Ich möchte eine remember me Funktionalität in meinem Android-Code implementieren, aber ich bin mir nicht sicher, wo ich anfangen soll

Question

Ich möchte eine remember me Funktionalität in meinem Android-Code implementieren, aber ich bin nicht sicher, wo ich anfangen soll, weil mein Code Art ist Komplex. Ich bin mir nicht sicher, wo man die Dinge setzen soll, bitte helfen Sie mir.

Ich möchte Telefon-Nr und Passwort merken nur wenn Login ist wahr, also bitte helfen Sie mir. Dies ist mein Codes und bitte sagen Sie mir, wo Sie Ihre Vorschläge in meinem Code setzen wird es besser sein, wenn Sie es Ihnen bearbeiten dankt

dieses Login-Code:

import android.app.Activity; 
import android.app.AlertDialog; 
import android.content.DialogInterface; 
import android.content.Intent; 
import android.content.SharedPreferences; 

import android.net.Uri; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.View; 
import android.view.Window; 
import android.widget.Button; 
import android.widget.CheckBox; 
import android.widget.EditText; 
import android.widget.TextView; 



import static example.R.layout.login; 

public class login extends Activity { 

TextView signup_text; 
Button login_button; 
EditText PHONE_NO, PASSWORD; 
AlertDialog.Builder builder; 


@Override 

protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    requestWindowFeature(Window.FEATURE_NO_TITLE); 
    setContentView(R.layout.login); 
    signup_text = (TextView) findViewById(R.id.sign_up); 
    signup_text.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View v) { 
      startActivity(new Intent(login.this, register.class)); 
     } 
    }); 
    PHONE_NO = (EditText) findViewById(R.id.phone_no); 
    PASSWORD = (EditText) findViewById(R.id.password); 
    login_button = (Button) findViewById(R.id.login_button); 


    login_button.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      String phone_no = PHONE_NO.getText().toString(); 
      String password = PASSWORD.getText().toString(); 


      if (phone_no.equals("") || password.equals("")) { 

       builder = new AlertDialog.Builder(login.this); 
       builder.setTitle("Something went wrong..."); 
       builder.setMessage("Please fill all the fields..."); 
       builder.setPositiveButton("OK", new DialogInterface.OnClickListener() { 
        @Override 
        public void onClick(DialogInterface dialog, int which) { 
         dialog.dismiss(); 


        } 
       }); 
       AlertDialog alertDialog = builder.create(); 
       alertDialog.show(); 
      } else { 

       BackgroundTask backgroundTask = new BackgroundTask(login.this); 
       backgroundTask.execute("login", phone_no, password); 

      } 


     } 
    }); 


} 
} 

und das ist backgroundtask.java:

import android.app.Activity; 
import android.app.AlertDialog; 
import android.app.ProgressDialog; 
import android.content.Context; 
import android.content.DialogInterface; 
import android.content.Intent; 
import android.content.SharedPreferences; 
import android.os.AsyncTask; 

import android.widget.CheckBox; 
    import android.widget.EditText; 


import org.json.JSONArray; 
import org.json.JSONException; 
    import org.json.JSONObject; 
    import com.google.gson.*; 


import android.content.SharedPreferences; 
import java.io.BufferedReader; 
import java.io.BufferedWriter; 
import java.io.IOException; 
import java.io.InputStream; 
    import java.io.InputStreamReader; 
    import java.io.OutputStream; 
    import java.io.OutputStreamWriter; 
import java.io.UnsupportedEncodingException; 
    import java.net.HttpURLConnection; 
import java.net.MalformedURLException; 
import java.net.ProtocolException; 
    import java.net.URL; 
    import java.net.URLEncoder; 



public class BackgroundTask extends AsyncTask<String,Void,String> { 
String register_url = "http://10.0.0.4/loginapp/register.php"; 
String login_url = "http://10.0.0.4/loginapp/login.php"; 



Context ctx; 

ProgressDialog progressDialog; 
Activity activity; 
AlertDialog.Builder builder; 


public BackgroundTask(Context ctx) { 

    this.ctx = ctx; 
    activity = (Activity) ctx; 
} 

@Override 
protected void onPreExecute() { 
    super.onPreExecute(); 
    builder = new AlertDialog.Builder(activity); 
    progressDialog = new ProgressDialog(ctx); 
    progressDialog.setTitle("Please Wait"); 
    progressDialog.setMessage("Connecting to server .... "); 
    progressDialog.setIndeterminate(true); 
    progressDialog.setCancelable(false); 
    progressDialog.show(); 
} 


