Android Open Source - Sudoku-Solver Solve Activity

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From Project

Back to project page Sudoku-Solver.

License

The source code is released under:

Apache License

Java Source Code

package com.awhittle.sudokusolver;
//www.  j  a  va 2 s  . c o m
import android.os.Bundle;
import android.widget.TextView;
import android.widget.Toast;
import android.app.Activity;

public class SolveActivity extends Activity {

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_solve);
  }
  
  @Override
  protected void onResume(){
    super.onResume();
    
    TextView tv = (TextView)findViewById(R.id.textViewSolution);
    
    //Reset row, column and boolean markers
    Grid.setRowCol(0, 0);
    Grid.setGridBool();
    
    if (isValidGrid()){
      //Solve recursively by brute force
      Solve.bruteForce();
    } else {
      //Error, grid is invalid, send a message
      Toast.makeText(this, R.string.errorInvalid, Toast.LENGTH_LONG).show();
    }
    
    //Print the grid
    Grid.printMatrix(tv, Grid.grid);


  }

  private boolean isValidGrid() {
    for(int i = 0; i < 9; i++){
      for(int j = 0; j < 9; j++){
        if(Grid.gridBool[i][j]){
          //Set row and column to current location
          Grid.row = i;
          Grid.col = j;
          if(!Solve.noConflicts(Grid.grid[i][j])){
            //Conflict found, grid inputed is invalid
            return false;
          }
        }
      }
    }
    return true;
  }


}

Java Source Code List

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