0
我想用「openOrCreateDatabase」創建一個SQLLite數據庫。問題是,我在創建新表時遇到錯誤。Android APP數據庫連接
11-11 12:36:39.865: E/AndroidRuntime(1520): java.lang.IllegalStateException:
database not open
這是我的代碼:
public class MainActivity extends Activity {
EditText playerName;
Button submitPlayer;
SQLiteDatabase myDB = null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_main);
playerName = (EditText)findViewById(R.id.playerName);
submitPlayer = (Button)findViewById(R.id.submitPlayer);
myDB = SQLiteDatabase.openOrCreateDatabase("/data/data/com.my.appname/mydb.db",null);
try{
myDB.execSQL("CREATE TABLE IF NOT EXISTS player (playername VARCHAR)");
myDB.execSQL("INSERT INTO player VALUES('test')");
... ..
我加入2-線路中的清單:
<權限組機器人:名稱= 「android.permission-group.STORAGE」 >
< uses-permission android:name =「android.permission.WRITE_EXTERNAL_STORAGE」/>
怎麼了?
非常感謝!
非常感謝!我會嘗試這個教程。 :) – user1682793