登陆界面

public class LoginActivity extends AppCompatActivity implements View.OnClickListener, UserView {

    private EditText mUserName, mUserPass;
    private CheckBox mCheckBox;
    private SharedPreferences sp;
    private UserPresenterIml userPresenterIml;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);
        // 获取登录页面的点击事件
        findViewById(R.id.tv_register).setOnClickListener(this);
        findViewById(R.id.btn_login).setOnClickListener(this);
        // 获取控件值
        mUserName = (EditText) findViewById(R.id.user_name);
        mUserPass = (EditText) findViewById(R.id.user_pass);
        mCheckBox = (CheckBox) findViewById(R.id.checkbox);
        // getSharedPreferences 存值
        sp = getSharedPreferences("user", MODE_PRIVATE);
        // newP层,调用登录方法
        userPresenterIml = new UserPresenterIml(new UserModelIml(), this);
    }
    // 校验

    @Override
    protected void onResume() {
        super.onResume();
        // 获取账号密码
        String userName = sp.getString("user_name", null);
        String userPass = sp.getString("user_pass", null);
        // 校验
        if (!TextUtils.isEmpty(userName)) {
            mUserName.setText(userName);
        }
        if (!TextUtils.isEmpty(userPass)) {
            mUserPass.setText(userPass);
            // 复选框
            mCheckBox.setChecked(true);
        }
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            // 点击跳转到注册页面
            case R.id.tv_register:
                startActivity(new Intent(LoginActivity.this, RegisterActivity.class));
                break;
            // 点击登录
            case R.id.btn_login:
                doLogin();
                break;
        }
    }

    // 登录
    private void doLogin() {
        // 获取输入的账号密码
        String userName = mUserName.getText().toString().trim();
        String userPass = mUserPass.getText().toString().trim();
        // 校验
        if (TextUtils.isEmpty(userName)){
            toast("请输入您的账号");
            return;
        }
        if (TextUtils.isEmpty(userPass)){
            toast("请输入您的密码");
            return;
        }
        // 给记住密码默认值
        boolean isCheckBox = mCheckBox.isChecked();
        // 进行判断
        if (isCheckBox){// 保存账号密码
            sp.edit().putString("user_name",userName)
                     .putString("user_pass",userPass).commit();
        }else {// 否者清空
            sp.edit().putString("user_name","")
                    .putString("user_pass","").commit();
        }
        // 判断无误后走登录方法
        userPresenterIml.doLogin(userName,userPass);
    }
    // 吐司
    private void toast(String msg) {
        Toast.makeText(this, msg, Toast.LENGTH_LONG).show();
    }
    // 登录成功
    @Override
    public void success(String data) {
        // 解析登录
        UserInFoBean bean = new Gson().fromJson(data, UserInFoBean.class);
        sp.edit().putString("user_name", bean.getResult().getPhone())
                .putString("user_nickName", bean.getResult().getNickName())
                .putString("user_pictrue", bean.getResult().getHeadPic())
                .commit();
        // 跳转展示页面
        startActivity(new Intent(LoginActivity.this,UserInFoActivity.class));

    }
    // 登录失败
    @Override
    public void fail(String error) {
        // 吐司登录失败
      toast(error);
    }
 }