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Android 广播介绍与service一起使用案例

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内容图文

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
        publicvoid 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 {

    publicstaticfinal String RECEIVER_ACTION = "com.android.server.scannerservice.broadcastbl";

    private DeviceManagement deviceManagement;

    private  BarCodeReceiver receiver;

    publicvoid setDeviceManagement(DeviceManagement deviceManagement){
        this.deviceManagement =  deviceManagement;
    }

    publicvoid setReceiver(BarCodeReceiver receiver){
        this.receiver = receiver;

    }
    @Override
    publicvoid 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
                    publicvoid 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 {

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

    publicstaticfinal String RECEIVER_ACTION = "com.example.rfid_sdk_as.receiver.action";

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

    @Override
    publicvoid 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
    publicvoid 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";

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

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

    publicvoid 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);
    }

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


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

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

    publicinterface RFIDReaderServiceConnectListen{
        publicvoid connected();
        publicvoid disConnect();
    }
}

2.4、service调用

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

上面是监听到service，然后 调用service中的方法使用。

         

原文：https://www.cnblogs.com/zoro-zero/p/12403874.html

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