第一個部分- XUtils框架2.0實現：事件注入、資源注入、儲存資料注入 1、注入事件 XUtils2.0框架實現
import android.app.Activity;
import android.preference.Preference;
import android.preference.PreferenceActivity;
import android.preference.PreferenceGroup;
import android.view.View;
import com.lidroid.xutils.util.LogUtils;
import com.lidroid.xutils.view.EventListenerManager;
import com.lidroid.xutils.view.ResLoader;
import com.lidroid.xutils.view.ViewFinder;
import com.lidroid.xutils.view.ViewInjectInfo;
import com.lidroid.xutils.view.annotation.ContentView;
import com.lidroid.xutils.view.annotation.PreferenceInject;
import com.lidroid.xutils.view.annotation.ResInject;
import com.lidroid.xutils.view.annotation.ViewInject;
import com.lidroid.xutils.view.annotation.event.EventBase;
import java.lang.annotation.Annotation;
import java.lang.reflect.Array;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
public class ViewUtils {
private ViewUtils() {
}
public static void inject(View view) {
injectObject(view, new ViewFinder(view));
}
public static void inject(Activity activity) {
injectObject(activity, new ViewFinder(activity));
}
public static void inject(PreferenceActivity preferenceActivity) {
injectObject(preferenceActivity, new ViewFinder(preferenceActivity));
}
public static void inject(Object handler, View view) {
injectObject(handler, new ViewFinder(view));
}
public static void inject(Object handler, Activity activity) {
injectObject(handler, new ViewFinder(activity));
}
public static void inject(Object handler, PreferenceGroup preferenceGroup) {
injectObject(handler, new ViewFinder(preferenceGroup));
}
public static void inject(Object handler, PreferenceActivity preferenceActivity) {
injectObject(handler, new ViewFinder(preferenceActivity));
}
@SuppressWarnings("ConstantConditions")
private static void injectObject(Object handler, ViewFinder finder) {
Class<?> handlerType = handler.getClass();
// inject ContentView
ContentView contentView = handlerType.getAnnotation(ContentView.class);
if (contentView != null) {
try {
Method setContentViewMethod = handlerType.getMethod("setContentView", int.class);
setContentViewMethod.invoke(handler, contentView.value());
} catch (Throwable e) {
LogUtils.e(e.getMessage(), e);
}
}
// inject view
Field[] fields = handlerType.getDeclaredFields();
if (fields != null && fields.length > 0) {
for (Field field : fields) {
ViewInject viewInject = field.getAnnotation(ViewInject.class);
if (viewInject != null) {
try {
View view = finder.findViewById(viewInject.value(), viewInject.parentId());
if (view != null) {
field.setAccessible(true);
field.set(handler, view);
}
} catch (Throwable e) {
LogUtils.e(e.getMessage(), e);
}
} else {
ResInject resInject = field.getAnnotation(ResInject.class);
if (resInject != null) {
try {
Object res = ResLoader.loadRes(
resInject.type(), finder.getContext(), resInject.id());
if (res != null) {
field.setAccessible(true);
field.set(handler, res);
}
} catch (Throwable e) {
LogUtils.e(e.getMessage(), e);
}
} else {
PreferenceInject preferenceInject = field.getAnnotation(PreferenceInject.class);
if (preferenceInject != null) {
try {
Preference preference = finder.findPreference(preferenceInject.value());
if (preference != null) {
field.setAccessible(true);
field.set(handler, preference);
}
} catch (Throwable e) {
LogUtils.e(e.getMessage(), e);
}
}
}
}
}
}
// inject event
Method[] methods = handlerType.getDeclaredMethods();
if (methods != null && methods.length > 0) {
for (Method method : methods) {
Annotation[] annotations = method.getDeclaredAnnotations();
//便利註解目的：為了獲取我們想要的註解物件
if (annotations != null && annotations.length > 0) {
