java.lang.IndexOutOfBoundsException:索引13无效,大小为13

Question

我得到一些奇怪的错误,崩溃我的Android应用程序.它是一个测验应用程序.因此,当用户正确回答2/3问题时,请单击它崩溃的下一个按钮.并显示索引13错误.但我无法弄清楚在哪里修理/寻找.这是我的代码片段.

public Vector<Sprite> defaultTile;

private void GameResults()
{
    if(result.equals("right"))      
    {           
        GameOver();
        Log.e("Gaa", "Right Here ->");
    }
}

private void GameOver() {
{
    for (int i = 0; i < defaultTile.size(); i++) {
        defaultTile.get(i).setVisible(false);               
    }
    for (int i = 0; i < defaultTile.size(); i++) 
    {
        unregisterTouchArea(defaultTile.get(i));                
    }
    questionText.detachSelf();   
}   

@Override
public boolean onAreaTouched(TouchEvent event, ITouchArea area, float posX,
        float posY) {

    if(event.isActionUp())
    {
        if(area instanceof Sprite)
        {
            Sprite sprite = (Sprite)area;
            int userData = (Integer) sprite.getUserData();
            switch(userData) 
            {
            case BTN_NEXT:                              
                if(gameState.equals("alpha") && tickBg.isVisible())
                {                       
                    countdown.cancel();                         
                    GameResults();  
                }           

                break;
            }
        }
    }
}   

Log cat详细信息是这样的

08-09 13:30:50.246: W/dalvikvm(919): threadid=12: thread exiting with uncaught exception (group=0x409c01f8)
08-09 13:30:50.276: E/AndroidRuntime(919): FATAL EXCEPTION: GLThread
08-09 13:30:50.276: E/AndroidRuntime(919): java.lang.IndexOutOfBoundsException: Invalid index 9, size is 9
08-09 13:30:50.276: E/AndroidRuntime(919):  at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:251)
08-09 13:30:50.276: E/AndroidRuntime(919):  at java.util.ArrayList.get(ArrayList.java:304)
08-09 13:30:50.276: E/AndroidRuntime(919):  at org.anddev.andengine.entity.Entity.onManagedDrawChildren(Entity.java:1008)
08-09 13:30:50.276: E/AndroidRuntime(919):  at org.anddev.andengine.entity.Entity.onDrawChildren(Entity.java:1000)
08-09 13:30:50.276: E/AndroidRuntime(919):  at org.anddev.andengine.entity.Entity.onManagedDraw(Entity.java:993)
08-09 13:30:50.276: E/AndroidRuntime(919):  at org.anddev.andengine.entity.shape.Shape.onManagedDraw(Shape.java:120)
08-09 13:30:50.276: E/AndroidRuntime(919):  at org.anddev.andengine.entity.Entity.onDraw(Entity.java:875)
08-09 13:30:50.276: E/AndroidRuntime(919):  at org.anddev.andengine.entity.Entity.onManagedDrawChildren(Entity.java:1008)
08-09 13:30:50.276: E/AndroidRuntime(919):  at org.anddev.andengine.entity.Entity.onDrawChildren(Entity.java:1000)
08-09 13:30:50.276: E/AndroidRuntime(919):  at org.anddev.andengine.entity.Entity.onManagedDraw(Entity.java:993)
08-09 13:30:50.276: E/AndroidRuntime(919):  at org.anddev.andengine.entity.scene.Scene.onManagedDraw(Scene.java:233)
08-09 13:30:50.276: E/AndroidRuntime(919):  at org.anddev.andengine.entity.Entity.onDraw(Entity.java:875)
08-09 13:30:50.276: E/AndroidRuntime(919):  at org.anddev.andengine.engine.Engine.onDrawScene(Engine.java:517)
08-09 13:30:50.276: E/AndroidRuntime(919):  at org.anddev.andengine.engine.Engine.onDrawFrame(Engine.java:509)
08-09 13:30:50.276: E/AndroidRuntime(919):  at org.anddev.andengine.opengl.view.RenderSurfaceView$Renderer.onDrawFrame(RenderSurfaceView.java:154)
08-09 13:30:50.276: E/AndroidRuntime(919):  at org.anddev.andengine.opengl.view.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:617)
08-09 13:30:50.276: E/AndroidRuntime(919):  at org.anddev.andengine.opengl.view.GLSurfaceView$GLThread.run(GLSurfaceView.java:549)

UPDATE

这是我的完整类文件http://jquery404.com/file/GameScene.txt

Answer 1

在编程索引中,通常从0开始,因此如果您有9个项目,则最高索引将为8.

您正在使用的库中的某些代码会抛出实际错误

org.anddev.andengine.entity.Entity.onManagedDrawChildren(Entity.java:1008)

您可能正在单独的线程中更改列表,而库也在与列表进行交互.

来自gcode项目 ;

    public void onManagedDrawChildren(final Camera pCamera) {
            final ArrayList<IEntity> children = this.mChildren;
            final int childCount = children.size();
            for(int i = 0; i < childCount; i++) {
                    children.get(i).onDraw(pCamera);
            }
    }

由于这是在一个单独的线程中运行,因此很可能是ArrayList在循环迭代时从子节点中删除对象.要解决这个问题,你应该ArrayList像jmr499485在他的回答中解释的那样给你的孩子打电话.

java.lang.IndexOutOfBoundsException:索引13无效,大小为13

您可以看到代码中唯一可能导致此问题的项目是questionText.detachSelf();您在许多地方使用过的语句.你应该改用;

runOnUpdateThread(new Runnable() {
@Override
public void run() {
    questionText.detachSelf();
}
});