package cn.com.karl.view;
import cn.com.karl.reader.R;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.util.AttributeSet;
import android.widget.GridView;
public class MyGridView extends GridView {
private Bitmap background;
public MyGridView(Context context, AttributeSet attrs) {
super(context, attrs);
background = BitmapFactory.decodeResource(getResources(),
R.drawable.bookshelf_layer_center);
}
@Override
protected void dispatchDraw(Canvas canvas) {
int count = getChildCount();
int top = count > 0 ? getChildAt(0).getTop() : 0;
int backgroundWidth = background.getWidth();
int backgroundHeight = background.getHeight()+2;
int width = getWidth();
int height = getHeight();
for (int y = top; y < height; y += backgroundHeight) {
for (int x = 0; x < width; x += backgroundWidth) {
canvas.drawBitmap(background, x, y, null);
}
}
super.dispatchDraw(canvas);
}
}