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MainActivityChat.java
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MainActivityChat.java
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package com.example.chat;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;
import androidx.appcompat.app.AppCompatActivity;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.scaledrone.lib.Listener;
import com.scaledrone.lib.Room;
import com.scaledrone.lib.RoomListener;
import com.scaledrone.lib.Scaledrone;
import java.util.Random;
public class MainActivityChat extends AppCompatActivity implements
RoomListener {
private String channelID = "1JAYA7BDM9f9ypXX";
private String secretKey = "gJ2lbisHnnmVue9xncVzmuCZzoMCf3J5";
private String roomName = "observable-room";
public String roomDisplayName = "General Room";
private EditText editText;
private Scaledrone scaledrone;
private MessageAdapter messageAdapter;
private ListView messagesView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_mainchat);
Intent intent = getIntent();
String roomNameCustom = intent.getExtras().getString("chatroomname");
if (roomNameCustom != null) {
roomName = "observable-" + roomNameCustom;
roomDisplayName = roomNameCustom;
}
((TextView)findViewById(R.id.thischatname)).setText(roomDisplayName);
editText = (EditText) findViewById(R.id.editText);
messageAdapter = new MessageAdapter(this);
messagesView = (ListView) findViewById(R.id.messages_view);
messagesView.setAdapter(messageAdapter);
MemberData data = new MemberData(getRandomName(), getRandomColor());
scaledrone = new Scaledrone(channelID, data);
scaledrone.connect(new Listener() {
@Override
public void onOpen() {
System.out.println("Scaledrone connection open");
scaledrone.subscribe(roomName, MainActivityChat.this);
}
@Override
public void onOpenFailure(Exception ex) {
System.err.println(ex);
}
@Override
public void onFailure(Exception ex) {
System.err.println(ex);
}
@Override
public void onClosed(String reason) {
System.err.println(reason);
}
});
}
public void sendMessage(View view) {
String message = editText.getText().toString();
if (message.length() > 0) {
scaledrone.publish(roomName, message);
editText.getText().clear();
}
}
@Override
public void onOpen(Room room) {
System.out.println("Conneted to room");
}
@Override
public void onOpenFailure(Room room, Exception ex) {
System.err.println(ex);
}
@Override
public void onMessage(Room room, com.scaledrone.lib.Message receivedMessage) {
final ObjectMapper mapper = new ObjectMapper();
try {
final MemberData data = mapper.treeToValue(receivedMessage.getMember().getClientData(), MemberData.class);
boolean belongsToCurrentUser = receivedMessage.getClientID().equals(scaledrone.getClientID());
final Message message = new Message(receivedMessage.getData().asText(), data, belongsToCurrentUser);
runOnUiThread(new Runnable() {
@Override
public void run() {
messageAdapter.add(message);
messagesView.setSelection(messagesView.getCount() - 1);
}
});
} catch (JsonProcessingException e) {
e.printStackTrace();
}
}
private String getRandomName() {
String[] adjs = {"autumn", "hidden", "bitter", "misty", "silent", "empty", "dry", "dark", "summer", "icy", "delicate", "quiet", "white", "cool", "spring", "winter", "patient", "twilight", "dawn", "crimson", "wispy", "weathered", "blue", "billowing", "broken", "cold", "damp", "falling", "frosty", "green", "long", "late", "lingering", "bold", "little", "morning", "muddy", "old", "red", "rough", "still", "small", "sparkling", "throbbing", "shy", "wandering", "withered", "wild", "black", "young", "holy", "solitary", "fragrant", "aged", "snowy", "proud", "floral", "restless", "divine", "polished", "ancient", "purple", "lively", "nameless"};
String[] nouns = {"waterfall", "river", "breeze", "moon", "rain", "wind", "sea", "morning", "snow", "lake", "sunset", "pine", "shadow", "leaf", "dawn", "glitter", "forest", "hill", "cloud", "meadow", "sun", "glade", "bird", "brook", "butterfly", "bush", "dew", "dust", "field", "fire", "flower", "firefly", "feather", "grass", "haze", "mountain", "night", "pond", "darkness", "snowflake", "silence", "sound", "sky", "shape", "surf", "thunder", "violet", "water", "wildflower", "wave", "water", "resonance", "sun", "wood", "dream", "cherry", "tree", "fog", "frost", "voice", "paper", "frog", "smoke", "star"};
return (
adjs[(int) Math.floor(Math.random() * adjs.length)] +
"_" +
nouns[(int) Math.floor(Math.random() * nouns.length)]
);
}
private String getRandomColor() {
Random r = new Random();
StringBuffer sb = new StringBuffer("#");
while(sb.length() < 7){
sb.append(Integer.toHexString(r.nextInt()));
}
return sb.toString().substring(0, 7);
}
}
class MemberData {
private String name;
private String color;
public MemberData(String name, String color) {
this.name = name;
this.color = color;
}
public MemberData() {
}
public String getName() {
return name;
}
public String getColor() {
return color;
}
@Override
public String toString() {
return "MemberData{" +
"name='" + name + '\'' +
", color='" + color + '\'' +
'}';
}
}