for (Annotation annotation : annotations) {
//獲取註解型別
Class<?> annType = annotation.annotationType();
if (annType.getAnnotation(EventBase.class) != null) {
method.setAccessible(true);
try {
// ProGuard：-keep class * extends java.lang.annotation.Annotation { *; }
Method valueMethod = annType.getDeclaredMethod("value");
Method parentIdMethod = null;
try {
parentIdMethod = annType.getDeclaredMethod("parentId");
} catch (Throwable e) {
}
//獲取OnClick、OnLongClick......註解身上的value方法
//values說白了就是控制元件的id陣列
Object values = valueMethod.invoke(annotation);
Object parentIds = parentIdMethod == null ? null : parentIdMethod.invoke(annotation);
int parentIdsLen = parentIds == null ? 0 : Array.getLength(parentIds);
//獲取陣列長度
int len = Array.getLength(values);
//遍歷id陣列
for (int i = 0; i < len; i++) {
ViewInjectInfo info = new ViewInjectInfo();
//獲取陣列中試圖的id(一個的id)
info.value = Array.get(values, i);
info.parentId = parentIdsLen > i ? (Integer) Array.get(parentIds, i) : 0;
EventListenerManager.addEventMethod(finder, info, annotation, handler, method);
}
} catch (Throwable e) {
LogUtils.e(e.getMessage(), e);
}
}
}
}
}
}
}
}
複製程式碼繫結事件（通過動態代理實現） EventListenerManager.Java
import android.view.View;
import com.lidroid.xutils.util.LogUtils;
import com.lidroid.xutils.util.DoubleKeyValueMap;
import com.lidroid.xutils.view.annotation.event.EventBase;
import java.lang.annotation.Annotation;
import java.lang.ref.WeakReference;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.util.HashMap;
public class EventListenerManager {
private EventListenerManager() {
}
/**
* k1: viewInjectInfo
* k2: interface Type
* value: listener
*/
private final static DoubleKeyValueMap<ViewInjectInfo, Class<?>, Object> listenerCache =
new DoubleKeyValueMap<ViewInjectInfo, Class<?>, Object>();
public static void addEventMethod(
ViewFinder finder,
ViewInjectInfo info,
Annotation eventAnnotation,
Object handler,
Method method) {
try {
View view = finder.findViewByInfo(info);
if (view != null) {
EventBase eventBase = eventAnnotation.annotationType().getAnnotation(EventBase.class);
//監聽型別：OnClickListener、OnTouchListener、OnLongClickListener......
Class<?> listenerType = eventBase.listenerType();
//事件源（你要給那個View繫結監聽，而且該監聽對應的方法）
//View.setOnClickListener() View.setOnTouchListener view.setOnLongClickListener
String listenerSetter = eventBase.listenerSetter();
//監聽方法：onClick方法、onTouch方法、onLongClick方法
String methodName = eventBase.methodName();
//addNewMethod該屬性作用：控制是否需要建立代理物件，如果快取存在，我們不需要建立，不存在則建立
//false：代表建立 true：代表不建立
boolean addNewMethod = false;
//從快取中獲取提高了效能、節約了效能
Object listener = listenerCache.get(info, listenerType);
DynamicHandler dynamicHandler = null;
if (listener != null) {
dynamicHandler = (DynamicHandler) Proxy.getInvocationHandler(listener);
addNewMethod = handler.equals(dynamicHandler.getHandler());
if (addNewMethod) {
dynamicHandler.addMethod(methodName, method);
}
}
if (!addNewMethod) {
//第一次新增監聽
dynamicHandler = new DynamicHandler(handler);
dynamicHandler.addMethod(methodName, method);
//listener:代理物件
listener = Proxy.newProxyInstance(
listenerType.getClassLoader(),
new Class<?>[]{listenerType},
dynamicHandler);
//快取
listenerCache.put(info, listenerType, listener);
}
//繫結監聽
Method setEventListenerMethod = view.getClass().getMethod(listenerSetter, listenerType);
setEventListenerMethod.invoke(view, listener);
}
} catch (Throwable e) {
LogUtils.e(e.getMessage(), e);
}
}
//WeakReference？為什麼？
//第一點：及時清理記憶體
//第二點：Activity很有可能會被意外釋放(意外關閉，而這個時候你剛好執行程式碼到了控制元件的載入)
//新增弱引用目的：為了防止物件意外被釋放關閉而產生異常（典型：空指標異常）
public static class DynamicHandler implements InvocationHandler {
private WeakReference<Object> handlerRef;
