【发布时间】：2011-10-07 14:41:07
【问题描述】：
好的，现在我真的被困在这里了。我不知道该做什么，去哪里或任何事情！
我一直在尝试卸载、重新安装 SDK 和 Eclipse 版本，尝试用谷歌搜索出来，但是 nu-uh... 没有！！！
我可以在模拟器中运行我的应用程序，但我无法导出它...
[2011-10-07 16:35:30 - Dex Loader] 无法执行 dex：多个 dex 文件定义 Lcom/dreamhawk/kalori/DataBaseHelper；
这是dataBaseHelper
package com.dreamhawk.kalori;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import android.content.Context;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteException;
import android.database.sqlite.SQLiteOpenHelper;
import android.util.Log;
import android.widget.Toast;
public class DataBaseHelper extends SQLiteOpenHelper {
// The Android's default system path of your application database.
private static String DB_PATH = "/data/data/com.dreamhawk.kalori/databases/";
private static String DB_NAME = "livsmedel_db";
private DataBaseHelper myDBHelper;
private SQLiteDatabase myDb;
private final Context myContext;
private static final String DATABASE_TABLE = "Livsmedel";
public static String DB_FILEPATH = "/data/data/com.dreamhawk.kalori/databases/lifemedel_db";
public static final String KEY_TITLE = "Namn";
public static final String KEY_BODY = "Kcal";
public static final String KEY_ROWID = "_id";
private static final int DATABASE_VERSION = 2;
/**
* Constructor Takes and keeps a reference of the passed context in order to
* access to the application assets and resources.
*
* @param context
*/
public DataBaseHelper(Context context) {
super(context, DB_NAME, null, 1);
this.myContext = context;
// checking database and open it if exists
if (checkDataBase()) {
openDataBase();
} else {
try {
this.getReadableDatabase();
createDatabase();
this.close();
openDataBase();
} catch (IOException e) {
throw new Error("Error copying database");
}
Toast.makeText(context, "Livsmedelsdatabasen importerad",
Toast.LENGTH_LONG).show();
}
}
private boolean checkDataBase() {
SQLiteDatabase checkDB = null;
boolean exist = false;
try {
String dbPath = DB_PATH + DB_NAME;
checkDB = SQLiteDatabase.openDatabase(dbPath, null,
SQLiteDatabase.OPEN_READONLY);
} catch (SQLiteException e) {
Log.v("db log", "database does't exist");
}
if (checkDB != null) {
exist = true;
checkDB.close();
}
return exist;
}
@Override
public void onCreate(SQLiteDatabase db) {
// db.execSQL(DATABASE_CREATE);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
Log.w("Kalori", "Upgrading database from version " + oldVersion + " to "
+ newVersion + ", which will destroy all old data");
db.execSQL("DROP TABLE IF EXISTS Livsmedel");
onCreate(db);
}
public DataBaseHelper open() throws SQLException {
myDBHelper = new DataBaseHelper(myContext);
myDb = myDBHelper.getWritableDatabase();
return this;
}
public void createDatabase() throws IOException {
InputStream assetsDB = myContext.getAssets().open("livsmedel_db");
// OutputStream dbOut = new FileOutputStream(DB_PATH);
String outFileName = DB_PATH + DB_NAME;
OutputStream dbOut = new FileOutputStream(outFileName);
Log.d("DH", "index=" + assetsDB);
byte[] buffer = new byte[1024];
int length;
while ((length = assetsDB.read(buffer)) > 0) {
dbOut.write(buffer, 0, length);
}
dbOut.flush();
dbOut.close();
assetsDB.close();
}
public Cursor fetchAllNotes() {
return myDb.query(DATABASE_TABLE, new String[] { KEY_ROWID, KEY_TITLE,
KEY_BODY }, null, null, null, null, null);
}
public void openDataBase() throws SQLException {
String dbPath = DB_PATH + DB_NAME;
myDb = SQLiteDatabase.openDatabase(dbPath, null,
SQLiteDatabase.OPEN_READWRITE);
}
}
我怀疑：
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
但我不知道该怎么办...请帮助！ :'(
【问题讨论】：
-
你有没有试过直接用ant构建它，而不是通过eclipse？如果是这样，您可以发布完整的构建日志吗？另外，您是否在项目中包含任何库项目或 jar 文件？
-
不，我没有。不，我没有其他库项目或 .jar，我只使用 Android 2.3.3，并且我在 assets 文件夹中有一个存储的数据库。这以前一直有效，但自从更新 ADT 和 Eclipse 后，这已经失败了。我还没有尝试过 Ant，我现在没有时间去做：/
-
@user889771 同样，我更新了 adt，问题开始发生
-
在以下链接中查看我的答案。 stackoverflow.com/a/38391449/3702595