android无法打开本地数据库

//查询信息**************************************************************
        Button checkInfo = (Button)this.findViewById(R.id.button3);
        checkInfo.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                String dbPath = Environment.getExternalStorageDirectory() + "/meninfo.db";
                File dbFile = new File(dbPath);
                if (!dbFile.exists()) {
                    DisplayToast("请先拷贝数据库！");
                    return;
                }

                SQLiteDatabase db = SQLiteDatabase.openDatabase(dbPath, null, SQLiteDatabase.OPEN_READWRITE);

                Cursor c = db.rawQuery("select * from meminfo where cardNO = 123", null);
                String name = c.getString(c.getColumnIndex("name"));
                ImageView photo = (ImageView)findViewById(R.id.imageView1);
                String photoPath =String.format("/picSrc/s%.bmp",name);
                Bitmap bitmap = getLoacalBitmap(photoPath);
                photo.setImageBitmap(bitmap);
            }
        });

    }

代码如上，数据库是事先建好并拷贝到手机SD卡中的，打开本地数据库时总是出现上图所示问题，还请各位前辈不吝赐教！谢谢！