Android Broadcast 做的简单封装：

来源：互联网发布：const javascript 编辑：程序博客网时间：2024/05/01 03:13

在开发过程中，突然发现广播的使用非常的多，因此作出如下三步使用流程，并封装一个BoradcastManager类：

1 、在任何地方发送广播

BroadcastManager.getInstance(mContext).sendBroadcast(FindOrderActivity.ACTION_RECEIVE_MESSAGE);

2、页面在onCreate()中初始化广播

BroadcastManager.getInstance(mContext).addAction(ACTION_RECEIVE_MESSAGE, new BroadcastReceiver(){ @Override public void onReceive(Context arg0, Intent intent) {  String command = intent.getAction(); if(!TextUtils.isEmpty(command)){  if((ACTION_RECEIVE_MESSAGE).equals(command)){  //获取json结果  String json = intent.getStringExtra("result");  //做你该做的事情  }  } } });

3、页面在ondestory销毁广播

BroadcastManager.getInstance(mContext).destroy(ACTION_RECEIVE_MESSAGE);

4、BroadcastManager的实现;

import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.content.IntentFilter;import com.chni.hms_library.util.Log;import java.util.HashMap;import java.util.Map;/** * @ClassName：BroadcastManager * @描述:广播管理者 * @author lidong on 2016/2/18. * @使用方法： * （1）在任何地方发送广播 * BroadcastManager.getInstance(mContext).sendBroadcast(FindOrderActivity.ACTION_RECEIVE_MESSAGE); * （2）页面在onCreate()中初始化广播 * BroadcastManager.getInstance(mContext).addAction(ACTION_RECEIVE_MESSAGE, new BroadcastReceiver(){ * @Override * public void onReceive(Context arg0, Intent intent) { * String command = intent.getAction(); * if(!TextUtils.isEmpty(command)){ * if((ACTION_RECEIVE_MESSAGE).equals(command)){ * //获取json结果 * String json = intent.getStringExtra("result"); * //做你该做的事情 * } * } * } * }); * (3)页面在ondestory销毁广播 * BroadcastManager.getInstance(mContext).destroy(ACTION_RECEIVE_MESSAGE); */public class BroadcastManager {    private Context mContext;    private static BroadcastManager instance;    private Map<String, BroadcastReceiver> receiverMap;    /**     * 构造方法     *     * @param context     */    private BroadcastManager(Context context) {        this.mContext = context;        receiverMap = new HashMap<String, BroadcastReceiver>();    }    /**     * [获取BroadcastManager实例，单例模式实现]     *     * @param context     * @return     */    public static BroadcastManager getInstance(Context context) {        if (instance == null) {            synchronized (BroadcastManager.class) {                if (instance == null) {                    instance = new BroadcastManager(context);                }            }        }        return instance;    }    /**     * 添加Action,做广播的初始化     *     * @param     */    public void addAction(String action, BroadcastReceiver receiver) {        try {            IntentFilter filter = new IntentFilter();            filter.addAction(action);            mContext.registerReceiver(receiver, filter);            receiverMap.put(action, receiver);        } catch (Exception e) {            e.printStackTrace();        }    }    /**     * 添加Action,做广播的初始化     *     * @param     */    public void addAction(String[] actions, BroadcastReceiver receiver) {        try {            IntentFilter filter = new IntentFilter();            for(String action:actions){                filter.addAction(action);            }            mContext.registerReceiver(receiver, filter);            for(String action:actions) {                receiverMap.put(action, receiver);            }        } catch (Exception e) {            e.printStackTrace();        }    }    /**     * 发送广播     *     * @param action 唯一码     */    public void sendBroadcast(String action) {        sendBroadcast(action, "");    }    /**     * 发送广播     *     * @param action 唯一码     * @param obj    参数     */    public void sendBroadcast(String action, Object obj) {        try {            Intent intent = new Intent();            intent.setAction(action);            intent.putExtra("result", obj.toString());            mContext.sendBroadcast(intent);        } catch (Exception e) {            e.printStackTrace();        }    }    /**     * 销毁广播     * @param actions     */    public void destroy(String... actions) {        try {            if (receiverMap != null) {                for(String action:actions){                    BroadcastReceiver receiver = receiverMap.get(action);                    if (receiver != null) {                        mContext.unregisterReceiver(receiver);                    }                }            }        } catch (IllegalArgumentException e){            Log.d("Broadcastmanager",e.toString());        }    }}

基本上就这些了吧，欢迎大家提建议

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