我正在尝试创建在其数据库上使用触发器的应用程序。每当我尝试在Android Studio上运行它时,应用程序运行良好,代码中没有错误。但是当我尝试在MEmu或Lollipop手机上运行它时,会显示一些错误消息。我试图修复它,但现在有一条消息,当我试图在修复后启动它时。SQLite触发启动android应用程序时出错
了java.lang.RuntimeException:无法启动活动ComponentInfo {com.dexpensemanager/com.dexpensemanager.Home}:android.database.sqlite.SQLiteException:限定表名不允许在INSERT,UPDATE和DELETE触发器中的语句(代码1):,编译时:CREATE TRIGGER(如果不存在)sumcalc_income当TRANS.type =收入时,为每行执行TRANS TRANSFER INSERT TRANSFORMAT =收入AND strftime('%Y' - '%m','now','start ')BEGIN插入SUMTRANS.income SELECT SUM(收入)FROM TRANS.amount END; 在android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2460) 在android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2522) 在android.app.ActivityThread.access $ 800(ActivityThread.java:169) 在android.app.ActivityThread上$ android.os.Looper.loop(Looper.java:194) 在android.app.ActivityThread.main(ActivityThread.java:5546) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:967) 在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:762) 引起:android.database.sqlite.SQLiteException:不允许在触发器中的INSERT,UPDATE和DELETE语句中使用限定的表名(代码1 ):,编译时:如果不存在CREATE TRIGGER sumcalc_income当TRANS.type = income AND strftime('%Y' - '%m','now','month of'')时,为每行执行插入操作BEGIN insert到SUMTRANS.income SELECT SUM(收入)FROM TRANS.amount END; at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method) at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:898) at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:509 ) at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588) at android.database.sqlite.SQLiteProgram。(SQLiteProgram.java:58) at android.database.sqlite.SQLiteStatement。(SQLiteStatement.java :31) 在android.database.sqlite.SQLiteDatabase.executeSql(SQLiteDatabase.java:1704) 在android.database.sqlite.SQLiteDatabase.execSQL(SQLiteDatabase.java:1635) 在com.example.connectionDB.DBnTrigger.onCreate (DBnTrigger.java:45) 在android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked(SQLiteOpenHelper.java:251) 在android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:163) 在com.example.connectionDB.DBnTrigger.getLastIncome(DBnTrigger。的java:459) 在com.dexpensemanager.Home.onCreate(Home.java:61) 在android.app.Activity.performCreate(Activity.java:5975) 在android.app.Instrumentation.callActivityOnCreate(Instrumentation.java: 1111) 在android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2413) ...... 10多个
,这里是我的触发器的代码我把它从create trigger Reflective
public String insincTrigger() {
String insinc = "CREATE TRIGGER if not exists sumcalc_income "
+ " AFTER INSERT "
+ " ON "+TRANSACTION_TABLE
+ " FOR EACH ROW "
+ " WHEN "
+ " TRANS.type= income "
+ " AND strftime ('%Y'-'%m','now','start of month') "
+ " BEGIN "
+ " insert into SUMTRANS.income "
+ " SELECT SUM(income) FROM TRANS.amount "
+ " END; ";
return insinc;
}
public String insexpTrigger(){
String insexp = "CREATE TRIGGER if not exists sumcalc_expense "
+ " AFTER INSERT "
+ " ON "+TRANSACTION_TABLE
+ " FOR EACH ROW "
+ " WHEN "
+ " TRANS.type= expense "
+ " WHERE strftime ('%Y'-'%m','now','start of month') "
+ " BEGIN "
+ " insert into SUMTRANS.expense "
+ " SELECT SUM(expense) FROM TRANS.amount "
+ " END; ";
return insexp;
}
public String upincTrigger(){
String upinc = "CREATE TRIGGER if not exists usumcalc_income "
+ " AFTER UPDATE "
+ " OF [amount] "
+ " ON "+TRANSACTION_TABLE
+ " FOR EACH ROW "
+ " WHEN "
+ " TRANS.type= income "
+ " WHERE strftime ('%Y'-'%m','now','start of month') "
+ " BEGIN "
+ " UPDATE OR REPLACE "+TRANSACTION_SUM
+ " SET [income] = SELECT SUM(income) from TRANS.amount "
+ " END; ";
return upinc;
}
public String upexpTrigger() {
String upexp = "CREATE TRIGGER if not exists usumcalc_expense "
+ " AFTER UPDATE "
+ " OF [amount] "
+ " ON "+TRANSACTION_TABLE
+ " FOR EACH ROW "
+ " WHEN "
+ " TRANS.type= expense "
+ " WHERE strftime ('%Y'-'%m','now','start of month') "
+ " BEGIN "
+ " UPDATE OR REPLACE "+TRANSACTION_SUM
+ " SET [expense] = SELECT SUM(expense) from TRANS.amount "
+ " END; ";
return upexp;
}
public String delTrigger(){
String del = "CREATE TRIGGER if not exists sumcalc_delete "
+ " AFTER DELETE "
+ " ON "+TRANSACTION_TABLE
+ " FOR EACH ROW "
+ " WHEN "
+ " TRANS.type = income AND expense "
+ " WHERE strftime ('%Y'-'%m','now','start of month') "
+ " BEGIN "
+ " DELETE FROM "+TRANSACTION_SUM
+ " WHERE = SELECT SUM(income AND expense) from TRANS.amount "
+ " END; ";
return del;
}
public String instimeTrigger(){
String instime = "CREATE TRIGGER if not exists sumcalc_instime "
+ " AFTER INSERT "
+ " ON "+TRANSACTION_SUM
+ " FOR EACH ROW "
+ " BEGIN "
+ " insert into SUMTRANS.month "
+ " VALUES ('%Y'-'%m','now','start of month') "
+ " END;";
return instime;
}
public String deltimeTrigger(){
String deltime = "CREATE TRIGGER if not exists sumcalc_instime "
+ " AFTER DELETE "
+ " ON "+TRANSACTION_SUM
+ " FOR EACH ROW "
+ " BEGIN "
+ " DELETE FROM SUMTRANS.month "
+ " END; ";
return deltime;
}
有人能告诉我该怎么办?
谢谢。
在这个数据库中有2个表Transaction_table和sumtrans –