如何在recyclerView中管理顯示數據Android

我有一個webView三個組件來自html文件。我希望應用在點擊該按鈕後發送短信，並在recyclerView中顯示消息日誌。如何在recyclerView中管理顯示數據Android

所以短信將被正確發送，但沒有任何顯示在recyclerView。

message.html資產

<!DOCTYPE html> 
<html lang="en"> 
    <head> 
     <script type="text/javascript"> 
      function sendAndroidMessage() { 

       phoneNumber = document.getElementById('phoneNumber').value; 
       messageText = document.getElementById('messageText').value; 

       Android.sendMessage(phoneNumber, messageText); 
      } 
      </script> 
    </head> 
    <body> 
     <input id="phoneNumber" type="tel" placeholder="Enter the Phone Number"/> 
     <br/> 
     <br/> 
     <input id="messageText" type="text" placeholder="Enter Message Content" > 
     <br/> 
     <br/> 
     <input id="sendBtn" type="button" value="Send" onclick="sendAndroidMessage()" > 
    </body> 
</html>

javaScriptInterface

public SendMessageInterface(Context context) { 
    this.context = context; 
} 

@JavascriptInterface 
public void sendMessage(String phoneNumber, String messageText) { 

    message = new Message(); 
    message.setMessageText(messageText); 
    message.setPhoneNumber(phoneNumber); 

    sendSMS(); 
}

sendSMS（）：

String smsBody  = message.getMessageText(); 
     String phoneNumber = message.getPhoneNumber(); 

     String SENT = "SMS_SENT"; 
     String DELIVERED = "SMS_DELIVERED"; 

     PendingIntent sentPI = PendingIntent.getBroadcast(context, 0, 
       new Intent(SENT), 0); 

     PendingIntent deliveredPI = PendingIntent.getBroadcast(context, 0, 
       new Intent(DELIVERED), 0); 

     //---when the SMS has been sent--- 
     context.registerReceiver (new BroadcastReceiver(){ 
      @Override 
      public void onReceive(Context arg0, Intent arg1) { 
       switch (getResultCode()) 
       { 
        case Activity.RESULT_OK: 

         message.setMessageSent(true); 

         Toast.makeText(context, "SMS sent", 
           Toast.LENGTH_SHORT).show(); 
         break; 
        case SmsManager.RESULT_ERROR_GENERIC_FAILURE: 

         message.setMessageSent(false); 

         Toast.makeText(context, "Generic failure", 
           Toast.LENGTH_SHORT).show(); 
         break; 
        case SmsManager.RESULT_ERROR_NO_SERVICE: 

         message.setMessageSent(false); 

         Toast.makeText(context, "No service", 
           Toast.LENGTH_SHORT).show(); 
         break; 
        case SmsManager.RESULT_ERROR_NULL_PDU: 

         message.setMessageSent(false); 

         Toast.makeText(context, "Null PDU", 
           Toast.LENGTH_SHORT).show(); 
         break; 
        case SmsManager.RESULT_ERROR_RADIO_OFF: 

         message.setMessageSent(false); 

         Toast.makeText(context, "Radio off", 
           Toast.LENGTH_SHORT).show(); 
         break; 
       } 
      } 
     }, new IntentFilter(SENT)); 

     try { 
      SmsManager smsManager = SmsManager.getDefault(); 
      smsManager.sendTextMessage(phoneNumber, null, smsBody, sentPI, deliveredPI); 

     }catch (Exception ex) { 
      Toast.makeText(context,ex.getMessage().toString(), 
        Toast.LENGTH_LONG).show(); 
      ex.printStackTrace(); 
     }

