这是我的连接android app到pc服务器中包含的外部数据库的代码!!我的应用程序在日食的模拟器中工作得非常好，但是当我在我的三星Galaxy s2中使用该应用程序时无效！当我尝试在EditText中写入时，logCat说：
05-08 21:54:25.800: W/IInputConnectionWrapper(876): getSelectedText on inactive InputConnection
05-08 21:54:25.805: W/IInputConnectionWrapper(876): setComposingText on inactive InputConnection
05-08 21:54:25.805: W/IInputConnectionWrapper(876): getExtractedText on inactive InputConnection
公共类MainActivity扩展了Activity {
EditText username1;
EditText password1;
TextView status;
ResultSet rs;
//private static final String url = "jdbc:mysql://10.0.2.2:3306/tesina";
private static final String url = "jdbc:mysql://192.168.1.10:3306/tesina";
private static final String user = "root";
private static final String pass = "";
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
username1 = (EditText) findViewById(R.id.user);
password1 = (EditText) findViewById(R.id.pass);
//status =(TextView) findViewById(R.id.login_error);
Button btnLogin=(Button) findViewById(R.id.btnlogin);
btnLogin.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
new Connessione().execute();
}
});
}
private class Connessione extends AsyncTask<String, String, Void> {
@Override
protected Void doInBackground(String... String) {
String us = username1.getText().toString();
try {
Class.forName("com.mysql.jdbc.Driver");
Connection con = DriverManager.getConnection(url, user, pass);
Statement stmt = con.createStatement();
rs = (ResultSet) stmt.executeQuery("SELECT * FROM prova WHERE nome='"+us+"'");
}
catch(Exception e) {
e.printStackTrace();
}
return null;
}
protected void onProgressUpdate(String... values) {
}
protected void onPostExecute(String result) {
String p = password1.getText().toString();
try {
if(rs.next())
{
String dbpass = rs.getString(2);
if(dbpass.equals(p))
{
Intent i = new Intent(MainActivity.this,classi.class);
i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(i);
finish();
}
else
{
Toast.makeText(getBaseContext(), "errore: password non inserita correttamente", Toast.LENGTH_LONG).show();
}
}
else
{
Toast.makeText(getBaseContext(), "errore:username non trovato", Toast.LENGTH_LONG).show();
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
Toast.makeText(getBaseContext(), "applicazione non collegata al database della scuola", Toast.LENGTH_LONG).show();
}
}
}
}
`