Android Open Source - EulerSolutions Problem Presentation Activity

• Back to App/algorithm  ↑

From Project

Back to project page EulerSolutions.

License

The source code is released under:

MIT License

Java Source Code

package com.eulersolutions.controllers;
/*from w  ww  .  ja v  a  2 s .co m*/
import java.util.ArrayList;

import com.eulersolutions.model.ProblemCalculator;
import com.eulersolutions.model.ProblemSummary;

import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;

public class ProblemPresentationActivity extends Activity {
  
  private static final String TAG = "EulerSolutions-ProblemPresentationActivity";
  
  private ProblemSummary problem;
  private int[] textViewInputIds;
  private int[] editTextInputIds;
  
  public static final String PARCEL_NAME = "problem";
  public static final int MAX_INPUTS = 3;
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    Log.i(TAG, "Entered onCreate");
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_problem_presentation);
    Intent intent = this.getIntent();
    problem = intent.getParcelableExtra(PARCEL_NAME);
    
    //setup the id arrays
    setupGuiIds();
    
    //set up the view text
    setupInputs(problem);
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.problem_presentation, menu);
    return true;
  }
  
  public void startCalculation (View view)
  {
    Log.i(TAG, "Entered Start Calculation");
    boolean validGUI = true;
    String toAdd = "";
    EditText textReader;
    TextView textSolution = (TextView) this.findViewById(R.id.problemSolutionTextView);
    Number answer = Integer.valueOf(0);
    ArrayList<String> values = new ArrayList<String>();
    ProblemCalculator calculator = problem.getCalculator();
    
    for(int index = 0; index < problem.getNumberOfInputs(); index++)
    {
      textReader = (EditText) this.findViewById(editTextInputIds[index]);
      toAdd = textReader.getText().toString();
      if(toAdd.isEmpty())
      {
        validGUI = false;
        index = problem.getNumberOfInputs();
        textReader.setError("Please enter a positive number");
      }
      values.add(toAdd);
    }
    
    if(validGUI)
    {
      answer = calculator.findAnswer(values);
      if(answer == null)
      {
        textSolution.setText("Invalid");
      }
      else
      {
        textSolution.setText(answer.toString());
      }
    }
    else
    {
      textSolution.setText("Invalid");
    }
  }
  
  public void showSolution(View view)
  {
    Log.i(TAG, "Entered Show Solution");
    Intent solutionIntent = new Intent(this, ProblemSolutionActivity.class);
    
    solutionIntent.putExtra(ProblemSolutionActivity.MY_SOLUTION_NAME, problem.getSolution());
    solutionIntent.putExtra(ProblemSolutionActivity.EULER_SOLUTION_NAME, problem.getEulerSolution());
    
    this.startActivity(solutionIntent);
  }
  
  private void setupGuiIds()
  {
    Log.i(TAG, "Entered Gui ID Setup");
    textViewInputIds = new int[MAX_INPUTS];
    editTextInputIds = new int[MAX_INPUTS];
    
    textViewInputIds[0] = R.id.problemInputOneDescription;
    textViewInputIds[1] = R.id.problemInputTwoDescription;
    textViewInputIds[2] = R.id.problemInputThreeDescription;
    
    editTextInputIds[0] = R.id.problemInputOneEditText;
    editTextInputIds[1] = R.id.problemInputTwoEditText;
    editTextInputIds[2] = R.id.problemInputThreeEditText;
  }
  
  private void setupInputs(ProblemSummary newProblem)
  {
    Log.i(TAG, "Entered Input Setup");
    TextView toModifyText;
    EditText toModifyInput;
    ArrayList<String> inputStrings = newProblem.getInputStrings();
    
    this.setTitle(newProblem.getName());
    
    toModifyText = (TextView) this.findViewById(R.id.problemDescriptionTextView);
    toModifyText.setText(newProblem.getDescription());
    
    toModifyText = (TextView) this.findViewById(R.id.problemExampleTextView);
    toModifyText.setText(newProblem.getExample());
    
    for(int index = 0; index < MAX_INPUTS; index++)
    {
      toModifyText = (TextView) this.findViewById(textViewInputIds[index]);
      toModifyInput = (EditText) this.findViewById(editTextInputIds[index]);
      
      if(index < newProblem.getNumberOfInputs())
      {
        toModifyText.setText(inputStrings.get(index));
      }
      else
      {
        toModifyText.setVisibility(View.GONE);
        toModifyInput.setVisibility(View.GONE);
      }
    }
  }
}

Java Source Code List

• Back to App/algorithm  ↑