Android项目重构之路:实现篇
项目搭建
-
创建新项目，项目名称为KAndroid，包名为com.keegan.kandroid。默认已创建了app模块，查看下app模块下的build.gradle，会看到第一行为：
apply plugin: 'com.android.application'这行表明了app模块是application类型的。
-
分别新建模块model、api、core，Module Type都选为Android Library，在Add an activity to module页面选择Add No Activity，这三个模块做为库使用，并不需要界面。创建完之后，查看相应模块的build.gradle，会看到第一行为：
apply plugin: 'com.android.library' -
建立模块之间的依赖关系。有两种方法可以设置：
第一种：通过右键模块，然后Open Module Settings，选择模块的Dependencies，点击左下方的加号，选择Module dependency，最后选择要依赖的模块，下图为api模块添加了model依赖；
第二种：直接在模块的build.gradle设置。打开build.gradle，在最后的dependencies一项里面添加新的一行：compile project(':ModuleName')，比如app模块添加对model模块和core模块依赖之后的dependencies如下：
dependencies { compile fileTree(dir: 'libs', include: ['*.jar']) compile 'com.android.support:appcompat-v7:22.0.0' compile project(':model') compile project(':core') }通过上面两种方式的任意一种，创建了模块之间的依赖关系之后，每个模块的build.gradle的dependencies项的结果将会如下：
model:dependencies { compile fileTree(dir: 'libs', include: ['*.jar']) compile 'com.android.support:appcompat-v7:22.0.0' }api:
dependencies { compile fileTree(dir: 'libs', include: ['*.jar']) compile 'com.android.support:appcompat-v7:22.0.0' compile project(':model') }core:
dependencies { compile fileTree(dir: 'libs', include: ['*.jar']) compile 'com.android.support:appcompat-v7:22.0.0' compile project(':model') compile project(':api') }app:
dependencies { compile fileTree(dir: 'libs', include: ['*.jar']) compile 'com.android.support:appcompat-v7:22.0.0' compile project(':model') compile project(':core') }
创建业务对象模型
/**
* 券的业务模型类，封装了券的基本信息。
* 券分为了三种类型：现金券、抵扣券、折扣券。
* 现金券是拥有固定面值的券，有固定的售价；
* 抵扣券是满足一定金额后可以抵扣的券，比如满100减10元；
* 折扣券是可以打折的券。
*
* @version 1.0 创建时间：15/6/21
*/
public class CouponBO implements Serializable {
private static final long serialVersionUID = -8022957276104379230L;
private int id; // 券id
private String name; // 券名称
private String introduce; // 券简介
private int modelType; // 券类型，1为现金券，2为抵扣券，3为折扣券
private double faceValue; // 现金券的面值
private double estimateAmount; // 现金券的售价
private double debitAmount; // 抵扣券的抵扣金额
private double discount; // 折扣券的折扣率（0-100）
private double miniAmount; // 抵扣券和折扣券的最小使用金额
// TODO 所有属性的getter和setter
}
接口层的封装
-
发送验证码接口
URL：http://uat.b.quancome.com/platform/api
参数：参数名 描述 类型 appKey ANDROID_KCOUPON String method service.sendSmsCode4Register String phoneNum 手机号码 String 输出样例：
{ "event": "0", "msg": "success" } -
注册接口
URL：http://uat.b.quancome.com/platform/api
参数：参数名 描述 类型 appKey ANDROID_KCOUPON String method customer.registerByPhone String phoneNum 手机号码 String code 验证码 String password MD5加密密码 String 输出样例：
{ "event": "0", "msg": "success" } -
登录接口
URL：http://uat.b.quancome.com/platform/api
其他参数：参数名 描述 类型 appKey ANDROID_KCOUPON String method customer.loginByApp String loginName 登录名（手机号） String password MD5加密密码 String imei 手机imei串号 String loginOS 系统，android为1 int 输出样例：
{ "event": "0", "msg": "success" } -
券列表
URL：http://uat.b.quancome.com/platform/api
其他参数：参数名 描述 类型 appKey ANDROID_KCOUPON String method issue.listNewCoupon String currentPage 当前页数 int pageSize 每页显示数量 int 输出样例：
{ "event": "0", "msg": "success", "maxCount": 125, "maxPage": 7, "currentPage": 1, "pageSize": 20, "objList":[ {"id": 1, "name": "测试现金券", "modelType": 1, ...}, {...}, ... ]}
{"event": "0", "msg": "success"}
{"event": "0", "msg": "success", "obj":{...}}
{"event": "0", "msg": "success", "objList":[{...}, {...}], "currentPage": 1, "pageSize": 20, "maxCount": 2, "maxPage": 1}
public class ApiResponse<T> {
private String event; // 返回码，0为成功
private String msg; // 返回信息
private T obj; // 单个对象
private T objList; // 数组对象
private int currentPage; // 当前页数
