Android Open Source - chemistry-data Main Activity

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Back to project page chemistry-data.

License

The source code is released under:

MIT License

Java Source Code

package org.sparkfiregames.chemdata;
// w  w  w  .  j a va 2s .  co  m
import java.io.IOException;

import org.sparkfiregames.chemdata.data.DataManager;
import org.sparkfiregames.chemdata.data.DataManager.ElementData;

import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.text.Html;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.inputmethod.InputMethodManager;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ScrollView;
import android.widget.TextView;
import android.widget.Toast;

/**
 * Chemistry Data is an Android app that provides basic data for all chemical elements.
 * 
 * @author Allen Guo
 */
public class MainActivity extends Activity {

  public static MainActivity instance;
  
  private DataManager dataManager;
  private EditText input;
  private ScrollView scroll;
  private TextView data;
  private TextView details;
  private Button submit;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    instance = this;
    dataManager = new DataManager();
    ((ChemistryDataApplication) getApplication()).setData(dataManager);
    try {
      dataManager.load(getApplicationContext());
    } catch (IOException e) {
      Toast toast = Toast.makeText(getApplicationContext(), R.string.load_error, Toast.LENGTH_LONG);
      toast.show();
    }
    input = (EditText) findViewById(R.id.input_edittext);
    scroll = (ScrollView) findViewById(R.id.data_scrollview);
    data = (TextView) findViewById(R.id.data_textview);
    details = (TextView) findViewById(R.id.data_details);
    submit = (Button) findViewById(R.id.submit_button);
    submit.setOnClickListener(new OnClickListener() {
      
      @Override
      public void onClick(View arg0) {
        showElementData(input.getText().toString());
      }
      
    });
  }
  
  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    Intent intent;
    switch(item.getItemId()) {
      case R.id.about_menuitem:
        intent = new Intent(this, AboutActivity.class);
        startActivityForResult(intent, 1);
        return true;
      case R.id.show_all_menuitem:
        intent = new Intent(this, ListAllActivity.class);
        startActivityForResult(intent, 2);
        return true;
    }
    return super.onOptionsItemSelected(item);
  }

  /**
   * Shows data for the given input string (atomic number, symbol,
   * name, or name part of 4+ characters), if possible.
   */
  public void showElementData(String inputText) {
    ElementData element = dataManager.getData(inputText);
    if (element == null) {
      data.setText(R.string.element_not_found);
      details.setVisibility(View.INVISIBLE);
    } else {
      data.setText(Html.fromHtml(element.toString()));
      details.setVisibility(View.VISIBLE);
      input.setText("");
      closeInputKeyboard();
    }
    scroll.setVisibility(View.VISIBLE);
  }
  
  public void closeInputKeyboard() {
    InputMethodManager imm = (InputMethodManager) getSystemService(INPUT_METHOD_SERVICE);
    imm.hideSoftInputFromWindow(input.getWindowToken(), 0);
  }

}

Java Source Code List

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