Android实现记住密码功能

package com.wangdeqiang.www.chatwithrobot.BroadcastBestPractice;

import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.Toast;

import com.wangdeqiang.www.chatwithrobot.R;

import static com.wangdeqiang.www.chatwithrobot.R.id.account;

/**
 * @author
 */

public class LoginActivity extends BaseActivity {
  private SharedPreferences pref;

  private SharedPreferences.Editor editor;

  private EditText accountEdit;

  private EditText passwordEdit;

  private Button login;

  private CheckBox rememberPass;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_login);
    pref = PreferenceManager.getDefaultSharedPreferences(this);
    accountEdit = (EditText) findViewById(account);
    passwordEdit = (EditText) findViewById(R.id.password);
    rememberPass = (CheckBox) findViewById(R.id.remember_pass);
    login = (Button) findViewById(R.id.login);
    boolean isRemeber = pref.getBoolean("remember_password",false);
    if(isRemeber) {
      //将账号和密码都设置到文本框中
      String account = pref.getString("account","");
      String password = pref.getString("password","");
      accountEdit.setText(account);
      passwordEdit.setText(password);
      rememberPass.setChecked(true);
    }
    login.setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View v) {
        String account = pref.getString("account", "").toString();
        String password = pref.getString("password", "").toString();
        //如果账号和密码是admin和123456,就认为登陆成功
        if (account.equals("admin") && password.equals("123456")) {
          editor = pref.edit();
          if (rememberPass.isChecked()) {
            editor.putBoolean("remember", false);
            editor.putString("account", account);
            editor.putString("password", password);
          } else {
            editor.apply();
          }
          editor.commit();
          Intent intent = new Intent(LoginActivity.this, Main3Activity.class);
          startActivity(intent);
          finish();
        } else {
          Toast.makeText(LoginActivity.this, "密码或者账号错误", Toast.LENGTH_SHORT).show();
        }
      }
    });




    }
   }

<?xml version="1.0" encoding="utf-8"? 

<TableLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:stretchColumns="1"
   
  <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical" 

    <LinearLayout
      android:layout_width="match_parent"
      android:layout_height="60dp"
      android:orientation="horizontal" 

      <TextView
        android:layout_width="90dp"
        android:layout_height="wrap_content"
        android:layout_gravity="center_vertical"
        android:text="Account:"
        android:textSize="18sp" / 

      <EditText
        android:id="@+id/account"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_gravity="center_vertical"
        android:layout_weight="1" / 
    </LinearLayout 

    <LinearLayout
      android:layout_width="match_parent"
      android:layout_height="60dp"
      android:orientation="horizontal" 

      <TextView
        android:layout_width="90dp"
        android:layout_height="wrap_content"
        android:layout_gravity="center_vertical"
        android:text="Password"
        android:textSize="18sp" / 

      <EditText
        android:id="@+id/password"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_gravity="center_vertical"
        android:layout_weight="1"
        android:inputType="textPassword" / 
    </LinearLayout 
  </LinearLayout 
  <TableRow 
    <CheckBox
      android:id="@+id/remember_pass"
      android:layout_height="wrap_content"
      / 
    <TextView
      android:layout_height="wrap_content"
      android:text="Remeber password"
      / 
  </TableRow 
  <Button
    android:id="@+id/login"
    android:layout_height="wrap_content"
    android:layout_span="2"
    android:text="Login"
    / 
</TableLayout