1

由于调用了执行查询的方法，我得到了这个异常。问题是它告诉我一个列不存在，实际上我将它重命名为再次创建了数据库。奇怪的是，调用一直在询问我 query() 的“Columns[]”参数中的列，但如果我添加它，它会再次询问我。我不明白。列名为'bookmark_title' 重命名为'title' 你有什么提示吗？非常感谢。

方法调用：

    public Cursor bookmarksURLs(int user_id){

    Cursor result;
    String bookmarks="bookmarks";
    String [] columns={"_id","bookmark_url","title","bookmark_title","fk_user_bookmark"};
    String where = "fk_user_bookmark = 1";          
    try {
        result = db.query(bookmarks,columns,where,null,null,null,null);         
        return result;
    } catch (SQLiteException e){
        Log.v("Query","Error en el query");
        e.printStackTrace();
    }
    return null;
}

不包含“bookmark_title”的日志

10-22 17:42:34.604: INFO/ActivityManager(58): Starting activity: Intent { cmp=example.android.com/.BookmarkList }
    10-22 17:42:34.824: INFO/System.out(335): Base de datos abierta
    10-22 17:42:34.835: DEBUG/AndroidRuntime(335): Shutting down VM
    10-22 17:42:34.835: WARN/dalvikvm(335): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
    10-22 17:42:34.855: ERROR/AndroidRuntime(335): FATAL EXCEPTION: main
    10-22 17:42:34.855: ERROR/AndroidRuntime(335): java.lang.RuntimeException: Unable to start activity ComponentInfo{example.android.com/example.android.com.BookmarkList}: java.lang.IllegalArgumentException: column 'bookmark_title' does not exist
    10-22 17:42:34.855: ERROR/AndroidRuntime(335):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
    10-22 17:42:34.855: ERROR/AndroidRuntime(335):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
    10-22 17:42:34.855: ERROR/AndroidRuntime(335):     at android.app.ActivityThread.access$2300(ActivityThread.java:125)
    10-22 17:42:34.855: ERROR/AndroidRuntime(335):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
    10-22 17:42:34.855: ERROR/AndroidRuntime(335):     at android.os.Handler.dispatchMessage(Handler.java:99)
    10-22 17:42:34.855: ERROR/AndroidRuntime(335):     at android.os.Looper.loop(Looper.java:123)
    10-22 17:42:34.855: ERROR/AndroidRuntime(335):     at android.app.ActivityThread.main(ActivityThread.java:4627)
    10-22 17:42:34.855: ERROR/AndroidRuntime(335):     at java.lang.reflect.Method.invokeNative(Native Method)
    10-22 17:42:34.855: ERROR/AndroidRuntime(335):     at java.lang.reflect.Method.invoke(Method.java:521)
    10-22 17:42:34.855: ERROR/AndroidRuntime(335):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
    10-22 17:42:34.855: ERROR/AndroidRuntime(335):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
    10-22 17:42:34.855: ERROR/AndroidRuntime(335):     at dalvik.system.NativeStart.main(Native Method)
    10-22 17:42:34.855: ERROR/AndroidRuntime(335): Caused by: java.lang.IllegalArgumentException: column 'bookmark_title' does not exist
    10-22 17:42:34.855: ERROR/AndroidRuntime(335):     at android.database.AbstractCursor.getColumnIndexOrThrow(AbstractCursor.java:314)
    10-22 17:42:34.855: ERROR/AndroidRuntime(335):     at android.widget.SimpleCursorAdapter.findColumns(SimpleCursorAdapter.java:312)
    10-22 17:42:34.855: ERROR/AndroidRuntime(335):     at android.widget.SimpleCursorAdapter.<init>(SimpleCursorAdapter.java:87)
    10-22 17:42:34.855: ERROR/AndroidRuntime(335):     at example.android.com.BookmarkList.onCreate(BookmarkList.java:22)
    10-22 17:42:34.855: ERROR/AndroidRuntime(335):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
    10-22 17:42:34.855: ERROR/AndroidRuntime(335):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
    10-22 17:42:34.855: ERROR/AndroidRuntime(335):     ... 11 more
    10-22 17:42:34.885: WARN/ActivityManager(58):   Force finishing activity example.android.com/.BookmarkList
    10-22 17:42:34.885: WARN/ActivityManager(58):   Force finishing activity example.android.com/.AndroidBoorkmarksActivity
    10-22 17:42:35.384: WARN/ActivityManager(58): Activity pause timeout for HistoryRecord{4508e9e0 example.android.com/.BookmarkList}
    10-22 17:42:45.746: WARN/ActivityManager(58): Activity destroy timeout for HistoryRecord{44fd28a8 example.android.com/.AndroidBoorkmarksActivity}
    10-22 17:42:45.765: WARN/ActivityManager(58): Activity destroy timeout for HistoryRecord{4508e9e0 example.android.com/.BookmarkList}