@Override 
protected String doInBackground(String... params) { 

    String method = params[0]; 
    if (method.equals("register")) { 

     try { 
      URL url = new URL(register_url); 
      HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection(); 
      httpURLConnection.setRequestMethod("POST"); 
      httpURLConnection.setDoOutput(true); 
      httpURLConnection.setDoInput(true); 
      OutputStream outputStream = httpURLConnection.getOutputStream(); 
      BufferedWriter bufferedWriter = new BufferedWriter(new OutputStreamWriter(outputStream, "UTF-8")); 
      String owner_name = params[1]; 
      String shop_name = params[2]; 
      String phone_no = params[3]; 
      String shop_address = params[4]; 
      String opening_time = params[5]; 
      String closing_time = params[6]; 
      String password = params[7]; 
      String data = URLEncoder.encode("owner_name", "UTF-8") + "=" + URLEncoder.encode(owner_name, "UTF-8") + "&" + 
        URLEncoder.encode("shop_name", "UTF-8") + "=" + URLEncoder.encode(shop_name, "UTF-8") + "&" + 
        URLEncoder.encode("phone_no", "UTF-8") + "=" + URLEncoder.encode(phone_no, "UTF-8") + "&" + 
        URLEncoder.encode("shop_address", "UTF-8") + "=" + URLEncoder.encode(shop_address, "UTF-8") + "&" + 
        URLEncoder.encode("opening_time", "UTF-8") + "=" + URLEncoder.encode(opening_time, "UTF-8") + "&" + 
        URLEncoder.encode("closing_time", "UTF-8") + "=" + URLEncoder.encode(closing_time, "UTF-8") + "&" + 
        URLEncoder.encode("password", "UTF-8") + "=" + URLEncoder.encode(password, "UTF-8"); 
      bufferedWriter.write(data); 
      bufferedWriter.flush(); 
      bufferedWriter.close(); 
      outputStream.close(); 
      InputStream inputStream = httpURLConnection.getInputStream(); 
      BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream)); 
      StringBuilder stringBuilder = new StringBuilder(); 
      String line = ""; 
      while ((line = bufferedReader.readLine()) != null) { 


       stringBuilder.append(line + "\n"); 

      } 
      httpURLConnection.disconnect(); 

      Thread.sleep(5000); 
      return stringBuilder.toString().trim(); 

     } catch (MalformedURLException e) { 
      e.printStackTrace(); 
     } catch (IOException e) { 
      e.printStackTrace(); 
     } catch (InterruptedException e) { 
      e.printStackTrace(); 
     } 


    } else if (method.equals("login")) { 
     try { 
      URL url = new URL(login_url); 

      HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection(); 
      httpURLConnection.setRequestMethod("POST"); 
      httpURLConnection.setDoOutput(true); 
      httpURLConnection.setDoInput(true); 
      OutputStream outputStream = httpURLConnection.getOutputStream(); 
      BufferedWriter bufferedWriter = new BufferedWriter(new OutputStreamWriter(outputStream, "UTF-8")); 
      String phone_no, password; 
      phone_no = params[1]; 
      password = params[2]; 
      String data = URLEncoder.encode("phone_no", "UTF-8") + "=" + URLEncoder.encode(phone_no, "UTF-8") + "&" + 
        URLEncoder.encode("password", "UTF-8") + "=" + URLEncoder.encode(password, "UTF-8"); 
      bufferedWriter.write(data); 
      bufferedWriter.flush(); 
      bufferedWriter.close(); 
      outputStream.close(); 

      InputStream inputStream = httpURLConnection.getInputStream(); 
      BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream)); 
      StringBuilder stringBuilder = new StringBuilder(); 
      String line = ""; 
      while ((line = bufferedReader.readLine()) != null) { 


       stringBuilder.append(line + "\n"); 

      } 
      httpURLConnection.disconnect(); 

      Thread.sleep(5000); 
      return stringBuilder.toString().trim(); 

     } catch (MalformedURLException e) { 
      e.printStackTrace(); 
     } catch (UnsupportedEncodingException e) { 
      e.printStackTrace(); 
     } catch (ProtocolException e) { 
      e.printStackTrace(); 
     } catch (IOException e) { 
      e.printStackTrace(); 
     } catch (InterruptedException e) { 
      e.printStackTrace(); 
     } 

    } 
    return null; 
} 


@Override 
protected void onProgressUpdate(Void... values) { 
    super.onProgressUpdate(values); 
} 