終於MainActivity.java：

messageInfo = (WebView)findViewById(R.id.message); 
    messageInfo.loadUrl("file:///android_asset/message.html"); 
    messageInfo.getSettings().setJavaScriptEnabled(true); 
    message = new Message(); 

    recyclerView = (RecyclerView)findViewById(R.id.show_message); 
    messageAdapter = new MessageAdapter(this, messageList); 

    messageInfo.addJavascriptInterface(new SendMessageInterface(MainActivity.this), "Android"); 

    setMessageAdapter();

setMassageAdapter（）：

messageList.add(message); 

    recyclerView.setHasFixedSize(false); 
    RecyclerView.LayoutManager mLayoutManager = new LinearLayoutManager(MainActivity.this); 
    recyclerView.setLayoutManager(mLayoutManager); 
    recyclerView.setItemAnimator(new DefaultItemAnimator()); 

    recyclerView.setAdapter(messageAdapter); 
    messageAdapter.notifyDataSetChanged();

我很迷茫，不知道如何解決它或搜索的內容

來源

2017-03-06 Shima Erfan

好吧，我已經找到了答案！我把它放在這裏希望對別人有用。不需要asyncTask課程或任何東西，只需在短信發送時撥打setMessageAdapter即可。現在Mainctivity是這樣的：

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 

    checkPermission(); 


    messageInfo = (WebView)findViewById(R.id.message); 
    messageInfo.loadUrl("file:///android_asset/message.html"); 
    messageInfo.getSettings().setJavaScriptEnabled(true); 
    message = new Message(); 

    recyclerView = (RecyclerView)findViewById(R.id.show_message); 
    messageAdapter = new MessageAdapter(this, messageList); 

    messageInfo.addJavascriptInterface(new SendMessageInterface(), "Android"); 

} 

public void checkPermission(){ 
    if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M) { 

     if (checkSelfPermission(Manifest.permission.SEND_SMS) 
       == PackageManager.PERMISSION_DENIED) { 

      Log.d("permission", "permission denied to SEND_SMS - requesting it"); 
      String[] permissions = {Manifest.permission.SEND_SMS}; 

      requestPermissions(permissions, PERMISSION_REQUEST_CODE); 

     } 
    } 
} 

public class SendMessageInterface { 

    public SendMessageInterface() {} 
    @JavascriptInterface 
    public void sendMessage(String phoneNumber, String messageText) { 

     message = new Message(); 
     message.setMessageText(messageText); 
     message.setPhoneNumber(phoneNumber); 

     sendSMS(); 
    } 
} 

public void sendSMS(){ 

    String smsBody  = message.getMessageText(); 
    String phoneNumber = message.getPhoneNumber(); 

    String SENT = "SMS_SENT"; 

    PendingIntent sentPI = PendingIntent.getBroadcast(MainActivity.this, 0, 
      new Intent(SENT), 0); 

    //---when the SMS has been sent--- 
    registerReceiver (new BroadcastReceiver(){ 
     @Override 
     public void onReceive(Context arg0, Intent arg1) { 
      switch (getResultCode()) 
      { 
       case Activity.RESULT_OK: 

        message.setMessageSent(true); 
        Log.e("is sent?1", ": " + message.isMessageSent()); 
        setMessageAdapter(); 
       default: 
        message.setMessageSent(false); 
        setMessageAdapter(); 
      } 
     } 
    }, new IntentFilter(SENT)); 

    try { 
     SmsManager smsManager = SmsManager.getDefault(); 
     smsManager.sendTextMessage(phoneNumber, null, smsBody, sentPI, null); 

     dataBase = new DataBase(MainActivity.this); 
     dataBase.insertSms(phoneNumber, smsBody, message.isMessageSent()); 


    }catch (Exception ex) { 
     Toast.makeText(MainActivity.this,ex.getMessage().toString(), 
       Toast.LENGTH_LONG).show(); 
     ex.printStackTrace(); 
    } 

} 

public void setMessageAdapter(){ 

    messageList.add(message); 

    recyclerView.setHasFixedSize(false); 
    RecyclerView.LayoutManager mLayoutManager = new LinearLayoutManager(MainActivity.this); 
    recyclerView.setLayoutManager(mLayoutManager); 
    recyclerView.setItemAnimator(new DefaultItemAnimator()); 

    recyclerView.setAdapter(messageAdapter); 
    messageAdapter.notifyDataSetChanged(); 

}

來源

2017-03-06 11:28:34

如何在recyclerView中管理顯示數據Android

回答

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