我有一个2列的表。插入所有值为AutoIncrement或默认值的记录
- 键 - 主键,自动递增
- 时间戳 - 日期时间,默认 - > CURRENT_TIMESTAMP
我试图插入值到这个表SqliteOpenHelper对象的帮助。但是,它抛出一个异常:
public void logTime() {
SQLiteDatabase db = getWritableDatabase();
db.insert(TABLE_LOG_TIME, null, new ContentValues());
}
例外:
E/SQLiteLog: (1) near "null": syntax error
E/SQLiteDatabase: Error inserting
android.database.sqlite.SQLiteException: near "null": syntax error (code 1): , while compiling: INSERT INTO log_time(null) VALUES (NULL)
at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:887)
at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:498)
at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588)
at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58)
at android.database.sqlite.SQLiteStatement.<init>(SQLiteStatement.java:31)
at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1469)
at android.database.sqlite.SQLiteDatabase.insert(SQLiteDatabase.java:1341)
at com.livinglifetechway.mytime.db.DatabaseHelper.logScreenUnlock(DatabaseHelper.java:62)
at com.livinglifetechway.mytime.ScreenUnlockBroadcastReceiver.onReceive(ScreenUnlockBroadcastReceiver.java:25)
at android.app.ActivityThread.handleReceiver(ActivityThread.java:2732)
at android.app.ActivityThread.access$1800(ActivityThread.java:153)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1428)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5441)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:738)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:628)
数据库的onCreate拨打:
@Override
public void onCreate(SQLiteDatabase db) {
// Create Statements
String CREATE_TABLE_LOG_TIME = "CREATE TABLE " + TABLE_LOG_TIME + " " +
"(" +
KEY_LOG_TIME_ID + " INTEGER PRIMARY KEY AUTOINCREMENT, " +
KEY_LOG_TIME_TIME + " DATETIME DEFAULT CURRENT_TIMESTAMP" +
")";
// Execute statements
db.execSQL(CREATE_TABLE_LOG_TIME);
}
所有值都默认/ AUTO_INCREMENT值。
如何在此表中插入记录?
什么是你的事在db.insert(TABLE_LOG_TIME,null,new ContentValues())之前进行操作;你能表现出来吗? – Rahul
您的数据库实施代码? –
@Rahul这2行是简单的普通方法。 – kirtan403