Android cocos2d添加子节点抛出空指针异常
我对 cocos2d 非常陌生。我正在使用 cocos2d 在 android 中开发一个应用程序。其中，
public class BaseLayer extends CCLayer {
ChildLayer cl = new ChildLayer();
this.addChild(cl); ------------------------------>
}
public class ChildLayer extends CCLayer {
public ChildLayer() {
CCLayer.node();
}
.
.
}
箭头线抛出空指针异常。 错误日志如下..
E/AndroidRuntime(982): FATAL EXCEPTION: GLThread 8
11-26 12:50:33.364: E/AndroidRuntime(982): java.lang.NullPointerException
11-26 12:50:33.364: E/AndroidRuntime(982): at org.cocos2d.nodes.CCSprite.draw(CCSprite.java:871)
11-26 12:50:33.364: E/AndroidRuntime(982): at org.cocos2d.nodes.CCNode.visit(CCNode.java:674)
11-26 12:50:33.364: E/AndroidRuntime(982): at org.cocos2d.nodes.CCNode.visit(CCNode.java:680)
11-26 12:50:33.364: E/AndroidRuntime(982): at org.cocos2d.nodes.CCNode.visit(CCNode.java:680)
11-26 12:50:33.364: E/AndroidRuntime(982): at org.cocos2d.nodes.CCNode.visit(CCNode.java:680)
11-26 12:50:33.364: E/AndroidRuntime(982): at org.cocos2d.nodes.CCDirector.drawCCScene(CCDirector.java:683)
11-26 12:50:33.364: E/AndroidRuntime(982): at org.cocos2d.nodes.CCDirector.onDrawFrame(CCDirector.java:651)
11-26 12:50:33.364: E/AndroidRuntime(982): at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1332)
11-26 12:50:33.364: E/AndroidRuntime(982): at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1116)
11-26 12:50:34.023: E/libEGL(982): call to OpenGL ES API with no current context (logged once per thread)
我不知道如何解决这个问题..我不知道为什么会发生这种情况..因为我对Cocos2d不太熟悉..请帮我解决这个问题。有人请帮助我..
I am very much new to cocos2d.. I am developing an application in android using cocos2d.. In that,
public class BaseLayer extends CCLayer {
ChildLayer cl = new ChildLayer();
this.addChild(cl); ------------------------------>
}
public class ChildLayer extends CCLayer {
public ChildLayer() {
CCLayer.node();
}
.
.
}
In this, arrowed line throws the Null pointer exception..
Error Log is below..
E/AndroidRuntime(982): FATAL EXCEPTION: GLThread 8
11-26 12:50:33.364: E/AndroidRuntime(982): java.lang.NullPointerException
11-26 12:50:33.364: E/AndroidRuntime(982): at org.cocos2d.nodes.CCSprite.draw(CCSprite.java:871)
11-26 12:50:33.364: E/AndroidRuntime(982): at org.cocos2d.nodes.CCNode.visit(CCNode.java:674)
11-26 12:50:33.364: E/AndroidRuntime(982): at org.cocos2d.nodes.CCNode.visit(CCNode.java:680)
11-26 12:50:33.364: E/AndroidRuntime(982): at org.cocos2d.nodes.CCNode.visit(CCNode.java:680)
11-26 12:50:33.364: E/AndroidRuntime(982): at org.cocos2d.nodes.CCNode.visit(CCNode.java:680)
11-26 12:50:33.364: E/AndroidRuntime(982): at org.cocos2d.nodes.CCDirector.drawCCScene(CCDirector.java:683)
11-26 12:50:33.364: E/AndroidRuntime(982): at org.cocos2d.nodes.CCDirector.onDrawFrame(CCDirector.java:651)
11-26 12:50:33.364: E/AndroidRuntime(982): at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1332)
11-26 12:50:33.364: E/AndroidRuntime(982): at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1116)
11-26 12:50:34.023: E/libEGL(982): call to OpenGL ES API with no current context (logged once per thread)
I dont know how to resolve this issue.. I dont know why this occurs.. Since I am not much familiar with Cocos2d.. Please help me to resolve this issue. Somebody please help me..
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这已经解决了..在构造函数中，我调用了超类构造函数，例如CCLayer.node()而不是super()
我改变了，问题就解决了..
This is solved.. In constructor,I have called the super class constructor like CCLayer.node() instead of super()
I changed that and the problem is solved..