java - 当屏幕太大时出现错误

Question

我最近上传了一个 app到谷歌游戏商店。它适用于某些设备，但不适用于像 nexus 7 这样的大型设备。我得到以下堆栈跟踪:

java.lang.IllegalArgumentException: x + width must be <= bitmap.width()
    at android.graphics.Bitmap.createBitmap(Bitmap.java:667)
    at android.graphics.Bitmap.createBitmap(Bitmap.java:634)
    at de.krissini.server.Player.<init>(Player.java:26)
    at de.krissini.server.GamePanel.surfaceCreated(GamePanel.java:64)

这里是引用代码。游戏面板:

@Override
    public void surfaceCreated(SurfaceHolder holder) {
        setWillNotDraw(false);
        score = 0;
        fuel = 50;
        bg = new Background(BitmapFactory.decodeResource(getResources(), R.raw.grassbg1), 1000);
        player = new Player(BitmapFactory.decodeResource(getResources(), R.raw.helicopter), 132, 47, 3);  // line 64
        scoreStartTime = System.nanoTime();
        smoke = new ArrayList<Smokepuff>();
        smokestartTime = System.nanoTime();
        missles = new ArrayList<Missle>();
        missleStartTime = System.nanoTime();
        thread = new MainThread(getHolder(), this);

        // start game loop
        thread.setRunning(true);
        thread.start();
    }

玩家:

public Player(Bitmap res, int w, int h, int numFrames) {
        x = 100;
        y = GamePanel.HEIGHT / 2;
        dy = 0;
        score = 0;
        height = h;
        width = w;
        spritesheet = res;
        Bitmap[] image = new Bitmap[numFrames];
        for(int i = 0; i<image.length; i++){
            image[i] = Bitmap.createBitmap(spritesheet, i*width, 0, width, height); // line 62
        }

        animation.setFrames(image);
        animation.setDelay(10);
        startTime = System.nanoTime();
    }

我该怎么做才能摆脱这个错误？我感谢每一个答案!

Answer 1

Bitmap.createBitmap(spritesheet, i*width, 0, width, height);

对于这个魔数(Magic Number) 132, 47 无效

自 x + width must be <= bitmap.width()