Android项目调试报错:android.view.InflateException: Binary XML file line #17:

详细信息android.view.InflateException: Binary XML file line #17: Attempt to invoke virtual method 'boolean java.lang.String.equals(java.lang.Object)' on a null object reference

<view
    android:layout_width="260dp"
    android:layout_height="4dp"
    android:layout_marginTop="-50dp"
    android:layout_gravity="center"
    android:gravity="center"/>

解决:这里View应该大写。