private final HashMap<String, Method> methodMap = new HashMap<String, Method>(1);
//動態代理 持有目標物件：代表Activity或者Fragment
public DynamicHandler(Object handler) {
this.handlerRef = new WeakReference<Object>(handler);
}
public void addMethod(String name, Method method) {
methodMap.put(name, method);
}
public Object getHandler() {
return handlerRef.get();
}
public void setHandler(Object handler) {
this.handlerRef = new WeakReference<Object>(handler);
}
@Override
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
Object handler = handlerRef.get();
if (handler != null) {
String methodName = method.getName();
method = methodMap.get(methodName);
//目的：確定代理需要的方法
if (method != null) {
return method.invoke(handler, args);
}
}
return null;
}
}
}
複製程式碼ViewInjectInfo類作用儲存控制元件id類 將來我要擴充套件該類的屬性 控制功能邏輯
public class ViewInjectInfo {
public Object value;
public int parentId;
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (!(o instanceof ViewInjectInfo)) return false;
ViewInjectInfo that = (ViewInjectInfo) o;
if (parentId != that.parentId) return false;
if (value == null) return (null == that.value);
return value.equals(that.value);
}
@Override
public int hashCode() {
int result = value.hashCode();
result = 31 * result + parentId;
return result;
}
}
複製程式碼2.優化一下 優化第一步：設定方法訪問許可權：method.setAccessible(true); 允許訪問 private形式 優化第二步：快取優化
缺陷：註解類過於龐大。 框架變得越來越臃腫 第二個部分：XUtils框架3.0實現核心架構原理：整體架構做了重寫 就一個模組進行分析(ViewUtils模組) 問題：我們Android有多少個監聽，你就要定義多少個註解類？（XUtils2.0實現） 2.0註解類過於龐大。 框架變得越來越臃腫
XUtils3.0之後整體架構大的改進和升級
複製程式碼四大介面模組都通過簡單工廠類獲取，同受採用了靜態內部類單例模式
package org.xutils;
import android.app.Application;
import android.content.Context;
import org.xutils.common.TaskController;
import org.xutils.common.task.TaskControllerImpl;
import org.xutils.db.DbManagerImpl;
import org.xutils.http.HttpManagerImpl;
import org.xutils.image.ImageManagerImpl;
import org.xutils.view.ViewInjectorImpl;
import java.lang.reflect.Method;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
/**
* Created by wyouflf on 15/6/10.
* 任務控制中心, http, image, db, view注入等介面的入口.
* 需要在在application的onCreate中初始化: x.Ext.init(this);
*/
public final class x {
private x() {
}
public static boolean isDebug() {
return Ext.debug;
}
public static Application app() {
if (Ext.app == null) {
try {
// 在IDE進行佈局預覽時使用
Class<?> renderActionClass = Class.forName("com.android.layoutlib.bridge.impl.RenderAction");
Method method = renderActionClass.getDeclaredMethod("getCurrentContext");
Context context = (Context) method.invoke(null);
Ext.app = new MockApplication(context);
} catch (Throwable ignored) {
throw new RuntimeException("please invoke x.Ext.init(app) on Application#onCreate()"
+ " and register your Application in manifest.");
}
}
return Ext.app;
}
public static TaskController task() {
return Ext.taskController;
}
public static HttpManager http() {
if (Ext.httpManager == null) {
HttpManagerImpl.registerInstance();
}
return Ext.httpManager;
}
public static ImageManager image() {
if (Ext.imageManager == null) {
ImageManagerImpl.registerInstance();
}
return Ext.imageManager;
}
public static ViewInjector view() {
if (Ext.viewInjector == null) {
ViewInjectorImpl.registerInstance();
}
return Ext.viewInjector;
}
public static DbManager getDb(DbManager.DaoConfig daoConfig) {
return DbManagerImpl.getInstance(daoConfig);
}
//靜態內部類單例模式
public static class Ext {
private static boolean debug;
private static Application app;
private static TaskController taskController;
private static HttpManager httpManager;
private static ImageManager imageManager;
private static ViewInjector viewInjector;
private Ext() {
}
public static void init(Application app) {
