java - Java:Android开发人员:“未为GameView类型定义方法getHolder()”

我一直在尝试按照这里的教程:

http://www.edu4java.com/en/androidgame/androidgame2.html

但是遇到了障碍。由于某种原因，eclipse无法识别getHolder()并给我以下错误:

未为类型GameView定义方法getHolder()

以及以下解决方案:

更改为getHandler(...);
创建方法getHolder()

该代码与本教程几乎相同，但是无论如何，这就是我所拥有的:

package com.example.killthemall;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.view.SurfaceHolder;
import android.view.SurfaceHolder.Callback;
import android.view.SurfaceView;
import android.view.View;

public class GameView extends View {

private Bitmap bmp;
private SurfaceHolder holder;

public GameView(Context context) {
    super(context);
    holder = getHolder();
    holder.addCallback(new Callback() {

        public void surfaceDestroyed(SurfaceHolder holder) {

        }

        public void surfaceCreated(SurfaceHolder holder) {
               Canvas c = holder.lockCanvas(null);
               onDraw(c);
               holder.unlockCanvasAndPost(c);
        }

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

        }

 });


    bmp = BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher);
}

@Override
protected void onDraw(Canvas canvas) {
    canvas.drawColor(Color.BLACK);
    canvas.drawBitmap(bmp, 10, 10, null);
}

}

最佳答案

getHolder()是SurfaceView的一种方法，您正在扩展View。改成:

public class GameView extends SurfaceView {