override
    public void onPause() {
        super.onPause();
        sensorService.onPause();
    }

    @Override
    public void onResume() {
        super.onResume();
        sensorService.onResume();
    }
}

Java Source Code List

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