自定义Android 4向虚拟控制按钮封装实现

import game.button.GameButton;
import android.graphics.Canvas;
import android.view.MotionEvent;

public class Player {

        //方向坐标
public static int x,y;
private int speed = 10;
public static boolean top,left,down,right,a;
private GameButton TOP,LEFT,DOWN,RIGHT,A;

public Player() {
x = MainActivity.ScreenWidth/2 - LoadResource.player.get(0).getWidth()/2;
y = MainActivity.ScreenHeight - LoadResource.player.get(0).getHeight();
this.TOP = new GameButton(20+LoadResource.gamebutton.get(0).getWidth(), MainActivity.ScreenHeight-20-LoadResource.gamebutton.get(0).getWidth()*3, LoadResource.gamebutton.get(0));
this.RIGHT = new GameButton(20+LoadResource.gamebutton.get(0).getWidth()*2, MainActivity.ScreenHeight-20-LoadResource.gamebutton.get(0).getWidth()*2, LoadResource.gamebutton.get(1));
this.DOWN = new GameButton(20+LoadResource.gamebutton.get(0).getWidth(), MainActivity.ScreenHeight-20-LoadResource.gamebutton.get(0).getWidth(), LoadResource.gamebutton.get(2));
this.LEFT = new GameButton(20, MainActivity.ScreenHeight-20-LoadResource.gamebutton.get(0).getWidth()*2, LoadResource.gamebutton.get(3));

}
        GameButton函数是（int x, int y, Bitmap bitmap);

public void draw(Canvas canvas) {

this.TOP.Draw(canvas, null);
this.LEFT.Draw(canvas, null);
this.DOWN.Draw(canvas, null);
this.RIGHT.Draw(canvas, null);