非法參數異常：發送短信時無效的郵件正文

我試圖創建一個服務，發送包含當前wifi使用情況的短信但是我不斷收到一個錯誤，指出「非法參數異常：無效郵件正文」。非法參數異常：發送短信時無效的郵件正文

有什麼建議嗎？

SOURCE：

public class Alarm extends Service { 

    @Override 
    public void onCreate() { 

     // TODO Auto-generated method stub 

    } 

    @Override 
    public IBinder onBind(Intent intent) { 

     // TODO Auto-generated method stub 

     return null; 

    } 

    @Override 
    public void onStart(Intent intent, int startId) { 

     // TODO Auto-generated method stub 

     super.onStart(intent, startId); 


     String info = ""; 
     String sms = info; 

     info += "Monthly Wifi Data Usage Amount:\t"; 
     info += ("\tReceived: " + TrafficStats.getTotalRxBytes() + " bytes/" 
       + TrafficStats.getTotalRxPackets() + " packets\n"); 
     info += ("\tTransmitted: " + TrafficStats.getTotalTxBytes() 
       + " bytes/" + TrafficStats.getTotalTxPackets() + " packets\n"); 

     SmsManager smsManager = SmsManager.getDefault(); 
     smsManager.sendTextMessage("9545555555", null, sms, null, null);  

    } 

    @Override 
    public boolean onUnbind(Intent intent) { 

     // TODO Auto-generated method stub 

     return super.onUnbind(intent); 

    } 

}

logcat的：

@Override 
    public void onCreate() { 

     // TODO Auto-generated method stub 

    } 

    @Override 
    public IBinder onBind(Intent intent) { 

     // TODO Auto-generated method stub 

     return null; 

    } 

    @Override 
    public void onStart(Intent intent, int startId) { 

     // TODO Auto-generated method stub 

     super.onStart(intent, startId); 

     String phoneNumber = "9545555555"; 
     String sms = ""; 
    // String sms = info; 

     sms += "Monthly Wifi Data Usage Amount:\t"; 
     sms += ("\tReceived: " + TrafficStats.getTotalRxBytes() + " bytes/" 
       + TrafficStats.getTotalRxPackets() + " packets\n"); 
     sms += ("\tTransmitted: " + TrafficStats.getTotalTxBytes() 
       + " bytes/" + TrafficStats.getTotalTxPackets() + " packets\n"); 

     SmsManager smsManager = SmsManager.getDefault(); 
     smsManager.sendTextMessage("9545555555", null, sms, null, null); 

    } 

    @Override 
    public boolean onUnbind(Intent intent) { 

     // TODO Auto-generated method stub 

     return super.onUnbind(intent); 

    } 

}

修訂的logcat（AFTER第一響應）

06-12 16:32:49.645: E/AndroidRuntime(31197): FATAL EXCEPTION: main 
06-12 16:32:49.645: E/AndroidRuntime(31197): java.lang.RuntimeException: Unable to start service [email protected] with Intent { flg=0x4 cmp=com.example.wifimonitor/.Alarm (has extras) }: java.lang.NullPointerException 
06-12 16:32:49.645: E/AndroidRuntime(31197): at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:2549) 
06-12 16:32:49.645: E/AndroidRuntime(31197): at android.app.ActivityThread.access$2000(ActivityThread.java:139) 
06-12 16:32:49.645: E/AndroidRuntime(31197): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321) 
06-12 16:32:49.645: E/AndroidRuntime(31197): at android.os.Handler.dispatchMessage(Handler.java:99) 
06-12 16:32:49.645: E/AndroidRuntime(31197): at android.os.Looper.loop(Looper.java:137) 
06-12 16:32:49.645: E/AndroidRuntime(31197): at android.app.ActivityThread.main(ActivityThread.java:4918) 
06-12 16:32:49.645: E/AndroidRuntime(31197): at java.lang.reflect.Method.invokeNative(Native Method) 
06-12 16:32:49.645: E/AndroidRuntime(31197): at java.lang.reflect.Method.invoke(Method.java:511) 
06-12 16:32:49.645: E/AndroidRuntime(31197): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1004) 
06-12 16:32:49.645: E/AndroidRuntime(31197): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:771) 
06-12 16:32:49.645: E/AndroidRuntime(31197): at dalvik.system.NativeStart.main(Native Method) 
06-12 16:32:49.645: E/AndroidRuntime(31197): Caused by: java.lang.NullPointerException 
06-12 16:32:49.645: E/AndroidRuntime(31197): at android.os.Parcel.readException(Parcel.java:1431) 
06-12 16:32:49.645: E/AndroidRuntime(31197): at android.os.Parcel.readException(Parcel.java:1379) 
06-12 16:32:49.645: E/AndroidRuntime(31197): at com.android.internal.telephony.ISms$Stub$Proxy.sendText(ISms.java:714) 
06-12 16:32:49.645: E/AndroidRuntime(31197): at android.telephony.SmsManager.sendTextMessage(SmsManager.java:203) 
06-12 16:32:49.645: E/AndroidRuntime(31197): at com.example.wifimonitor.Alarm.onStart(Alarm.java:44) 
06-12 16:32:49.645: E/AndroidRuntime(31197): at android.app.Service.onStartCommand(Service.java:450) 
06-12 16:32:49.645: E/AndroidRuntime(31197): at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:2532) 
06-12 16:32:49.645: E/AndroidRuntime(31197): ... 10 more