private int pageSize; // 每页显示数量
private int maxCount; // 总条数
private int maxPage; // 总页数
// 构造函数，初始化code和msg
public ApiResponse(String event, String msg) {
this.event = event;
this.msg = msg;
}
// 判断结果是否成功
public boolean isSuccess() {
return event.equals("0");
}
// TODO 所有属性的getter和setter
}
public interface Api {
// 发送验证码
public final static String SEND_SMS_CODE = "service.sendSmsCode4Register";
// 注册
public final static String REGISTER = "customer.registerByPhone";
// 登录
public final static String LOGIN = "customer.loginByApp";
// 券列表
public final static String LIST_COUPON = "issue.listNewCoupon";
/**
* 发送验证码
*
* @param phoneNum 手机号码
* @return 成功时返回：{ "event": "0", "msg":"success" }
*/
public ApiResponse<Void> sendSmsCode4Register(String phoneNum);
/**
* 注册
*
* @param phoneNum 手机号码
* @param code 验证码
* @param password MD5加密的密码
* @return 成功时返回：{ "event": "0", "msg":"success" }
*/
public ApiResponse<Void> registerByPhone(String phoneNum, String code, String password);
/**
* 登录
*
* @param loginName 登录名（手机号）
* @param password MD5加密的密码
* @param imei 手机IMEI串号
* @param loginOS Android为1
* @return 成功时返回：{ "event": "0", "msg":"success" }
*/
public ApiResponse<Void> loginByApp(String loginName, String password, String imei, int loginOS);
/**
* 券列表
*
* @param currentPage 当前页数
* @param pageSize 每页显示数量
* @return 成功时返回：{ "event": "0", "msg":"success", "objList":[...] }
*/
public ApiResponse<List<CouponBO>> listNewCoupon(int currentPage, int pageSize);
}
public class ApiImpl implements Api {
private final static String APP_KEY = "ANDROID_KCOUPON";
private final static String TIME_OUT_EVENT = "CONNECT_TIME_OUT";
private final static String TIME_OUT_EVENT_MSG = "连接服务器失败";
// http引擎
private HttpEngine httpEngine;
public ApiImpl() {
httpEngine = HttpEngine.getInstance();
}
@Override
public ApiResponse<Void> sendSmsCode4Register(String phoneNum) {
Map<String, String> paramMap = new HashMap<String, String>();
paramMap.put("appKey", APP_KEY);
paramMap.put("method", SEND_SMS_CODE);
paramMap.put("phoneNum", phoneNum);
Type type = new TypeToken<ApiResponse<Void>>(){}.getType();
try {
return httpEngine.postHandle(paramMap, type);
} catch (IOException e) {
return new ApiResponse(TIME_OUT_EVENT, TIME_OUT_EVENT_MSG);
}
}
@Override
public ApiResponse<Void> registerByPhone(String phoneNum, String code, String password) {
Map<String, String> paramMap = new HashMap<String, String>();
paramMap.put("appKey", APP_KEY);
paramMap.put("method", REGISTER);
paramMap.put("phoneNum", phoneNum);
paramMap.put("code", code);
paramMap.put("password", EncryptUtil.makeMD5(password));
Type type = new TypeToken<ApiResponse<List<CouponBO>>>(){}.getType();
try {
return httpEngine.postHandle(paramMap, type);
} catch (IOException e) {
return new ApiResponse(TIME_OUT_EVENT, TIME_OUT_EVENT_MSG);
}
}
@Override
public ApiResponse<Void> loginByApp(String loginName, String password, String imei, int loginOS) {
Map<String, String> paramMap = new HashMap<String, String>();
paramMap.put("appKey", APP_KEY);
paramMap.put("method", LOGIN);
paramMap.put("loginName", loginName);
paramMap.put("password", EncryptUtil.makeMD5(password));
paramMap.put("imei", imei);
paramMap.put("loginOS", String.valueOf(loginOS));
Type type = new TypeToken<ApiResponse<List<CouponBO>>>(){}.getType();
try {
return httpEngine.postHandle(paramMap, type);
} catch (IOException e) {
return new ApiResponse(TIME_OUT_EVENT, TIME_OUT_EVENT_MSG);
}
}
@Override
public ApiResponse<List<CouponBO>> listNewCoupon(int currentPage, int pageSize) {
Map<String, String> paramMap = new HashMap<String, String>();
