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我对Android感兴趣，我对它很感兴趣，所以我创建了一个滚动背景，并且我想将一个精灵放在它上面我已经创建了一个字符类和滚动背景。我想让精灵向右移动，但是我的GamePanel出现错误。试图在滚动背景上创建移动精灵
错误是非静态方法（android.graphics.Canvas）不能从静态上下文中引用，它是什么意思，我该如何解决这个问题，我让精灵看起来像跑向右边？
这里是我的代码：
public class GamePanel extends SurfaceView implements SurfaceHolder.Callback {
public static final int WIDTH = 856;
public static final int HEIGHT = 480;
public static int Score =0;
public static int Highscore;
private MainThread thread;
private Background bg;
private Bitmap bmp;
public GamePanel(Context context) {
super(context);
getHolder().addCallback(this);
thread = new MainThread(getHolder(), this);
setFocusable(true);
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
boolean retry = true;
while(retry) {
try {
thread.setRunning(false);
thread.join();
}catch(InterruptedException e) {
e.printStackTrace();
retry = false;
}
}
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
bg = new Background(BitmapFactory.decodeResource(getResources(), R.drawable.gamebg));
bmp = BitmapFactory.decodeResource(getResources(), R.drawable.deer);
bg.setVector(-5);
thread.setRunning(true);
thread.start();
}
@Override
public boolean onTouchEvent(MotionEvent event) {
return super.onTouchEvent(event);
}
public void update() {
Score += 2;
if (Score > Highscore) {
Highscore = Score;
}
bg.update();
}
@SuppressLint("MissingSuperCall")
@Override
public void draw(Canvas canvas) {
final float scaleFactorX = (float)getWidth()/WIDTH;
final float scaleFactorY = (float)getHeight()/HEIGHT;
if(canvas !=null) {
final int savedState = canvas.save();
canvas.scale(scaleFactorX, scaleFactorY);
bg.draw(canvas);
canvas.restoreToCount(savedState);
Paint textpaint = new Paint();
textpaint.setTextSize(30);
canvas.drawText("Score:" +String.valueOf(Score), 0, 32, textpaint);
canvas.drawText("High Score: "+String.valueOf(Highscore), 0, 64, textpaint);
}
}
@Override
protected void onDraw(Canvas canvas) {
Character.onDraw(canvas);
}
}