在我的 Android 应用程序中，资产文件夹中有一个预定义的数据库。
我创建了一个表android_metadata，其中有一列名为locale和一条记录en_US。
在我的应用程序中，用户应该输入他/她的详细信息并单击保存按钮。
单击保存按钮时，出现以下错误；
10-21 09:37:06.010：E/SQLiteLog(6278)：(11) [00bb9c9ce4] 的第 50741 行数据库损坏 10-21 09:37:06.010：E/SQLiteLog(6278)：(11) 数据库损坏[00bb9c9ce4] 10-21 09:37:06.010 的第 50780 行：E/SQLiteLog(6278)：(11) 语句在 16 处中止：[SELECT locale FROM android_metadata UNION SELECT NULL ORDER BY locale DESC LIMIT 1] 10-21 09： 37:06.160：E/SQLiteDatabase(6278)：无法打开数据库“/data/data/my.easymedi.controller/databases/EasyMediInfo.db”。10-21 09:37:06.160: E/SQLiteDatabase(6278): android.database.sqlite.SQLiteException: 无法将 db '/data/data/my.easymedi.controller/databases /EasyMediInfo.db' 的区域设置更改为 ' en_US'。10-21 09:37:06.160: E/SQLiteDatabase(6278): 在 android.database.sqlite.SQLiteConnection.setLocaleFromConfiguration(SQLiteConnection.java:
我的 DBHelper 课程如下；
package my.easymedi.db;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import my.easymedi.entity.Person;
import android.content.ContentValues;
import android.content.Context;
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 DBHelper extends SQLiteOpenHelper {
private static final String pkg = "my.easymedi.controller";
private static String DB_PATH = "";
private static String DB_NAME = "EasyMediInfo.db";
private static final int DB_VERSION = 1;
private final Context myContext;
private SQLiteDatabase myDatabase;
public DBHelper(Context context) {
super(context, DB_NAME, null, DB_VERSION);
// this.myContext = context;
if (android.os.Build.VERSION.SDK_INT >= 4.2) {
DB_PATH = context.getApplicationInfo().dataDir + "/databases/";
} else {
DB_PATH = "/data/data/" + context.getPackageName() + "/databases/";
}
this.myContext = context;
}
public void createDataBase() {
boolean dbExist = checkDataBase();
System.out.println("===" + dbExist + "===");
if (dbExist) {
// do nothing - database already exist
} else {
this.getReadableDatabase();
this.close();
try {
copyDataBase();
Log.d("CREATE_DB", "createDatabase database created");
} catch (IOException e) {
Toast.makeText(myContext, e.getMessage(), Toast.LENGTH_SHORT)
.show();
Log.d("CREATE_DB", e.getMessage());
}
}
}
private void copyDataBase() throws IOException {
System.out.println("***copy db***");
InputStream databaseInput = null;
/* Path to copy the database */
String outFileName = DB_PATH + DB_NAME;
/* open the empty database as an output stream */
OutputStream databaseOutput = new FileOutputStream(outFileName);
/* open the local database as the input stream */
databaseInput = myContext.getAssets().open(DB_NAME);
/* Transfer byte from byte from input file to output file */
byte[] buffer = new byte[1024];
int length = databaseInput.read(buffer);
while (length > 0) {
databaseOutput.write(buffer, 0, length);
//databaseOutput.flush();
}
databaseOutput.flush();
databaseInput.close();
databaseOutput.close();
}
private boolean checkDataBase() {
File dbFile = new File(DB_PATH + DB_NAME);
return dbFile.exists();
/*SQLiteDatabase checkDB = null;
try {
String myPath = DB_PATH + DB_NAME;
checkDB = SQLiteDatabase.openDatabase(myPath, null,
SQLiteDatabase.NO_LOCALIZED_COLLATORS);
} catch (SQLiteException e) {
Toast.makeText(myContext, e.getMessage(), Toast.LENGTH_SHORT)
.show();
Log.d("Check_DB", e.getMessage());
}
if (checkDB != null) {
String str = "checked";
System.out.println("====" + str + "====");
checkDB.close();
}
return checkDB != null ? true : false;*/
}
/* Open the database */
public boolean openDataBase() {
String myPath = DB_PATH + DB_NAME;
Toast.makeText(myContext, myPath, Toast.LENGTH_SHORT).show();
myDatabase = SQLiteDatabase.openDatabase(myPath, null,
SQLiteDatabase.OPEN_READWRITE);
if (myDatabase != null) {
System.out.println("====database opened====");
} else {
System.out.println("====error opening database====");
}
return myDatabase != null ? true : false;
}
public void closeDatabase() {
if (myDatabase != null) {
myDatabase.close();
}
}
@Override
public void onCreate(SQLiteDatabase db) {
// TODO Auto-generated method stub
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// TODO Auto-generated method stub
}
public boolean insertIntoDatabase(String table, ContentValues values) {
try {
myDatabase.insert(table, null, values);
Log.d("INSERT", "Information Saved");
return true;
} catch (Exception e) {
// TODO Auto-generated catch block
Log.d("INSERT", e.toString());
return false;
}
}
}
这是我保存按钮的代码段；
case R.id.btnSave: personName = etName.getText().toString();
date_of_birth = tvDOB.getText().toString();
age = tvAge.getText().toString();
int selected_rb_ID = genderGrp.getCheckedRadioButtonId();
RadioButton rb = (RadioButton) findViewById(selected_rb_ID);
gender = rb.getText().toString();
bloodGrp = spiBloodGrp.getSelectedItem().toString();
Person person = new Person();
person.setName(personName);
person.setDate_of_birth(date_of_birth);
person.setAge(age);
person.setGender(gender);
person.setBloodGrp(bloodGrp);
ContentValues values = new ContentValues();
values.put(COLUMN_PERSON_NAME, person.getName());
values.put(COLUMN_DOB, person.getDate_of_birth());
values.put(COLUMN_AGE, person.getAge());
values.put(COLUMN_GENDER, person.getGender());
values.put(COLUMN_BLOODGRP, person.getBloodGrp());
DBHelper dbHelper = new DBHelper(this);
dbHelper.createDataBase();
dbHelper.openDataBase();
if (dbHelper.insertIntoDatabase("EMPerson", values)) {
Toast.makeText(
getApplicationContext(),
"Data has been saved successfully",
Toast.LENGTH_SHORT
).show();
} else {
Toast.makeText(
getApplicationContext(),
"Oops ! Try again",
Toast.LENGTH_SHORT
).show();
}
dbHelper.closeDatabase();
break;
在我的主要活动中，我通过调用此代码段创建了数据库。
final DBHelper helper = new DBHelper(this);
helper.createDataBase();
这个错误是什么意思，我该如何解决？