Sử dụng IExtendedNetworkService để nhận phản hồi USSD trong Android

Question

Tôi đang cố tìm cách tạo yêu cầu USSD trong Android. Tôi đã tìm thấy điều này - http://commandus.com/blog/?p=58. Tôi đã thêm tất cả các tệp cần thiết vào dự án của mình.

USSDDumbExtendedNetworkService.java:

package com.android.ussdcodes; 

import android.app.Service; 
import android.content.BroadcastReceiver; 
import android.content.Context; 
import android.content.Intent; 
import android.content.IntentFilter; 
import android.net.Uri; 
import android.os.IBinder; 
import android.os.PatternMatcher; 
import android.os.RemoteException; 
import android.util.Log; 

import com.android.internal.telephony.IExtendedNetworkService; 
import com.android.ussdcodes.R; 

/** 
* Service implements IExtendedNetworkService interface. 
* USSDDumbExtendedNetworkService 
* Service must have name "com.android.ussd.IExtendedNetworkService" of the intent declared 
* in the Android manifest file so com.android.phone.PhoneUtils class bind 
* to this service after system rebooted. 
* Please note service is loaded after system reboot! 
* Your application must check is system rebooted. 
* @see Util#syslogHasLine(String, String, String, boolean) 
*/ 
public class USSDDumbExtendedNetworkService extends Service { 
    public static final String TAG = "CommandusUSSDExtNetSvc"; 
    public static final String LOG_STAMP = "*USSDTestExtendedNetworkService bind successfully*"; 
    public static final String URI_SCHEME = "ussdcodes"; 
    public static final String URI_AUTHORITY = "android.com"; 
    public static final String URI_PATH = "/"; 
    public static final String URI_PAR = "return"; 
    public static final String URI_PARON = "on"; 
    public static final String URI_PAROFF = "off"; 
    public static final String MAGIC_ON = ":ON;)"; 
    public static final String MAGIC_OFF = ":OFF;("; 
    public static final String MAGIC_RETVAL = ":RETVAL;("; 

    private static boolean mActive = false; 
    private static CharSequence mRetVal = null; 
    private Context mContext = null; 
    private String msgUssdRunning = "USSD running..."; 

    final BroadcastReceiver mReceiver = new BroadcastReceiver() { 
     @Override 
     public void onReceive(Context context, Intent intent) { 
      if (Intent.ACTION_INSERT.equals(intent.getAction())) { 
       mContext = context; 
       if (mContext != null) { 
        msgUssdRunning = mContext.getString(R.string.USSD_run); 
        mActive = true; 
        Log.d(TAG, "activate"); 
       } 
      } else if (Intent.ACTION_DELETE.equals(intent.getAction())) { 
       mContext = null; 
       mActive = false; 
       Log.d(TAG, "deactivate"); 
      } 
     } 
    }; 

    private final IExtendedNetworkService.Stub mBinder = new IExtendedNetworkService.Stub() { 
     @Override 
     public void setMmiString(String number) throws RemoteException { 
      Log.d(TAG, "setMmiString: " + number); 
     } 

     @Override 
     public CharSequence getMmiRunningText() throws RemoteException { 
      Log.d(TAG, "getMmiRunningText: " + msgUssdRunning); 
      return msgUssdRunning; 
     } 

     @Override 
     public CharSequence getUserMessage(CharSequence text) 
       throws RemoteException { 
      if (MAGIC_ON.contentEquals(text)) { 
       mActive = true; 
       Log.d(TAG, "control: ON"); 
       return text; 
      } else { 
       if (MAGIC_OFF.contentEquals(text)) { 
        mActive = false; 
        Log.d(TAG, "control: OFF"); 
        return text; 
       } else { 
        if (MAGIC_RETVAL.contentEquals(text)) { 
         mActive = false; 
         Log.d(TAG, "control: return"); 
         return mRetVal; 
        } 
       } 
      } 

      if (!mActive) { 
       Log.d(TAG, "getUserMessage deactivated: " + text); 
       return text; 
      } 
      String s = text.toString(); 
      // store s to the ! 
      Uri uri = new Uri.Builder() 
       .scheme(URI_SCHEME) 
       .authority(URI_AUTHORITY) 
       .path(URI_PATH) 
       .appendQueryParameter(URI_PAR, text.toString()) 
       .build(); 
      sendBroadcast(new Intent(Intent.ACTION_GET_CONTENT, uri)); 
      mActive = false; 
      mRetVal = text; 
      Log.d(TAG, "getUserMessage: " + text + "=" + s); 
      return null; 
     } 

     @Override 
     public void clearMmiString() throws RemoteException { 
      Log.d(TAG, "clearMmiString"); 
     } 
    }; 


    /** 
    * Put stamp to the system log when PhoneUtils bind to the service 
    * after Android has rebooted. Application must call {@link Util#syslogHasLine(String, String, String, boolean)} to 
    * check is phone rebooted or no. Without reboot phone application does not bind tom this service! 
    */ 
    @Override 
    public IBinder onBind(Intent intent) { 
     // Do not localize! 
     Log.i(TAG, LOG_STAMP); 
     IntentFilter filter = new IntentFilter(); 
     filter.addAction(Intent.ACTION_INSERT); 
     filter.addAction(Intent.ACTION_DELETE); 
     filter.addDataScheme(URI_SCHEME); 
     filter.addDataAuthority(URI_AUTHORITY, null); 
     filter.addDataPath(URI_PATH, PatternMatcher.PATTERN_LITERAL); 
     registerReceiver(mReceiver, filter); 

     return mBinder; 
    } 

    public IBinder asBinder() { 
     Log.d(TAG, "asBinder"); 
     return mBinder; 
    } 

} 

Manifest:

<receiver android:name="com.android.ussdcodes.BootReceiver"> 
      <intent-filter> 
       <action android:name="android.intent.action.BOOT_COMPLETED" /> 
      </intent-filter> 
     </receiver> 

     <service 
      android:name=".USSDDumbExtendedNetworkService" > 
      <intent-filter android:icon="@drawable/ic_launcher"> 
       <action android:name="com.android.ussd.IExtendedNetworkService" /> 
       <category android:name="android.intent.category.DEFAULT" /> 
      </intent-filter> 
     </service> 

BootReceiver.java:

package com.android.ussdcodes; 

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

public class BootReceiver extends BroadcastReceiver { 

    @Override 
    public void onReceive(Context context, Intent intent) { 
     // TODO Auto-generated method stub 
     Log.d("USSDService", context.getString(R.string.service_started)); 
     context.startService(new Intent(context,USSDDumbExtendedNetworkService.class)); 
    } 

} 

Vì vậy, bây giờ là dịch vụ bắt đầu sau khi khởi động hoàn tất.

Và câu hỏi của tôi là cách tôi phải gửi yêu cầu USSD và nhận phản hồi với dịch vụ? Cảm ơn!)

Answer 1

Vâng, tôi đã tìm thấy câu trả lời.

Tôi chỉ cần đặt link on my gist.

thông điệp Tắt

USSDDumbExtendedNetworkService.mActive = false; 

Gửi USSD:

Intent launchCall = new Intent(Intent.ACTION_CALL, 
         Uri.parse("tel:" + Uri.encode(ussdcode))); 
launchCall.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 
launchCall.addFlags(Intent.FLAG_FROM_BACKGROUND); 
startActivity(launchCall); 

Kích hoạt thông điệp nữa

USSDDumbExtendedNetworkService.mActive = true; 
USSDDumbExtendedNetworkService.mRetVal = null;