@Override 
protected void onPostExecute(String json) { 

    progressDialog.dismiss(); 
    try { 


     JSONObject jsonObject = new JSONObject(json); 
     JSONArray jsonarry = jsonObject.getJSONArray("server_response"); 
     JSONObject JO = jsonarry.getJSONObject(0); 
     String code = JO.getString("code"); 
     String message = JO.getString("message"); 

     if (code.equals("reg_true")) { 

      showDialog("Registration Success", code, message); 

     } else if (code.equals("reg_false")) { 


      showDialog("Registration Failed", code, message); 

     } else if (code.equals("login_true")) { 


      Intent intent = new Intent(activity, HomeActivity.class); 
      intent.putExtra("message", message); 
      activity.startActivity(intent); 
     } else if (code.equals("login_false")) { 
      showDialog("Login Error", code, message); 
     } 


    } catch (JSONException e) { 
     e.printStackTrace(); 
    } 
} 

public void showDialog(String title, String code, String message) { 

    builder.setTitle(title); 
    if (code.equals("reg_true") || code.equals("reg_false")) { 

     builder.setMessage(message); 
     builder.setPositiveButton("OK", new DialogInterface.OnClickListener() { 
      @Override 
      public void onClick(DialogInterface dialog, int which) { 
       dialog.dismiss(); 
       activity.finish(); 
      } 

     }); 


    } else if (code.equals("login_false")) { 

     builder.setMessage(message); 
     builder.setPositiveButton("OK", new DialogInterface.OnClickListener() { 
      @Override 
      public void onClick(DialogInterface dialog, int which) { 
       EditText phone_no, password; 
       phone_no = (EditText) activity.findViewById(R.id.phone_no); 
       password = (EditText) activity.findViewById(R.id.password); 
       phone_no.setText(""); 
       password.setText(""); 
       dialog.dismiss(); 
      } 
     }); 


    } 
    AlertDialog alertDialog = builder.create(); 
    alertDialog.show(); 


} 



} 

bitte helfen Danke

Answer 1

1. Nach dem Einschalten Login klicken/SignIn, überprüfen Sie einfach Wenn Sie mich erinnern CheckBox ist aktiviert oder nicht, wenn es aktiviert ist, speichern Sie Benutzername/E-Mail und Passwort in SharedPreferences.

2. In Ihrem onCreate() von LoginActivity prüfen, ob Sie eine Benutzername/E-Mail oder Passwort in SharedPreferences gespeichert haben, wenn sie dort Ihre EditText mit denen Benutzer Name/Email und Passwort ist zu füllen.

Answer 2

public class Log_in extends AppCompatActivity { 
    public static String PREFS_NAME="NAME"; 
    public static String PREF_USERNAME=""; 
    public static String PREF_PASSWORD=""; 


    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_log_in); 
     EditText txtuser=(EditText)findViewById(R.id.txt_user); 
     EditText txtpwd=(EditText)findViewById(R.id.txt_pwd); 
     CheckBox ch=(CheckBox)findViewById(R.id.ch_rememberme); 

     SharedPreferences pref = getSharedPreferences(PREFS_NAME,MODE_PRIVATE); 
     String username = pref.getString(PREF_USERNAME, null); 
     String password = pref.getString(PREF_PASSWORD, null); 

     if (username != null || password != null) { 
      txtuser.setText(username); 
      txtpwd.setText(password); 
      ch.setChecked(true); 
     } 
     else { 
      ch.setChecked(false); 
     } 
    } 
    public void doLogin(View view){ 
     EditText txtuser=(EditText)findViewById(R.id.txt_user); 
     EditText txtpwd=(EditText)findViewById(R.id.txt_pwd); 
     String username = txtuser.getText().toString(); 
     String password = txtpwd.getText().toString(); 
     CheckBox ch=(CheckBox)findViewById(R.id.ch_rememberme); 
     String type = "login"; 
     if(ch.isChecked()){ 
      rememberMe(username,password); 
     } 
     else{ 
      clear(); 
     } 
     BackgroundTask bt = new BackgroundTask(this); 
     bt.execute(type, username, password); 
    } 
    public void rememberMe(String user, String password){ 
     getSharedPreferences(PREFS_NAME,MODE_PRIVATE) 
       .edit() 
       .putString(PREF_USERNAME,user) 
       .putString(PREF_PASSWORD,password) 
       .commit(); 
    } 
    public void clear(){ 
     SharedPreferences sharedPrefs =getSharedPreferences(Log_in.PREFS_NAME,MODE_PRIVATE); 
     SharedPreferences.Editor editor = sharedPrefs.edit(); 
     editor.clear(); 
     editor.commit(); 
    } 

}