Andriod Studio 之飞机大战-构建游戏开始界面

package com.example.fpl.helloworld;

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 FPL on 2017/5/24.
*/

public class GameSurface extends SurfaceView implements Surfa
a8b0
ceHolder.Callback {
private  GameMenu gameMenu;
private Bitmap bmpMainBG;
private Bitmap bmpLogo;
private Bitmap bmpButton;
private Bitmap bmpText;
public  static  int screenwidth;
public  static  int  screenheight;

private SurfaceHolder surfaceHolder;
private Canvas canvas;
private Paint paint;

public GameSurface(Context context) {

super(context);

surfaceHolder = this.getHolder();

surfaceHolder.addCallback(this);

paint=new Paint();

paint.setAntiAlias(true);

}

@Override
public void surfaceCreated(SurfaceHolder holder) {
screenwidth=this.getWidth();
screenheight=this.getHeight();

initBitmap();
new Thread(new Runnable() {
@Override
public void run() {
mydraw();

}
}).start();

}

private void mydraw() {
canvas=surfaceHolder.lockCanvas();

gameMenu.draw(canvas,paint);
if (canvas!=null){
surfaceHolder.unlockCanvasAndPost(canvas);

}

}
private  void  initBitmap(){
bmpMainBG= BitmapFactory.decodeResource(this.getResources(),R.drawable.mainmenu);
bmpLogo= BitmapFactory.decodeResource(this.getResources(),R.drawable.logo);
bmpButton= BitmapFactory.decodeResource(this.getResources(),R.drawable.menustartpress);
bmpText= BitmapFactory.decodeResource(this.getResources(),R.drawable.starttext);

gameMenu=new GameMenu(bmpMainBG,bmpLogo,bmpButton,bmpText);

}

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

}

@Override
public void surfaceDestroyed(SurfaceHolder holder) {

}
}

package com.example.fpl.helloworld;

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

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

public class GameMenu {
private Bitmap bmpMainBG;
private Bitmap bmpLogo;
private Bitmap bmpButton;
private Bitmap bmpText;
private Rect rect;
private Rect rect2;

public   GameMenu(Bitmap bmpMainBG,Bitmap bmpLogo,Bitmap bmpButton,Bitmap bmpText ){
this.bmpButton=bmpButton;
this.bmpLogo=bmpLogo;
this.bmpMainBG=bmpMainBG;
this.bmpText=bmpText;
rect=new Rect(0,GameSurface.screenheight/6,GameSurface.screenwidth,GameSurface.screenheight/5+GameSurface.screenheight/5);
rect2=new Rect(0,0,GameSurface.screenwidth,GameSurface.screenheight);

}

public  void draw(Canvas canvas, Paint paint) {

canvas.drawBitmap(bmpMainBG,null,rect2,paint);

canvas.drawBitmap(bmpLogo,null,rect,paint);
int x=GameSurface.screenwidth/2-bmpButton.getWidth()/2;
int y=GameSurface.screenheight/3*2;
canvas.drawBitmap(bmpButton,x,y,paint);
int x1=GameSurface.screenwidth/2-bmpText.getWidth()/2;
int y1=GameSurface.screenheight/3*2+20;
canvas.drawBitmap(bmpText,x1,y1,paint);

}

}