最近看到很多博客網(wǎng)站上出現(xiàn)了HarmonyOS的征文活動(dòng)，看到那些精美的獎(jiǎng)品讓我也安耐不住開了，當(dāng)然獎(jiǎng)品的誘惑當(dāng)然是抵擋不住我對技術(shù)的狂熱追求，對于開發(fā)者而言技術(shù)沒有頂峰沒有終點(diǎn)。那么今天給大家做一個(gè)卡片服務(wù)開發(fā)的經(jīng)驗(yàn)分享，如果有什么地方說的不對的請各位開發(fā)者進(jìn)行指正，如果有什么問題也可以發(fā)私信或者直接在帖子中留言，我也會(huì)及時(shí)回復(fù)大家。
一、什么是服務(wù)卡片
服務(wù)卡片（以下簡稱“卡片”）是FA的一種界面展示形式，將FA的重要信息或操作直接放置到卡片中，用戶通過直接操作卡片就可以達(dá)到應(yīng)用的使用體驗(yàn)，這樣做大大減少了應(yīng)用的使用層級性。
卡片常用于嵌入到其他應(yīng)用中作為其界面的一部分顯示（也可以使用原子化服務(wù)將應(yīng)用保存到服務(wù)中心中，這種方式不需要安裝應(yīng)用），并支持拉起頁面，發(fā)送消息等基礎(chǔ)的交互功能。
原子化服務(wù)在下個(gè)帖子中介紹。
示例如下圖所示。
image
為了開發(fā)者能夠便于理解，官方將服務(wù)卡片分為三方面：
-
卡片使用方
顯示卡片內(nèi)容的宿主應(yīng)用，控制卡片在宿主中展示的位置。 -
卡片管理服務(wù)
用于管理系統(tǒng)中所添加卡片的常駐代理服務(wù)，包括卡片對象的管理與使用，以及卡片周期性刷新等。 -
卡片提供方
提供卡片顯示內(nèi)容的HarmonyOS應(yīng)用或原子化服務(wù)，控制卡片的顯示內(nèi)容、控件布局以及控件點(diǎn)擊事件
卡片使用方和提供方不要求常駐運(yùn)行，在需要添加/刪除/請求更新卡片時(shí)，卡片管理服務(wù)會(huì)拉起卡片提供方獲取卡片信息。
二、服務(wù)卡片的運(yùn)作機(jī)制
文字描述滯后，先上圖。（圖片由官網(wǎng)提供，此處借用一下）
image
從圖中可以清楚的看到卡片服務(wù)的整體通信層都是由"RPC"負(fù)責(zé)，通過通信適配層構(gòu)成了數(shù)據(jù)發(fā)送接收的通道。
卡片管理服務(wù)
- 周期性刷新：在卡片添加后，根據(jù)卡片的刷新策略啟動(dòng)定時(shí)任務(wù)周期性觸發(fā)卡片的刷新。
- 卡片緩存管理：在卡片添加到卡片管理服務(wù)后，對卡片的視圖信息進(jìn)行緩存，以便下次獲取卡片時(shí)可以直接返回緩存數(shù)據(jù)，降低時(shí)延。
- 卡片生命周期管理：對于卡片切換到后臺(tái)或者被遮擋時(shí)，暫停卡片的刷新；以及卡片的升級/卸載場景下對卡片數(shù)據(jù)的更新和清理。
- 卡片使用方對象管理：對卡片使用方的RPC對象進(jìn)行管理，用于使用方請求進(jìn)行校驗(yàn)以及對卡片更新后的回調(diào)處理。
卡片提供方
- 創(chuàng)建卡片實(shí)例并實(shí)現(xiàn)onCreateForm、onUpdateForm和onDeleteForm處理創(chuàng)建卡片、更新卡片以及刪除卡片等請求，提供相應(yīng)的卡片服務(wù)。
三 、服務(wù)卡片的實(shí)現(xiàn)（java）
第一步、下載、安裝、配置 DevEco Studio
第二步、運(yùn)行DevEco Studio創(chuàng)建新項(xiàng)目
因?yàn)橐褂胘ava語言編寫，所以此處要選擇支持Java語言的空頁面。
image
選擇成功進(jìn)入新建項(xiàng)目配置界面。
image
點(diǎn)擊Finish進(jìn)入項(xiàng)目。
image
第三步、添加卡片模板
創(chuàng)建模板：右擊“Entry”→“New”→“Server Widget”
image
image
設(shè)置模板
image
第四步、查看卡片服務(wù)配置
項(xiàng)目目錄
image
由圖可見：添加卡片模板后在原來項(xiàng)目中增加一個(gè)widget文件夾，并在文件夾中出現(xiàn)了三個(gè)文件FormControllerManager.java、FormController.java、CardWidgetImpl.java。三個(gè)文件對應(yīng)了卡片服務(wù)的運(yùn)行機(jī)制，通過關(guān)系的對應(yīng)可以清楚的了解到代碼運(yùn)行原理
FormControllerManager.java（卡片控制器管理【卡片服務(wù)管理】）
public class FormControllerManager {
private static final HiLogLabel TAG = new HiLogLabel(HiLog.DEBUG, 0x0, FormControllerManager.class.getName());
private static final String PACKAGE_PATH = "com.example.carddemo.widget";
private static final String SHARED_SP_NAME = "form_info_sp.xml";
private static final String FORM_NAME = "formName";
private static final String DIMENSION = "dimension";
private static FormControllerManager managerInstance = null;
private final HashMap<Long, FormController> controllerHashMap = new HashMap<>();
private final Context context;
private final Preferences preferences;
/**
* 初始化構(gòu)造器
*
* @param context instance of Context.
*/
private FormControllerManager(Context context) {
this.context = context;
DatabaseHelper databaseHelper = new DatabaseHelper(this.context.getApplicationContext());
preferences = databaseHelper.getPreferences(SHARED_SP_NAME);
}
/**
* FormControllerManager 實(shí)例化
*
* @param context instance of Context.
* @return FormControllerManager instance.
*/
public static FormControllerManager getInstance(Context context) {
if (managerInstance == null) {
synchronized (FormControllerManager.class) {
if (managerInstance == null) {
managerInstance = new FormControllerManager(context);
}
}
}
return managerInstance;
}
/**
* 通過構(gòu)造器將傳入的卡片信息進(jìn)行封裝，返回卡片服務(wù)
*
* @param formId form id.
* @param formName form name.
* @param dimension form dimension
* @return FormController form controller
*/
public FormController createFormController(long formId, String formName, int dimension) {
synchronized (controllerHashMap) {
if (formId < 0 || formName.isEmpty()) {
return null;
}
HiLog.info(TAG,
"saveFormId() formId: " + formId + ", formName: " + formName + ", preferences: " + preferences);
if (preferences != null) {
ZSONObject formObj = new ZSONObject();
formObj.put(FORM_NAME, formName);
formObj.put(DIMENSION, dimension);
preferences.putString(Long.toString(formId), ZSONObject.toZSONString(formObj));
preferences.flushSync();
}
// Create controller instance.
FormController controller = newInstance(formName, dimension, context);
// Cache the controller.
if (controller != null) {
if (!controllerHashMap.containsKey(formId)) {
controllerHashMap.put(formId, controller);
}
}
return controller;
}
}
/**
* 獲取卡片控制器實(shí)例
*
* @param formId form id.
* @return the instance of form controller.
*/
public FormController getController(long formId) {
synchronized (controllerHashMap) {
if (controllerHashMap.containsKey(formId)) {
return controllerHashMap.get(formId);
}
Map<String, ?> forms = preferences.getAll();
String formIdString = Long.toString(formId);
if (forms.containsKey(formIdString)) {
ZSONObject formObj = ZSONObject.stringToZSON((String) forms.get(formIdString));
String formName = formObj.getString(FORM_NAME);
int dimension = formObj.getIntValue(DIMENSION);
FormController controller = newInstance(formName, dimension, context);
controllerHashMap.put(formId, controller);
}
return controllerHashMap.get(formId);
}
}
private FormController newInstance(String formName, int dimension, Context context) {
FormController ctrInstance = null;
if (formName == null || formName.isEmpty()) {
HiLog.error(TAG, "newInstance() get empty form name");
return ctrInstance;
}
try {
String className = PACKAGE_PATH + "." + formName.toLowerCase(Locale.ROOT) + "."
+ getClassNameByFormName(formName);
Class<?> clazz = Class.forName(className);
if (clazz != null) {
Object controllerInstance = clazz.getConstructor(Context.class, String.class, Integer.class)
.newInstance(context, formName, dimension);
if (controllerInstance instanceof FormController) {
ctrInstance = (FormController) controllerInstance;
}
}
} catch (NoSuchMethodException | InstantiationException | IllegalArgumentException | InvocationTargetException
| IllegalAccessException | ClassNotFoundException | SecurityException exception) {
HiLog.error(TAG, "newInstance() get exception: " + exception.getMessage());
}
return ctrInstance;
}
/**
* 從數(shù)組中獲取所有卡片id
*
* @return form id list
*/
public List<Long> getAllFormIdFromSharePreference() {
List<Long> result = new ArrayList<>();
Map<String, ?> forms = preferences.getAll();
for (String formId : forms.keySet()) {
result.add(Long.parseLong(formId));
}
return result;
}
/**
* 刪除卡片服務(wù)
*
* @param formId form id
*/
public void deleteFormController(long formId) {
synchronized (controllerHashMap) {
preferences.delete(Long.toString(formId));
preferences.flushSync();
controllerHashMap.remove(formId);
}
}
private String getClassNameByFormName(String formName) {
String[] strings = formName.split("_");
StringBuilder result = new StringBuilder();
for (String string : strings) {
result.append(string);
}
char[] charResult = result.toString().toCharArray();
charResult[0] = (charResult[0] >= 'a' && charResult[0] <= 'z') ? (char) (charResult[0] - 32) : charResult[0];
return String.copyValueOf(charResult) + "Impl";
}
}
FormController.java（卡片控制器【卡片提供方】）
public abstract class FormController {
protected final Context context;
protected final String formName;
protected final int dimension;
public FormController(Context context, String formName, Integer dimension) {
this.context = context;
this.formName = formName;
this.dimension = dimension;
}
/**
* 創(chuàng)建卡片信息提供者
*/
public abstract ProviderFormInfo bindFormData();
/**
* 更新卡片信息
*/
public abstract void updateFormData(long formId, Object... vars);
/**
* 在接收服務(wù)小部件消息事件時(shí)調(diào)用
*/
public abstract void onTriggerFormEvent(long formId, String message);
/**
* 獲取路由的目標(biāo)界面
*/
public abstract Class<? extends AbilitySlice> getRoutePageSlice(Intent intent);
}
CardWidgetImpl.java（卡片應(yīng)用【卡片使用方】）
public class CardWidgetImpl extends FormController {
public static final int DIMENSION_1X2 = 1;
public static final int DIMENSION_2X4 = 3;
private static final HiLogLabel TAG = new HiLogLabel(HiLog.DEBUG, 0x0, CardWidgetImpl.class.getName());
private static final int DEFAULT_DIMENSION_2X2 = 2;
private static final Map<Integer, Integer> RESOURCE_ID_MAP = new HashMap<>();
static {
RESOURCE_ID_MAP.put(DIMENSION_1X2, ResourceTable.Layout_form_grid_pattern_cardwidget_1_2);
RESOURCE_ID_MAP.put(DEFAULT_DIMENSION_2X2, ResourceTable.Layout_form_grid_pattern_cardwidget_2_2);
RESOURCE_ID_MAP.put(DIMENSION_2X4, ResourceTable.Layout_form_grid_pattern_cardwidget_2_4);
}
public CardWidgetImpl(Context context, String formName, Integer dimension) {
super(context, formName, dimension);
}
//創(chuàng)建好卡片服務(wù)后，在界面展示卡片
@Override
public ProviderFormInfo bindFormData() {
HiLog.info(TAG, "bind form data when create form");
return new ProviderFormInfo(RESOURCE_ID_MAP.get(dimension), context);
}
//更新卡片信息
@Override
public void updateFormData(long formId, Object... vars) {
HiLog.info(TAG, "update form data timing, default 30 minutes");
}
//卡片中內(nèi)容手勢觸發(fā)方法
@Override
public void onTriggerFormEvent(long formId, String message) {
HiLog.info(TAG, "handle card click event.");
}
@Override
public Class<? extends AbilitySlice> getRoutePageSlice(Intent intent) {
HiLog.info(TAG, "get the default page to route when you click card.");
return null;
}
}
MainAbility的變化，新增了一些方法。
public class MainAbility extends Ability {
public static final int DEFAULT_DIMENSION_2X2 = 2;
public static final int DIMENSION_1X2 = 1;
public static final int DIMENSION_2X4 = 3;
public static final int DIMENSION_4X4 = 4;
private static final int INVALID_FORM_ID = -1;
private static final HiLogLabel TAG = new HiLogLabel(HiLog.DEBUG, 0x0, MainAbility.class.getName());
private String topWidgetSlice;
@Override
public void onStart(Intent intent) {
super.onStart(intent);
super.setMainRoute(MainAbilitySlice.class.getName());
if (intentFromWidget(intent)) {
topWidgetSlice = getRoutePageSlice(intent);
if (topWidgetSlice != null) {
setMainRoute(topWidgetSlice);
}
}
stopAbility(intent);
}
//創(chuàng)建卡片信息并返回卡片內(nèi)容
@Override
protected ProviderFormInfo onCreateForm(Intent intent) {
HiLog.info(TAG, "onCreateForm");
long formId = intent.getLongParam(AbilitySlice.PARAM_FORM_IDENTITY_KEY, INVALID_FORM_ID);
String formName = intent.getStringParam(AbilitySlice.PARAM_FORM_NAME_KEY);
int dimension = intent.getIntParam(AbilitySlice.PARAM_FORM_DIMENSION_KEY, DEFAULT_DIMENSION_2X2);
HiLog.info(TAG, "onCreateForm: formId=" + formId + ",formName=" + formName);
FormControllerManager formControllerManager = FormControllerManager.getInstance(this);
FormController formController = formControllerManager.getController(formId);
//通過調(diào)用布局Id將卡片布局與卡片信息進(jìn)行綁定
formController = (formController == null) ? formControllerManager.createFormController(formId,
formName, dimension) : formController;
if (formController == null) {
HiLog.error(TAG, "Get null controller. formId: " + formId + ", formName: " + formName);
return null;
}
return formController.bindFormData();
}
//更新卡片信息
@Override
protected void onUpdateForm(long formId) {
HiLog.info(TAG, "onUpdateForm");
super.onUpdateForm(formId);
FormControllerManager formControllerManager = FormControllerManager.getInstance(this);
FormController formController = formControllerManager.getController(formId);
formController.updateFormData(formId);
}
//刪除卡片
@Override
protected void onDeleteForm(long formId) {
HiLog.info(TAG, "onDeleteForm: formId=" + formId);
super.onDeleteForm(formId);
FormControllerManager formControllerManager = FormControllerManager.getInstance(this);
formControllerManager.deleteFormController(formId);
}
//卡片手勢觸發(fā)
@Override
protected void onTriggerFormEvent(long formId, String message) {
HiLog.info(TAG, "onTriggerFormEvent: " + message);
super.onTriggerFormEvent(formId, message);
FormControllerManager formControllerManager = FormControllerManager.getInstance(this);
FormController formController = formControllerManager.getController(formId);
formController.onTriggerFormEvent(formId, message);
}
@Override
public void onNewIntent(Intent intent) {
if (intentFromWidget(intent)) { // Only response to it when starting from a service widget.
String newWidgetSlice = getRoutePageSlice(intent);
if (topWidgetSlice == null || !topWidgetSlice.equals(newWidgetSlice)) {
topWidgetSlice = newWidgetSlice;
restart();
}
}
}
private boolean intentFromWidget(Intent intent) {
long formId = intent.getLongParam(AbilitySlice.PARAM_FORM_IDENTITY_KEY, INVALID_FORM_ID);
return formId != INVALID_FORM_ID;
}
//跳轉(zhuǎn)至對應(yīng)的卡片界面