paramMap.put("appKey", APP_KEY);
paramMap.put("method", LIST_COUPON);
paramMap.put("currentPage", String.valueOf(currentPage));
paramMap.put("pageSize", String.valueOf(pageSize));
Type type = new TypeToken<ApiResponse<List<CouponBO>>>(){}.getType();
try {
return httpEngine.postHandle(paramMap, type);
} catch (IOException e) {
return new ApiResponse(TIME_OUT_EVENT, TIME_OUT_EVENT_MSG);
}
}
}
public class HttpEngine {
private final static String SERVER_URL = "http://uat.b.quancome.com/platform/api";
private final static String REQUEST_MOTHOD = "POST";
private final static String ENCODE_TYPE = "UTF-8";
private final static int TIME_OUT = 15000;
private static HttpEngine instance = null;
private HttpEngine() {
}
public static HttpEngine getInstance() {
if (instance == null) {
instance = new HttpEngine();
}
return instance;
}
public <T> T postHandle(Map<String, String> paramsMap, Type typeOfT) throws IOException {
String data = joinParams(paramsMap);
HttpUrlConnection connection = getConnection();
connection.setRequestProperty("Content-Length", String.valueOf(data.getBytes().length));
connection.connect();
OutputStream os = connection.getOutputStream();
os.write(data.getBytes());
os.flush();
if (connection.getResponseCode() == 200) {
// 获取响应的输入流对象
InputStream is = connection.getInputStream();
// 创建字节输出流对象
ByteArrayOutputStream baos = new ByteArrayOutputStream();
// 定义读取的长度
int len = 0;
// 定义缓冲区
byte buffer[] = new byte[1024];
// 按照缓冲区的大小，循环读取
while ((len = is.read(buffer)) != -1) {
// 根据读取的长度写入到os对象中
baos.write(buffer, 0, len);
}
// 释放资源
is.close();
baos.close();
connection.disconnect();
// 返回字符串
final String result = new String(baos.toByteArray());
Gson gson = new Gson();
return gson.fromJson(result, typeOfT);
} else {
connection.disconnect();
return null;
}
}
private HttpURLConnection getConnection() {
HttpURLConnection connection = null;
// 初始化connection
try {
// 根据地址创建URL对象
URL url = new URL(SERVER_URL);
// 根据URL对象打开链接
connection = (HttpURLConnection) url.openConnection();
// 设置请求的方式
connection.setRequestMethod(REQUEST_MOTHOD);
// 发送POST请求必须设置允许输入，默认为true
connection.setDoInput(true);
// 发送POST请求必须设置允许输出
connection.setDoOutput(true);
// 设置不使用缓存
connection.setUseCaches(false);
// 设置请求的超时时间
connection.setReadTimeout(TIME_OUT);
connection.setConnectTimeout(TIME_OUT);
connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
connection.setRequestProperty("Connection", "keep-alive");
connection.setRequestProperty("Response-Type", "json");
connection.setChunkedStreamingMode(0);
} catch (IOException e) {
e.printStackTrace();
}
return connection;
}
private String joinParams(Map<String, String> paramsMap) {
StringBuilder stringBuilder = new StringBuilder();
for (String key : paramsMap.keySet()) {
stringBuilder.append(key);
stringBuilder.append("=");
try {
stringBuilder.append(URLEncoder.encode(paramsMap.get(key), ENCODE_TYPE));
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
stringBuilder.append("&");
}
return stringBuilder.substring(0, stringBuilder.length() - 1);
}
}
核心层的逻辑
public interface AppAction {
// 发送手机验证码
public void sendSmsCode(String phoneNum, ActionCallbackListener<Void> listener);
// 注册
public void register(String phoneNum, String code, String password, ActionCallbackListener<Void> listener);
// 登录
public void login(String loginName, String password, ActionCallbackListener<Void> listener);
// 按分页获取券列表
public void listCoupon(int currentPage, ActionCallbackListener<List<CouponBO>> listener);
}
public interface ActionCallbackListener<T> {
/**
* 成功时调用
*
* @param data 返回的数据
*/
public void onSuccess(T data);
/**
