Android Open Source - WineDB Create Or Edit Wine Activity

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License

The source code is released under:

MIT License

Java Source Code

package com.selesse.android.winedb.activity;
//  ww w . j ava  2s .  c o m
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.drawable.ColorDrawable;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.widget.*;
import com.selesse.android.winedb.R;
import com.selesse.android.winedb.database.Wine;
import com.selesse.android.winedb.database.WineDatabaseHandler;
import com.selesse.android.winedb.model.WineColor;

public class CreateOrEditWineActivity extends ActionBarActivity {
    private Wine wine = new Wine();
    private Wine originalWine = new Wine();
    private EditText barcodeText, nameText, countryText, yearText, descText, priceText,
            commentText, imageText;
    private RatingBar ratingBar;
    private Spinner spinner;
    private boolean newWine = false;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        Bundle bundle = this.getIntent().getExtras();

        if (savedInstanceState != null) {
            wine.setId(savedInstanceState.getLong("id"));
        }
        if (bundle != null) {
            wine.setId(bundle.getLong("id"));
            if (wine.getId() <= 0) {
                wine = (Wine) bundle.getSerializable("wine");
                newWine = true;
            } else {
                wine = WineDatabaseHandler.getInstance(this).getWine(wine.getId());
            }
        }
        originalWine = new Wine(wine);

        super.onCreate(savedInstanceState);
        setContentView(R.layout.edit_wine);

        barcodeText = (EditText) findViewById(R.id.barcodeEditText);
        nameText = (EditText) findViewById(R.id.nameEditText);
        countryText = (EditText) findViewById(R.id.countryEditText);
        yearText = (EditText) findViewById(R.id.yearEditText);
        descText = (EditText) findViewById(R.id.descEditText);
        ratingBar = (RatingBar) findViewById(R.id.ratingBar);
        priceText = (EditText) findViewById(R.id.priceEditText);
        commentText = (EditText) findViewById(R.id.commentEditText);
        imageText = (EditText) findViewById(R.id.imageEditText);
        spinner = (Spinner) findViewById(R.id.wineColorSpinner);

        ratingBar.setOnRatingBarChangeListener(new RatingBar.OnRatingBarChangeListener() {
            @Override
            public void onRatingChanged(RatingBar ratingBar, float v, boolean b) {
                int rating = (int) (ratingBar.getRating() * 2);
                if (rating == 0) {
                    wine.setRating(-1);
                }
                else {
                    wine.setRating(rating);
                }
            }
        });

        ArrayAdapter<String> spinnerArrayAdapter = new ArrayAdapter<String>(this,
                android.R.layout.simple_spinner_item, WineColor.getLocalizedStrings(getApplicationContext()
                .getResources()));
        spinnerArrayAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        spinner.setAdapter(spinnerArrayAdapter);

        if (!wine.getBarcode().equals("")) {
            barcodeText.setText(wine.getBarcode());
        }
        if (!wine.getName().equals("")) {
            nameText.setText(wine.getName());
        }
        if (!wine.getCountry().equals("")) {
            countryText.setText(wine.getCountry());
        }
        // TODO input validation (not here)
        if (wine.getYear() > 0 && wine.getYear() < 2500) {
            yearText.setText(String.valueOf(wine.getYear()));
        }
        if (!wine.getDescription().equals("")) {
            descText.setText(wine.getDescription());
        }
        if (wine.getRating() > -1) {
            ratingBar.setRating(wine.getRating() / 2.0f);
        }
        if (!wine.getPrice().equals("")) {
            priceText.setText(wine.getPrice());
        }
        if (!wine.getComment().equals("")) {
            commentText.setText(wine.getComment());
        }
        if (!wine.getImageUrl().equals("")) {
            imageText.setText(wine.getImageUrl());
        }
        if (wine.getColor() != WineColor.UNKNOWN) {
            spinner.setSelection(wine.getColor().ordinal());
        }

        // remove the icon from the ActionBar
        getSupportActionBar().setIcon(new ColorDrawable(android.R.color.transparent));
    }

    @Override
    protected void onResume() {
        super.onResume();

        getSupportActionBar().setIcon(new ColorDrawable(android.R.color.transparent));
    }

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

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_BACK) {
            if (isNewAndPopulatedWine(wine) || wineHasBeenModified()) {
                new AlertDialog.Builder(this).setIcon(android.R.drawable.ic_dialog_alert)
                        .setMessage(R.string.save_before_exit)
                        .setPositiveButton(R.string.yes, new DialogInterface.OnClickListener() {
                            @Override
                            public void onClick(DialogInterface dialog, int which) {
                                validateAndSave();
                            }
                        }).setNegativeButton(R.string.no, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        finish();
                    }
                }).show();
            }
        }
        return super.onKeyDown(keyCode, event);
    }

    private boolean isNewAndPopulatedWine(Wine wine) {
        return newWine && !isEmptyWine(wine);
    }

    private boolean isEmptyWine(Wine wine) {
        Wine emptyWine = new Wine();
        return wine.equals(emptyWine);
    }

    private boolean wineHasBeenModified() {
        saveFields(wine);
        return !wine.equals(originalWine);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case R.id.save_wine_button:
                validateAndSave();
                return true;
            default:
                return super.onOptionsItemSelected(item);
        }
    }

    private void validateAndSave() {
        // make sure that if you're pressing save, you save a name
        if (nameText.getText().toString().trim().length() == 0) {
            Toast.makeText(getApplicationContext(), R.string.empty_name, Toast.LENGTH_SHORT).show();
            nameText.setFocusableInTouchMode(true);
            nameText.requestFocus();

            // scroll back up to highlight the field in question
            ScrollView scrollView = (ScrollView) findViewById(R.id.edit_wine_scrollview);
            scrollView.scrollTo(0, 0);
            return;
        }

        saveFields(wine);

        WineDatabaseHandler.getInstance(getApplicationContext()).putWine(wine);
        Intent data = new Intent();
        data.putExtra("id", wine.getId());
        setResult(RESULT_OK, data);
        finish();
    }

    private void saveFields(Wine wine) {
        wine.setBarcode(barcodeText.getText().toString());
        wine.setName(nameText.getText().toString());
        wine.setCountry(countryText.getText().toString());
        if (yearText.getText().toString().trim().length() > 0) {
            wine.setYear(Integer.parseInt(yearText.getText().toString()));
        } else {
            wine.setYear(-1);
        }
        wine.setDescription(descText.getText().toString());
        if (wine.getRating() > 0) {
            wine.setRating( (int) (ratingBar.getRating() * 2));
        } else {
            wine.setRating(-1);
        }
        wine.setPrice(priceText.getText().toString());
        wine.setComment(commentText.getText().toString());
        wine.setImageURL(imageText.getText().toString());

        if (spinner.getSelectedItemPosition() > 0) {
            wine.setColor(WineColor.values()[spinner.getSelectedItemPosition()]);
        }
    }

    public Wine saveAndGetWine() {
        saveFields(wine);
        return wine;
    }

    @Override
    protected void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);

        outState.putLong("id", wine.getId());
    }
}

Java Source Code List

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