我的应用程序使用数据库。在我的nexus 4（未植根）4.2.1 上，该应用程序正在运行并且数据库已正确安装。但是在我的 Iconia A501 4.0.3 上，植根后，该应用程序无法运行，并且一条消息说数据库不存在。
数据库位于资产目录中的脚本文件中，这是用于 DB.java 的代码：
package fr.app.tutorielfragment;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import android.content.ContentValues;
import android.content.Context;
import android.content.res.AssetManager;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.util.Log;
import android.widget.Toast;
import android.content.ContextWrapper;
public class DB extends SQLiteOpenHelper {
// All Static variables
// Database Version
private static final int DATABASE_VERSION = 28;
// Database Name
// private static final String DATABASE_NAME = "contactsManager";
private static final String DATABASE_NAME = "BASE2.db";
public static final String METIER_TABLE_DROP = "DROP TABLE IF EXISTS " + DATABASE_NAME + ";";
Context context;
public DB(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
// Store the context for later use
this.context = context;
Toast.makeText(context, "DB context",1000).show();
}
// Creating Tables
@Override
public void onCreate(SQLiteDatabase database) {
String a = null;
Log.d("aaa","Création des bases");
Toast.makeText(context, "Création des bases",1000).show();
// creer la base avec le script
executeSQLScript(database, "install7.sql");
Log.d("aaa","Création des bases");
a=a;
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// TODO Auto-generated method stub
// Lorsque l'on change le numéro de version de la base on supprime la
// table puis on la recrée
if (oldVersion < DATABASE_VERSION) {
try
{
context.deleteDatabase(DATABASE_NAME);
onCreate(db);
Toast.makeText(context, "Supression des bases",1000).show();
// db.execSQL("DROP TABLE " + "base_codematiere" + ";");
}
catch (SQLException e)
{
Toast.makeText(context, "ERREUR pdt Supression des bases",1000).show();
// TODO Handle Script Failed to Execute
e=e;
e=e;
}
db.close();
}
Toast.makeText(context, "onUpgrade",1000).show();
}
public void removeAll()
{
// db.delete(String tableName, String whereClause, String[] whereArgs);
// If whereClause is null, it will delete all rows.
SQLiteDatabase db = this.getWritableDatabase(); // helper is object extends SQLiteOpenHelper
db.delete(DATABASE_NAME, null, null);
// db.delete(DatabaseHelper.TAB_USERS_GROUP, null, null);
}
private void executeSQLScript(SQLiteDatabase database, String dbname)
{
int num=0;
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
byte buf[] = new byte[1024];
int len;
AssetManager assetManager = context.getAssets();
InputStream inputStream = null;
try
{
inputStream = assetManager.open(dbname);
while ((len = inputStream.read(buf)) != -1)
{
outputStream.write(buf, 0, len);
}
outputStream.close();
inputStream.close();
String[] createScript = outputStream.toString().split(";");
for (int i = 0; i < createScript.length; i++)
{
String sqlStatement = createScript[i].trim();
// TODO You may want to parse out comments here
if (sqlStatement.length() > 0)
{
database.execSQL(sqlStatement + ";");
num=num+1;
}
}
len=createScript.length;
}
catch (IOException e)
{
// TODO Handle Script Failed to Load
e=e;
e=e;
}
catch (SQLException e)
{
// TODO Handle Script Failed to Execute
e=e;
e=e;
}
}
}
有人能解释一下为什么它在我的nexus4上工作正常，为什么在A501上不能工作？以及如何在 A501 上午餐我的应用程序？
提前谢谢，
更新：日志猫：
04-02 19:18:53.847: D/dalvikvm(15243): GC_FOR_ALLOC freed 2160K, 29% free 10164K/14151K, paused 21ms
04-02 19:18:53.877: I/SqliteDatabaseCpp(15243): sqlite returned: error code = 1, msg = statement aborts at 2: [BEGIN TRANSACTION;] cannot start a transaction within a transaction, db=/data/data/fr.app.tutorielfragment/databases/BASE2.db
04-02 19:18:53.877: D/aaa(15243): Création des bases
04-02 19:18:53.977: I/SqliteDatabaseCpp(15243): sqlite returned: error code = 1, msg = no such table: ID_DANGER_CLASSE_1, db=/data/data/fr.app.tutorielfragment/databases/BASE2.db
04-02 19:18:53.977: D/AndroidRuntime(15243): Shutting down VM
04-02 19:18:53.977: W/dalvikvm(15243): threadid=1: thread exiting with uncaught exception (group=0x40a681f8)
04-02 19:18:53.987: E/AndroidRuntime(15243): FATAL EXCEPTION: main
04-02 19:18:53.987: E/AndroidRuntime(15243): android.database.sqlite.SQLiteException: no such table: ID_DANGER_CLASSE_1: , while compiling: SELECT * FROM ID_DANGER_CLASSE_1 ;
04-02 19:18:53.987: E/AndroidRuntime(15243): at android.database.sqlite.SQLiteCompiledSql.native_compile(Native Method)
