飛機小遊戲——一階段

飛機大戰的第一個頁面GameSurface類

GamesurfaceView類方法

package com.example.chenning.myapplication;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.view.SurfaceHolder;
import android.view.SurfaceView;

/**
 * Created by ChenNing on 2017/5/24.
 */

public  class GameSurfaceView extends SurfaceView implements SurfaceHolder.Callback{



    //畫布
    private Canvas canvas;
    //畫筆
    private Paint paint;

    private SurfaceHolder surfaceHolder;

    public static int screenWeight;
    public static int screenheight;




    private GameMenu gamemenu;
    private Bitmap bmpMenuBG;//菜單頁面背景圖片
    private Bitmap bmplogo;//菜單頁面logo
    private Bitmap bmgButton;//菜單頁面Buffon
    private Bitmap bmgText;//菜單頁面文本


    public GameSurfaceView(Context context) {
        super(context);

        surfaceHolder=this.getHolder();
        surfaceHolder.addCallback(this);
        paint = new Paint();
        paint.setAntiAlias(true);//取消鋸齒






    }



    @Override
    public void surfaceCreated(SurfaceHolder holder) {

        screenWeight=this.getWidth();
        screenheight=this.getHeight();

        initBitmap();
        //創建一個新的線程
        new Thread(new Runnable() {
            @Override
            public void run() {

                myDraw();


            }
        }).start();
    }

    @Override
    public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {

    }

    @Override
    public void surfaceDestroyed(SurfaceHolder holder) {

    }

    /**
     * 初始化圖片
     */
    private void initBitmap() {
        //把圖片轉換成Bitmap類型
        bmpMenuBG= BitmapFactory.decodeResource(this.getResources(),R.drawable.mainmenu);
        bmplogo= BitmapFactory.decodeResource(this.getResources(),R.drawable.logo);
        bmgButton= BitmapFactory.decodeResource(this.getResources(),R.drawable.menustart);
        bmgText= BitmapFactory.decodeResource(this.getResources(),R.drawable.starttext);

        //初始化對象
        gamemenu=new GameMenu(bmpMenuBG,bmplogo,bmgButton,bmgText);
    }

    /**
     * 繪圖方法
     */
    private void myDraw() {
        //初始化canvas
        canvas=surfaceHolder.lockCanvas();
        //調用gameMenu對象遊戲菜單頁面
        gamemenu.draw(canvas,paint);

        if(canvas!=null){
            surfaceHolder.unlockCanvasAndPost(canvas);
        }

    }
}

GameMenu類

package com.example.chenning.myapplication;

import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Rect;

/**
 * Created by ChenNing on 2017/5/24.
 */

public class GameMenu {
    private Bitmap bmpMenuBG;//菜單頁面背景圖片
    private Bitmap bmplogo;//菜單頁面logo
    private Bitmap bmgButton;//菜單頁面Buffon
    private Bitmap bmgText;//菜單頁面文本
    private Rect rect;

    public GameMenu(Bitmap bmpMenuBG,Bitmap bmplogo,Bitmap bmgButton,Bitmap bmgText){
        this.bmpMenuBG=bmpMenuBG;
        this.bmplogo=bmplogo;
        this.bmgButton=bmgButton;
        this.bmgText=bmgText;



    }



    /**
     * 畫菜單頁面
     * @param canvas
     * @param paint
     */
     public void draw(Canvas canvas, Paint paint){
         //畫背景圖
         canvas.drawBitmap(bmpMenuBG,0,0,paint);

         Rect rect=new Rect(0,GameSurfaceView.screenheight/3-100,
                 GameSurfaceView.screenWeight,
                 GameSurfaceView.screenheight/3+GameSurfaceView.screenheight/5-100);
         canvas.drawBitmap(bmplogo,null,rect,paint);

         int x=canvas.getWidth()/2-bmgButton.getWidth()/2;
         int y=canvas.getHeight()/3*2;
         canvas.drawBitmap(bmgButton,x,y,paint);

         int z=canvas.getWidth()/2-bmgText.getWidth()/2;
         int q=canvas.getHeight()/3*2+20;
         canvas.drawBitmap(bmgText,z,q,paint);
     }


}

mainActivity類

package com.example.chenning.myapplication;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

public class    MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);




//        setContentView(R.layout.activity_main);
        //設置內容視圖
        setContentView(new GameSurfaceView(this));



    }
}