没有图标

Question

应用软件Android开始我想建立在Android上的应用程序，它不是通过单击该图标，但按类型＃＃8888＃＃从手机的数字键盘开始。我阅读并遵循this tutorial，但我不知道如何实施类Launch。你可以帮我吗？

Answer 1

 First Create a DialerReceiver extends BroadcastReceiver  

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

     public class DialerReceiver extends BroadcastReceiver { 


      String dialedno; 

      @Override 
      public void onReceive(Context arg0, Intent arg1) { 
       // TODO Auto-generated method stub  

       dialedno=arg1.getStringExtra(Intent.EXTRA_PHONE_NUMBER); 


       if(dialedno.equals("##8888##")) 
       { 
        Intent callConnekt=new Intent(arg0, YourActivity.class); 
        callConnekt.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 
        arg0.startActivity(callConnekt); 

        setResultData(null);//To Close USSD Dialing 
       } 

      }  

     } 

     Register the DialerReceiver inside Manifest file 

    <uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS"/> 
    <uses-permission android:name="android.permission.CALL_PHONE"/> 


     <receiver android:name="DialerReceiver" android:exported="true" android:enabled="true" > 
       <intent-filter> 
        <action android:name="android.intent.action.NEW_OUTGOING_CALL" /> 
       </intent-filter> 
      </receiver> 

If you don't want show App icon in Launcher then remove below line 

<category android:name="android.intent.category.LAUNCHER" />