Android 广播介绍与service一起使用案例

1、案例

定义广播，注册广播，发送广播，最后注销广播

1.1、定义广播

    private BroadcastReceiver scanReceiver = new BroadcastReceiver(){
        @Override
        public void onReceive(Context context, Intent intent) {if (intent.getAction().equals(BARCODE_ACTION)) {
                String data = intent.getStringExtra(BARCODE_ACTION_DATA);
                Log.e("MainActivity", "---------------------data-------------"+data);
                if(data!=null){
                    setText(data);
                    manager.stopBarcodeScan();
                }
            }
        }
    };

1.2、注册广播

    //注册广播接收器
        IntentFilter intentFilter=new IntentFilter();              
        intentFilter.addAction("com.example.rfid_sdk_as.receiver.action");
        registerReceiver(scanReceiver,intentFilter);

1.3、发送广播

 Intent intent = new Intent(BARCODE_ACTION);
 sendBroadcast(intent);

1.4、注销广播

 if(scanReceiver!=null){
      unregisterReceiver(scanReceiver);
  }

2、广播与service一起使用

2.1、定义广播

package com.example.rfid_sdk_as;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.RemoteException;
import android.util.Log;

import com.hyc.api.DeviceManagement;

public class BarCodeReceiver extends BroadcastReceiver {

    public static final String RECEIVER_ACTION = "com.android.server.scannerservice.broadcastbl";

    private DeviceManagement deviceManagement;

    private  BarCodeReceiver receiver;

    public void setDeviceManagement(DeviceManagement deviceManagement){
        this.deviceManagement =  deviceManagement;
    }

    public void setReceiver(BarCodeReceiver receiver){
        this.receiver = receiver;

    }
    @Override
    public void onReceive(final Context context, final Intent intent) {
        Log.e("MainActivity", "---------------------接收到广播-------------");
        String action = intent.getAction();
        if (RECEIVER_ACTION.equals(action)) {
            String data = intent.getStringExtra("scannerdata");
            Log.e("MainActivity", "-------------------data=" + data);
            if(deviceManagement!=null){
                BarCodeData.Stub barCodeData = new BarCodeData.Stub() {
                    @Override
                    public void GetBarCodeData(String msg, String data) throws RemoteException {
                        Log.e("MainActivity", "扫描状态：" + msg + "\t扫描数据：" + data);
                        intent.putExtra("scannerdata",data);
                        context.sendBroadcast(intent);
                    }
                };
                deviceManagement.startBarcodeScan(barCodeData);
            }
        }
    }
}

2.2、创建service

package com.example.rfid_sdk_as;

import android.app.Service;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.os.IBinder;
import android.os.Message;
import android.os.RemoteException;
import android.support.annotation.Nullable;
import android.util.Log;

import com.hyc.api.DeviceManagement;
import com.hyc.bean.RFIDData;
import com.hyc.bean.TagData;

import java.util.List;


public class APPService  extends Service {

    private static final String TAG = "ServerService";
    private DeviceManagement deviceManagement = null;
    BarCodeReceiver receiver = null;

    public static final String RECEIVER_ACTION = "com.example.rfid_sdk_as.receiver.action";

    @Nullable
    @Override
    public IBinder onBind(Intent intent) {
        return null;
      
    }

    @Override
    public void onCreate() {
        super.onCreate();
        deviceManagement = new DeviceManagement(this);

        receiver = new BarCodeReceiver();
        receiver.setDeviceManagement(deviceManagement);
        receiver.setReceiver(receiver);
        registerReceiver(receiver,new IntentFilter(BarCodeReceiver.RECEIVER_ACTION));

        Log.i(TAG,"--------------start service");
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        deviceManagement.exit();
        if(receiver!=null){
            unregisterReceiver(receiver);
        }
        Log.i(TAG,"--------------stop service");
    }


}

2.3、serviceManager 

package com.example.rfidlibrary;

import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.IBinder;
import android.os.RemoteException;
import android.util.Log;

import com.example.rfid_sdk_as.AIDLRFIDData;
import com.example.rfid_sdk_as.AIDLTagData;
import com.example.rfid_sdk_as.BarCodeData;
import com.example.rfid_sdk_as.IAPPServiceRemoteBinder;
import com.example.rfid_sdk_as.InitDeviceCallback;

import java.util.List;

public class RFIDReaderManager {

    private static final String TAG = "RFIDReaderManager";

    private static final String PACKAGE = "com.example.rfid_sdk_as";
    private static final String BIND_ACTION = "com.example.rfid_sdk_as.APPService";
    private IAPPServiceRemoteBinder binderService;
    private static Context mContext;
    private static RFIDReaderManager mManager;
    private RFIDReaderServiceConnectListen mListener;

    public static RFIDReaderManager instance(Context context) {
        Log.i(TAG, "------------------instance-----------------");
        mContext = context;
        if (mManager != null) {
            return mManager;
        } else {
            mManager = new RFIDReaderManager();
        }
        return mManager;
    }

    public void serviceConnectListen(RFIDReaderServiceConnectListen listener) {
        Log.i(TAG, "---------------------ServiceConnect");
        mListener = listener;
        Intent it = new Intent();
        it.setAction(BIND_ACTION);
        it.setPackage(PACKAGE);
//        it.setComponent(new ComponentName(PACKAGE, BIND_ACTION));
        mContext.bindService(it, mserviceConnection, mContext.BIND_AUTO_CREATE);
    }

    public void unbind(){
        Log.i(TAG, "---------------------unbind");
        if(mserviceConnection!=null){
            mContext.unbindService(mserviceConnection);
        }
        binderService = null;
        mListener.disConnect();
    }


    ServiceConnection mserviceConnection = new ServiceConnection() {
        @Override
        public void onServiceDisconnected(ComponentName name) {
            unbind();
        }

        @Override
        public void onServiceConnected(ComponentName name, IBinder service) {
            Log.i(TAG, "---------------------onServiceConnected");
            binderService = IAPPServiceRemoteBinder.Stub.asInterface(service);
            mListener.connected();
        }
    };

    public interface RFIDReaderServiceConnectListen{
        public void connected();
        public void disConnect();
    }
}

2.4、service调用

RFIDReaderManager manager = RFIDReaderManager.instance(this);
        manager.serviceConnectListen(new RFIDReaderManager.RFIDReaderServiceConnectListen() {
            @Override
            public void disConnect() {
                // TODO Auto-generated method stub
            }
            @Override
            public void connected() {
                // TODO Auto-generated method stu
            }
        });

上面是监听到service，然后 调用service中的方法使用。