包含“bookmark_title”的日志

 10-22 17:51:57.455: WARN/System.err(528): android.database.sqlite.SQLiteException: no such column: bookmark_title: , while compiling: SELECT _id, bookmark_url, title, bookmark_title, fk_user_bookmark FROM bookmarks WHERE fk_user_bookmark = 1
10-22 17:51:57.465: WARN/System.err(528):     at android.database.sqlite.SQLiteCompiledSql.native_compile(Native Method)
10-22 17:51:57.465: WARN/System.err(528):     at android.database.sqlite.SQLiteCompiledSql.compile(SQLiteCompiledSql.java:91)
10-22 17:51:57.465: WARN/System.err(528):     at android.database.sqlite.SQLiteCompiledSql.<init>(SQLiteCompiledSql.java:64)
10-22 17:51:57.465: WARN/System.err(528):     at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:80)
10-22 17:51:57.475: WARN/System.err(528):     at android.database.sqlite.SQLiteQuery.<init>(SQLiteQuery.java:46)
10-22 17:51:57.475: WARN/System.err(528):     at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:42)
10-22 17:51:57.475: WARN/System.err(528):     at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1345)
10-22 17:51:57.485: WARN/System.err(528):     at android.database.sqlite.SQLiteDatabase.queryWithFactory(SQLiteDatabase.java:1229)
10-22 17:51:57.485: WARN/System.err(528):     at android.database.sqlite.SQLiteDatabase.query(SQLiteDatabase.java:1184)
10-22 17:51:57.495: WARN/System.err(528):     at android.database.sqlite.SQLiteDatabase.query(SQLiteDatabase.java:1264)
10-22 17:51:57.495: WARN/System.err(528):     at example.android.com.DatabaseHandler.bookmarksURLs(DatabaseHandler.java:53)
10-22 17:51:57.495: WARN/System.err(528):     at example.android.com.BookmarkList.onCreate(BookmarkList.java:17)
10-22 17:51:57.505: WARN/System.err(528):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
10-22 17:51:57.505: WARN/System.err(528):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
10-22 17:51:57.505: WARN/System.err(528):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
10-22 17:51:57.505: WARN/System.err(528):     at android.app.ActivityThread.access$2300(ActivityThread.java:125)
10-22 17:51:57.515: WARN/System.err(528):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
10-22 17:51:57.515: WARN/System.err(528):     at android.os.Handler.dispatchMessage(Handler.java:99)
10-22 17:51:57.515: WARN/System.err(528):     at android.os.Looper.loop(Looper.java:123)
10-22 17:51:57.515: WARN/System.err(528):     at android.app.ActivityThread.main(ActivityThread.java:4627)
10-22 17:51:57.525: WARN/System.err(528):     at java.lang.reflect.Method.invokeNative(Native Method)
10-22 17:51:57.525: WARN/System.err(528):     at java.lang.reflect.Method.invoke(Method.java:521)
10-22 17:51:57.525: WARN/System.err(528):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
10-22 17:51:57.525: WARN/System.err(528):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
10-22 17:51:57.525: WARN/System.err(528):     at dalvik.system.NativeStart.main(Native Method)
4

2 回答 2

1

您是否检查过数据库中的实际内容？您可以通过调用adb shell然后导航到存储数据库的目录并执行 sqlite3 命令来做到这一点。您将能够检查数据库的确切内容。

请注意，您的数据库可能位于模拟器上的 /data/data/you.package.name 中。有关adb shell命令和 sqlite3 命令的更多信息，请查看此文档。它向您展示了如何在您的设备上准确获取 shell 并检查 sqlite 数据库。

于 2011-10-22T18:24:50.577 回答
0

您的columns数组同时具有"title"和"bookmark_title"：

String [] columns={"_id","bookmark_url","title","bookmark_title","fk_user_bookmark"};

但是你说bookmark_title现在叫title。我猜你不小心留下了一些东西columns，应该是这样的：

String [] columns={"_id", "bookmark_url", "title", "fk_user_bookmark"};
于 2011-10-22T18:27:06.460 回答