第一次插入行时没有任何问题。但是在同一台设备上安装应用程序(从 Eclipse 安装而不从设备上卸载应用程序)并尝试插入新行后它会抛出异常
10-1216: 36: 38.405: E/AndroidRuntime(32429): Causedby:android.database.sqlite.SQLiteConstraintException: columnidisnotunique(code19)
10-12 16:36:38.405: E/AndroidRuntime(32429): Caused by: android.database.sqlite.SQLiteConstraintException: column id is not unique (code 19)
10-12 16:36:38.405: E/AndroidRuntime(32429): at android.database.sqlite.SQLiteConnection.nativeExecuteForChangedRowCount(Native Method)
10-12 16:36:38.405: E/AndroidRuntime(32429): at android.database.sqlite.SQLiteConnection.executeForChangedRowCount(SQLiteConnection.java:727)
10-12 16:36:38.405: E/AndroidRuntime(32429): at android.database.sqlite.SQLiteSession.executeForChangedRowCount(SQLiteSession.java:754)
10-12 16:36:38.405: E/AndroidRuntime(32429): at android.database.sqlite.SQLiteStatement.executeUpdateDelete(SQLiteStatement.java:64)
10-12 16:36:38.405: E/AndroidRuntime(32429): at android.database.sqlite.SQLiteDatabase.updateWithOnConflict(SQLiteDatabase.java:1565)
10-12 16:36:38.405: E/AndroidRuntime(32429): at android.database.sqlite.SQLiteDatabase.update(SQLiteDatabase.java:1514)
创建表:
public void onCreate(SQLiteDatabase db) {
String CREATE_CONTACTS_TABLE = "CREATE TABLE " + TABLE_USER_DATA + "("
+ KEY_ID + " TEXT PRIMARY KEY," + KEY_TIMESTAMP + " TEXT,"
+ KEY_JSON_DATA + " TEXT" + ")";
db.execSQL(CREATE_CONTACTS_TABLE);
}
插入:
public void addJsonData(JSONDataStore dataStore) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(KEY_ID, dataStore.getKey());
values.put(KEY_TIMESTAMP, dataStore.getTimeStamp());
values.put(KEY_JSON_DATA, dataStore.getJsonData());
db.insert(TABLE_USER_DATA, null, values);
}
升级:
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
db.execSQL("DROP TABLE IF EXISTS " + TABLE_USER_DATA);
onCreate(db);
}
插入时异常:
db.insert(TABLE_USER_DATA, null, values);
最佳答案
该错误告诉您,您正在尝试为定义为 PRIMARY KEY
的 ID
列创建具有相同值的两行。为了让 sqlite 为您创建自动递增的 ID 值,只需删除这一行。-
values.put(KEY_ID, dataStore.getKey());
并将列声明为 INTEGER
。
关于android.database.sqlite.SQLiteConstraintException : columnidisnotunique(code19) android. 数据库.sqlite.SQLiteConstraintException,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/19333533/