StartActivity.java

package com.movisens.gattsensorexample.activities;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.Window;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

import com.movisens.gattsensorexample.R;
import com.movisens.gattsensorexample.application.App;
import com.movisens.gattsensorexample.events.MeasurementStatus;
import com.movisens.gattsensorexample.events.MeasurementStatus.SensorState;
import com.movisens.gattsensorexample.model.CurrentSensorData;
import com.movisens.gattsensorexample.services.SamplingService;
import com.movisens.smartgattlib.characteristics.BatteryLevel;

import de.greenrobot.event.EventBus;

public class StartActivity extends Activity {

    SamplingService mService;
    boolean mBound = false;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        getWindow().requestFeature(Window.FEATURE_ACTION_BAR);

        this.setContentView(R.layout.start_activity);
        Button startSampling = (Button) this.findViewById(R.id.startSampling);
        startSampling.setOnClickListener(new View.OnClickListener() {
            public void onClick(View view) {
                SamplingService.start(App.app());
                updateButtons();
            }
        });
        Button stopSampling = (Button) this.findViewById(R.id.stopSampling);
        stopSampling.setOnClickListener(new View.OnClickListener() {
            public void onClick(View view) {
                SamplingService.stop(App.app(), false);
                updateButtons();
            }
        });
    }

    @Override
    public void onResume() {
        super.onResume();
        EventBus.getDefault().register(this);
        updateButtons();
        updateSensorData(App.app().getCurrentSensorData());
        updateBatteryLevel(App.app().getCurrentBatteryLevel());
    }

    @Override
    public void onPause() {
        super.onPause();
        EventBus.getDefault().unregister(this);
        finish();
    }

    public void onEventMainThread(CurrentSensorData sensorData) {
        updateSensorData(sensorData);
    }

    private void updateSensorData(CurrentSensorData sensorData) {
        TextView movementAcceleration = ((TextView) this
                .findViewById(R.id.movementAcceleration));
        TextView metLevel = ((TextView) this
                .findViewById(R.id.metLevel));
        TextView stepCount = ((TextView) this
                .findViewById(R.id.stepCount));

        if (sensorData != null) {
            movementAcceleration.setText(getString(
                    R.string.movement_acceleration_desc,
                    sensorData.movementAcceleration));

            if (sensorData.metLevel != null) {
                metLevel.setText(getString(
                        R.string.metLevel_desc,
                        sensorData.metLevel.getSedetaryValue(),
                        sensorData.metLevel.getLightValue(),
                        sensorData.metLevel.getModerateValue(),
                        sensorData.metLevel.getVigorousValue()
                ));
            }else {
                metLevel.setText(getString(R.string.waiting));
            }

            if (sensorData.stepCount != null) {
                stepCount.setText(getString(
                        R.string.stepCount_desc,
                        sensorData.stepCount.getValue()));
            }else {
                stepCount.setText(getString(R.string.waiting));
            }
        } else {
            movementAcceleration.setText(getString(R.string.waiting));
            stepCount.setText(getString(R.string.waiting));
            metLevel.setText(getString(R.string.waiting));
        }
    }

    public void onEventMainThread(BatteryLevel batteryLevel) {
        updateBatteryLevel(batteryLevel);
    }

    public void onEventMainThread(MeasurementStatus measurementStatus) {
        if (measurementStatus.measurementEnabled == SensorState.False
                && measurementStatus.dataAvailable == SensorState.True) {
            SamplingService.stop(this, false);
            Toast.makeText(
                    this,
                    "Measurement can't be started, because there is already a measurement on the sensor",
                    Toast.LENGTH_LONG).show();
        }
        updateButtons();
    }

    private void updateBatteryLevel(BatteryLevel batteryLevel) {
        TextView batteryLevelText = (TextView) this
                .findViewById(R.id.batteryLevel);
        if (batteryLevel == null) {
            batteryLevelText
                    .setText(getString(R.string.battery_level_desc, "?"));
        } else {
            batteryLevelText.setText(getString(R.string.battery_level_desc,
                    batteryLevel.getBatteryLevel()));
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        MenuItem actionItem = menu.add("Preferences");
        actionItem.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
        actionItem.setIcon(android.R.drawable.ic_menu_preferences);

        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        Intent launchPreferencesIntent = new Intent().setClass(this,
                Preferences.class);

        startActivity(launchPreferencesIntent);
        return true;
    }

    private void updateButtons() {
        Button startSampling = (Button) this.findViewById(R.id.startSampling);
        Button stopSampling = (Button) this.findViewById(R.id.stopSampling);
        TextView sensorName = (TextView) this.findViewById(R.id.sensor_name);
        if (App.app().isSamplingRunning()) {
            startSampling.setVisibility(View.GONE);
            stopSampling.setVisibility(View.VISIBLE);
        } else {
            startSampling.setVisibility(View.VISIBLE);
            stopSampling.setVisibility(View.GONE);
        }
        if (App.app().isSensorSelected()) {
            startSampling.setEnabled(true);
            stopSampling.setEnabled(true);
        } else {
            startSampling.setEnabled(false);
            stopSampling.setEnabled(false);
        }

        sensorName.setText(App.app().getSensor());
    }
}