無法在android

中使用自定義列表視圖設置左右對話正在開發一個聊天應用程序。我使用smack庫完成了它們。一切正常，即使用戶也可以相互聊天，但無法設置傳入消息在ListView的右側。我已經嘗試了TextView的權重。但我無法實現它。我提到了一些這些問題，但我沒有幫助我！無法在android

1. Left and Right alignment

2. Listview Row Layout

public class ChatRoom extends Activity { 
    private final static String SERVER_HOST = "talk.google.com"; 
    private final static int SERVER_PORT = 5222; 
    private final static String SERVICE_NAME = "gmail.com"; 
    private final static String LOGIN = "[email protected]"; 
    private final static String PASSWORD = "password"; 
    private List<String> m_discussionThread; 
    private XMPPConnection m_connection; 
    private Handler m_handler; 
    private String mtemp_user_id; 
    private ProgressDialog p_dialog; 
    EditText mMsg; 
    ListView listview; 
    MyAdapter myadpter; 
    String fromName; 
    String mtempSpecial; 
    String SendMSg, RecievdMsg; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_chat_screen); 
     PrepareChat prechat = new PrepareChat(); //AsyncTask 
     m_handler = new Handler(); 
     p_dialog = new ProgressDialog(ChatRoom.this); 
     m_discussionThread = new ArrayList<String>(); 
     myadpter = new MyAdapter(m_discussionThread); 
     Bundle bundle = getIntent().getExtras(); 
     mtemp_user_id = bundle.getString("USER"); 

     prechat.execute(); 


     listview = (ListView) findViewById(R.id.list_view_); 
     listview.setAdapter(myadpter); 

     mMsg = (EditText) findViewById(R.id.ed_msg); 
     findViewById(R.id.b_MSG_To).setOnClickListener(new OnClickListener() { 
      @Override 
      public void onClick(View arg0) { 
       SendMSg = "SEND"; 
       Message msg = new Message(mtemp_user_id, Message.Type.chat); 
       msg.setBody(mMsg.getText().toString()); 
       m_connection.sendPacket(msg); 
       m_discussionThread.add(mMsg.getText().toString()); 
       mMsg.setText(""); 
      } 
     }); 
    } 

    public class PrepareChat extends AsyncTask<Void, Void, Void> { 

     @Override 
     protected void onPreExecute() { 
      super.onPreExecute(); 
      p_dialog.setMessage("Preparing chat"); 
      p_dialog.setCancelable(false); 
      p_dialog.show(); 
     } 

     @Override 
     protected Void doInBackground(Void... params) { 
      System.out.println("In do in back ..."); 
      try { 
       initConnection(); 
      } catch (XMPPException e) { 
       e.printStackTrace(); 
      } 
      return null; 
     } 

     @Override 
     protected void onPostExecute(Void result) { 
      super.onPostExecute(result); 
      p_dialog.dismiss(); 
     } 
    } 

    private void initConnection() throws XMPPException { 
     ConnectionConfiguration config = new ConnectionConfiguration(
       SERVER_HOST, SERVER_PORT, SERVICE_NAME); 
     m_connection = new XMPPConnection(config); 
     m_connection.connect(); 

     m_connection.login(LOGIN, PASSWORD); 
     System.out.println("After LOGInd"); 
     Presence presence = new Presence(Presence.Type.available); 
     presence.setStatus("available"); 
     m_connection.sendPacket(presence); 
     PacketFilter filter = new MessageTypeFilter(Message.Type.chat); 
     m_connection.addPacketListener(new PacketListener() { 
      public void processPacket(Packet packet) { 
       Message message = (Message) packet; 

       if (message.getBody() != null) { 
        String fromName = StringUtils.parseBareAddress(message 
          .getFrom()); 

        String mtempSpecial = message.getBody().toString(); 
        m_discussionThread.add(mtemp_user_id + mtempSpecial); 
        RecievdMsg = "RE"; 
        m_handler.post(new Runnable() { 
         public void run() { 

          myadpter.notifyDataSetChanged(); 
          listview.setSelection(myadpter.getCount() - 1); 
         } 
        }); 
       } 
      } 
     }, filter); 
    } 

    public class MyAdapter extends BaseAdapter { 
     LayoutInflater layoutinflate; 
     List<String> list = new ArrayList<String>(); 
     Context context; 

     public MyAdapter(List<String> m_discussionThread) { 
      list = m_discussionThread; 
     } 

     @Override 
     public int getCount() { 
      return list.size(); 
     } 

     @Override 
     public Object getItem(int items) { 
      return items; 
     } 

     @Override 
     public long getItemId(int posi) { 
      return posi; 
     } 

     @Override 
     public View getView(int position, View arg1, ViewGroup view_Group) { 
      View view_ = arg1; 
      LayoutInflater layout_inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE); 

      if (SendMSg.equals("SEND")) { 
       view_ = layout_inflater.inflate(R.layout.chat_b, view_Group, 
         false); 
       TextView tv_MyMsg = (TextView) view_ 
         .findViewById(R.id.tv_mymsg); 
       System.out.println("in send loop"); 
      // tv_MyMsg.setGravity(Gravity.RIGHT); 
       tv_MyMsg.setText(list.get(position)); //TextView not binding to the right. 
       SendMSg = ""; 
      } else { 
       view_ = layout_inflater.inflate(R.layout.chat_ab, view_Group, 
         false); 
       TextView tv_FromMsg = (TextView) view_ 
         .findViewById(R.id.tv_From_Msg); 
       tv_FromMsg.setText(list.get(position)); 
       /* 
       * tv_ToMsg.setGravity(Gravity.LEFT); 
       * System.out.println("in else"); tv_FromMsg.setText(""); 
       * tv_ToMsg.setText(list.get(position)); 
       */} 


      return view_; 
     } 

    } 

}

UPDATE

只有chat_ab.xml得到填充，但chat_b.xml包含綠色文本被忽略。

chat_ab.xml ...

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="fill_parent" 
android:background="#ffffff" 
android:layout_gravity="left" 
android:layout_height="fill_parent" > 

<TextView 
    android:id="@+id/tv_From_Msg" 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:layout_alignParentLeft="true" 
    android:layout_alignParentTop="true" 
    android:gravity="left" 
    android:text="Large Text" 
    android:textAppearance="?android:attr/textAppearanceLarge" 
    android:textColor="#FF00FF" />

chat_b.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="wrap_content" 
android:background="#ffffff" 
android:layout_gravity="right" 
android:layout_height="fill_parent" > 

<TextView 
    android:id="@+id/tv_mymsg" 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:textColor="#0000ff" 
    android:layout_alignParentRight="true" 
    android:gravity="right" 
    android:layout_alignParentTop="true" 
    android:text="Large Text" 
    android:textAppearance="?android:attr/textAppearanceLarge" />

我得到到目前爲止，這是 Up screen shot 什麼我希望我的留言（走出去）在t的右邊他ListView並傳出到屏幕左側。請不要建議。