extends View to create game board : Game « Game « Android

1. Android
2. Game
3. Game

extends View to create game board

 


package app.test;

import android.app.Activity;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.os.Bundle;
import android.view.View;

class GameBoard extends View {
  private int nSquares, colorA, colorB;

  private Paint paint;
  private int squareDim;

  public GameBoard(Context context, int nSquares, int colorA, int colorB) {
    super(context);
    this.nSquares = nSquares;
    this.colorA = colorA;
    this.colorB = colorB;
    paint = new Paint();
  }

  @Override
  protected void onDraw(Canvas canvas) {
    for (int row = 0; row < nSquares; row++) {
      paint.setColor(((row & 1) == 0) ? colorA : colorB);
      for (int col = 0; col < nSquares; col++) {
        int a = col * squareDim;
        int b = row * squareDim;
        canvas.drawRect(a, b, a + squareDim, b + squareDim, paint);
        paint.setColor((paint.getColor() == colorA) ? colorB : colorA);
      }
    }
  }
  @Override
  protected void onMeasure(int widthMeasuredSpec, int heightMeasuredSpec) {
    int width = MeasureSpec.getSize(widthMeasuredSpec);
    int height = MeasureSpec.getSize(heightMeasuredSpec);
    int d = (width == 0) ? height : (height == 0) ? width
        : (width < height) ? width : height;
    setMeasuredDimension(d, d);
    squareDim = width / nSquares;
  }
}

public class Test extends Activity {
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    GameBoard gb = new GameBoard(this, 8, Color.BLUE, Color.WHITE);
    setContentView(gb);
  }
}

   
  

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