java - 在网格 View 中滚动时，滚动使程序崩溃

当我尝试滚动浏览单词时，程序崩 for(int i = 1; i<FormattedWords.length { WordSearch[i-1] = FormattedWords[i] }

，logcat也给了我
有任何想法吗？溃并抛出空指针异常。
但是我不知道为什么

我的网格视图是用数组创建的
    String [] WordSearch =  new String[FormattedWords.length]; ;i++) ; class="code wbreak">04-17 14:19:37.623: E/AndroidRuntime(5969): FATAL EXCEPTION: main java.lang.NullPointerException at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:394) at android.widget.ArrayAdapter.getView(ArrayAdapter.java:362) at android.widget.AbsListView.obtainView(AbsListView.java:2267) at android.widget.GridView.makeAndAddView(GridView.java:1331) at android.widget.GridView.makeRow(GridView.java:331) at android.widget.GridView.fillDown(GridView.java:283) at android.widget.GridView.fillGap(GridView.java:243) at android.widget.AbsListView.trackMotionScroll(AbsListView.java:5036) at android.widget.AbsListView.scrollIfNeeded(AbsListView.java:3193) at android.widget.AbsListView.startScrollIfNeeded(AbsListView.java:3138) at android.widget.AbsListView.onTouchEvent(AbsListView.java:3463) at android.view.View.dispatchTouchEvent(View.java:7127) at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2170) at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1905) at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2176) at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1919) at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2176) at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1919) at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2176) at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1919) at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2176) at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1919) at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1925) at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1379) at android.app.Activity.dispatchTouchEvent(Activity.java:2396) at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1873) at android.view.View.dispatchPointerEvent(View.java:7307) at android.view.ViewRootImpl.deliverPointerEvent(ViewRootImpl.java:3172) at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:3117) at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:4153) at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:4132) at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:4224) at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:171) at android.view.InputEventReceiver.nativeConsumeBatchedInputEvents(Native Method) at android.view.InputEventReceiver.consumeBatchedInputEvents(InputEventReceiver.java:163) at android.view.ViewRootImpl.doConsumeBatchedInput(ViewRootImpl.java:4203) at android.view.ViewRootImpl$ConsumeBatchedInputRunnable.run(ViewRootImpl.java:4243) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725) at android.view.Choreographer.doCallbacks(Choreographer.java:555) at android.view.Choreographer.doFrame(Choreographer.java:523) at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711) at android.os.Handler.handleCallback(Handler.java:615) at android.os.Handler.dispatchMessage(Handler.java:92) at android.os.Looper.loop(Looper.java:137) at android.app.ActivityThread.main(ActivityThread.java:4745) 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:786) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) at dalvik.system.NativeStart.main(Native Method)
                                    最佳答案            
            
            为什么for循环从1开始并插入数据呢？ NullPointerException很可能是由for循环导致将字符串插入WordSearch数组引起的。

例如。

假设FormattedWords是一个数组（您正在使用.length属性），如果FormattedWords.length为3并包含：

FormattedWords[0] = "a";
FormattedWords[1] = "b";
FormattedWords[2] = "c";


在for循环之后，WordSearch将包含：

WordSearch[0] = "b";
WordSearch[1] = "c";
WordSearch[2] = null;


您的问题似乎在这里。

编辑

如果要忽略FormattedWords中的第一个值，则应将WordSearch设置为大小FormattedWords.lenght - 1，以避免NPE。

例如。

String [] WordSearch =  new String[FormattedWords.length - 1];