从服务更新活动中的textview

Question

下面的示例是通过广播接收器从服务更新活动中的textiviews的示例，但我想将服务的计算带宽使用情况发送到其他活动中的文本视图，我尝试了一种方法，但它不起作用（它只显示文本字段中的包名称

广播服务（发射机）

    public class BroadcastService  extends Service {
    private static final String TAG = "BroadcastService";
    public static final String BROADCAST_ACTION = "com.websmithing.broadcasttest.displayevent";
    private final Handler handler = new Handler();
    Intent intent;
    int counter = 0;

    @Override
    public void onCreate() {
        super.onCreate();

        intent = new Intent(BROADCAST_ACTION);  
    }

    @Override
    public void onStart(Intent intent, int startId) {
        handler.removeCallbacks(sendUpdatesToUI);
        handler.postDelayed(sendUpdatesToUI, 1000); // 1 second

    }

    private Runnable sendUpdatesToUI = new Runnable() {
        public void run() {
            DisplayLoggingInfo();           
            handler.postDelayed(this, 10000); // 10 seconds
        }
    };    

    private void DisplayLoggingInfo() {
        Log.d(TAG, "entered DisplayLoggingInfo");

        intent.putExtra("time", new Date().toLocaleString());
        intent.putExtra("counter", String.valueOf(++counter));
        sendBroadcast(intent);
    }

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

    @Override
    public void onDestroy() {       
        handler.removeCallbacks(sendUpdatesToUI);       
        super.onDestroy();
    }       
}

广播服务（收件人）

public class BroadcastTest extends Activity {
    private static final String TAG = "BroadcastTest";
    private Intent intent;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        intent = new Intent(this, BroadcastService.class);
    }

    private BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            updateUI(intent);       
        }
    };    

    @Override
    public void onResume() {
        super.onResume();       
        startService(intent);
        registerReceiver(broadcastReceiver, new IntentFilter(BroadcastService.BROADCAST_ACTION));
    }

    @Override
    public void onPause() {
        super.onPause();
        unregisterReceiver(broadcastReceiver);
        stopService(intent);        
    }   
    public void ohh(View view) { 
        Intent intent = new Intent(this, BroadcastService.class);
        startActivity(intent);
    }

    private void updateUI(Intent intent) {
        String counter = intent.getStringExtra("time"); 
        String time = intent.getStringExtra("counter");
        Log.d(TAG, counter);
        Log.d(TAG, time);

        TextView txtDateTime = (TextView) findViewById(R.id.txtDateTime);   
        TextView txtCounter = (TextView) findViewById(R.id.txtCounter);
        txtDateTime.setText(time);
        txtCounter.setText(counter);
    }
}

带宽使用计算器

public class Main extends Activity {

    private Handler mHandler = new Handler();
    private long mStartRX = 0;
    private long mStartTX = 0;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        mStartRX = TrafficStats.getTotalRxBytes();
        mStartTX = TrafficStats.getTotalTxBytes();
        if (mStartRX == TrafficStats.UNSUPPORTED || mStartTX == TrafficStats.UNSUPPORTED) {
            AlertDialog.Builder alert = new AlertDialog.Builder(this);
            alert.setTitle("Uh Oh!");
            alert.setMessage("Your device does not support traffic stat monitoring.");
            alert.show();
        } else {
            mHandler.postDelayed(mRunnable, 1000);
        }
    }

    private final Runnable mRunnable = new Runnable() {
        public void run() {
            TextView RX = (TextView)findViewById(R.id.RX);
            TextView TX = (TextView)findViewById(R.id.TX);
            long rxBytes = TrafficStats.getTotalRxBytes()- mStartRX;
            RX.setText(Long.toString(rxBytes));
            long txBytes = TrafficStats.getTotalTxBytes()- mStartTX;
            TX.setText(Long.toString(txBytes));
            mHandler.postDelayed(mRunnable, 1000);
        }
     };
}

我的方法

public class BroadcastService  extends Service {
    private static final String TAG = "BroadcastService";
    public static final String BROADCAST_ACTION = "com.websmithing.broadcasttest.displayevent";
    private final Handler handler = new Handler();
    Intent intent;
    int counter = 0;
    private Handler mHandler = new Handler();
    private long mStartRX = 0;
    private long mStartTX = 0;

    @Override
    public void onCreate() {
        super.onCreate();
        intent = new Intent(BROADCAST_ACTION);  
        mStartRX = TrafficStats.getTotalRxBytes();
        mStartTX = TrafficStats.getTotalTxBytes();
        if (mStartRX == TrafficStats.UNSUPPORTED || mStartTX == TrafficStats.UNSUPPORTED) {
            AlertDialog.Builder alert = new AlertDialog.Builder(this);
            alert.setTitle("Uh Oh!");
            alert.setMessage("Your device does not support traffic stat monitoring.");
            alert.show();
        } else {
            mHandler.postDelayed(mRunnable, 1000);
        }

    }
    private final Runnable mRunnable = new Runnable() {
        public void run() {
        //  TextView RX = (TextView)findViewById(R.id.RX);
        //  TextView TX = (TextView)findViewById(R.id.TX);
            long rxBytes = TrafficStats.getTotalRxBytes()- mStartRX;
      //    RX.setText(Long.toString(rxBytes));
            long txBytes = TrafficStats.getTotalTxBytes()- mStartTX;
       //   TX.setText(Long.toString(txBytes));
            mHandler.postDelayed(mRunnable, 1000);
        }
     };


    @Override
    public void onStart(Intent intent, int startId) {
        handler.removeCallbacks(sendUpdatesToUI);
        handler.postDelayed(sendUpdatesToUI, 1000); // 1 second

    }

    private Runnable sendUpdatesToUI = new Runnable() {
        public void run() {
            DisplayLoggingInfo();           
            handler.postDelayed(this, 10000); // 10 seconds
        }
    };    

    private void DisplayLoggingInfo() {
        Log.d(TAG, "entered DisplayLoggingInfo");

        intent.putExtra("time", new Date().toLocaleString());
        intent.putExtra("counter", String.valueOf(++counter));
        sendBroadcast(intent);
    }

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

    @Override
    public void onDestroy() {       
        handler.removeCallbacks(sendUpdatesToUI);       
        super.onDestroy();
    }       
}

我在 intent.putExtra（“counter”，String.valueOf）中传输“ rxBytes ”和“ txBytes ”的值时出现问题（++ counter））;

它们的值未被使用，因此以黄色突出显示