Android：当我在 Sql server 中将状态更改为 false 时，如何从我的应用程序中自动注销？

Posted 2023-05-07

【中文标题】Android：当我在 Sql server 中将状态更改为 false 时，如何从我的应用程序中自动注销？

【英文标题】：Android : How can i Auto Log out from my app when i change my status to false in Sql server?

【发布时间】：2016-05-31 20:47:53

【问题描述】：

我在我的应用程序中使用了以下内容： 1] MainActivity [登录页面] 2] 欢迎[主页]

我使用了 .NET Web 服务并且 数据库：表名 tblLogin 字段是： id , 姓名 , 密码 , 状态

1] MainActivity.java

package com.example.yashdesai.myapplication;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import org.ksoap2.SoapEnvelope;
import org.ksoap2.SoapFault;
import org.ksoap2.serialization.SoapObject;
import org.ksoap2.serialization.SoapPrimitive;
import org.ksoap2.serialization.SoapSerializationEnvelope;
import org.ksoap2.transport.HttpTransportSE;
import org.xmlpull.v1.XmlPullParserException;
import java.io.IOException;
import java.util.HashMap;

public class MainActivity extends AppCompatActivity 

    final String NAMESPACE = "http://tempuri.org/";
    final String METHOD_NAME = "Login";
    final String SOAP_ACTION = "http://tempuri.org/Login";
    final String URL = "http://192.168.11.16/Lucky/WebService.asmx";

    EditText tv;
    EditText tv1;
    Button btn;
    TextView tv2;

    SessionManager session;

    @Override
    public void onBackPressed() 
        finish();
    

    @Override
    protected void onCreate(Bundle savedInstanceState) 
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        session = new SessionManager(getApplicationContext());

        tv = (EditText) findViewById(R.id.name);
        tv1 = (EditText) findViewById(R.id.password);
        tv2 = (TextView) findViewById(R.id.text);
        btn = (Button) findViewById(R.id.button);
      //  sharedpreferences = getSharedPreferences(MyPREFERENCES, Context.MODE_PRIVATE);

        Toast.makeText(getApplicationContext(), "User Login Status: " + session.isLoggedIn(), Toast.LENGTH_LONG).show();
        if(session.isLoggedIn()==true)
            HashMap<String, String> user = session.getUserDetails();
            String name = user.get(SessionManager.KEY_NAME);
            String password = user.get(SessionManager.KEY_PASSWORD);
            Intent i = new Intent(getApplicationContext(),welcome2.class);
            i.putExtra("name",name);
            startActivity(i);
        
      //  session.checkLogin();

        btn.setOnClickListener(new View.OnClickListener() 
            @Override
            public void onClick(View arg0) 
                new MyTask().execute();
            
        );
    




    public class MyTask extends AsyncTask<Void, Void, String> 

        String response = "";

        public void onPreExecute() 


                super.onPreExecute();

        



        @Override
        protected String doInBackground(Void... arg0) 
            final SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);

            request.addProperty("name", tv.getText().toString());
            request.addProperty("password", tv1.getText().toString());

            final SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
            envelope.setOutputSoapObject(request);
            envelope.dotNet = true;
            try 
                HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
                androidHttpTransport.call(SOAP_ACTION, envelope);
                SoapPrimitive result = (SoapPrimitive) envelope.getResponse();
                response = result.toString();
                Log.d("REsponse rsult:       ", response.toString());



             catch (SoapFault soapFault) 
                soapFault.printStackTrace();
             catch (IOException e) 

                response = "1";

             catch (XmlPullParserException e) 
                response = "2";
            

            return response;
        

        @Override
        public void onPostExecute(String res) 

            if(!(res.equalsIgnoreCase("")))
            
                tv2.setText(res);
                if(tv2.getText().toString().equalsIgnoreCase("not valid"))
                      Toast.makeText(getApplicationContext(), "Incorrect username or password!", 9000).show();
                
                else 

                        session.createLoginSession(tv.getText().toString(), tv1.getText().toString());

                        Intent i=new Intent(getApplicationContext(),welcome2.class);
                        i.putExtra("name",tv.getText().toString());
                        startActivity(i);
                

            

        

    

2] Welcome2.java

public class welcome2 extends AppCompatActivity 

    TextView t;
    String user_status="off";

    SessionManager session;

    @Override
    protected void onCreate(Bundle savedInstanceState) 
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_welcome2);

        session = new SessionManager(getApplicationContext());

        t=(TextView)findViewById(R.id.wname);

        Intent intent = getIntent();
        String value = intent.getStringExtra("name");
        t.setText("Welcome: " + value);
    

    public void logout(View view)

        session.logoutUser();
    

【参考方案1】：

  timer = new CountDownTimer(1 *10 * 1000, 1000) 
        public void onTick(long millisUntilFinished) 
            //Some code
           // timer.start();
            t.setText(Long.toString(millisUntilFinished/1000));

        

        public void onFinish() 
            if(tv.getText().toString().equalsIgnoreCase("not valid"))
                if(tv1.getText().toString().equalsIgnoreCase("not valid"))

                session.logoutUser();

            else
        

    .start();

希望它对你有用！

【参考方案2】：

  private final Runnable m_Runnable = new Runnable()
    
        public void run()

        
            Toast.makeText(welcome2.this,"in runnable", Toast.LENGTH_SHORT).show();
           // Toast.makeText(welcome2.this,"in runnable", Toast.LENGTH_SHORT).show();

                //session.logoutUser();

            //welcome2.this.mHandler.postDelayed(m_Runnable, 5000);
        

    ;