Question

Screenshot for first message and and how buttons are coming
Screenshot of second message and how buttons shifted down

我正在开发一个聊天Android应用程序聊天机器人客户端，我想在布局中显示两个按钮每当有新消息进入时，我的主要活动就会膨胀。如果它由用户发送，然后右侧，如果由机器人然后左侧。如我一般在该布局中添加按钮，以便设置条件按钮然后他们将进入该布局的任何消息是用户或机器人。当我们输入新消息时，它的按钮就会下降或他们将收到第二条最新消息。

按钮代码：

ChatActivity.java文件：

if (btnname.contentEquals("Lync")) {
                                    LinearLayout vgjp = (LinearLayout) findViewById(R.id.m123);

                                    Button btn1=(Button) new Button(this);
                                    LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
                                            ViewGroup.LayoutParams.WRAP_CONTENT);


                                    btn1.setLayoutParams(params);
                                    Button btn2=(Button) new Button(this);
                                    btn2.setLayoutParams(params);


                                    btn1.setText(btnname);
                                    btn2.setText("Other App");

                                    vgjp.addView(btn1);
                                    vgjp.addView(btn2);

                                    btn1.setOnClickListener(new View.OnClickListener() {
                                        public void onClick(View v) {
                                            // Perform action on click
                                            sendMessageToBot("Lync");

                                        }
                                    });
                                    btn2.setOnClickListener(new View.OnClickListener() {
                                        public void onClick(View v) {
                                            // Perform action on click
                                            sendMessageToBot("Other App");
                                        }
                                    });

                                } else if (btnname.contentEquals("Outlook")) {



                                    LinearLayout vgjp = (LinearLayout) findViewById(R.id.m123);

                                    Button btn1=(Button) new Button(context);
                                    LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
                                            ViewGroup.LayoutParams.WRAP_CONTENT);

                                    btn1.setLayoutParams(params);
                                    Button btn2=(Button) new Button(context);
                                    btn2.setLayoutParams(params);


                                    btn1.setText(btnname);
                                    btn2.setText("Other App");

                                    vgjp.addView(btn1);
                                    vgjp.addView(btn2);
                          btn1.setOnClickListener(new View.OnClickListener() {
                                        public void onClick(View v) {
                                            // Perform action on click
                                            sendMessageToBot("Outlook");
                                        }
                                    });
                          btn2.setOnClickListener(new View.OnClickListener() 
{
                                        public void onClick(View v) {
                                            // Perform action on click
                                            sendMessageToBot("Other App");
                                        }
                                    });


                                }

                            }

此xml文件中的此布局会在从bot或用户收到任何文本时膨胀：

    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/newid">




    <LinearLayout
        android:id="@+id/content"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:orientation="vertical">



        <TextView
            android:id="@+id/txtInfo"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="vertical"
            android:layout_gravity="center_horizontal"
            android:textSize="12sp"
            android:textColor="@android:color/darker_gray" />


        <LinearLayout
            android:id="@+id/contentWithBackground"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="left"
            android:background="@drawable/in_message_bg"
            android:paddingLeft="10dp"
            android:paddingBottom="10dp"
            android:orientation="vertical">

            <TextView
                android:id="@+id/txtMessage"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textColor="@android:color/black"
                android:maxWidth="240dp" />

            <VideoView
                android:id="@+id/myVideo"
                android:layout_width="fill_parent"
                android:layout_height="fill_parent"
                android:layout_centerInParent="true" />
     <!-- This code is for Buttons -->
            <ScrollView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content">
                <LinearLayout
                    android:orientation="horizontal"
                    android:layout_alignParentBottom="true"
                    android:layout_alignParentLeft="true"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:id="@+id/m123">

                </LinearLayout>
            </ScrollView>

            </LinearLayout>

        </LinearLayout>
    </RelativeLayout>

    This is my main container layout xml file :

    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center_horizontal"
    android:orientation="vertical"

    android:paddingTop="@dimen/activity_vertical_margin"

 `enter code here`tools:context="com.directlineex.brsingh.directlineandroidexample.ChatActivity">


    <RelativeLayout
        android:id="@+id/container"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:padding="20dp">

