如何在一个屏幕中使用SpriteBatch和ShapeRenderer？

Question

我用SpriteBatch绘制纹理，用ShapeRenderer绘制形状。

这是我在演员中的代码

@Override
public void draw(Batch batch, float parentAlpha) {
    batch.end();
    Gdx.gl.glEnable(GL20.GL_ARRAY_BUFFER_BINDING);
    Gdx.gl.glEnable(GL20.GL_BLEND);
    Gdx.gl.glBlendFunc(GL20.GL_SRC_ALPHA, GL20.GL_ONE_MINUS_SRC_ALPHA);
    shapeRenderer.begin(ShapeType.Filled);

    //change color

    shapeRenderer.setColor(color);

    shapeRenderer.rect(rectangle.x, rectangle.y, rectangle.width, rectangle.height);

    shapeRenderer.end();
    Gdx.gl.glDisable(GL20.GL_BLEND);
    batch.begin();
}

并在屏幕上调用stage.draw（）

@Override
public void render(float delta) {
    Gdx.gl20.glClearColor(0, 0, 0, 0);
    Gdx.gl20.glClear(GL20.GL_COLOR_BUFFER_BIT | GL20.GL_DEPTH_BUFFER_BIT);
    Gdx.gl20.glEnable(GL20.GL_TEXTURE_2D);
    stage.act(delta);
    stage.draw();
    //......
}

它正在工作，但不可预测地抛出异常：

STACK_TRACE=java.lang.IllegalStateException: SpriteBatch.end must be called before begin.
at com.badlogic.gdx.graphics.g2d.SpriteBatch.begin(SpriteBatch.java:164)
at com.badlogic.gdx.scenes.scene2d.Stage.draw(Stage.java:127)
at c.i.a.a(AbstractCardRoomRenderer.java:3078)
at c.i.s.a(TLMNCardRoomRenderer.java:1158)
at c.j.e.render(GameScreen.java:22)
at com.badlogic.gdx.Game.render(Game.java:46)
at com.badlogic.gdx.backends.android.AndroidGraphics.onDrawFrame(AndroidGraphics.java:422)
at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1522)
at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1239)

batch.end();
//drawing shapes

         batch.begin() (somewhere else) <--- I think this code is call when stage call draw on other actor

 //drawing completed
 batch.begin() 

Answer 1

@Override
public void draw(Batch batch, float parentAlpha) {
    batch.end();   <-- 
    Gdx.gl.glEnable(GL20.GL_ARRAY_BUFFER_BINDING);
    ../// other code


    shapeRenderer.end();
    Gdx.gl.glDisable(GL20.GL_BLEND);
    batch.begin(); <--

我认为错误在于您正在调用batch.end()之前bacth.begin()；尝试更改顺序

另一方面，如果绘制方法。它是stage类，使用所需的参数调用它，public void draw（Batch Batch，float parentAlpha)