Android MVP模式实现组件和业务逻辑分离

1，Activity代码展示，只需要一下3行重要代码即可完成任何复杂的逻辑

/**
 * 登录界面
 *
 * @author lipanquan
 */
public class LoginActivity extends MVPBaseActivity {

    @Override
    protected void setTitle() {
        getAOP().setTitle();
    }

    @Override
    protected ActivityPresenter initAOP() {
        return new LoginActivityPresenter(this);
    }

    @Override
    public boolean onKeyUp(int keyCode, KeyEvent event) {
        return getAOP().onKeyUp(keyCode, event);
    }

}

2，登录界面的逻辑控制代码
/**
 * 登录界面的逻辑控制
 * Created by lipanquan on 2016/12/7.
 */
public class LoginActivityPresenter extends ActivityPresenter implements
        CompoundButton.OnCheckedChangeListener, View.OnTouchListener, View.OnFocusChangeListener, View.OnClickListener {

    private static final String KEY_IS_REMEMBER_ME = "isRememberMe";
    private static final String KEY_USERNAME = "userName";
    private static final String KEY_PASSWORD = "pwd";

    @Override
    public void setTitle() {
        setTitle(R.string.title_login);
        setLeft(true, R.drawable.selector_btn_back, R.string.string_back);
    }

    /**
     * 登录界面activity
     */
    private final MVPBaseActivity activity;

    /**
     * 构造方法
     *
     * @param activity MVPBaseActivity对象
     */
    public LoginActivityPresenter(MVPBaseActivity activity) {
        this.activity = activity;
    }

    @Override
    protected MVPBaseActivity getActivity() {
        return activity;
    }

    /**
     * 用户名输入框
     */
    @ViewInject(R.id.et_login_username)
    private EditText et_login_username;

    /**
     * 密码输入框
     */
    @ViewInject(R.id.et_login_password)
    private EditText et_login_password;

    /**
     * 记住密码
     */
    @ViewInject(R.id.cb_remember_me)
    private CheckBox cb_remember_me;

    /**
     * 登陆按钮
     */
    @ViewInject(R.id.bt_login)
    private Button bt_login;

    /**
     * 这个页面
     */
    @ViewInject(R.id.ll_login_all)
    private View ll_login_all;

    /**
     * 是否记住用户
     */
    private boolean isAutoLogin = true;

    /**
     * 用户名icon
     */
    @ViewInject(R.id.iv_icon_password)
    private ImageView iv_icon_password;

    /**
     * 快速删除用户名按钮
     */
    @ViewInject(R.id.iv_login_username_del)
    private ImageView iv_login_username_del;

    /**
     * 密码icon
     */
    @ViewInject(R.id.iv_icon_username)
    private ImageView iv_icon_username;

    /**
     * 快速删除密码按钮
     */
    @ViewInject(R.id.iv_login_pwd_del)
    private ImageView iv_login_pwd_del;

    /**
     * 找回密码
     */
    @ViewInject(R.id.tv_retrieve_password)
    private TextView tv_retrieve_password;

