求告知这是什么类型安卓错误

threadid=1:thread exiting with uncaught exception(group=0xb3ad1b90)

出错原因代码：

<Button
android:name="@+id/ok"

    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:longClickable="true"
    android:text="@string/OK" />

出错改正代码：

<Button
android:id="@+id/ok"

    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:longClickable="true"
    android:text="@string/OK" />

http://blog.csdn.net/lijianli9/article/details/37735299
http://zhidao.baidu.com/link?url=MiUrf0ZXM2whKmH6WVe-Ucdg2OiYbsQvuqnZJEVlic8tcWhHirLQphRP-xN9cx_61AoiCAOxUUQE7KN3ATOMZ5cJNVIzXW1vFfj1QBtEbJO