网站导航作用,云南省住房和城乡建设厅网站,做关键词搜索的网站,网站建设合同 域名平常我们开发的时候需要使用到动态注册广播#xff0c;如果在一个类内注册很多的广播代码就会既冗余又乱糟糟的#xff0c;就像这样#xff1a; msgReceiver new NewMessageBroadcastReceiver();IntentFilter intentFilter new IntentFilter(EMChatManager.getInstance().…平常我们开发的时候需要使用到动态注册广播如果在一个类内注册很多的广播代码就会既冗余又乱糟糟的就像这样 msgReceiver new NewMessageBroadcastReceiver();IntentFilter intentFilter new IntentFilter(EMChatManager.getInstance().getNewMessageBroadcastAction());registerReceiver(msgReceiver, intentFilter);IntentFilter ackMessageIntentFilter new IntentFilter(EMChatManager.getInstance().getAckMessageBroadcastAction());registerReceiver(ackMessageReceiver, ackMessageIntentFilter);IntentFilter cmdMessageIntentFilter new IntentFilter(EMChatManager.getInstance().getCmdMessageBroadcastAction());registerReceiver(cmdMessageReceiver, cmdMessageIntentFilter);
newMessageBroadcastReceiver new NewMessageTipBroadcastReceiver();IntentFilter filter new IntentFilter(StringConstants.NewMessageBroadcastReceiver);filter.addCategory(Intent.CATEGORY_DEFAULT);registerReceiver(newMessageBroadcastReceiver, filter);disTipBroadcastReceiver new DisTipBroadcastReceiver();filter new IntentFilter(StringConstants.DisTipBroadcastReceiver);filter.addCategory(Intent.CATEGORY_DEFAULT);registerReceiver(disTipBroadcastReceiver, filter);上面是我们的注册部分除了我们需要将广播的引用升级为类的成员之外我们还需要添加解注代码就像下面这样if (newMessageBroadcastReceiver ! null) {unregisterReceiver(newMessageBroadcastReceiver);}if (disTipBroadcastReceiver ! null) {unregisterReceiver(disTipBroadcastReceiver);}if (mJPushReceiver ! null) {unregisterReceiver(mJPushReceiver);}if (newMessageBroadcastReciver ! null) {unregisterReceiver(newMessageBroadcastReciver);}if (newTeacherMessageBroadcastReciver ! null) {unregisterReceiver(newTeacherMessageBroadcastReciver);}if (newMessageUserCenterBroadcastReciver ! null) {unregisterReceiver(newMessageUserCenterBroadcastReciver);}if (mUIRefreshReceiver ! null) {unregisterReceiver(mUIRefreshReceiver);}所以我们需要一种极为简便的工具来完成这些工作让我们开发的时候不用去关心那么多不重要的东西package com.sahadev.commontools;import java.util.Map;import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.support.v4.util.ArrayMap;/*** 广播注册解注工具* * author Sahadev**/
public class RegisterReceiverUtils {private static MapClass?, BroadcastReceiver MAPS new ArrayMapClass?, BroadcastReceiver();/*** param context* param broadcastReceiverClass* param action*/public static void registerBroadcastReceiver(Context context, Class? broadcastReceiverClass, String action) {IntentFilter filter new IntentFilter(action);filter.addCategory(Intent.CATEGORY_DEFAULT);try {BroadcastReceiver broadcastReceiver (BroadcastReceiver) broadcastReceiverClass.newInstance();if (broadcastReceiver ! null) {MAPS.put(broadcastReceiverClass, broadcastReceiver);context.registerReceiver(broadcastReceiver, filter);}} catch (InstantiationException e) {e.printStackTrace();} catch (IllegalAccessException e) {e.printStackTrace();}}public static void unregisterBroadcastReceiver(Context context, Class? broadcastReceiverClass) {BroadcastReceiver broadcastReceiver MAPS.get(broadcastReceiverClass);context.unregisterReceiver(broadcastReceiver);MAPS.remove(broadcastReceiverClass);}}上面这个工具只是简单的对注册解注做了简单的封装如果可以我们可以开放开启与关闭方法与Activity这样的组件的创建销毁方法进行关联以达到我们更简便的目的。
