Hi!
I have a problem with one of my app. I try to make a paint application
but nothing is draw on the screen (except the first circle which is
draw on the launch).
The log Cat seems to be correct and i get the right x/y coordinates. I
think i do something wrong on the ondraw.
do you see my problem?
Thanks.
this is my code :
public class Main extends Activity {
/** Called when the activity is first created. */
private TableLayout myView;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.i("onCreate", " Start");
setContentView(R.layout.main);
myView= (TableLayout)findViewById(R.id.TableLayout01);
myView.addView(new PaintView(this));
}
}
public class PaintView extends View implements OnTouchListener {
private float _x, _y;
private int _taille;
private Canvas _myCanvas;
private Paint _paint = new Paint(Paint.ANTI_ALIAS_FLAG);
public PaintView(Context context){
super(context);
Log.i("Info", "_paintview Constructor 1");
//this.setFocusableInTouchMode(true);
_x=20;
_y=20;
_taille = 10;
_paint.setColor(Color.RED);
}
public PaintView(Context parent, float x, float y, int i) {
super(parent);
Log.i("Info", "_paintview Constructor");
_x=x; _y=y; _taille = i;
_paint.setColor(Color.RED);
}
@Override
protected void onDraw(Canvas canvas) {
Log.i("Info ","onDraw start");
try{
// make the entire canvas white
canvas.drawColor(Color.WHITE);
canvas.drawCircle(_x, _y, _taille, _paint);
super.onDraw(canvas);
Log.i("Info ","x="+_x+" y="+_y);
_myCanvas=canvas;
}
catch(Exception e)
{
Log.i("ERROR", "onDraw : " + e.getMessage());
}
}
public void translate(float x, float y){
try{
_x=x;
_y=y;
this.draw(_myCanvas);
}
catch (Exception e){
Log.i("ERROR", " "+e.getMessage());
}
}
@Override
public boolean onTouchEvent(MotionEvent evt){
translate(evt.getX(), evt.getY());
return true;
}
@Override
public boolean onTouch(View v, MotionEvent evt) {
translate(evt.getX(), evt.getY());
return false;
}
}
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