* 失败时调用
*
* @param errorEvemt 错误码
* @param message 错误信息
*/
public void onFailure(String errorEvent, String message);
}
public class AppActionImpl implements AppAction {
private final static int LOGIN_OS = 1; // 表示Android
private final static int PAGE_SIZE = 20; // 默认每页20条
private Context context;
private Api api;
public AppActionImpl(Context context) {
this.context = context;
this.api = new ApiImpl();
}
@Override
public void sendSmsCode(final String phoneNum, final ActionCallbackListener<Void> listener) {
// 参数为空检查
if (TextUtils.isEmpty(phoneNum)) {
if (listener != null) {
listener.onFailure(ErrorEvent.PARAM_NULL, "手机号为空");
}
return;
}
// 参数合法性检查
Pattern pattern = Pattern.compile("1\\d{10}");
Matcher matcher = pattern.matcher(phoneNum);
if (!matcher.matches()) {
if (listener != null) {
listener.onFailure(ErrorEvent.PARAM_ILLEGAL, "手机号不正确");
}
return;
}
// 请求Api
new AsyncTask<Void, Void, ApiResponse<Void>>() {
@Override
protected ApiResponse<Void> doInBackground(Void... voids) {
return api.sendSmsCode4Register(phoneNum);
}
@Override
protected void onPostExecute(ApiResponse<Void> response) {
if (listener != null && response != null) {
if (response.isSuccess()) {
listener.onSuccess(null);
} else {
listener.onFailure(response.getEvent(), response.getMsg());
}
}
}
}.execute();
}
@Override
public void register(final String phoneNum, final String code, final String password, final ActionCallbackListener<Void> listener) {
// 参数为空检查
if (TextUtils.isEmpty(phoneNum)) {
if (listener != null) {
listener.onFailure(ErrorEvent.PARAM_NULL, "手机号为空");
}
return;
}
if (TextUtils.isEmpty(code)) {
if (listener != null) {
listener.onFailure(ErrorEvent.PARAM_NULL, "验证码为空");
}
return;
}
if (TextUtils.isEmpty(password)) {
if (listener != null) {
listener.onFailure(ErrorEvent.PARAM_NULL, "密码为空");
}
return;
}
// 参数合法性检查
Pattern pattern = Pattern.compile("1\\d{10}");
Matcher matcher = pattern.matcher(phoneNum);
if (!matcher.matches()) {
if (listener != null) {
listener.onFailure(ErrorEvent.PARAM_ILLEGAL, "手机号不正确");
}
return;
}
// TODO 长度检查，密码有效性检查等
// 请求Api
new AsyncTask<Void, Void, ApiResponse<Void>>() {
@Override
protected ApiResponse<Void> doInBackground(Void... voids) {
return api.registerByPhone(phoneNum, code, password);
}
@Override
protected void onPostExecute(ApiResponse<Void> response) {
if (listener != null && response != null) {
if (response.isSuccess()) {
listener.onSuccess(null);
} else {
listener.onFailure(response.getEvent(), response.getMsg());
}
}
}
}.execute();
}
@Override
public void login(final String loginName, final String password, final ActionCallbackListener<Void> listener) {
// 参数为空检查
if (TextUtils.isEmpty(loginName)) {
if (listener != null) {
listener.onFailure(ErrorEvent.PARAM_NULL, "登录名为空");
}
return;
}
if (TextUtils.isEmpty(password)) {
if (listener != null) {
listener.onFailure(ErrorEvent.PARAM_NULL, "密码为空");
}
return;
}
// TODO 长度检查，密码有效性检查等
// 请求Api
new AsyncTask<Void, Void, ApiResponse<Void>>() {
@Override
protected ApiResponse<Void> doInBackground(Void... voids) {
TelephonyManager telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
String imei = telephonyManager.getDeviceId();
return api.loginByApp(loginName, password, imei, LOGIN_OS);
}
@Override
protected void onPostExecute(ApiResponse<Void> response) {
if (listener != null && response != null) {
if (response.isSuccess()) {
listener.onSuccess(null);
} else {
listener.onFailure(response.getEvent(), response.getMsg());
}
}
}
}.execute();
}
@Override
public void listCoupon(final int currentPage, final ActionCallbackListener<List<CouponBO>> listener) {
