View游戏框架--android开发

主要通过重写

@Override
    public void draw(Canvas canvas) {  }

然后通过invalidate();或者postInvalidate();重绘画布，不断更新页面

坦克图片材料

部分源码：

MyView

package caicai.animation;

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

public class MyView extends View {
 private Paint paint;
    private int x = 0, y = 0;// 图片坐标
    private Bitmap bitmap;// 图片资源
    public MyView(Context context) {
        super(context);
        paint=new Paint();
        paint.setColor(Color.WHITE);
        bitmap=BitmapFactory.decodeResource(getResources(), R.drawable.tanke);
        setFocusable(true);
        setFocusableInTouchMode(true);
    }

    @Override
    public void draw(Canvas canvas) {    
        canvas.drawBitmap(bitmap, x, y, paint);
        super.draw(canvas);
    }
    
    /**
//     * 重写触屏事件函数
//     */
    @Override
    public boolean onTouchEvent(MotionEvent event) {
        int x1 = (int)event.getX();
        int y1 = (int)event.getY();
        //玩家手指点击屏幕的动作
        if (event.getAction() == MotionEvent.ACTION_DOWN) {
            x = x1;
            y = y1;
            //玩家手指抬起离开屏幕的动作
        } else if (event.getAction() == MotionEvent.ACTION_MOVE) {
            x = x1;
            y = y1;
            //玩家手指在屏幕上移动的动作
        } else if (event.getAction() == MotionEvent.ACTION_UP) {
            x = x1;
            y = y1;
        }
        //重绘画布
        invalidate();//或者用postInvalidate();刷新画布        
        return true;
    }
}

MainActivity

package caicai.animation;

import android.app.Activity;
import android.os.Bundle;
import android.view.Window;
import android.view.WindowManager;

public class MainActivity extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //设置全屏
        this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        //显示自定义的SurfaceView视图
        setContentView(new MyView(this));

    }
}

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