Hi again,
I am getting to grip with the android fundamentals and am curious as
to how the onTouch and the onTouchlisteners work.
To keep it simple I have used onDraw to draw two circles on a canvas,
a green circle and a red circle (each of type ShapeDrawable - Oval
Shape). I now wish to make it so that when I push the green circle, it
will move to the right and if I push the red circle it will move down.
I can move the circles with a timer delay so I am aware of how to do
this but I can't capture the onTouch. Can someone please help?
I have drawn my two circles with the below code (very similar to one
of the exercises):
------------------------------------------------
package com.image;
import android.app.Activity;
import android.os.Bundle;
public class image extends Activity {
/** Called when the activity is first created. */
private CustomDrawableView mCustomDrawableView;
//private CustomDrawableView mCustomDrawableView2;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//last argument 1 = green, all others = red
mCustomDrawableView = new CustomDrawableView(this, 20,20,20,20);
setContentView(mCustomDrawableView);
}
}
package com.image;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.ShapeDrawable;
import android.graphics.drawable.shapes.OvalShape;
import android.view.View;
public class CustomDrawableView extends View {
private ShapeDrawable[] mDrawables;
public CustomDrawableView(Context context, int x, int y, int
width, int height) {
super(context);
mDrawables = new ShapeDrawable[2];
mDrawables[0] = new ShapeDrawable(new OvalShape()); // green
one
mDrawables[1] = new ShapeDrawable(new OvalShape()); //red one
mDrawables[0].getPaint().setColor(0xff74AC23);
mDrawables[1].getPaint().setColor(0xffff0000);
mDrawables[0].setBounds(x,y,x+width,y+height); //arguments
left, top, right, bottom
mDrawables[1].setBounds(x+30,y+30,x+width+30,y+height+30);
}
@Override protected void onDraw(Canvas canvas) {
//mDrawables[0].draw(canvas);
for (Drawable dr : mDrawables) {
dr.draw(canvas);
}
}
}
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