// 参数检查
if (currentPage < 0) {
if (listener != null) {
listener.onFailure(ErrorEvent.PARAM_ILLEGAL, "当前页数小于零");
}
}
// TODO 添加缓存
// 请求Api
new AsyncTask<Void, Void, ApiResponse<List<CouponBO>>>() {
@Override
protected ApiResponse<List<CouponBO>> doInBackground(Void... voids) {
return api.listNewCoupon(currentPage, PAGE_SIZE);
}
@Override
protected void onPostExecute(ApiResponse<List<CouponBO>> response) {
if (listener != null && response != null) {
if (response.isSuccess()) {
listener.onSuccess(response.getObjList());
} else {
listener.onFailure(response.getEvent(), response.getMsg());
}
}
}
}.execute();
}
}
界面层
public class KApplication extends Application {
private AppAction appAction;
@Override
public void onCreate() {
super.onCreate();
appAction = new AppActionImpl(this);
}
public AppAction getAppAction() {
return appAction;
}
}
public abstract class KBaseActivity extends FragmentActivity {
// 上下文实例
public Context context;
// 应用全局的实例
public KApplication application;
// 核心层的Action实例
public AppAction appAction;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
context = getApplicationContext();
application = (KApplication) this.getApplication();
appAction = application.getAppAction();
}
}
public class LoginActivity extends KBaseActivity {
private EditText phoneEdit;
private EditText passwordEdit;
private Button loginBtn;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
// 初始化View
initViews();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_login, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
// 如果是注册按钮
if (id == R.id.action_register) {
Intent intent = new Intent(this, RegisterActivity.class);
startActivity(intent);
return true;
}
return super.onOptionsItemSelected(item);
}
// 初始化View
private void initViews() {
phoneEdit = (EditText) findViewById(R.id.edit_phone);
passwordEdit = (EditText) findViewById(R.id.edit_password);
loginBtn = (Button) findViewById(R.id.btn_login);
}
// 准备登录
public void toLogin(View view) {
String loginName = phoneEdit.getText().toString();
String password = passwordEdit.getText().toString();
loginBtn.setEnabled(false);
this.appAction.login(loginName, password, new ActionCallbackListener<Void>() {
@Override
public void onSuccess(Void data) {
Toast.makeText(context, R.string.toast_login_success, Toast.LENGTH_SHORT).show();
Intent intent = new Intent(context, CouponListActivity.class);
startActivity(intent);
finish();
}
@Override
public void onFailure(String errorEvent, String message) {
Toast.makeText(context, message, Toast.LENGTH_SHORT).show();
loginBtn.setEnabled(true);
}
});
}
}
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.keegan.kandroid.activity.LoginActivity">
<EditText
android:id="@+id/edit_phone"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/edit_vertical_margin"
android:layout_marginBottom="@dimen/edit_vertical_margin"
android:hint="@string/hint_phone"
android:inputType="phone"
android:singleLine="true" />
<EditText
android:id="@+id/edit_password"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/edit_vertical_margin"
android:layout_marginBottom="@dimen/edit_vertical_margin"
android:hint="@string/hint_password"
android:inputType="textPassword"
android:singleLine="true" />
<Button
android:id="@+id/btn_login"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/btn_vertical_margin"
android:layout_marginBottom="@dimen/btn_vertical_margin"
android:onClick="toLogin"
android:text="@string/btn_login" />
</LinearLayout>
public abstract class KBaseAdapter<T> extends BaseAdapter {
protected Context context;
protected LayoutInflater inflater;
