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public class drawing extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(new MyView(this));
}
class MyView extends View {
ArrayList<Vertex> list = new ArrayList<Vertex>();
public Paint p = new Paint();
// ---------------------------------------
// 생성자
// ---------------------------------------
public MyView(Context context) { // this를 context로 받아
super(context);
p.setColor(Color.BLACK);
p.setAntiAlias(true);
p.setStrokeWidth(5);
}
// ---------------------------------------
// 생성자
// ---------------------------------------
public class Vertex {
public Vertex(float x, float y, boolean stat) {
this.x = x;
this.y = y;
this.stat = stat;
}
float x;
float y;
boolean stat;
}
// -----------------------------------
// 이미지파일로 비트맵을 만들고 Canvas에 그림을 그리는 onDraw()
// -------------------------------------
@Override
public void onDraw(Canvas canvas) {
System.out.println("onDraw");
// 캔버스 배경을 흰색으로 변경
canvas.drawColor(Color.WHITE);
for (int i = 0; i < list.size(); i++) {
Vertex v = list.get(i);
// 선을 그린다.
if (v.stat == true) {
canvas.drawLine(list.get(i - 1).x, list.get(i - 1).y, list
.get(i).x, list.get(i).y, p);
}
}
}
@Override
public boolean onTouchEvent(MotionEvent event) {
System.out.println("onTouchEvent");
if (event.getAction() == MotionEvent.ACTION_DOWN) {
System.out.println("ACTION_DOWN");
list.add(new Vertex(event.getX(), event.getY(), false));
}
else if (event.getAction() == MotionEvent.ACTION_MOVE) {
list.add(new Vertex(event.getX(), event.getY(), true));
System.out.println("ACTION_MOVE");
invalidate();
}
return true;
}
}
}
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