Question

我正在按照我在http://www.androidauthority.com/android-game-java-785331/

找到的教程

我只想要一个基本的教程让我开始在Android上制作游戏。这是MainActivity.java

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
            WindowManager.LayoutParams.FLAG_FULLSCREEN);
    this.requestWindowFeature(Window.FEATURE_NO_TITLE);
    setContentView(new GameView(this));
    }
}

以下是Android Studio声称为抽象的类：

public class MainThread extends Thread {

    private SurfaceHolder surfaceHolder;
    private GameView gameView;
    private boolean running;
    public static Canvas canvas;

    public MainThread(SurfaceHolder surfaceHolder, GameView gameView) {

         super();
         this.surfaceHolder = surfaceHolder;
         this.gameView = gameView;

    }

    @Override
    public void run() {

      while (running) {

        canvas = null;

        try {
            canvas = this.surfaceHolder.lockCanvas();
            synchronized(surfaceHolder) {
                this.gameView.update();
                this.gameView.draw(canvas);
            }
        } catch (Exception e) {} finally {

            if (canvas != null) {
                try {
                    surfaceHolder.unlockCanvasAndPost(canvas);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }
      }
    }

    public void setRunning(boolean isRunning) {
         running = isRunning;
    }

}

以下是试图实例化“抽象”类的类：

public class GameView extends SurfaceView implements SurfaceHolder.Callback {

    public MainThread thread;

    public GameView(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 surfaceCreated(SurfaceHolder holder) {
        thread.setRunning(true);
        thread.start();
    }

    @Override
    public void surfaceDestroyed(SurfaceHolder holder) {

        boolean retry = true;
        while (retry) {
           try {
              thread.setRunning(false);
              thread.join();
           } catch (InterruptedException e) {
               e.printStackTrace();
           }
          retry = false;
        }
    }

    public void update() {

    }

}

我复制并粘贴了教程中的所有代码。我唯一能想到的是超级课程？或者如果有一个按钮我在创建使其抽象的类时意外地单击了？我不确定是什么问题，但我不能继续使用错误的教程。如果有人可以看到什么是错的，或者可以推荐另一个Android Studio游戏教程，我将非常感激。

Answer 1

这是命名问题。我遇到了完全相同的问题，只是将其更改为“ GameThread”即可解决问题

Android Studio声称这个类是抽象的，但我没有把它写成抽象的？

1 个答案: