android：MPV

本文供自己查阅
android MVP模式结构代码。
model层包含：
IUser接口（定义model功能，数据json解析,从缓存获取数据，从数据库获取数据等，相当于MVC的DAO层），UserModel实现Iuser接口（model功能的具体实现代码），BaseBean(bean父类)，UserBean（数据封装bean）,UserListBean(数据封装bean List,该类继承BaseBean)

presenter层包含：
ILoginPersenter接口(定义业务逻辑功能，登录、注册、从网络获取数据等)
LoginPersenterComl类实现ILoginPersenter接口（具体的业务逻辑代码）

View层包含：
ILoginView接口（定义界面逻辑功能，一切操作UI的功能，该接口的方法必须在MAIN线程执行）
LoginActivity类实现ILoginView接口（具体的界面逻辑功能代码实现，响应用户输入输出，生命周期管理，实例化控件等）

以下代码例子中以登录为业务场景，但是数据返回user集合，虽然不符合正常登录业务，但是不影响模拟MVP模式

LoginActivity 界面:

    public class LoginActivity extends ActionBarActivity implements ILoginView, View.OnClickListener {private EditText editUser;private EditText editPass;private Button   btnLogin;private Button   btnClear;ILoginPresenter loginPresenter;private ProgressBar progressBar;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);//find vieweditUser = (EditText) this.findViewById(R.id.et_login_username);editPass = (EditText) this.findViewById(R.id.et_login_password);btnLogin = (Button) this.findViewById(R.id.btn_login_login);btnClear = (Button) this.findViewById(R.id.btn_login_clear);progressBar = (ProgressBar) this.findViewById(R.id.progress_login);//set listenerbtnLogin.setOnClickListener(this);btnClear.setOnClickListener(this);//initloginPresenter = new LoginPresenterCompl(this);loginPresenter.setProgressBarVisiblity(View.INVISIBLE);}@Overridepublic void onClick(View v) {switch (v.getId()){case R.id.btn_login_clear:loginPresenter.clear();break;case R.id.btn_login_login:loginPresenter.setProgressBarVisiblity(View.VISIBLE);btnLogin.setEnabled(false);btnClear.setEnabled(false);loginPresenter.doLogin(editUser.getText().toString(), editPass.getText().toString());break;}}@Overridepublic void onClearText() {editUser.setText("");editPass.setText("");}@Overridepublic void onLoginResult(int code) {loginPresenter.setProgressBarVisiblity(View.INVISIBLE);btnLogin.setEnabled(true);btnClear.setEnabled(true);if (code == 1){Toast.makeText(this,"Login Success",Toast.LENGTH_SHORT).show();startActivity(new Intent(this, HomeActivity.class));}elseToast.makeText(this,"Login Fail, code = " + code,Toast.LENGTH_SHORT).show();}@Overridepublic void onSetProgressBarVisibility(int visibility) {progressBar.setVisibility(visibility);}
}

ILoginView 接口：

public interface ILoginView {public void onClearText();public void onLoginResult(Boolean result, int code);public void onSetProgressBarVisibility(int visibility);
}

ILoginPresenter接口：

public interface ILoginPresenter {void clear();void doLogin(String name, String passwd);void setProgressBarVisiblity(int visiblity);
}

LoginPresenterCompl 为接口ILoginPresenter的实现类

public class LoginPresenterCompl implements ILoginPresenter {ILoginView iLoginView;IUser user;Handler    handler;public LoginPresenterCompl(ILoginView iLoginView) {this.iLoginView = iLoginView;initUser();handler = new Handler(Looper.getMainLooper());}@Overridepublic void clear() {iLoginView.onClearText();}@Overridepublic void doLogin(String name, String passwd) {client.get(url, new AsyncHttpResponseHandler() {UserListBean userListBean = null;@Overridepublic void onSuccess(String response) {userListBean = user.getLoginBean(response);if(userListBean != null && userListBean .recode == Constant.REQUEST_SUCCESS){user.setLastLoginJson(mContext.getApplicationContext(), response);}else{userListBean = user.getLoginBean(user.getLastLoginJson(mContext));}if(userListBean != null && userListBean .recode == Constant.REQUEST_SUCCESS){iLoginView.onLoginResult(userListBean.recode);}else{iLoginView.onLoginResult(0);}}}@Overridepublic void setProgressBarVisiblity(int visiblity){iLoginView.onSetProgressBarVisibility(visiblity);}private void initUser(){user = new UserModel();}
}

BaseBean基类：

public class BaseBean {public int recode;public String msg;
}

UserBean类：

class UserBean{public String name;public String number;
}class UserListBean extend BaseBean {public List list = new ArrayList();}

IUser接口：

public interface IUser{//缓存上一次有效的json返回结果public void setLastLoginJson(Context context, String value);//获取上一次缓存的login jsonpublic String getLastLoginJson(Context context);//解析json得到beanpublic BannerBean getLoginBean(String json);
}

IUser接口实现类UserModel:

class UserModel implements IUser{private static final String JSON_CACHE_PREF =Constant.JSON_CACHE_SHAREDPREFERENCE_NAME;private static final String KEY_LOGIN_JSON = "loginJson";@Overridepublic void setLastLoginJson(Context context, String value) {SharedPreferences spf = context.getSharedPreferences(JSON_CACHE_PREF, Context.MODE_PRIVATE);Editor editor = spf.edit();editor.putString(KEY_LOGIN_JSON , value);editor.commit();}@Overridepublic String getLastLoginJson(Context context) {SharedPreferences spf = context.getSharedPreferences(JSON_CACHE_PREF, Context.MODE_PRIVATE);return spf.getString(KEY_LOGIN_JSON , null);}@Overridepublic UserListBean getLoginBean(String json) {UserListBean userListBean= new UserListBean();try{JSONObject jobj = new JSONObject(json);bean.recode = jobj.optInt("result");bean.msg = jobj.optString("msg");if(bean.recode == Constant.REQUEST_FAIL){return bean;}JSONArray jarrchildren = jobj.getJSONArray("content");for(int i = 0; i < jarrchildren.length(); i++){UserBeanitem = new UserBean();JSONObject jobjitem = jarrchildren.getJSONObject(i);item.name = jobjitem.optString("name");item.number = jobjitem.optString("number");userListBean.list.add(item);}}catch(Exception e){return null;}return userListBean;}
}

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