how to save the activity in android while painting

Question

i made an application which is generally used to draw lines n figures.Suppose i made a square.now i want to save it and when i start my application again so i must see the square.how could it possible. here is my code

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    // Set full screen view
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, 
                                     WindowManager.LayoutParams.FLAG_FULLSCREEN);
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    DrawView drawView = new DrawView(this, null);
    setContentView(drawView);
    drawView.requestFocus();

}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // TODO Auto-generated method stub
    menu.add(0,1,1,"RED").setShortcut('3', 'C');
    menu.add(0,2,2,"GREEN");
    menu.add(0,3,3,"BLUE");
    menu.add(0,4,4,"Erase");
    return super.onCreateOptionsMenu(menu);
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // TODO Auto-generated method stub
    switch(item.getItemId())
    {
    case 1:
        first(x,y,z);
        break;

    case 4:
        DrawView.second();
        break;
    }
    return super.onOptionsItemSelected(item);
}

public List<Integer> first(int x2, int y2, int z2) {
    // TODO Auto-generated method stub

    x2=100;y2=150;z2=200;
    al.add(x2);al.add(y2);al.add(z2);
    return al;

}

}

  public DrawView(Context context, AttributeSet attrs) {
    super(context, attrs);
    list1 = d.first(a,b,c);   
    paint.setAntiAlias(true);
    paint.setColor(Color.rgb(list1.get(0),list1.get(1),list1.get(2)));
    paint.setStyle(Paint.Style.STROKE);
    paint.setStrokeJoin(Paint.Join.ROUND);
    paint.setStrokeWidth(5f);
  }

  @Override
  protected void onDraw(Canvas canvas) {
    canvas.drawPath(path, paint);
  }

  @Override
  public boolean onTouchEvent(MotionEvent event) {
    float eventX = event.getX();
    float eventY = event.getY();

    switch (event.getAction()) {
      case MotionEvent.ACTION_DOWN:
        path.moveTo(eventX, eventY);
        return true;
      case MotionEvent.ACTION_MOVE:
      case MotionEvent.ACTION_UP:
        path.lineTo(eventX, eventY);
        break;
      default:
        return false;
    }

    // Schedules a repaint.
    invalidate();
    return true;
  }

static void second() {
    // TODO Auto-generated method stub
    erase(paint);
}

private static void erase(Paint paint2) {
    // TODO Auto-generated method stub
    paint2.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));
}

}

score 0 · Answer 1 · edited May 23 '17 at 11:49

0

Save your canvas to a jpg image, then when your Activity starts, check if an Image exists. If yes,load it and draw on it, else draw on an empty canvas.

edited May 23 '17 at 11:49

Community

1
1

answered May 23 '12 at 13:27

Kazekage Gaara

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if i want to store in gallery of my phone then what should i give the value of path. – sachit May 23 '12 at 14:14
http://stackoverflow.com/questions/9076050/how-to-paint-on-an-image-and-save-the-image-to-phone-gallery-in-android – Kazekage Gaara May 23 '12 at 14:32
Please search SO on your own. You will find many things that are helpful to you,before asking anything. – Kazekage Gaara May 23 '12 at 14:32

how to save the activity in android while painting

1 Answers1