Question

我对AndEngine很新。它是一个强大而强大的引擎，然而，有一些令人沮丧的事情，例如无法画圆圈（顺便说一下，有没有办法做到这一点？！）

但我担心的是我有一个棋盘游戏，而我只想展示Toast的消息。我把命令放在scene.attachChild()内public Scene onCreateScene()之后，但是当试图运行游戏时，它就会破坏

public class MainActivity extends SimpleBaseGameActivity {
    private static int CAMERA_WIDTH ;
    private static int CAMERA_HEIGHT;
    //  private int numRows= 8;
    //  private int numColumns= 10;

    private Font mFont;
    private ITexture mFaceTexture;
    private ITextureRegion mFaceTextureRegion;

    private ITexture boardTexture;
    private ITextureRegion boardTextureRegion;

    @Override
    public EngineOptions onCreateEngineOptions() {
        DisplayMetrics metrics = getResources().getDisplayMetrics();
        CAMERA_WIDTH = metrics.widthPixels;
        CAMERA_HEIGHT = metrics.heightPixels;

        final Camera camera = new Camera(0, 0, CAMERA_WIDTH, CAMERA_HEIGHT);
        return new EngineOptions(true, ScreenOrientation.PORTRAIT_SENSOR, new RatioResolutionPolicy(CAMERA_WIDTH, CAMERA_HEIGHT), camera);
    }

    @Override
    public void onCreateResources() throws IOException {
        this.mFont = FontFactory.create(this.getFontManager(), this.getTextureManager(), 256, 256, Typeface.create(Typeface.DEFAULT, Typeface.BOLD), 16);
        this.mFont.load();

        this.boardTexture = new AssetBitmapTexture(this.getTextureManager(), this.getAssets(), "board.png");
        this.boardTextureRegion = TextureRegionFactory.extractFromTexture(this.boardTexture);
        this.boardTexture.load();

        this.mFaceTexture = new AssetBitmapTexture(this.getTextureManager(), this.getAssets(), "GraduationIcon.png");
        this.mFaceTextureRegion = TextureRegionFactory.extractFromTexture(this.mFaceTexture);
        this.mFaceTexture.load();


    }

    @Override
    public Scene onCreateScene() {
        this.mEngine.registerUpdateHandler(new FPSLogger());
        final Scene scene = new Scene();
        scene.getBackground().setColor(Color.BLACK);

        /* Create the rectangles. */
        final Sprite board = new Sprite(CAMERA_WIDTH/2, CAMERA_HEIGHT/2, this.boardTextureRegion, this.getVertexBufferObjectManager());
        board.setScale(.5f);


        /* Create the sprite and add it to the scene. */
        final Sprite face = new Sprite(CAMERA_WIDTH/2, CAMERA_HEIGHT/2, this.mFaceTextureRegion, this.getVertexBufferObjectManager());

        /* draw a line */
        float x1=CAMERA_WIDTH/2;
        float y1=CAMERA_HEIGHT/2;
        float x2=CAMERA_WIDTH *7/8;
        float y2=CAMERA_HEIGHT /2;
        Random random = new Random(123456789);
        float lineWidth=2;

        final Line line = new Line(x1+20, y1, x2, y2, lineWidth, this.getVertexBufferObjectManager());
        line.setColor(random.nextFloat(), random.nextFloat(), random.nextFloat());

        /* draw a text   */
        final Text text = new Text(x2, y2 , this.mFont, "Week when you are graduated\n (you are 50!)", new TextOptions(HorizontalAlign.CENTER), this.getVertexBufferObjectManager());

        /*add graphics to the scene  */
        scene.attachChild(board);
        scene.attachChild(face);
        scene.attachChild(line);
        scene.attachChild(text);
        Toast.makeText(getApplicationContext(), "msg msg", Toast.LENGTH_SHORT).show();
        return scene;

    }

}

它出了什么问题？：

这是logcat错误

07-14 10:14:22.301: E/AndroidRuntime(21709): FATAL EXCEPTION: Thread-3085
07-14 10:14:22.301: E/AndroidRuntime(21709): Process: com.example.hello, PID: 21709
07-14 10:14:22.301: E/AndroidRuntime(21709): java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()
07-14 10:14:22.301: E/AndroidRuntime(21709):    at android.os.Handler.<init>(Handler.java:200)
07-14 10:14:22.301: E/AndroidRuntime(21709):    at android.os.Handler.<init>(Handler.java:114)
07-14 10:14:22.301: E/AndroidRuntime(21709):    at android.widget.Toast$TN.<init>(Toast.java:344)
07-14 10:14:22.301: E/AndroidRuntime(21709):    at android.widget.Toast.<init>(Toast.java:100)
07-14 10:14:22.301: E/AndroidRuntime(21709):    at android.widget.Toast.makeText(Toast.java:258)
07-14 10:14:22.301: E/AndroidRuntime(21709):    at com.example.hello.MainActivity$1.run(MainActivity.java:143)
07-14 10:14:22.301: E/AndroidRuntime(21709):    at java.lang.Thread.run(Thread.java:818)

Answer 1

尝试在UI线程中运行Toast

activity.runOnUiThread(new Runnable(){
    @Override
    public void run(){
        Toast.makeText(activity, "Hello", Toast.LENGTH_LONG).show();
   }
}

Answer 2

他们使用此Toast代替：

toastOnUiThread("Your message!", Toast.LENGTH_LONG);

和AndEngine一起使用Toast？

2 个答案: