java.lang.IllegalArgumentException:清空bindArgs

Question

很抱歉再次烦恼,我是Sqlite新手,需要一些帮助.

我正在尝试更新表中单行的单个字段.

我尝试这样做:

db.getWritableDatabase().execSQL("UPDATE data SET korean = "
+kopulito+ " WHERE _id = " + constantsCursor.getString(0), null);

但是我得到了上面提到的错误.这是我的LogCat.

05-05 09:58:07.776: E/AndroidRuntime(30495): FATAL EXCEPTION: main
05-05 09:58:07.776: E/AndroidRuntime(30495): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.koday/com.example.koday.MainActivity}: java.lang.IllegalArgumentException: Empty bindArgs
05-05 09:58:07.776: E/AndroidRuntime(30495):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
05-05 09:58:07.776: E/AndroidRuntime(30495):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
05-05 09:58:07.776: E/AndroidRuntime(30495):    at android.app.ActivityThread.access$1500(ActivityThread.java:117)
05-05 09:58:07.776: E/AndroidRuntime(30495):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
05-05 09:58:07.776: E/AndroidRuntime(30495):    at android.os.Handler.dispatchMessage(Handler.java:99)
05-05 09:58:07.776: E/AndroidRuntime(30495):    at android.os.Looper.loop(Looper.java:130)
05-05 09:58:07.776: E/AndroidRuntime(30495):    at android.app.ActivityThread.main(ActivityThread.java:3683)
05-05 09:58:07.776: E/AndroidRuntime(30495):    at java.lang.reflect.Method.invokeNative(Native Method)
05-05 09:58:07.776: E/AndroidRuntime(30495):    at java.lang.reflect.Method.invoke(Method.java:507)
05-05 09:58:07.776: E/AndroidRuntime(30495):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
05-05 09:58:07.776: E/AndroidRuntime(30495):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
05-05 09:58:07.776: E/AndroidRuntime(30495):    at dalvik.system.NativeStart.main(Native Method)
05-05 09:58:07.776: E/AndroidRuntime(30495): Caused by: java.lang.IllegalArgumentException: Empty bindArgs
05-05 09:58:07.776: E/AndroidRuntime(30495):    at android.database.sqlite.SQLiteDatabase.execSQL(SQLiteDatabase.java:1793)
05-05 09:58:07.776: E/AndroidRuntime(30495):    at com.example.koday.MainActivity.updateall(MainActivity.java:301)
05-05 09:58:07.776: E/AndroidRuntime(30495):    at com.example.koday.MainActivity.onCreate(MainActivity.java:72)
05-05 09:58:07.776: E/AndroidRuntime(30495):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
05-05 09:58:07.776: E/AndroidRuntime(30495):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
05-05 09:58:07.776: E/AndroidRuntime(30495):    ... 11 more

非常感谢.

Answer 1

这适用于我:只需从execSql命令中删除null参数

Answer 2

实际上您可以execSql用来更新数据.只需在方法中删除"null"参数execSql,所以更改此:

db.getWritableDatabase().execSQL("UPDATE data SET korean = " +kopulito+ " WHERE _id = " + constantsCursor.getString(0), null);

至

db.getWritableDatabase().execSQL("UPDATE data SET korean = " +kopulito+ " WHERE _id = " + constantsCursor.getString(0));

这很完美.

Answer 3

您可以用于execSql更新数据。

null只需从 execSql 命令中删除该参数即可。