我想在我的SQLite数据库中创建两个表。创建了一个表（exptable），但是第二个表（inctable）给了我一个没有这样的表的错误。
这是我的数据处理程序代码：
package com.example.pocketmanager;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
public class DataHandler {
public static final String DATE= "date";
public static final String EAMT ="eamt";
public static final String EPAYEE= "epayee";
public static final String ECATEGORY ="ecategory";
public static final String TABLE_NAME= "exptable";
public static final String IDATE= "idate";
public static final String IAMT ="iamt";
public static final String IPAYEE= "ipayee";
public static final String ICATEGORY ="icategory";
public static final String TABLE_NAME1= "inctable";
public static final String DATA_BASE_NAME = "expdatabase";
public static final int DATABASE_VERSION = 1;
public static final String TABLE_CREATE ="create table exptable (date text not null, eamt string not null, epayee text not null, ecategory text not null)";
public static final String TABLE_CREATE1 ="create table inctable (idate text not null, iamt string not null, ipayee text not null, icategory text not null)";
DataBaseHelper dbhelper;
Context ctx;
SQLiteDatabase db;
public DataHandler(Context ctx)
{
this.ctx= ctx;
dbhelper = new DataBaseHelper (ctx);
}
private static class DataBaseHelper extends SQLiteOpenHelper
{
public DataBaseHelper (Context ctx)
{
super(ctx, DATA_BASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
try{
db.execSQL(TABLE_CREATE);
db.execSQL(TABLE_CREATE1);
}
catch(SQLException e)
{
e.printStackTrace();
}
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
db.execSQL("DROP TABLE IF EXISTS exptable");
db.execSQL("DROP TABLE IF EXISTS inctable");
onCreate(db);
}
}
public DataHandler open()
{
db = dbhelper.getWritableDatabase();
return this;
}
public void close()
{
dbhelper.close();
}
public long insertData(String date, String eamt, String epayee, String ecategory)
{
ContentValues content = new ContentValues();
content.put(DATE, date);
content.put(EAMT, eamt);
content.put(EPAYEE, epayee);
content.put(ECATEGORY, ecategory);
return db.insertOrThrow(TABLE_NAME, null, content);
}
public Cursor returnData()
{
return db.query(TABLE_NAME, new String[] {DATE, EAMT, EPAYEE, ECATEGORY},null,null, null, null, null);
}
public long insertData1(String idate, String iamt, String ipayee, String icategory)
{
ContentValues content1 = new ContentValues();
content1.put(IDATE, idate);
content1.put(IAMT, iamt);
content1.put(IPAYEE, ipayee);
content1.put(ICATEGORY, icategory);
return db.insertOrThrow(TABLE_NAME1, null, content1);
}
public Cursor returnData1()
{
return db.query(TABLE_NAME1, new String[] {IDATE, IAMT, IPAYEE, ICATEGORY},null,null, null, null, null);
}
}
这是我的Log cat：
05-20 07:09:29.097: E/SQLiteLog(1545): (1) no such table: inctable
05-20 07:09:29.097: D/AndroidRuntime(1545): Shutting down VM
05-20 07:09:29.097: W/dalvikvm(1545): threadid=1: thread exiting with uncaught exception (group=0x40a71930)
05-20 07:09:29.137: E/AndroidRuntime(1545): FATAL EXCEPTION: main
05-20 07:09:29.137: E/AndroidRuntime(1545): android.database.sqlite.SQLiteException: no such table: inctable (code 1): , while compiling: INSERT INTO inctable(iamt,idate,icategory,ipayee) VALUES (?,?,?,?)
05-20 07:09:29.137: E/AndroidRuntime(1545): at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
05-20 07:09:29.137: E/AndroidRuntime(1545): at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:882)
05-20 07:09:29.137: E/AndroidRuntime(1545): at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:493)
05-20 07:09:29.137: E/AndroidRuntime(1545): at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588)
05-20 07:09:29.137: E/AndroidRuntime(1545): at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58)
05-20 07:09:29.137: E/AndroidRuntime(1545): at android.database.sqlite.SQLiteStatement.<init>(SQLiteStatement.java:31)
05-20 07:09:29.137: E/AndroidRuntime(1545): at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1467)
05-20 07:09:29.137: E/AndroidRuntime(1545): at android.database.sqlite.SQLiteDatabase.insertOrThrow(SQLiteDatabase.java:1365)
05-20 07:09:29.137: E/AndroidRuntime(1545): at com.example.pocketmanager.DataHandler.insertData1(DataHandler.java:107)
05-20 07:09:29.137: E/AndroidRuntime(1545): at com.example.pocketmanager.Income$2.onClick(Income.java:72)
05-20 07:09:29.137: E/AndroidRuntime(1545): at android.view.View.performClick(View.java:4204)
05-20 07:09:29.137: E/AndroidRuntime(1545): at android.view.View$PerformClick.run(View.java:17355)
05-20 07:09:29.137: E/AndroidRuntime(1545): at android.os.Handler.handleCallback(Handler.java:725)
05-20 07:09:29.137: E/AndroidRuntime(1545): at android.os.Handler.dispatchMessage(Handler.java:92)
05-20 07:09:29.137: E/AndroidRuntime(1545): at android.os.Looper.loop(Looper.java:137)
05-20 07:09:29.137: E/AndroidRuntime(1545): at android.app.ActivityThread.main(ActivityThread.java:5041)
05-20 07:09:29.137: E/AndroidRuntime(1545): at java.lang.reflect.Method.invokeNative(Native Method)
05-20 07:09:29.137: E/AndroidRuntime(1545): at java.lang.reflect.Method.invoke(Method.java:511)
05-20 07:09:29.137: E/AndroidRuntime(1545): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
05-20 07:09:29.137: E/AndroidRuntime(1545): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
05-20 07:09:29.137: E/AndroidRuntime(1545): at dalvik.system.NativeStart.main(Native Method)
答案 0 :(得分：0)
首先，从帮助器try中删除catch - onCreate()。如果有问题，请不要压制它。
其次，卸载您的应用，以便删除旧的数据库文件。见When is SQLiteOpenHelper onCreate() / onUpgrade() run?