本來是在實(shí)驗(yàn)通過廣播來獲取系統(tǒng)狀態(tài)的功能的. 偶然間發(fā)現(xiàn)還有LocalBoardcast這個東西 -_- 真汗顏.
趕緊惡補(bǔ)一下..

摘自網(wǎng)絡(luò)博客:
在android-support-v4.jar中引入了LocalBroadcastManager，稱為局部通知管理器，這種通知的好處是安全性高，效率也高，適合局部通信，可以用來代替Handler更新UI

現(xiàn)在總結(jié)一下主要使用流程.(相當(dāng)簡單)
用代碼表示了.
(1) 設(shè)定一個廣播

private ConnectivityManager mConnectivityManager = null;
private NetworkInfo mNetworkInfo = null;

private BroadcastReceiver mNetworkBoardcastReceiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {

        if (intent == null) {
            return;
        }
//            Log.d(logTitle, "onReceive: some boardcast" + intent.toString());
        String action = intent.getAction();
        if (action.equals(ConnectivityManager.CONNECTIVITY_ACTION)) {
            mConnectivityManager = (ConnectivityManager) getSystemService(Context
                    .CONNECTIVITY_SERVICE);
            mNetworkInfo = mConnectivityManager.getActiveNetworkInfo();
            if (mNetworkInfo != null && mNetworkInfo.isAvailable()) {
                if (mNetworkInfo.getTypeName().equals("WIFI")) {
                    sendNetworkStateBoardcast(ACTION_CONNECTIONED);
                    Log.d(logTitle, "netstate to:" + mNetworkInfo.getTypeName());

                } else {
                    sendNetworkStateBoardcast(STATE_NETWORK_MOBILE);
                    Log.d(logTitle, "netstate to:" + mNetworkInfo.getTypeName());
                }

            } else {
                sendNetworkStateBoardcast(ACTION_NO_CONNECTION);
            }
        }
    }
};

private void sendNetworkStateBoardcast(String state) {
    Intent sendIntent = new Intent(state);  
    LocalBroadcastManager.getInstance(getApplicationContext()).sendBroadcast(sendIntent);
}

(2) 設(shè)定廣播接收器

public class BoardcastReceiverDetectSystemStatus extends BroadcastReceiver {
    Context currentContext;
    public BoardcastReceiverDetectSystemStatus() {
    }
    @Override
    public void onReceive(Context context, Intent intent) {
        Log.d("broadreveiver", "onReceive: intent is" + intent.toString());
    }
}

(3) activity內(nèi)設(shè)定本地廣播接收

        boardcastReceiverDetectSystemStatus = new BoardcastReceiverDetectSystemStatus(this);
        IntentFilter intentFilter = new IntentFilter();
        intentFilter.addAction(ServiceDetectSystemStatus.ACTION_CONNECTIONED);
        intentFilter.addAction(ServiceDetectSystemStatus.ACTION_NO_CONNECTION);
        LocalBroadcastManager.getInstance(this).registerReceiver(boardcastReceiverDetectSystemStatus, intentFilter);

以上就是三個主要步驟, 當(dāng)然, 后期可以根據(jù)需要進(jìn)行二次封裝以及改造. 去耦

官方文檔:
https://developer.android.com/reference/android/support/v4/content/LocalBroadcastManager.html