bugly上报了几个snake的奔溃，帮忙优化一下

[zfnian]

#7024 java.lang.NullPointerException Attempt to invoke virtual method 'int android.view.View.getImportantForAccessibility()' on a null object reference com.youngfeng.snake.view.SnakeHackLayout.onLayout(SnakeHackLayout.java:268)

#28304 java.lang.IndexOutOfBoundsException Index: 2, Size: 0 com.youngfeng.snake.view.SnakeHackLayout.dispatchTouchEvent(SnakeHackLayout.java:4)

[zfnian]

第一个空指针，可以做个判空规避一下； 第二个数组越界不知道怎么解决，从dispatchTouchEvent(SnakeHackLayout.java:4)里引起，以下是全部推栈：

java.lang.IndexOutOfBoundsException Index: 1, Size: 0 1 java.util.ArrayList.get(ArrayList.java:437) 2 android.view.ViewGroup.getAndVerifyPreorderedView(ViewGroup.java:3568) 3 android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2583) 4 android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2988) 5 android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2613) 6 android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2988) 7 android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2613) 8 android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2988) 9 android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2613) 10 android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2988) 11 android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2613) 12 com.youngfeng.snake.view.SnakeHackLayout.dispatchTouchEvent(SnakeHackLayout.java:4) 13 android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2988)

[zfnian]

上述2个问题如果解决了，请发邮件给我 ：[email protected]