04-02 19:18:53.987: E/AndroidRuntime(15243): at android.database.sqlite.SQLiteCompiledSql.<init>(SQLiteCompiledSql.java:68)
04-02 19:18:53.987: E/AndroidRuntime(15243): at android.database.sqlite.SQLiteProgram.compileSql(SQLiteProgram.java:143)
04-02 19:18:53.987: E/AndroidRuntime(15243): at android.database.sqlite.SQLiteProgram.compileAndbindAllArgs(SQLiteProgram.java:361)
04-02 19:18:53.987: E/AndroidRuntime(15243): at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:127)
04-02 19:18:53.987: E/AndroidRuntime(15243): at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:94)
04-02 19:18:53.987: E/AndroidRuntime(15243): at android.database.sqlite.SQLiteQuery.<init>(SQLiteQuery.java:53)
04-02 19:18:53.987: E/AndroidRuntime(15243): at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:47)
04-02 19:18:53.987: E/AndroidRuntime(15243): at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1564)
04-02 19:18:53.987: E/AndroidRuntime(15243): at android.database.sqlite.SQLiteDatabase.rawQuery(SQLiteDatabase.java:1538)
04-02 19:18:53.987: E/AndroidRuntime(15243): at fr.app.tutorielfragment.A_Page_Classe1.RD_Database_InfoClasse(A_Page_Classe1.java:47)
04-02 19:18:53.987: E/AndroidRuntime(15243): at fr.app.tutorielfragment.A_Page_Classe1.onActivityCreated(A_Page_Classe1.java:32)
04-02 19:18:53.987: E/AndroidRuntime(15243): at android.support.v4.app.Fragment.performActivityCreated(Fragment.java:1468)
04-02 19:18:53.987: E/AndroidRuntime(15243): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:931)
04-02 19:18:53.987: E/AndroidRuntime(15243): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1088)
04-02 19:18:53.987: E/AndroidRuntime(15243): at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
04-02 19:18:53.987: E/AndroidRuntime(15243): at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1444)
04-02 19:18:53.987: E/AndroidRuntime(15243): at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:461)
04-02 19:18:53.987: E/AndroidRuntime(15243): at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:141)
04-02 19:18:53.987: E/AndroidRuntime(15243): at android.support.v4.view.ViewPager.populate(ViewPager.java:1012)
04-02 19:18:53.987: E/AndroidRuntime(15243): at android.support.v4.view.ViewPager.populate(ViewPager.java:881)
04-02 19:18:53.987: E/AndroidRuntime(15243): at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1366)
04-02 19:18:53.987: E/AndroidRuntime(15243): at android.view.View.measure(View.java:12728)
04-02 19:18:53.987: E/AndroidRuntime(15243): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4698)
04-02 19:18:53.987: E/AndroidRuntime(15243): at android.widget.FrameLayout.onMeasure(FrameLayout.java:293)
04-02 19:18:53.987: E/AndroidRuntime(15243): at android.view.View.measure(View.java:12728)
04-02 19:18:53.987: E/AndroidRuntime(15243): at android.widget.LinearLayout.measureVertical(LinearLayout.java:812)
04-02 19:18:53.987: E/AndroidRuntime(15243): at android.widget.LinearLayout.onMeasure(LinearLayout.java:553)
04-02 19:18:53.987: E/AndroidRuntime(15243): at android.view.View.measure(View.java:12728)
04-02 19:18:53.987: E/AndroidRuntime(15243): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4698)
04-02 19:18:53.987: E/AndroidRuntime(15243): at android.widget.FrameLayout.onMeasure(FrameLayout.java:293)
04-02 19:18:53.987: E/AndroidRuntime(15243): at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2118)
04-02 19:18:53.987: E/AndroidRuntime(15243): at android.view.View.measure(View.java:12728)
04-02 19:18:53.987: E/AndroidRuntime(15243): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1064)
04-02 19:18:53.987: E/AndroidRuntime(15243): at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2442)
04-02 19:18:53.987: E/AndroidRuntime(15243): at android.os.Handler.dispatchMessage(Handler.java:99)
04-02 19:18:53.987: E/AndroidRuntime(15243): at android.os.Looper.loop(Looper.java:137)
04-02 19:18:53.987: E/AndroidRuntime(15243): at android.app.ActivityThread.main(ActivityThread.java:4424)
04-02 19:18:53.987: E/AndroidRuntime(15243): at java.lang.reflect.Method.invokeNative(Native Method)
04-02 19:18:53.987: E/AndroidRuntime(15243): at java.lang.reflect.Method.invoke(Method.java:511)
04-02 19:18:53.987: E/AndroidRuntime(15243): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
04-02 19:18:53.987: E/AndroidRuntime(15243): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
04-02 19:18:53.987: E/AndroidRuntime(15243): at dalvik.system.NativeStart.main(Native Method)