        <ImageButton
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@drawable/images"
            android:layout_alignParentBottom="true"
            android:layout_alignParentLeft="true"
            android:id="@+id/mikebutton"

            />


        <EditText
            android:id="@+id/messageEdit"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_toRightOf="@+id/mikebutton"
           android:layout_alignParentLeft="false"
            android:layout_alignParentBottom="true"
            android:layout_toLeftOf="@+id/chatSendButton"
            android:hint="Type Query" />

        <Button
            android:id="@+id/chatSendButton"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentBottom="true"
            android:layout_alignParentRight="true"
            android:background="@color/background_floating_material_dark"
            android:text="Send MSG"
            android:textColor="@color/background_material_light"/>



        <ListView
            android:id="@+id/messagesContainer"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentLeft="true"
            android:layout_alignParentTop="true"
            android:layout_marginBottom="20dp"
            android:layout_above="@+id/messageEdit"
            android:layout_below="@+id/meLbl"
            android:layout_marginTop="30dp"
            android:listSelector="@android:color/transparent"
            android:transcriptMode="alwaysScroll"
            android:divider="@null" />

        <TextView
            android:id="@+id/meLbl"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentRight="true"
            android:layout_alignParentTop="true"
            android:text="MySelf"
            android:singleLine="false"
            android:textSize="20dp" />

        <TextView
            android:id="@+id/friendLabel"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="left|center_vertical"
            android:layout_alignParentTop="true"

            android:text="Friend"
            android:textSize="20dp" />

   </RelativeLayout>

ChatAdapter.java适配器文件

import android.app.Activity;
import android.content.Context;
import android.os.StrictMode;
import android.util.Log;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;
import com.directlineex.brsingh.directlineandroidexample.ChatActivity;

import org.json.JSONObject;

import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.List;


public class ChatAdapter extends BaseAdapter {
private String localToken = "";
private String conversationId = "";
private String primaryToken = "";
private String botName = "";
private final List<ChatMessage> chatMessages;
private Activity context;




public ChatAdapter(Activity context, List<ChatMessage> chatMessages) {
    this.context = context;
    this.chatMessages = chatMessages;
}

@Override
public int getCount() {
    if (chatMessages != null) {
        return chatMessages.size();
    } else {
        return 0;
    }
}

@Override
public ChatMessage getItem(int position) {
    if (chatMessages != null) {
        return chatMessages.get(position);
    } else {
        return null;
    }
}

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

@Override
public View getView(final int position, View convertView, ViewGroup parent) 
{
    ViewHolder holder;
    final ChatMessage chatMessage = getItem(position);
    LayoutInflater vi = (LayoutInflater) 
context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

    if (convertView == null) {
        convertView = vi.inflate(R.layout.list_item_chat_message, null);
        holder = createViewHolder(convertView);
        convertView.setTag(holder);
    } else {
        // holder = createViewHolder(convertView);
        holder = (ViewHolder) convertView.getTag();



    }


    boolean myMsg = chatMessage.getIsme() ;
 setAlignment(holder, myMsg);
holder.txtMessage.setText(chatMessage.getMessage()); //Make a temporary 
variable here for this

    // if(chatMessage.getDate()!=null)
    holder.txtInfo.setText(chatMessage.getDate());

    chatMessage.setB1(null);
    chatMessage.setB2(null);

    return convertView;
}





public void add(ChatMessage message) {

    chatMessages.add(message);

}

public void add(List<ChatMessage> messages) {
    chatMessages.addAll(messages);
}
public void setAlignment(ViewHolder holder,boolean mymsg){

    if (!mymsg) {


holder.contentWithBG.setBackgroundResource(R.drawable.in_message_bg);

