Android Open Source - Sensoria Entry Adapter

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License

The source code is released under:
MIT License
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Java Source Code

package com.grocs.sensors.ui;
/*from   w w w  . j  a v  a 2s .  c om*/
import static com.grocs.sensors.common.SensorConstants.DEF_PRECISION_STR;
import static com.grocs.sensors.common.SensorConstants.PROP_PRECISION;

import java.util.Arrays;

import android.content.Context;
import android.content.SharedPreferences;
import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
import android.preference.PreferenceManager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.TextView;

import com.grocs.sensors.R;
import com.grocs.sensors.common.ISensorData;

public class EntryAdapter extends ArrayAdapter<SensorEntry> implements
        OnSharedPreferenceChangeListener {
    private static final int ITEM_TYPE_SECTION = 0;
    private static final int ITEM_TYPE_SENSOR = 1;
    private static final int ITEM_TYPE_COUNT = 2;

    // private final String TAG = this.getClass().getSimpleName();
    // Shared preferences
    private final SharedPreferences fPrefs;
    // Formatter
    private FloatFormatter fFormatter = new FloatFormatter();
    //
    LayoutInflater fVi;

    /**
     * @param context
     * @param fSM     .getSensors()
     * @param fSM
     */
    public EntryAdapter(Context context, SensorEntry[] fEntries) {
        super(context, 0, fEntries);
        // get the prefs / register ourselves as listener
        fPrefs = PreferenceManager.getDefaultSharedPreferences(context);
        fPrefs.registerOnSharedPreferenceChangeListener(this);
        //
        fVi = (LayoutInflater) getContext().getSystemService(
                Context.LAYOUT_INFLATER_SERVICE);
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        final SensorEntry sensorEntry = getItem(position);
        final int type = getItemViewType(position);
        View row = convertView;
        if (null == row) {
            if (ITEM_TYPE_SECTION == type) {
                row = fVi.inflate(R.layout.sensor_section1, parent, false);
                row.setTag(R.id.sensorTypeName, row.findViewById(R.id.sensorTypeName));
                row.setTag(R.id.sensorUnit, row.findViewById(R.id.sensorUnit));
            } else {
                row = fVi.inflate(R.layout.sensor_row1, parent, false);
                row.setTag(R.id.sensorName, row.findViewById(R.id.sensorName));
                row.setTag(R.id.values, row.findViewById(R.id.values));
            }
        }

        if (ITEM_TYPE_SECTION == type) {
            final TextView sensorTypeName = (TextView) row
                    .getTag(R.id.sensorTypeName);
            final TextView sensorUnit = (TextView) row.getTag(R.id.sensorUnit);
            //
            sensorTypeName.setText(sensorEntry.getName());
            final String unit = sensorEntry.getSensorDescription().getUnit();
            sensorUnit.setText(unit.length() == 0 ? "" : " (" + unit + ")");
        } else {
            final TextView sensorNameV = (TextView) row.getTag(R.id.sensorName);
            final TextView sensorValV = (TextView) row.getTag(R.id.values);
            //
            final ISensorData data = sensorEntry.getSensorData();
            final String sensorName = data.getSensor().getName();
            sensorNameV.setText(sensorName);
            final float[] values = data.getValues();
            final String[] fStringValues = new String[values.length];
            for (int j = 0; j < values.length; ++j) {
                fStringValues[j] = fFormatter.doConvert(values[j]);
            }
            sensorValV.setText(Arrays.toString(fStringValues));
        }
        return row;
    }

    @Override
    public void onSharedPreferenceChanged(SharedPreferences sharedPreferences,
                                          String key) {
        if (key.equals(PROP_PRECISION)) {
            final int precision = Integer.parseInt(fPrefs.getString(PROP_PRECISION,
                    DEF_PRECISION_STR));
            fFormatter = new FloatFormatter(precision);
        }
    }

    @Override
    public int getItemViewType(int position) {
        return getItem(position).isSection() ? ITEM_TYPE_SECTION : ITEM_TYPE_SENSOR;
    }

    @Override
    public int getViewTypeCount() {
        return ITEM_TYPE_COUNT;
    }

    @Override
    public boolean isEnabled(int position) {
        return !getItem(position).isSection();
    }
}
Java Source Code List
