简述

把工具类从广播知识点中抽离出来，可以更方便的帮助使用广播，同时加入安全相关的广播LocalBroadcastManager，更加灵活方便使用。

api

  1. registerBroadcastK    :注册广播
  2. unregisterBroadcastK:解除注册
  3. sendBroadcastK        :发送广播

源码

  1. public class BroadcastUtils {
  3.     /**
  4.      * 注册广播
  5.      *
  6.      * @param broadcastReceiver
  7.      * @param action
  8.      */
  9.     public static void registerBroadcast(BroadcastReceiver broadcastReceiver, String... action) {
  10.         registerBroadcast(PublicUtils.getContext(), broadcastReceiver, action);
  11.     }
  13.     /**
  14.      * 注册广播
  15.      *
  16.      * @param context
  17.      * @param broadcastReceiver
  18.      * @param action
  19.      */
  20.     public static void registerBroadcast(Context context, BroadcastReceiver broadcastReceiver, String... action) {
  21.         if (context == null || broadcastReceiver == null) return;
  22.         IntentFilter intentFilter = new IntentFilter();
  23.         for (String s : action) {
  24.             intentFilter.addAction(s);
  25.         }
  26.         LocalBroadcastManager.getInstance(context).registerReceiver(broadcastReceiver, intentFilter);
  27. //        context.registerReceiver(broadcastReceiver, intentFilter);
  28.     }
  30.     /**
  31.      * 解除注册广播，广播要和注册时是同一个
  32.      *
  33.      * @param broadcastReceiver
  34.      */
  35.     public static void unregisterBroadcast(BroadcastReceiver broadcastReceiver) {
  36.         unregisterBroadcast(PublicUtils.getContext(), broadcastReceiver);
  37.     }
  39.     /**
  40.      * 解除注册广播，广播要和注册时是同一个
  41.      *
  42.      * @param context
  43.      * @param broadcastReceiver
  44.      */
  45.     public static void unregisterBroadcast(Context context, BroadcastReceiver broadcastReceiver) {
  46.         if (context == null || broadcastReceiver == null) return;
  47.         LocalBroadcastManager.getInstance(context).unregisterReceiver(broadcastReceiver);
  48. //        context.unregisterReceiver(broadcastReceiver);
  49.     }
  52.     /**
  53.      * 发送广播
  54.      *
  55.      * @param action
  56.      */
  57.     @SafeVarargs
  58.     public static void sendBroadcast(String action, Pair<String, String>... pairs) {
  59.         sendBroadcast(PublicUtils.getContext(), action, pairs);
  60.     }
  62.     /**
  63.      * 发送广播
  64.      *
  65.      * @param context
  66.      * @param action
  67.      */
  68.     @SafeVarargs
  69.     public static <T> void sendBroadcast(Context context, String action, Pair<String, T>... pairs) {
  70.         if (context == null || TextUtils.isEmpty(action)) return;
  71.         Intent intent = new Intent(action);
  72.         if (pairs != null && pairs.length != 0) {
  73.             T second;
  74.             for (Pair<String, T> pair : pairs) {
  75.                 second = pair.second;
  76.                 if (second instanceof String) {
  77.                     intent.putExtra(pair.first, (String) second);
  78.                 } else if (second instanceof Integer) {
  79.                     intent.putExtra(pair.first, (Integer) second);
  80.                 } else if (second instanceof Long) {
  81.                     intent.putExtra(pair.first, (Long) second);
  82.                 } else if (second instanceof Double) {
  83.                     intent.putExtra(pair.first, (Double) second);
  84.                 } else if (second instanceof Serializable) {
  85.                     intent.putExtra(pair.first, (Serializable) second);
  86.                 }
  87.             }
  88.         }
  89.         LocalBroadcastManager.getInstance(context).sendBroadcast(intent);
  90. //        context.sendBroadcast(intent);
  91.     }
  93. }

参考

Android LocalBroadcastManager 的使用总结