android sqlite数据库问题

[tianke0711]

求救！我想在android真机子上导入外部数据库（我放在assest下面的raw文件下）。代码如下：

public class DBManager {
private final int BUFFER_SIZE = 400000;
public static final String DB_NAME = "Test.db";
public static final String PACKAGE_NAME = "com.example.testdatabase";
public static final String DB_PATH = "/data"+ Environment.getDataDirectory().getAbsolutePath()
+ "/" + PACKAGE_NAME;
private SQLiteDatabase database;
private Context context;

DBManager(Context context) {
this.context = context;
}

public void openDatabase() {
this.database = this.openDatabase(DB_PATH + "/" + DB_NAME);
}

private SQLiteDatabase openDatabase(String dbfile) {
try {
if(!(new File(dbfile).exists())){
InputStream is = this.context.getResources().openRawResource(R.raw.test);
FileOutputStream fos = new FileOutputStream(dbfile);
byte[] buffer = new byte[BUFFER_SIZE];
int count = 0;
while ((count = is.read(buffer)) > 0) {
fos.write(buffer, 0, count);
}
fos.close();
is.close();
}

SQLiteDatabase db = SQLiteDatabase.openOrCreateDatabase(dbfile, null);
return db;
} catch(FileNotFoundException e) {
Log.e("Database", "File not found");
e.printStackTrace();
} catch (IOException e) {
Log.e("Database", "IO exception");
e.printStackTrace();
}
return null;
//http://jalhaskazakhlike.lofter.com/post/3f320a_15df9b3
//http://www.cnblogs.com/xiaowenji/archive/2011/01/03/1925014.html

}
public void closeDatabase() {
this.database.close();
}

}


import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;

public class MainActivity extends Activity {
public DBManager dbHelper;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
dbHelper = new DBManager(this);
dbHelper.openDatabase();
dbHelper.closeDatabase();
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}

}

然后我在DDMS模式情况下，查看data文件，我发现没有找到我创建的数据库。表示创建失败了。网上说可能root问题。麻烦大家手把手指点一下，怎么解决?

[糖果猪猪]

有时候eclipse上是看不到的，你可以先把手机root，然后下载R.E管理器，在手机上通过RE管理器查看数据库有没有创建成功

[shanluan_]

权限不够。。

[xiaocos]

manifest里面sd卡的读写权限给了吗？

[tianke0711]

manifest里面sd卡的读写权限给读写权限都给了啊！我的手机是三星galaxy 3s。悲剧的是我手机我不能root，我用了好多方法。有谁会搞定这个root啊