android外鍵。程序崩潰

public static final String TABLE_TASKS = "tasks"; 
public static final String COLUMN_ID = "_id"; 
public static final String COLUMN_TASK = "task"; 
public static final String COLUMN_TIME = "time"; 
public static final String COLUMN_INITDATE = "initdate"; 
public static final String COLUMN_PRIORITY="priority"; 

public static final String TABLE_REPEAT = "alarms"; 
public static final String COLUMN_AID = "_aid"; 
public static final String COLUMN_TID = "tid";

public static final String COLUMN_DAYS =「days」;android外鍵。程序崩潰

private static final String DATABASE1_CREATE = "create table " + TABLE_TASKS + "(" 
+ COLUMN_ID + " integer primary key autoincrement, "+ COLUMN_TASK 
+ " text not null, "+ COLUMN_TIME+" integer not null, "+ COLUMN_INITDATE+" integer not null, "+ COLUMN_PRIORITY +" integer);"; 

private static final String DATABASE2_CREATE = "create table " + TABLE_REPEAT + "(" 
     + COLUMN_AID + " integer primary key autoincrement, "+ " FOREIGN KEY (" + COLUMN_TID + ") REFERENCES " + TABLE_TASKS + " (" + COLUMN_ID + "), "+ COLUMN_DAYS + " text not null);";

我logcat的是： 9月3日至6日：17：07.051：E/AndroidRuntime（1029）：了java.lang.RuntimeException：無法啓動活動ComponentInfo {com.example.habitator/com。示例.abitator.Habitator}：android.database.sqlite.SQLiteException：外鍵定義中的未知列「tid」（代碼1）：，編譯時：create table報警（_aid整數主鍵自動增量，FOREIGN KEY（tid）REFERENCES任務_id），天文字不爲空）;

請幫我找到錯誤！爲什麼我的程序崩潰？

來源

2013-03-06 AnRu

試試這個查詢。

create table alarms(_aid integer primary key autoincrement, tid integer FOREIGNKEY REFERENCES tasks (_id), days text not null);

https://www.sqlite.org/foreignkeys.html

來源

2013-03-06 09:38:16

日Thnx亞爾.. DIS一個工作得很好:) – AnRu 2013-03-06 10:17:32

我是做錯了也。我使用了FOREIGN KEY（payment_method）REFERENCES payment_method（id），但我在使用外鍵定義（代碼1）時發生錯誤「unknown列payment_method：」....我最終使用了payment_method INTEGER FOREIGNKEY REFERENCES payment_method（id）和它工作完美。 – Binaryrespawn 2015-10-14 16:17:14

android外鍵。程序崩潰

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