                        课程
                    
                        /移动开发
                        
                            /Android
                        
                        /Android美女拼图小游戏

加完动画效果运行程序交换图片时崩溃啦

java.lang.NullPointerException
            at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2488)
            at android.view.View.getDisplayList(View.java:10436)
            at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:2597)
            at android.view.View.getDisplayList(View.java:10401)
            at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:2597)
            at android.view.View.getDisplayList(View.java:10401)
            at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:2597)
            at android.view.View.getDisplayList(View.java:10401)
            at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:2597)
            at android.view.View.getDisplayList(View.java:10401)
            at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:2597)
            at android.view.View.getDisplayList(View.java:10401)
            at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:2597)
            at android.view.View.getDisplayList(View.java:10401)
            at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:2597)
            at android.view.View.getDisplayList(View.java:10401)
            at android.view.HardwareRenderer$GlRenderer.draw(HardwareRenderer.java:842)
            at android.view.ViewRootImpl.draw(ViewRootImpl.java:1910)
            at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1634)
            at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2445)
            at android.os.Handler.dispatchMessage(Handler.java:99)
            at android.os.Looper.loop(Looper.java:137)
            at android.app.ActivityThread.main(ActivityThread.java:4463)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:511)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:762)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:529)
            at dalvik.system.NativeStart.main(Native Method)