Android Open Source - Bucky Set Detail

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License

The source code is released under:

GNU General Public License

Java Source Code

package net.tedstein.Bucky;
//ww  w.ja v a  2  s .c  om
import java.util.Date;

import net.tedstein.Bucky.util.DatapointAdder;
import net.tedstein.Bucky.util.DatapointCursorAdapter;

import org.apache.commons.math.stat.descriptive.SummaryStatistics;

import android.app.Activity;
import android.content.ContentResolver;
import android.content.Intent;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView.AdapterContextMenuInfo;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.TextView;

public class SetDetail extends Activity {
    private static final String TAG = "Bucky";

    private int setID;
    private Cursor mPointsCursor;
    private SummaryStatistics mSummaryStatistics;



    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.setdetail, menu);
        return true;
    }

    
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
        case R.id.setdetail_add_datapoint:
            DatapointAdder.createAddPointDialog(this, this.setID);
            return true;
        default:
            return super.onOptionsItemSelected(item);
        }
    }


    @Override
    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
        super.onCreateContextMenu(menu, v, menuInfo);

        // Retrieve the TextView of the selected item so we can set a useful title.
        LinearLayout item_view = (LinearLayout)((AdapterContextMenuInfo)menuInfo).targetView;
        TextView data_view = (TextView)item_view.getChildAt(0);
        CharSequence data = data_view.getText();
        menu.setHeaderTitle(data);

        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.setdetail_item_context, menu);
    }


    @Override
    public boolean onContextItemSelected(MenuItem item) {
        AdapterContextMenuInfo info = (AdapterContextMenuInfo)item.getMenuInfo();
        int point_id = (Integer)info.targetView.getTag();
        ContentResolver cr = getContentResolver();

        switch (item.getItemId()) {
        case R.id.setdetail_item_context_edit:
            // TODO
            return true;
        case R.id.setdetail_item_context_delete:
            Uri datapoint_uri = Uri.withAppendedPath(
                    BuckyProvider.DATAPOINTS_URI,
                    String.valueOf(point_id));
            cr.delete(datapoint_uri, null, null);
            return true;
        default:
            return super.onContextItemSelected(item);
        }
    }



    private void updateStats() {
        // Do a single pass over the data to collect stats.
        mSummaryStatistics.clear();
        int value_index = mPointsCursor.getColumnIndex(BuckyProvider.DP_VALUE);
        mPointsCursor.moveToFirst();
        while (mPointsCursor.isAfterLast() == false) {
            double value = Double.parseDouble(mPointsCursor.getString(value_index));
            mSummaryStatistics.addValue(value);
            mPointsCursor.moveToNext();
        }

        // Fill in stats values from the SummaryStatistics.
        TextView mean = (TextView)findViewById(R.id.SetDetailMeanValue);
        TextView min = (TextView)findViewById(R.id.SetDetailMinValue);
        TextView max = (TextView)findViewById(R.id.SetDetailMaxValue);
        mean.setText(String.format("%.2f", mSummaryStatistics.getMean()));
        min.setText(String.valueOf(mSummaryStatistics.getMin()));
        max.setText(String.valueOf(mSummaryStatistics.getMax()));
    }


    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.setdetail);

        Intent i = getIntent();
        this.setID = i.getIntExtra(BuckyProvider.DS_ID, BuckyProvider.NO_DATASET);
        assert this.setID != BuckyProvider.NO_DATASET : "SetDetail was started without a dataset!";

        // Create Activity-persistent objects.
        this.mPointsCursor = managedQuery(BuckyProvider.DATAPOINTS_URI,
                new String[] {
                BuckyProvider.DP_ID,
                BuckyProvider.DP_WHENCREATED,
                BuckyProvider.DP_VALUE },
            BuckyProvider.DP_SETID + "=?",
            new String[] {
                String.valueOf(setID) },
            BuckyProvider.DP_WHENCREATED + " DESC");
        this.mSummaryStatistics = new SummaryStatistics();

        // Retrieve general info from the datasets table.
        Cursor sets = managedQuery(
                Uri.withAppendedPath(BuckyProvider.DATASETS_URI, String.valueOf(this.setID)),
                new String[] {
                    BuckyProvider.DS_NAME,
                    BuckyProvider.DS_WHENCREATED },
                null,
                null,
                null);
        int name_index = sets.getColumnIndex(BuckyProvider.DS_NAME);
        int whencreated_index = sets.getColumnIndex(BuckyProvider.DS_WHENCREATED);
        sets.moveToFirst();
        String name = sets.getString(name_index);
        long whencreated = sets.getLong(whencreated_index);
        sets.close();

        // Display all our summary info about this dataset.
        TextView name_view = (TextView)findViewById(R.id.SetDetailName);
        TextView date_view = (TextView)findViewById(R.id.SetDetailDate);
        name_view.setText(name);
        date_view.setText(new Date(whencreated).toString());
        updateStats();

        // Set up the ListView with the individual datapoints.
        ListView points_list = (ListView)findViewById(R.id.SetDetailData);
        DatapointCursorAdapter points_adapter = new DatapointCursorAdapter(this,
                this.mPointsCursor,
                R.layout.setdetail_item);
        points_list.setAdapter(points_adapter);
        registerForContextMenu(points_list);
    }


    protected void onResume() {
        super.onResume();
        LinearLayout header = (LinearLayout)findViewById(R.id.SetDetailHeader);

        switch (Resources.getSystem().getConfiguration().orientation) {
        case Configuration.ORIENTATION_UNDEFINED:
        case Configuration.ORIENTATION_PORTRAIT:
        case Configuration.ORIENTATION_SQUARE:
            header.setOrientation(LinearLayout.VERTICAL);
            Log.d(TAG, "SetDetail: drawing header in portrait.");
            break;
        case Configuration.ORIENTATION_LANDSCAPE:
            header.setOrientation(LinearLayout.HORIZONTAL);
            Log.d(TAG, "SetDetail: drawing header in landscape.");
            break;
        }
    }
}

Java Source Code List

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