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LoginActivity代码如下：

package cn.edu.bzu.a01;

import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.Toast;

public class LoginActivity extends AppCompatActivity {
    private EditText etName;
    private EditText etPassword;
    private CheckBox cbIsRememberPass;
    private SharedPreferences sharedPreferences;

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

        initView();
        sharedPreferences=getSharedPreferences("data", Context.MODE_PRIVATE);
        boolean isRemember=sharedPreferences.getBoolean("rememberpassword",false);
        if (isRemember){
            String name=sharedPreferences.getString("name","");
            String password=sharedPreferences.getString("password","");
            etName.setText(name);
            etPassword.setText(password);
            cbIsRememberPass.setChecked(true);
        }

    }

    private void initView() {
        etName= (EditText) findViewById(R.id.etName);
        etPassword= (EditText) findViewById(R.id.etPassword);
        cbIsRememberPass= (CheckBox) findViewById(R.id.cbIsRememberPass);

    }

    public void login(View view){
        String name=etName.getText().toString();
        String password=etPassword.getText().toString();
        if("admin".equals(name)&&"123456".equals(password)){
            SharedPreferences.Editor editor=sharedPreferences.edit();
            if(cbIsRememberPass.isChecked()){
                editor.putBoolean("rememberpassword",true);
                editor.putString("name",name);
                editor.putString("password",password);

            }else{
                editor.clear();
            }
               editor.commit();
            Intent intent=new Intent(this,MainActivity.class);
            startActivity(intent);
            finish();

        }else{
            Toast.makeText(this, "账号或密码错误", Toast.LENGTH_SHORT).show();
        }

    }
}

MainActivity中代码如下：

package cn.edu.bzu.a01;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

public class MainActivity extends AppCompatActivity {

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

layout中activity_login.xml代码：

<?xml version="1.0" encoding=