如何使消息出现在不同的侧面? [英] How to make messages appear on different sides?
本文介绍了如何使消息出现在不同的侧面?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我使用视频教程制作了一个聊天应用程序，但该教程并未说明如何使来自不同人的消息出现在不同的地方.发送者和接收者在左侧看到所有消息.您能对此提供一些建议吗?预先感谢.
I make a chat app using a video tutorial, but this tutorial does not show how to make messages from different people appear on different sides. The sender and receiver see all messages on the left. Could you please give some advices on this? Thanks in advance.
现在看起来像这样
主要代码
public class MainActivity extends AppCompatActivity {
private static int SIGN_IN_CODE=1;
private RelativeLayout activity_main;
private FirebaseListAdapter<Message> adapter;
private FloatingActionButton sendBtn;
@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(requestCode==SIGN_IN_CODE) {
if(requestCode == RESULT_OK) {
Snackbar.make(activity_main, "You are authorized", Snackbar.LENGTH_LONG).show();
displayAllMessages();
} else {
Snackbar.make(activity_main, "You are not authorized", Snackbar.LENGTH_LONG).show();
finish();
}
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
activity_main=findViewById(R.id.activity_main);
sendBtn = findViewById(R.id.btnSend);
sendBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
EditText textField = findViewById(R.id.messageField);
if(textField.getText().toString().equals(""))
return;
FirebaseDatabase.getInstance().getReference().push().setValue(
new Message(
FirebaseAuth.getInstance().getCurrentUser().getEmail(),
textField.getText().toString()));
textField.setText("");
}
});
//Пользователь ещё не авторизован
if (FirebaseAuth.getInstance().getCurrentUser()==null)
startActivityForResult(AuthUI.getInstance().createSignInIntentBuilder().build(), SIGN_IN_CODE);
//Пользователь авторизован
else {
Snackbar.make(activity_main, "You are authorized", Snackbar.LENGTH_LONG).show();
displayAllMessages();
}
}
@Override
protected void onStart() {
super.onStart();
adapter.startListening();
}
private void displayAllMessages() {
ListView listOfMessages = findViewById(R.id.list_of_messages);
FirebaseListOptions<Message> options =
new FirebaseListOptions.Builder<Message>()
.setQuery(FirebaseDatabase.getInstance().getReference(), Message.class)
.setLayout(R.layout.list_item)
.build();
adapter = new FirebaseListAdapter<Message>(options){
@Override
protected void populateView(View v, Message model, int position) {
TextView mess_user, mess_time;
BubbleTextView mess_text;
mess_user = v.findViewById(R.id.message_user);
mess_time = v.findViewById(R.id.message_time);
mess_text = v.findViewById(R.id.message_text);
mess_user.setText(model.getUserName());
mess_text.setText(model.getTextMessage());
mess_time.setText(DateFormat.format("dd-MM-yyyy HH:mm:ss", model.getMessageTime()));
}
};
listOfMessages.setAdapter(adapter);
}
@Override
protected void onStop() {
super.onStop();
adapter.stopListening();
}
}
消息类别
public class Message {
private String UserName;
private String TextMessage;
private long MessageTime;
public Message() {}
public Message (String UserName, String TextMessage){
this.UserName = UserName;
this.TextMessage = TextMessage;
this.MessageTime = new Date().getTime();
}
public String getUserName() {
return UserName;
}
public void setUserName(String userName) {
UserName = userName;
}
public String getTextMessage() {
return TextMessage;
}
public void setTextMessage(String textMessage) {
TextMessage = textMessage;
}
public long getMessageTime() {
return MessageTime;
}
public void setMessageTime(long messageTime) {
MessageTime = messageTime;
}
}
主要XML
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity"
android:id="@+id/activity_main">
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="@+id/btnSend"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:clickable="true"
android:src="@drawable/ic_send_button"
android:layout_alignParentBottom="true"
android:layout_alignParentEnd="true"
app:fabSize="normal">
</com.google.android.material.floatingactionbutton.FloatingActionButton>
<com.google.android.material.textfield.TextInputLayout
android:id="@+id/text_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentStart="true"
android:layout_toLeftOf="@id/btnSend"
>
<EditText
android:id="@+id/messageField"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint=" Message..."
/>
</com.google.android.material.textfield.TextInputLayout>
<ListView
android:id="@+id/list_of_messages"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="@id/text_layout"
android:layout_alignParentTop="true"
android:layout_alignParentStart="true"
android:divider="@android:color/transparent"
android:dividerHeight="12dp"
android:layout_marginBottom="5dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:stackFromBottom="true"
android:transcriptMode="alwaysScroll">
</ListView>
</RelativeLayout>
消息气泡的XML
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_alignParentStart="true"
android:id="@+id/message_user"
android:textStyle="normal|bold"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:id="@+id/message_time"
/>
<com.github.library.bubbleview.BubbleTextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:id="@+id/message_text"
android:layout_marginTop="9dp"
android:layout_below="@id/message_user"
android:textSize="18sp"
android:textAppearance="@style/TextAppearance.AppCompat.Body1"
android:textColor="#fff"
android:padding="10dp"
app:angle="10dp"
app:arrowWidth="8dp"
app:arrowHeight="10dp"
app:arrowPosition="10dp"
app:bubbleColor="#03dac5"
/>
</RelativeLayout>
推荐答案
每个用户都会收到一封唯一的电子邮件-在示例中说-d@mail.ru是您的电子邮件.您需要添加用户逻辑来动态检查，以决定是否要将气泡测试布局设置为LEFT或RIGHT.
Every user will have a unique email - Let say here in the example - d@mail.ru is your email. You need to add user logic to dynamically check to decide whether you want a bubble test layout to be LEFT or RIGHT.
更新消息气泡布局.
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/parentLayout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_alignParentStart="true"
android:id="@+id/message_user"
android:textStyle="normal|bold"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:id="@+id/message_time"
/>
<com.github.library.bubbleview.BubbleTextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:id="@+id/message_text"
android:layout_marginTop="9dp"
android:layout_below="@id/message_user"
android:textSize="18sp"
android:textAppearance="@style/TextAppearance.AppCompat.Body1"
android:textColor="#fff"
android:padding="10dp"
app:angle="10dp"
app:arrowWidth="8dp"
app:arrowHeight="10dp"
app:arrowPosition="10dp"
app:bubbleColor="#03dac5"
/>
</RelativeLayout>
适配器代码:-您可以根据需要向左或向右更新.
Adapter code:- you can update as you need either LEFT or RIGHT.
adapter = new FirebaseListAdapter<Message>(options){
@Override
protected void populateView(View v, Message model, int position) {
TextView mess_user, mess_time;
BubbleTextView mess_text;
RelativeLayout Layout = v.findViewById(R.id.parentlayout);
mess_user = v.findViewById(R.id.message_user);
mess_time = v.findViewById(R.id.message_time);
mess_text = v.findViewById(R.id.message_text);
mess_user.setText(model.getUserName());
mess_text.setText(model.getTextMessage());
mess_time.setText(DateFormat.format("dd-MM-yyyy HH:mm:ss", model.getMessageTime()));
if(!model.getUserName().equals("d@mail.ru")) {
mess_text.setGravity(Gravity.LEFT)
} else {
mess_text.setGravity(Gravity.RIGHT)
}
}
};
Check this link as a reference - https://github.com/rpadma/Trip-Planner/blob/master/app/src/main/java/com/etuloser/padma/rohit/homework09a/ChatAdapter.java
这篇关于如何使消息出现在不同的侧面?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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