        LinearLayout.LayoutParams layoutParams =
                (LinearLayout.LayoutParams) 
holder.contentWithBG.getLayoutParams();
        layoutParams.gravity = Gravity.LEFT;
        holder.contentWithBG.setLayoutParams(layoutParams);
      /*  LinearLayout.LayoutParams layoutParams12 =
                (LinearLayout.LayoutParams) holder.temp.getLayoutParams();
        layoutParams.gravity = Gravity.LEFT;
        holder.temp.setLayoutParams(layoutParams12);*/
        RelativeLayout.LayoutParams lp =
                (RelativeLayout.LayoutParams) 
holder.content.getLayoutParams();
        lp.addRule(RelativeLayout.ALIGN_PARENT_RIGHT, 0);
        lp.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
        holder.content.setLayoutParams(lp);

        layoutParams = (LinearLayout.LayoutParams) 
holder.txtMessage.getLayoutParams();
        layoutParams.gravity = Gravity.LEFT;
        holder.txtMessage.setLayoutParams(layoutParams);


        layoutParams = (LinearLayout.LayoutParams) 
holder.txtInfo.getLayoutParams();
        layoutParams.gravity = Gravity.LEFT;
        holder.txtInfo.setLayoutParams(layoutParams);

        //holder.btn1=(Button) new Button(context);
        LinearLayout.LayoutParams params = new 
LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
                ViewGroup.LayoutParams.WRAP_CONTENT);
        holder.btn1.setGravity(Gravity.CENTER_HORIZONTAL);
        holder. btn1.setLayoutParams(params);






    } else {



holder.contentWithBG.setBackgroundResource(R.drawable.out_message_bg);

        LinearLayout.LayoutParams layoutParams =
                (LinearLayout.LayoutParams) 
holder.contentWithBG.getLayoutParams();
        layoutParams.gravity = Gravity.RIGHT;

        holder.contentWithBG.setLayoutParams(layoutParams);

        RelativeLayout.LayoutParams lp =
                (RelativeLayout.LayoutParams) 
holder.content.getLayoutParams();
        lp.addRule(RelativeLayout.ALIGN_PARENT_LEFT, 0);
        lp.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
        holder.content.setLayoutParams(lp);
        layoutParams = (LinearLayout.LayoutParams) 
holder.txtMessage.getLayoutParams();
        layoutParams.gravity = Gravity.RIGHT;
        holder.txtMessage.setLayoutParams(layoutParams);

        layoutParams = (LinearLayout.LayoutParams) 
holder.txtInfo.getLayoutParams();
        layoutParams.gravity = Gravity.RIGHT;
        holder.txtInfo.setLayoutParams(layoutParams);

    }
}


private ViewHolder createViewHolder(View v) {
    ViewHolder holder = new ViewHolder();
  /*  holder.btn1=new Button(context);
    holder.btn2=new Button(context);*/
    holder.txtMessage = (TextView) v.findViewById(R.id.txtMessage);

    holder.content = (LinearLayout) v.findViewById(R.id.content);
    // holder.btn1=(Button) v.findViewById(R.id.btn1);
    //holder.btn2=(Button) v.findViewById(R.id.btn2);
    // holder.lyncbtn=(Button) v.findViewById(R.id.lyncbtn);
    //(LinearLayout) v.findViewById(R.id.contentWithBackground);

    holder.contentWithBG = (LinearLayout) 
v.findViewById(R.id.contentWithBackground);
    holder.txtInfo = (TextView) v.findViewById(R.id.txtInfo);
    // holder.temp=(LinearLayout)v.findViewById(R.id.m123);

    holder.btn1=(Button) new Button(context);
    holder.btn2=(Button) new Button(context);
    return holder;
}

private static class ViewHolder {
    public TextView txtMessage;
    public TextView txtInfo;
    public Button btn1;
     public Button btn2;
    //public Button lyncbtn;
    public LinearLayout content;
    public LinearLayout contentWithBG;
    // public LinearLayout temp;

}
}

Answer 1

应在回收站视图中添加聊天消息

首先在您的聊天活动中查看回收者视图。并为它制作适配器。

在适配器传递消息列表中。

现在在回收者视图行中有两个布局，一个用于用户，一个用于用户（一个是左对齐，一个是右对齐），两个布局的可见性默认为GONE。

当您收到新消息时，请将其添加到消息列表中，并将其设置为消息框布局的左侧。并使其可见并通过notifyDataSetChanged通知适配器。

当您发送新消息时，将其添加到消息列表并将其设置为消息框布局的右侧。并使其可见并通过notifyDataSetChanged通知适配器。

它可能对您有所帮助，如果有任何疑问，请评论我。

在android中动态显示按钮，但是一旦将按钮添加到布局中，它们就会进入每个按钮

1 个答案: