Android 游戏开发 View框架

通过实例化Handler对象并重写handkeMessage方法实现了一个消息接收器。然后再线程中通过sendMessage方法发送更新界面的消息，接收器收到更新界面的消息时便执行invalidate方法更新屏幕显示。

package com.yarin.Android.TestOnView;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.view.View;

public class GameView extends View
{
    int  miCount = 0;
    int  y = 0;
    public GameView(Context context)
    {
        super(context);
    }
    
    public void onDraw(Canvas canvas)
    {
        if (miCount < 100)
        {
            miCount++;
        }
        else
        {
            miCount = 0;
        }
        //绘图
        Paint mPaint = new Paint(); 
        switch (miCount%4)
        {
        case 0:
            mPaint.setColor(Color.BLUE);    
            break;
        case 1:
            mPaint.setColor(Color.GREEN);    
            break;
        case 2:
            mPaint.setColor(Color.RED);    
            break;
        case 3:
            mPaint.setColor(Color.YELLOW);    
            break;
        default:
            mPaint.setColor(Color.WHITE);    
            break;
        }
        //绘制矩形
        canvas.drawRect((320-80)/2, y, (320-80)/2+80, y+40, mPaint);
    }
}

上面是用来绘制界面的，我们还需要一个类来控制应用的操作