TaskControllerImpl.registerInstance();
if (Ext.app == null) {
Ext.app = app;
}
}
public static void setDebug(boolean debug) {
Ext.debug = debug;
}
public static void setTaskController(TaskController taskController) {
if (Ext.taskController == null) {
Ext.taskController = taskController;
}
}
public static void setHttpManager(HttpManager httpManager) {
Ext.httpManager = httpManager;
}
public static void setImageManager(ImageManager imageManager) {
Ext.imageManager = imageManager;
}
public static void setViewInjector(ViewInjector viewInjector) {
Ext.viewInjector = viewInjector;
}
public static void setDefaultHostnameVerifier(HostnameVerifier hostnameVerifier) {
HttpsURLConnection.setDefaultHostnameVerifier(hostnameVerifier);
}
}
private static class MockApplication extends Application {
public MockApplication(Context baseContext) {
this.attachBaseContext(baseContext);
}
}
}
複製程式碼ViewUtils模組為例： 第一個優化改進：整體架構（採用面向介面程式設計 同時採用了一些設計模式） 第二個優化改進：ViewUtils事件註解結構類進行了改進（由使用者配置） 將所有註解事件進行了合併，有使用者指定對應的監聽 預設是OnClickListener監聽 效能提高了（之前是巢狀迴圈）
ViewInjectorImpl.java
/*
* Copyright (c) 2013. wyouflf (wyouflf@gmail.com)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.xutils.view;
import android.app.Activity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import org.xutils.ViewInjector;
import org.xutils.common.util.LogUtil;
import org.xutils.view.annotation.ContentView;
import org.xutils.view.annotation.Event;
import org.xutils.view.annotation.ViewInject;
import org.xutils.x;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.HashSet;
public final class ViewInjectorImpl implements ViewInjector {
private static final HashSet<Class<?>> IGNORED = new HashSet<Class<?>>();
static {
IGNORED.add(Object.class);
IGNORED.add(Activity.class);
IGNORED.add(android.app.Fragment.class);
try {
IGNORED.add(Class.forName("android.support.v4.app.Fragment"));
IGNORED.add(Class.forName("android.support.v4.app.FragmentActivity"));
} catch (Throwable ignored) {
}
}
private static final Object lock = new Object();
private static volatile ViewInjectorImpl instance;
private ViewInjectorImpl() {
}
public static void registerInstance() {
if (instance == null) {
synchronized (lock) {
if (instance == null) {
instance = new ViewInjectorImpl();
}
}
}
x.Ext.setViewInjector(instance);
}
@Override
public void inject(View view) {
injectObject(view, view.getClass(), new ViewFinder(view));
}
@Override
public void inject(Activity activity) {
//獲取Activity的ContentView的註解
Class<?> handlerType = activity.getClass();
try {
ContentView contentView = findContentView(handlerType);
if (contentView != null) {
int viewId = contentView.value();
if (viewId > 0) {
Method setContentViewMethod = handlerType.getMethod("setContentView", int.class);
setContentViewMethod.invoke(activity, viewId);
}
}
} catch (Throwable ex) {
LogUtil.e(ex.getMessage(), ex);
}
injectObject(activity, handlerType, new ViewFinder(activity));
}
@Override
public void inject(Object handler, View view) {
injectObject(handler, handler.getClass(), new ViewFinder(view));
}
@Override
public View inject(Object fragment, LayoutInflater inflater, ViewGroup container) {
// inject ContentView
View view = null;
Class<?> handlerType = fragment.getClass();
try {
ContentView contentView = findContentView(handlerType);
if (contentView != null) {
int viewId = contentView.value();
if (viewId > 0) {
view = inflater.inflate(viewId, container, false);
}
}
} catch (Throwable ex) {
LogUtil.e(ex.getMessage(), ex);
}
// inject res & event
injectObject(fragment, handlerType, new ViewFinder(view));
return view;
}
/**
* 從父類獲取註解View
*/
private static ContentView findContentView(Class<?> thisCls) {