：

06-12 15:53:42.395: E/AndroidRuntime(29664): FATAL EXCEPTION: main 
06-12 15:53:42.395: E/AndroidRuntime(29664): java.lang.RuntimeException: Unable to start service [email protected] with Intent { flg=0x4 cmp=com.example.wifimonitor/.Alarm (has extras) }: java.lang.IllegalArgumentException: Invalid message body 
06-12 15:53:42.395: E/AndroidRuntime(29664): at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:2549) 
06-12 15:53:42.395: E/AndroidRuntime(29664): at android.app.ActivityThread.access$2000(ActivityThread.java:139) 
06-12 15:53:42.395: E/AndroidRuntime(29664): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321) 
06-12 15:53:42.395: E/AndroidRuntime(29664): at android.os.Handler.dispatchMessage(Handler.java:99) 
06-12 15:53:42.395: E/AndroidRuntime(29664): at android.os.Looper.loop(Looper.java:137) 
06-12 15:53:42.395: E/AndroidRuntime(29664): at android.app.ActivityThread.main(ActivityThread.java:4918) 
06-12 15:53:42.395: E/AndroidRuntime(29664): at java.lang.reflect.Method.invokeNative(Native Method) 
06-12 15:53:42.395: E/AndroidRuntime(29664): at java.lang.reflect.Method.invoke(Method.java:511) 
06-12 15:53:42.395: E/AndroidRuntime(29664): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1004) 
06-12 15:53:42.395: E/AndroidRuntime(29664): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:771) 
06-12 15:53:42.395: E/AndroidRuntime(29664): at dalvik.system.NativeStart.main(Native Method) 
06-12 15:53:42.395: E/AndroidRuntime(29664): Caused by: java.lang.IllegalArgumentException: Invalid message body 
06-12 15:53:42.395: E/AndroidRuntime(29664): at android.telephony.SmsManager.sendTextMessage(SmsManager.java:119) 
06-12 15:53:42.395: E/AndroidRuntime(29664): at com.example.wifimonitor.Alarm.onStart(Alarm.java:59) 
06-12 15:53:42.395: E/AndroidRuntime(29664): at android.app.Service.onStartCommand(Service.java:450) 
06-12 15:53:42.395: E/AndroidRuntime(29664): at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:2532) 
06-12 15:53:42.395: E/AndroidRuntime(29664): ... 10 more

EDIT FIRST響應之後

來源

2013-06-12 Amani Swann

由於空消息，您得到了該錯誤。

這：

String info = ""; 
    String sms = info;

下面的代碼後，info和sms是相同的。但是，在執行此操作之後：

info += "Monthly Wifi Data Usage Amount:\t";

一個新的String被創建並分配給info，所以info和sms是不一樣了。 sms仍然是空的，這就是爲什麼你得到IllegalArgumentException。

只需在您的代碼中刪除info，並且只使用sms變量。您還可以使用 StringBuilder

來源

2013-06-12 20:19:51 andrew

我嘗試了建議的方法（我加了上面的更新源代碼），但現在我結束了一個空指針異常（謝謝你的幫助BTW！） –

@ user2478682大概短信太大了。嘗試使用較小來檢查它。 – andrew

就是這樣！謝謝你，先生！！ –

非法參數異常：發送短信時無效的郵件正文

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