private String getRoutePageSlice(Intent intent) {
long formId = intent.getLongParam(AbilitySlice.PARAM_FORM_IDENTITY_KEY, INVALID_FORM_ID);
if (formId == INVALID_FORM_ID) {
return null;
}
FormControllerManager formControllerManager = FormControllerManager.getInstance(this);
FormController formController = formControllerManager.getController(formId);
if (formController == null) {
return null;
}
Class<? extends AbilitySlice> clazz = formController.getRoutePageSlice(intent);
if (clazz == null) {
return null;
}
return clazz.getName();
}
}
配置文件
image
在這里插入圖片描述
第五步、編寫卡片界面
image
分別修改form_grid_pattern_cardwidget_1_2、form_grid_pattern_cardwidget_2_2.xml和form_grid_pattern_cardwidget_2_4.xml文件。
form_grid_pattern_cardwidget_1_2.xml
<?xml version="1.0" encoding="utf-8"?><DependentLayout
xmlns:ohos="http://schemas.huawei.com/res/ohos"
ohos:height="match_parent"
ohos:width="match_parent"
ohos:remote="true">
<Image
ohos:height="match_parent"
ohos:width="match_parent"
ohos:background_element="#1281f0"
ohos:scale\_mode="clip\_center"/>
<DirectionalLayout
ohos:height="match_parent"
ohos:width="match_parent"
ohos:alignment="center"
ohos:orientation="horizontal">
<Text
ohos:id="$+id:tv_name"
ohos:height="match_content"
ohos:width="match_content"
ohos:text="$string:cardwidget_title"
ohos:text_color="#E5FFFFFF"
ohos:text_size="16fp"
ohos:text_weight="1200"/>
<Text
ohos:height="match_content"
ohos:width="match_content"
ohos:text="3350"
ohos:text_color="#E5FFFFFF"
ohos:text_size="16fp"
ohos:text_weight="1200"/>
</DirectionalLayout></DependentLayout>
form_grid_pattern_cardwidget_2_2.xml
<?xml version="1.0" encoding="utf-8"?><DirectionalLayout
xmlns:ohos="http://schemas.huawei.com/res/ohos"
ohos:height="match_parent"
ohos:width="match_parent"
ohos:background_element="#FFFFFFFF"
ohos:remote="true"
ohos:orientation="vertical">
<DirectionalLayout
ohos:id="$+id:tv_top"
ohos:height="match_parent"
ohos:width="match_parent"
ohos:weight="1"
ohos:orientation="horizontal">
<DirectionalLayout
ohos:height="match_parent"
ohos:width="match_parent"
ohos:weight="1"
ohos:orientation="vertical"
ohos:alignment="center">
<Text
ohos:height="match_content"
ohos:width="match_content"
ohos:text="消耗熱量"
ohos:top_margin="5vp"
ohos:text_size="10fp"
ohos:text_weight="500">
</Text>
<Text
ohos:height="60vp"
ohos:width="60vp"
ohos:text="2.1 Kcal"
ohos:text_alignment="center"
ohos:text_color="#1281f0"
ohos:background\_element="$media:aa\_1"
ohos:text_size="10fp"
ohos:text_weight="500"/>
</DirectionalLayout>
<DirectionalLayout
ohos:height="match_parent"
ohos:width="match_parent"
ohos:weight="1"
ohos:orientation="vertical"
ohos:alignment="center">
<Text
ohos:height="match_content"
ohos:width="match_content"
ohos:text="實(shí)時(shí)心率"
ohos:top_margin="5vp"
ohos:text_size="10fp"
ohos:text_weight="500">
</Text>
<Text
ohos:height="60vp"
ohos:width="60vp"
ohos:text="99/min"
ohos:text_alignment="center"
ohos:text_color="#1281f0"
ohos:background\_element="$media:aa\_1"
ohos:text_size="10fp"
ohos:text_weight="500"/>
</DirectionalLayout>
</DirectionalLayout>
<DirectionalLayout
ohos:id="$+id:tv_blow"
ohos:height="60vp"
ohos:width="match_parent"
ohos:align\_parent\_bottom="true"
ohos:background_element="#1281f0"
ohos:alignment="center"
ohos:orientation="vertical">
<DirectionalLayout
ohos:height="match_content"
ohos:width="match_parent"
ohos:alignment="center"
ohos:orientation="horizontal">
<Text
ohos:id="$+id:tv_name"
ohos:height="match_content"
ohos:width="match_content"
ohos:text="$string:cardwidget_title"