if (thisCls == null || IGNORED.contains(thisCls)) {
return null;
}
ContentView contentView = thisCls.getAnnotation(ContentView.class);
if (contentView == null) {
return findContentView(thisCls.getSuperclass());
}
return contentView;
}
@SuppressWarnings("ConstantConditions")
private static void injectObject(Object handler, Class<?> handlerType, ViewFinder finder) {
if (handlerType == null || IGNORED.contains(handlerType)) {
return;
}
// 從父類到子類遞迴
injectObject(handler, handlerType.getSuperclass(), finder);
// inject view
Field[] fields = handlerType.getDeclaredFields();
if (fields != null && fields.length > 0) {
for (Field field : fields) {
Class<?> fieldType = field.getType();
if (
/* 不注入靜態欄位 */ Modifier.isStatic(field.getModifiers()) ||
/* 不注入final欄位 */ Modifier.isFinal(field.getModifiers()) ||
/* 不注入基本型別欄位 */ fieldType.isPrimitive() ||
/* 不注入陣列型別欄位 */ fieldType.isArray()) {
continue;
}
ViewInject viewInject = field.getAnnotation(ViewInject.class);
if (viewInject != null) {
try {
View view = finder.findViewById(viewInject.value(), viewInject.parentId());
if (view != null) {
field.setAccessible(true);
field.set(handler, view);
} else {
throw new RuntimeException("Invalid @ViewInject for "
+ handlerType.getSimpleName() + "." + field.getName());
}
} catch (Throwable ex) {
LogUtil.e(ex.getMessage(), ex);
}
}
}
} // end inject view
// inject event
Method[] methods = handlerType.getDeclaredMethods();
if (methods != null && methods.length > 0) {
for (Method method : methods) {
//注意：靜態方法不允許新增控制元件註解，私有方法允許訪問，非私有方法不允許訪問
if (Modifier.isStatic(method.getModifiers())
|| !Modifier.isPrivate(method.getModifiers())) {
continue;
}
//檢查當前方法是否是event註解的方法
Event event = method.getAnnotation(Event.class);
if (event != null) {
try {
// id引數
int[] values = event.value();
int[] parentIds = event.parentId();
int parentIdsLen = parentIds == null ? 0 : parentIds.length;
//迴圈所有id，生成ViewInfo並新增代理反射
for (int i = 0; i < values.length; i++) {
int value = values[i];
if (value > 0) {
ViewInfo info = new ViewInfo();
info.value = value;
info.parentId = parentIdsLen > i ? parentIds[i] : 0;
method.setAccessible(true);
EventListenerManager.addEventMethod(finder, info, event, handler, method);
}
}
} catch (Throwable ex) {
LogUtil.e(ex.getMessage(), ex);
}
}
}
} // end inject event
}
}
複製程式碼在xUtils框架3.0之後，要求我們的方法必須是私有方法（注意：public不行） 讓註解方法只屬於當前類
//注意：靜態方法不允許新增控制元件註解，私有方法允許訪問，非私有方法不允許訪問
if (Modifier.isStatic(method.getModifiers())
|| !Modifier.isPrivate(method.getModifiers())) {
continue;
}
複製程式碼/*
* Copyright (c) 2013. wyouflf (wyouflf@gmail.com)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.xutils.view;
import android.text.TextUtils;
import android.view.View;
import org.xutils.common.util.DoubleKeyValueMap;
import org.xutils.common.util.LogUtil;
import org.xutils.view.annotation.Event;
import java.lang.ref.WeakReference;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
/*package*/ final class EventListenerManager {
private final static long QUICK_EVENT_TIME_SPAN = 300;
private final static HashSet<String> AVOID_QUICK_EVENT_SET = new HashSet<String>(2);
static {
AVOID_QUICK_EVENT_SET.add("onClick");
AVOID_QUICK_EVENT_SET.add("onItemClick");
}
private EventListenerManager() {
}
/**
* k1: viewInjectInfo
* k2: interface Type
* value: listener
*/
private final static DoubleKeyValueMap<ViewInfo, Class<?>, Object>
listenerCache = new DoubleKeyValueMap<ViewInfo, Class<?>, Object>();
public static void addEventMethod(
//根據頁面或view holder生成的ViewFinder
ViewFinder finder,
//根據當前註解ID生成的ViewInfo
ViewInfo info,
//註解物件
Event event,
//頁面或view holder物件
Object handler,
//當前註解方法
Method method) {
try {
