Android实现自动登录和记住密码

效果图:

在勾选自动登录后下次打开软件会直接跳过登录界面

代码:

 protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_go);//即activity_login.xml
        findViews();
        if(sp.getBoolean("ISCHECK", false))
        {
            //设置默认是记录密码状态
            rem_pw.setChecked(true);
            etusername.setText(sp.getString("USER_NAME", ""));

            //判断自动登陆多选框状态
            if(sp.getBoolean("AUTO_ISCHECK", false))
            {
                //设置默认是自动登录状态
                auto_login.setChecked(true);
                //跳转界面
                Intent intent = new Intent(GoActivity.this,IndexActivity.class);
                GoActivity.this.startActivity(intent);

            }
        }
        login.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String username = etusername.getText().toString();
                System.out.println(username);
                Log.i("TAG",username);
                UserService uService=new UserService(GoActivity.this);
                boolean flag=uService.login(username);

                if(flag){
                    Log.i("TAG","登录成功");
                    Toast.makeText(GoActivity.this, "登录成功", Toast.LENGTH_LONG).show();
                    if(rem_pw.isChecked())
                    {
                        //记住用户名、密码、
                        SharedPreferences.Editor editor = sp.edit();
                        editor.putString("USER_NAME", username);
                        editor.commit();
                    }
                    Intent intent = new Intent(GoActivity.this,ListActivity.class);//页面跳转
                    startActivity(intent);
                }else{
                    Log.i("TAG","登录失败");
                    Toast.makeText(GoActivity.this, "登录失败", Toast.LENGTH_LONG).show();
                }

            }
        });
        register.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {

                Intent intent=new Intent(GoActivity.this,RegisterActivity.class);
                startActivity(intent);

            }
        });
        rem_pw.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            public void onCheckedChanged(CompoundButton buttonView,boolean isChecked) {
                if (rem_pw.isChecked()) {

                    System.out.println("记住密码已选中");
                    sp.edit().putBoolean("ISCHECK", true).commit();

                }else {

                    System.out.println("记住密码没有选中");
                    sp.edit().putBoolean("ISCHECK", false).commit();

                }

            }
        });

        //监听自动登录多选框事件
        auto_login.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            public void onCheckedChanged(CompoundButton buttonView,boolean isChecked) {
                if (auto_login.isChecked()) {
                    System.out.println("自动登录已选中");
                    sp.edit().putBoolean("AUTO_ISCHECK", true).commit();

                } else {
                    System.out.println("自动登录没有选中");
                    sp.edit().putBoolean("AUTO_ISCHECK", false).commit();
                }
            }
        });
    }