I'm trying to move two views (more later on) around the screen by
touching and dragging them. Unfortunately only one of them moves when
I touch the screen. Have any ideas?
The Ball class is the class representing the View I want to move.
package test.com;
import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.widget.FrameLayout;
public class test extends Activity {
public int index = 0;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
FrameLayout main = (FrameLayout) findViewById(R.id.main_view);
Ball ball1 = new Ball(this,50,50,25, 0xFFFF0000);
ball1.setId(1);
main.addView(ball1);
Ball ball2 = new Ball(this,75,75,25, Color.BLUE);
ball2.setId(2);
main.addView(ball2);
}
}
package test.com;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.view.MotionEvent;
import android.view.View;
import android.widget.FrameLayout;
public class Ball extends View {
private float x;
private float y;
private int r;
private Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
public Ball(Context context, float x, float y, int r, int color) {
super(context);
mPaint.setColor(color);
this.x = x;
this.y = y;
this.r = r;
this.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent e)
{
float x = e.getX();
float y = e.getY();
int eventaction =
e.getAction
();
Ball aa = (Ball)v;
switch (eventaction)
{
case
MotionEvent.ACTION_MOVE:
aa.setLocation(x, y);
break;
}
return true;
}
});
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
canvas.drawCircle(x, y, r, mPaint);
}
public void setLocation(float newX, float newY)
{
this.x = newX;
this.y = newY;
this.invalidate();
}
}
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