protected List<T> itemList = new ArrayList<T>();
public KBaseAdapter(Context context) {
this.context = context;
inflater = LayoutInflater.from(context);
}
/**
* 判断数据是否为空
*
* @return 为空返回true，不为空返回false
*/
public boolean isEmpty() {
return itemList.isEmpty();
}
/**
* 在原有的数据上添加新数据
*
* @param itemList
*/
public void addItems(List<T> itemList) {
this.itemList.addAll(itemList);
notifyDataSetChanged();
}
/**
* 设置为新的数据，旧数据会被清空
*
* @param itemList
*/
public void setItems(List<T> itemList) {
this.itemList.clear();
this.itemList = itemList;
notifyDataSetChanged();
}
/**
* 清空数据
*/
public void clearItems() {
itemList.clear();
notifyDataSetChanged();
}
@Override
public int getCount() {
return itemList.size();
}
@Override
public Object getItem(int i) {
return itemList.get(i);
}
@Override
public long getItemId(int i) {
return i;
}
@Override
abstract public View getView(int i, View view, ViewGroup viewGroup);
}
public class CouponListAdapter extends KBaseAdapter<CouponBO> {
public CouponListAdapter(Context context) {
super(context);
}
@Override
public View getView(int i, View view, ViewGroup viewGroup) {
ViewHolder holder;
if (view == null) {
view = inflater.inflate(R.layout.item_list_coupon, viewGroup, false);
holder = new ViewHolder();
holder.titleText = (TextView) view.findViewById(R.id.text_item_title);
holder.infoText = (TextView) view.findViewById(R.id.text_item_info);
holder.priceText = (TextView) view.findViewById(R.id.text_item_price);
view.setTag(holder);
} else {
holder = (ViewHolder) view.getTag();
}
CouponBO coupon = itemList.get(i);
holder.titleText.setText(coupon.getName());
holder.infoText.setText(coupon.getIntroduce());
SpannableString priceString;
// 根据不同的券类型展示不同的价格显示方式
switch (coupon.getModelType()) {
default:
case CouponBO.TYPE_CASH:
priceString = CouponPriceUtil.getCashPrice(context, coupon.getFaceValue(), coupon.getEstimateAmount());
break;
case CouponBO.TYPE_DEBIT:
priceString = CouponPriceUtil.getVoucherPrice(context, coupon.getDebitAmount(), coupon.getMiniAmount());
break;
case CouponBO.TYPE_DISCOUNT:
priceString = CouponPriceUtil.getDiscountPrice(context, coupon.getDiscount(), coupon.getMiniAmount());
break;
}
holder.priceText.setText(priceString);
return view;
}
static class ViewHolder {
TextView titleText;
TextView infoText;
TextView priceText;
}
}
public class CouponListActivity extends KBaseActivity implements SwipeRefreshLayout.OnRefreshListener {
private SwipeRefreshLayout swipeRefreshLayout;
private ListView listView;
private CouponListAdapter listAdapter;
private int currentPage = 1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_coupon_list);
initViews();
getData();
// TODO 添加上拉加载更多的功能
}
private void initViews() {
swipeRefreshLayout = (SwipeRefreshLayout) findViewById(R.id.swipe_refresh_layout);
swipeRefreshLayout.setOnRefreshListener(this);
listView = (ListView) findViewById(R.id.list_view);
listAdapter = new CouponListAdapter(this);
listView.setAdapter(listAdapter);
}
private void getData() {
this.appAction.listCoupon(currentPage, new ActionCallbackListener<List<CouponBO>>() {
@Override
public void onSuccess(List<CouponBO> data) {
if (!data.isEmpty()) {
if (currentPage == 1) { // 第一页
listAdapter.setItems(data);
} else { // 分页数据
listAdapter.addItems(data);
}
}
swipeRefreshLayout.setRefreshing(false);
}
@Override
public void onFailure(String errorEvent, String message) {
Toast.makeText(context, message, Toast.LENGTH_SHORT).show();
swipeRefreshLayout.setRefreshing(false);
}
});
}
@Override
public void onRefresh() {
// 需要重置当前页为第一页，并且清掉数据
currentPage = 1;
listAdapter.clearItems();
getData();
}
}