View view = finder.findViewByInfo(info);
if (view != null) {
// 註解中定義的介面，比如Event註解預設的介面為View.OnClickListener
Class<?> listenerType = event.type();
// 預設為空，註解介面對應的Set方法，比如setOnClickListener方法
String listenerSetter = event.setter();
if (TextUtils.isEmpty(listenerSetter)) {
listenerSetter = "set" + listenerType.getSimpleName();
}
String methodName = event.method();
boolean addNewMethod = false;
/*
根據View的ID和當前的介面型別獲取已經快取的介面例項物件，
比如根據View.id和View.OnClickListener.class兩個鍵獲取這個View的OnClickListener物件
*/
Object listener = listenerCache.get(info, listenerType);
DynamicHandler dynamicHandler = null;
/*
如果介面例項物件不為空
獲取介面物件對應的動態代理物件
如果動態代理物件的handler和當前handler相同
則為動態代理物件新增代理方法
*/
if (listener != null) {
dynamicHandler = (DynamicHandler) Proxy.getInvocationHandler(listener);
addNewMethod = handler.equals(dynamicHandler.getHandler());
if (addNewMethod) {
dynamicHandler.addMethod(methodName, method);
}
}
// 如果還沒有註冊此代理
if (!addNewMethod) {
dynamicHandler = new DynamicHandler(handler);
dynamicHandler.addMethod(methodName, method);
// 生成的代理物件例項，比如View.OnClickListener的例項物件
listener = Proxy.newProxyInstance(
listenerType.getClassLoader(),
new Class<?>[]{listenerType},
dynamicHandler);
listenerCache.put(info, listenerType, listener);
}
Method setEventListenerMethod = view.getClass().getMethod(listenerSetter, listenerType);
setEventListenerMethod.invoke(view, listener);
}
} catch (Throwable ex) {
LogUtil.e(ex.getMessage(), ex);
}
}
public static class DynamicHandler implements InvocationHandler {
// 存放代理物件，比如Fragment或view holder
private WeakReference<Object> handlerRef;
// 存放代理方法
private final HashMap<String, Method> methodMap = new HashMap<String, Method>(1);
private static long lastClickTime = 0;
public DynamicHandler(Object handler) {
this.handlerRef = new WeakReference<Object>(handler);
}
public void addMethod(String name, Method method) {
methodMap.put(name, method);
}
public Object getHandler() {
return handlerRef.get();
}
@Override
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
Object handler = handlerRef.get();
if (handler != null) {
String eventMethod = method.getName();
if ("toString".equals(eventMethod)) {
return DynamicHandler.class.getSimpleName();
}
method = methodMap.get(eventMethod);
if (method == null && methodMap.size() == 1) {
for (Map.Entry<String, Method> entry : methodMap.entrySet()) {
if (TextUtils.isEmpty(entry.getKey())) {
method = entry.getValue();
}
break;
}
}
if (method != null) {
if (AVOID_QUICK_EVENT_SET.contains(eventMethod)) {
long timeSpan = System.currentTimeMillis() - lastClickTime;
if (timeSpan < QUICK_EVENT_TIME_SPAN) {
LogUtil.d("onClick cancelled: " + timeSpan);
return null;
}
lastClickTime = System.currentTimeMillis();
}
try {
return method.invoke(handler, args);
} catch (Throwable ex) {
throw new RuntimeException("invoke method error:" +
handler.getClass().getName() + "#" + method.getName(), ex);
}
} else {
LogUtil.w("method not impl: " + eventMethod + "(" + handler.getClass().getSimpleName() + ")");
}
}
return null;
}
}
}
複製程式碼簡化Activity中得監聽事件語句 // 註解中定義的介面，比如Event註解預設的介面為View.OnClickListener Class<?> listenerType = event.type(); // 預設為空，註解介面對應的Set方法，比如setOnClickListener方法 String listenerSetter = event.setter(); if (TextUtils.isEmpty(listenerSetter)) { listenerSetter = "set" + listenerType.getSimpleName(); } 否則 我們要在Activity中這麼寫
@Event(listenerType = View.OnTouchListener.class, callbackMethod = "onTouch",listenerSetter = "setOnTouchListener",value={R.id.tv_title})
private boolean touch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
Toast.makeText(this, "觸控按下!", Toast.LENGTH_LONG).show();
break;
default:
break;
}
return true;
}
複製程式碼