    /**
     * 注册
     */
    @ViewInject(R.id.tv_register)
    private TextView tv_register;
    @Override    public void onCreate(Bundle savedInstanceState) {
        setContentView(R.layout.activity_login);
        AnnotateUtils.injectViews(this);
        initTitle(getActivity());
        initDate();
        setListener();
    }
    /**
     * 初始化
     */
    private void initDate() {
        setSwipeBackEnable(true);
        // 这是用户名输入框 下一个焦点为密码输入框
        et_login_username.setNextFocusDownId(R.id.et_login_password);
        isAutoLogin = getBoolean(KEY_IS_REMEMBER_ME, true);
        cb_remember_me.setChecked(isAutoLogin);
        cb_remember_me.setTextColor(getResColor(
                cb_remember_me.isChecked() ? R.color.login_button_bg_color_normal
                        : R.color.six_six));
        et_login_username.setText(getString(KEY_USERNAME));
        et_login_password.setText(getString(KEY_PASSWORD));
        iv_icon_username.setEnabled(false);
        iv_icon_password.setEnabled(false);
        if (!isNull(getString(KEY_USERNAME)))
            iv_icon_username.setEnabled(true);
        if (!isNull(getString(KEY_PASSWORD)))
            iv_icon_password.setEnabled(true);
        if (et_login_password.getText().length() > 0
                && et_login_username.getText().length() > 0) {
            bt_login.setEnabled(true);
        }
    }
    /**
     * 设置控件的 监听事件
     */
    private void setListener() {
        cb_remember_me.setOnCheckedChangeListener(this);
        bt_login.setOnClickListener(this);
        et_login_username.setOnFocusChangeListener(this);
        et_login_password.setOnFocusChangeListener(this);
        et_login_username.addTextChangedListener(new TextWatcher() {
            @Override
            public void afterTextChanged(Editable s) {
                if (s.toString().length() > 0) {
                    if (s.toString().length() > 10) {
                        if (!Utils.getInstance().isMobileNO(s.toString())) {
                            showToastShort(R.string.toast_phone_error);
                        }
                        iv_icon_username.setEnabled(true);
                        if (et_login_password.getText().length() > 5) {
                            bt_login.setEnabled(true);
                        }
                    } else {
                        bt_login.setEnabled(false);
                        iv_icon_username.setEnabled(false);
                    }
                    iv_login_username_del.setVisibility(View.VISIBLE);
                } else {
                    iv_login_username_del.setVisibility(View.GONE);
                    iv_icon_username.setEnabled(false);
                }
            }
        });
        // 密码输入限制
        et_login_password.addTextChangedListener(new TextWatcher() {
            @Override
            public void afterTextChanged(Editable s) {
                if (s.toString().length() > 0) {
                    if (s.toString().length() > 5) {
                        if (et_login_username.getText().toString().length() == 11)
                            bt_login.setEnabled(true);
                        iv_icon_password.setEnabled(true);
                    } else {
                        iv_icon_password.setEnabled(false);
                    }
                    iv_login_pwd_del.setVisibility(View.VISIBLE);
                } else {
                    bt_login.setEnabled(false);
                    iv_login_pwd_del.setVisibility(View.GONE);
                    iv_icon_password.setEnabled(false);
                }
            }
        });
        iv_login_username_del.setOnClickListener(this);
        iv_login_pwd_del.setOnClickListener(this);
        ll_login_all.setOnTouchListener(this);
        tv_retrieve_password.setOnClickListener(this);
        tv_register.setOnClickListener(this);
    }
    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.tv_left: // 返回
                startExitActivity();
                break;
            case R.id.bt_login: // 登录
                loginUser(); // 登陆
                break;
            case R.id.iv_login_username_del: { // 快速删除用户名
                et_login_username.setText("");
                iv_login_username_del.setVisibility(View.GONE);
                break;
            }
            case R.id.iv_login_pwd_del: { // 快速删除密码
                et_login_password.setText("");
                iv_login_pwd_del.setVisibility(View.GONE);
                break;
            }
            case R.id.tv_retrieve_password: { // 找回密码
                // TODO：跳转到找回密码界面
                break;            }
            case R.id.tv_register: { // 注册
　　　　　　　　　// startEnterActivity(RegisterActivity.class);
                break;
            }
        }
    }
    /**
     * 登陆
     */
    private void loginUser() {
        if (!NetUtils.isNetworkConnected(getApplication())) {
            showToastShort(R.string.network_is_not_available_check_your_network_link);
            return;
        }
        String username = et_login_username.getText().toString().trim();
        String password = et_login_password.getText().toString().trim();
        if (isNull(username)) {
            showToastShort(R.string.string_username_hint);
            return;
        }
        if (!Utils.getInstance().isMobileNO(username)) {
            showToastShort(R.string.toast_phone_error);
            return;
        }
//        bt_login.setEnabled(false);
        // TODO: 登录操作
        startEnterActivity(MainActivity.class, true);
    }
    @Override
    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
        switch (buttonView.getId()) {
            case R.id.cb_remember_me: // 记住密码 ToggleButton状态
                cb_remember_me.setTextColor(getResColor(
                        cb_remember_me.isChecked() ? R.color.login_button_bg_color_normal
                                : R.color.six_six));
                putBoolean(KEY_IS_REMEMBER_ME, isChecked);
                isAutoLogin = isChecked;
                break;
        }
    }
    @Override
    public boolean onTouch(View v, MotionEvent event) {
        i(TAG, "onTouch");
        closeKeyboard();
        return false;
    }
    @Override
    public void onFocusChange(View v, boolean hasFocus) {
        switch (v.getId()) {
            case R.id.et_login_username: // 用户名输入框获得焦点
                if (hasFocus && et_login_username.getText().toString().length() > 0) {
                    iv_login_username_del.setVisibility(View.VISIBLE);
                } else {
                    iv_login_username_del.setVisibility(View.GONE);
                }
                break;
            case R.id.et_login_password: // 密码输入框获得焦点
                if (hasFocus && et_login_password.getText().toString().length() > 0) {
                    iv_login_pwd_del.setVisibility(View.VISIBLE);
                } else {
                    iv_login_pwd_del.setVisibility(View.GONE);
                }
                break;
        }
    }
    @Override
    public boolean onKeyUp(int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_BACK) {
            startExitActivity();
            return true;
        }
        return super.onKeyUp(keyCode, event);
    }
}

3,源码地址：待上传