android.database.CursorIndexOutOfBoundsException: Index -1 requested, with a size of 14

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当我只删除数据库中的一条数据时，报了一下错误：

02-09 11:03:43.970 6556-6556/com.aabao.adnroid E/AndroidRuntime: FATAL EXCEPTION: main
                                                                 android.database.CursorIndexOutOfBoundsException: Index -1 requested, with a size of 14
                                                                     at android.database.AbstractCursor.checkPosition(AbstractCursor.java:424)
                                                                     at android.database.AbstractWindowedCursor.checkPosition(AbstractWindowedCursor.java:136)
                                                                     at android.database.AbstractWindowedCursor.getString(AbstractWindowedCursor.java:50)
                                                                     at com.aabao.adnroid.fragment.MPFragment.onClick(MPFragment.java:363)
                                                                     at android.view.View.performClick(View.java:4204)
                                                                     at android.view.View$PerformClick.run(View.java:17355)
                                                                     at android.os.Handler.handleCallback(Handler.java:725)
                                                                     at android.os.Handler.dispatchMessage(Handler.java:92)
                                                                     at android.os.Looper.loop(Looper.java:137)
                                                                     at android.app.ActivityThread.main(ActivityThread.java:5041)
                                                                     at java.lang.reflect.Method.invokeNative(Native Method)
                                                                     at java.lang.reflect.Method.invoke(Method.java:511)
                                                                     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
                                                                     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
                                                                     at dalvik.system.NativeStart.main(Native Method)

CursorIndexOutOfBoundsException: Index -1 requested, with a size of 14 意思是Cursor标记越界异常：index位-1，有14条数据

显然 index = -1是没有数据的，Cursor是从index = -1开始的，一般遍历数据库会用到Cursor.moveToNext() 方法，当有下一条数据的时候才会使用Cursor

知道了原理就好说了，得到一条数据时调用moveToNext()方法就可以啦

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