私はtictactoeアンドロイドアプリケーションを作っています。TicTacToeGFX という customview を作成したonTouchEvent後、(考慮した後) touch の座標を作成しようとしましたが、対応する四角形をビットマップの円または十字で塗りつぶします。問題は、onTouchEvent で目的のビットマップでキャンバスを再描画できないことです。だから私の質問は、キャンバスの後にキャンバスを再描画するにはどうすればよいonTouchEventですか?
public class NewGame extends Activity { TicTacToeGFX Game;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
Game = new TicTacToeGFX(this);
setContentView(Game);
}
}
public class TicTacToeGFX extends View {
int x, y;
int rectanglescounter = 0;
public Rect[] rectangles = new Rect[9];
// BitMap
Bitmap cross = BitmapFactory.decodeResource(getResources(),
R.drawable.cross1);
Bitmap circle = BitmapFactory.decodeResource(getResources(),
R.drawable.circle1);
Bitmap empty = BitmapFactory.decodeResource(getResources(),
R.drawable.empty1);
Paint paint = new Paint();
Canvas canvas = new Canvas();
public TicTacToeGFX(Context context) {
super(context);
setFocusable(true);
}
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
// -------------------------------------------calculate
// screen------------------------------------------------------
x = (int) ((getWidth()) / 3);
y = (int) ((getHeight()) / 3);
// //------------------------------------------- calculate rectangle
// positions on
// screen------------------------------------------------------
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
rectangles[rectanglescounter] = new Rect((x * j), (y * i),
((x * j) + x), ((y * i) + y));
if (rectanglescounter < 8)
rectanglescounter++;
else
break;
}
}
// ------------------------------------------- draw the canvas with
// empty Bitmap
// ------------------------------------------------------
int counter = 0;
canvas.drawRGB(0, 0, 0);
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
canvas.drawBitmap(empty, null, rectangles[counter], null);
counter++;
}
}
// ------------------------------------------- draw
// LinesS------------------------------------------------------
paint.setColor(Color.WHITE);
canvas.drawLine(x, 0, x, 3 * y, paint);// 1h
canvas.drawLine(2 * x, 0, 2 * x, 3 * y, paint);// 2h
canvas.drawLine(0, y, 3 * x, y, paint);// 3h
canvas.drawLine(0, 2 * y, 3 * x, 2 * y, paint);// 4h
}
public boolean onTouchEvent(MotionEvent event) {
int eventaction = event.getAction();
x = (int) event.getX();
y = (int) event.getY();
switch (eventaction) {
case MotionEvent.ACTION_DOWN:
Toast.makeText(getContext(), "Hello", 1).show();
canvas.drawRGB(0, 0, 0);
invalidate();
break;
case MotionEvent.ACTION_MOVE: // touch drag with the ball
// move the balls the same as the finger
break;
}
return true;
}
}