ohos:text_color="#E5FFFFFF"
ohos:text_size="16fp"
ohos:text_weight="600"/>
<Text
ohos:height="match_content"
ohos:width="match_content"
ohos:text="3350"
ohos:text_color="#E5FFFFFF"
ohos:text_size="16fp"
ohos:text_weight="1000"/>
</DirectionalLayout>
<Text
ohos:height="match_content"
ohos:width="match_content"
ohos:text="$string:cardwidget_introduction"
ohos:text_color="#ffffff"
ohos:text_size="14fp"
ohos:text_weight="800"
ohos:top_margin="7vp"/>
</DirectionalLayout></DirectionalLayout>
form_grid_pattern_cardwidget_2_4.xml
<?xml version="1.0" encoding="utf-8"?><DirectionalLayout
xmlns:ohos="http://schemas.huawei.com/res/ohos"
ohos:height="match_parent"
ohos:width="match_parent"
ohos:background_element="#FFFFFFFF"
ohos:orientation="horizontal"
ohos:remote="true">
<DirectionalLayout
ohos:height="match_parent"
ohos:width="match_parent"
ohos:weight="1"
ohos:orientation="vertical">
<DirectionalLayout
ohos:height="match_parent"
ohos:width="match_parent"
ohos:weight="1"
ohos:orientation="horizontal">
<DirectionalLayout
ohos:height="match_parent"
ohos:width="match_parent"
ohos:weight="1"
ohos:orientation="vertical"
ohos:alignment="center">
<Text
ohos:height="match_content"
ohos:width="match_content"
ohos:text="消耗熱量"
ohos:top_margin="5vp"
ohos:text_size="10fp"
ohos:text_weight="500">
</Text>
<Text
ohos:height="60vp"
ohos:width="60vp"
ohos:text="2.1 Kcal"
ohos:text_alignment="center"
ohos:text_color="#1281f0"
ohos:background\_element="$media:aa\_1"
ohos:text_size="10fp"
ohos:text_weight="500"/>
</DirectionalLayout>
<DirectionalLayout
ohos:height="match_parent"
ohos:width="match_parent"
ohos:weight="1"
ohos:orientation="vertical"
ohos:alignment="center">
<Text
ohos:height="match_content"
ohos:width="match_content"
ohos:text="實(shí)時(shí)心率"
ohos:top_margin="5vp"
ohos:text_size="10fp"
ohos:text_weight="500">
</Text>
<Text
ohos:height="60vp"
ohos:width="60vp"
ohos:text="99/min"
ohos:text_alignment="center"
ohos:text_color="#1281f0"
ohos:background\_element="$media:aa\_1"
ohos:text_size="10fp"
ohos:text_weight="500"/>
</DirectionalLayout>
</DirectionalLayout>
<DirectionalLayout
ohos:height="60vp"
ohos:width="match_parent"
ohos:align\_parent\_bottom="true"
ohos:background_element="#1281f0"
ohos:alignment="center"
ohos:orientation="vertical">
<DirectionalLayout
ohos:height="match_content"
ohos:width="match_parent"
ohos:alignment="center"
ohos:orientation="horizontal">
<Text
ohos:height="match_content"
ohos:width="match_content"
ohos:text="$string:cardwidget_title"
ohos:text_color="#E5FFFFFF"
ohos:text_size="16fp"
ohos:text_weight="600"/>
<Text
ohos:height="match_content"
ohos:width="match_content"
ohos:text="3350"
ohos:text_color="#E5FFFFFF"
ohos:text_size="16fp"
ohos:text_weight="1000"/>
</DirectionalLayout>
<Text
ohos:height="match_content"
ohos:width="match_content"
ohos:text="$string:cardwidget_introduction"
ohos:text_color="#ffffff"
ohos:text_size="14fp"
ohos:text_weight="800"
ohos:top_margin="7vp"/>
</DirectionalLayout>
</DirectionalLayout>
<DirectionalLayout
ohos:height="match_parent"
ohos:width="match_parent"
ohos:weight="1">
</DirectionalLayout></DirectionalLayout>
第六步、運(yùn)行程序、查看效果
點(diǎn)擊圖標(biāo)上劃，出現(xiàn)卡片。
image
點(diǎn)擊右上角圖釘按鈕，將卡片放在屏幕中。
image
長按應(yīng)用，出現(xiàn)服務(wù)卡片。
image
點(diǎn)擊服務(wù)卡片選擇界面，上下滑動(dòng)可選擇卡片內(nèi)容。
image
點(diǎn)擊添加到桌面，則將卡片添加到桌面中。
image
至此，卡片服務(wù)應(yīng)用就以全部開發(fā)完成，后續(xù)會(huì)對卡片內(nèi)部進(jìn)行相關(guān)編寫。使其進(jìn)行動(dòng)態(tài)的刷新及動(dòng)態(tài)的獲取數(shù)據(jù)。
喜歡的請為作者點(diǎn)個(gè)喜歡或者贊賞~
