登录，注册，展示图片

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

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

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_login);
    findViewById(R.id.tv_register).setOnClickListener(this);
    findViewById(R.id.btn_login).setOnClickListener(this);

    mUserName = findViewById(R.id.user_name);
    mUserPass = findViewById(R.id.user_pass);
    mCheckBox = findViewById(R.id.checkbox);

    sp = getSharedPreferences("user", MODE_PRIVATE);

    userPresenterIml = new UserPresenterIml(new UserModelIml(), this);
}

@Override
protected void onResume() {
    super.onResume();
    String userName = sp.getString("user_name", null);
    String userPass = sp.getString("user_pass", null);
    if (!TextUtils.isEmpty(userName)){
        mUserName.setText(userName);
    }
    if (!TextUtils.isEmpty(userPass)){
        mUserName.setText(userPass);
        mCheckBox.setChecked(true);
    }
}
@Override
public void onClick(View v) {
    switch (v.getId()) {
        case R.id.tv_register://跳转到注册
            startActivity(new Intent(LoginActivity.this, RegisterActivity.class));
            break;
        case R.id.btn_login://点击登录
            doLogin();
            break;
    }
}
//登录
private void doLogin() {
    userName = mUserName.getText().toString().trim();
    userPass = mUserPass.getText().toString().trim();
    if (TextUtils.isEmpty(userName)) {
        toast("请输入您的账号");
        return;
    }
    if (TextUtils.isEmpty(userName)) {
        toast("请输入您的密码");
        return;
    }
    //走登录
    userPresenterIml.doLogin(userName, userPass);

}
private void toast(String msg) {
    Toast.makeText(this, msg, Toast.LENGTH_LONG).show();
}

@Override
public void success(String data) {
    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();

    boolean isChekBox = mCheckBox.isChecked();
    if (isChekBox) {
        sp.edit().putString("user_name", userName)
                .putString("user_pass", userPass).commit();
    } else {
        sp.edit().putString("user_name", "")
                .putString("user_pass", "").commit();
    }
    //跳到用户信息展示页面
    startActivity(new Intent(LoginActivity.this, UserInFoActivity.class));
}
@Override
public void fail(String error) {
    toast(error);
}

}
注册RegisterActivity
public class RegisterActivity extends AppCompatActivity implements View.OnClickListener, UserView {
private EditText mUserName, mUserPass, mUserPass2;
private UserPresenterIml mUserPresenterIml;
private SharedPreferences sp;
private String userName;

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_register);
    findViewById(R.id.btn_register).setOnClickListener(this);
    findViewById(R.id.tv_login).setOnClickListener(this);

    mUserName = findViewById(R.id.user_name);
    mUserPass = findViewById(R.id.user_pass);
    mUserPass2 = findViewById(R.id.user_pass2);

    mUserPresenterIml = new UserPresenterIml(new UserModelIml(), this);

    sp = getSharedPreferences("user", MODE_PRIVATE);


}

@Override
public void onClick(View v) {
    switch (v.getId()) {
        case R.id.btn_register://点击注册
            doRegister();
            break;
        case R.id.tv_login://已有账号，立即注册
            finish();
            break;
    }
}

//注册
private void doRegister() {
    userName = mUserName.getText().toString().trim();
    String userPass = mUserPass.getText().toString().trim();
    String userPass2 = mUserPass2.getText().toString().trim();
    if (TextUtils.isEmpty(userName)) {
        toast("请输入你的账号");
        return;
    }
    if (TextUtils.isEmpty(userPass)) {
        toast("请输入你的密码");
        return;
    }
    if (TextUtils.isEmpty(userPass2)) {
        toast("请输确认的密码");
        return;
    }
    if (!userPass.equals(userPass2)) {
        toast("请检查您两次密码是否一致");
        return;
    }
    //走注册
    mUserPresenterIml.doRegister(userName,userPass);
}

private void toast(String msg) {
    Toast.makeText(this, msg, Toast.LENGTH_SHORT).show();

}

@Override
public void success(String data) {
    UserBean bean = new Gson().fromJson(data, UserBean.class);
    toast(bean.getMessage());
    sp.edit().putString("user_name", userName).commit();
    if (bean.getStatus().equals("0000")) {
        finish();
    }
}

@Override
public void fail(String error) {
    toast(error);
}

@Override
protected void onDestroy() {
    super.onDestroy();
    mUserPresenterIml.destory();
}

}
登录成功展示图片UserInFoActivity

public class UserInFoActivity extends AppCompatActivity {

private SharedPreferences sp;

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_user_in_fo);
    sp = getSharedPreferences("user", MODE_PRIVATE);
    String userName = sp.getString("user_name",null);
    String userNickName = sp.getString("user_nickName",null);
    String userPictrue = sp.getString("user_pictrue",null);

    ImageView imageView = findViewById(R.id.image_pictrue);
    TextView textView = findViewById(R.id.tv_nickname);
    Glide.with(this).load(userPictrue).into(imageView);
    textView.setText(userNickName);

}

}