Android Broadcast 做的簡單封裝:
阿新 • • 發佈:2019-01-10
在開發過程中,突然發現廣播的使用非常的多,因此作出如下三步使用流程,並封裝一個BoradcastManager類:
1 、在任何地方傳送廣播
BroadcastManager.getInstance(mContext).sendBroadcast(FindOrderActivity.ACTION_RECEIVE_MESSAGE);
2、頁面在onCreate()中初始化廣播
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)){ //獲取json結果 String json = intent.getStringExtra("result"); //做你該做的事情 } } } });
3、頁面在ondestory銷燬廣播
BroadcastManager.getInstance(mContext).destroy(ACTION_RECEIVE_MESSAGE);
4、BroadcastManager的實現;
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:廣播管理者 * @author lidong on 2016/2/18. * @使用方法: * (1)在任何地方傳送廣播 * BroadcastManager.getInstance(mContext).sendBroadcast(FindOrderActivity.ACTION_RECEIVE_MESSAGE); * (2)頁面在onCreate()中初始化廣播 * 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)){ * //獲取json結果 * String json = intent.getStringExtra("result"); * //做你該做的事情 * } * } * } * }); * (3)頁面在ondestory銷燬廣播 * BroadcastManager.getInstance(mContext).destroy(ACTION_RECEIVE_MESSAGE); */ public class BroadcastManager { private Context mContext; private static BroadcastManager instance; private Map<String, BroadcastReceiver> receiverMap; /** * 構造方法 * * @param context */ private BroadcastManager(Context context) { this.mContext = context; receiverMap = new HashMap<String, BroadcastReceiver>(); } /** * [獲取BroadcastManager例項,單例模式實現] * * @param context * @return */ public static BroadcastManager getInstance(Context context) { if (instance == null) { synchronized (BroadcastManager.class) { if (instance == null) { instance = new BroadcastManager(context); } } } return instance; } /** * 新增Action,做廣播的初始化 * * @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(); } } /** * 新增Action,做廣播的初始化 * * @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(); } } /** * 傳送廣播 * * @param action 唯一碼 */ public void sendBroadcast(String action) { sendBroadcast(action, ""); } /** * 傳送廣播 * * @param action 唯一碼 * @param obj 引數 */ 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(); } } /** * 銷燬廣播 * @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()); } } }
基本上就這些了吧,歡迎大家提建議