我正在使用套接字io发送事件，我遇到诸如打字，在线，离线等事件，但是在android应用中，当我尝试更改特定事件的文本视图文本时，出现android.view.ViewRootImpl $错误CalledFromWrongThreadException：只有创建视图层次结构的原始线程才能触摸其视图。
`包com.example.chatapplication;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.app.AppCompatDelegate;
import androidx.core.content.ContextCompat;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.os.Handler;
import android.os.StrictMode;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.Base64;
import android.util.Log;
import android.view.View;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.TextView;
import com.bumptech.glide.Glide;
import com.example.chatapplication.Models.Freind;
import com.example.chatapplication.Models.User;
import com.github.nkzawa.emitter.Emitter;
import com.github.nkzawa.socketio.client.IO;
import com.github.nkzawa.socketio.client.Socket;
import com.vanniktech.emoji.EmojiManager;
import com.vanniktech.emoji.EmojiPopup;
import com.vanniktech.emoji.EmojiProvider;
import com.vanniktech.emoji.ios.IosEmojiProvider;
import org.json.JSONObject;
import java.io.UnsupportedEncodingException;
import java.util.Timer;
import java.util.TimerTask;
import static android.app.UiModeManager.MODE_NIGHT_AUTO;
public class ChatActivity extends AppCompatActivity {
Freind freind;
String token;
ImageView freindProfileImageView,sendButtonImageView;
TextView freindNameTextView,freindStatusTextView;
EditText editText;
Socket socket;
User user;
boolean isOnline;
private static final String TAG = "ChatActivity";
long delay = 2000;
long lastTextEdit = 0;
Handler handler = new Handler();
private Runnable inputFinishChecker = new Runnable() {
@Override
public void run() {
if (System.currentTimeMillis() > (lastTextEdit + delay - 500)){
try{
Log.d(TAG, "Stopped typing call: " + freind.getId());
final JSONObject jsonObject = new JSONObject();
jsonObject.put("toId",freind.getId());
socket.emit("stop-typing",jsonObject);
}
catch (Exception e){
e.printStackTrace();
}
}
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_chat);
String url = getString(R.string.protocol) + "://" + getString(R.string.host) + ":" + getString(R.string.SOCKET_PORT);
try {
socket = IO.socket(url);
editText = findViewById(R.id.messageEditText);
freindProfileImageView = findViewById(R.id.freindProfileImageView);
freindNameTextView = findViewById(R.id.freindNameTextView);
freindStatusTextView = findViewById(R.id.freindStatusTextView);
sendButtonImageView = findViewById(R.id.sendButton);
Intent intent = getIntent();
if (intent.hasExtra("freind")){
freind = (Freind) intent.getSerializableExtra("freind");
}
SharedPreferences sharedPreferences = getApplicationContext().getSharedPreferences("authData",0);
token = sharedPreferences.getString("token","null");
if (token.equals("null")){
finish();
}
String decodedToken = decoded(token);
JSONObject jsonObject = new JSONObject(decodedToken);
JSONObject user1 = jsonObject.getJSONObject("user");
user = new User(user1.getString("id"),user1.getString("name"),user1.getString("email"),user1.getString("username"),user1.getString("profileUrl"),"","");
int length = user.getProfileUrl().length();
user.setProfileUrl("https://" + user.getProfileUrl().substring(2,length));
sendButtonImageView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String message = editText.getText().toString().trim();
if (message.equals("")){
}
else{
}
}
});
init();
EmojiManager.install(new IosEmojiProvider());
}
catch (Exception e){
e.printStackTrace();
}
}
private void init(){
Glide.with(this).load(freind.getProfileUrl()).into(freindProfileImageView);
freindNameTextView.setText(freind.getName());
try{
JSONObject jsonObject = new JSONObject();
jsonObject.put("id",freind.getId());
socket.emit("isOnline",jsonObject);
}
catch (Exception e){
e.printStackTrace();
}
socket.on("online", new Emitter.Listener() {
@Override
public void call(Object... args) {
try {
JSONObject jsonObject = (JSONObject) args[0];
Log.d(TAG, "call: " + jsonObject);
JSONObject userObject = jsonObject.getJSONObject("user");
String id = userObject.getString("id");
if (id.equals(freind.getId())){
freindStatusTextView.setText("Online");
freindStatusTextView.setTextColor(ContextCompat.getColor(ChatActivity.this,R.color.gray));
}
}
catch (Exception e){
e.printStackTrace();
}
}
});
socket.on("isOnline", new Emitter.Listener() {
@Override
public void call(Object... args) {
try{
JSONObject jsonObject = (JSONObject) args[0];
String id = jsonObject.getString("id");
if (id.equals(freind.getId())){
freindStatusTextView.setText("Online");
freindStatusTextView.setTextColor(ContextCompat.getColor(ChatActivity.this,R.color.gray));
isOnline = true;
}
}
catch (Exception e){
e.printStackTrace();
}
}
});
socket.on("isOffline", new Emitter.Listener() {
@Override
public void call(Object... args) {
try{
JSONObject jsonObject = (JSONObject) args[0];
String id = jsonObject.getString("id");
if (id.equals(freind.getId())){
freindStatusTextView.setText("Offline");
freindStatusTextView.setTextColor(ContextCompat.getColor(ChatActivity.this,R.color.gray));
isOnline = false;
}
}
catch (Exception e){
e.printStackTrace();
}
}
});
socket.on("offline", new Emitter.Listener() {
@Override
public void call(Object... args) {
try {
JSONObject jsonObject = (JSONObject) args[0];
String id = jsonObject.getString("id");
if (id.equals(freind.getId())){
freindStatusTextView.setText("Offline");
freindStatusTextView.setTextColor(ContextCompat.getColor(ChatActivity.this,R.color.gray));
isOnline = false;
}
}
catch (Exception e){
e.printStackTrace();
}
}
});
editText.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
@Override
public void afterTextChanged(Editable s) {
try {
if (s.length() > 0){
Log.d(TAG, "call: " + freind.getId());
final JSONObject jsonObject = new JSONObject();
jsonObject.put("toId",freind.getId());
socket.emit("typing",jsonObject);
lastTextEdit = System.currentTimeMillis();
handler.postDelayed(inputFinishChecker,delay);
}
}
catch (Exception e){
e.printStackTrace();
}
}
});
socket.on("typing", new Emitter.Listener() {
@Override
public void call(Object... args) {
try{
Log.d(TAG, "call: " + freind.getId());
JSONObject jsonObject = (JSONObject) args[0];
String id = jsonObject.getString("id");
Log.d(TAG, "call: Typing " + id);
if (id.equals(freind.getId())){
freindStatusTextView.setText("typing...");
freindStatusTextView.setTextColor(ContextCompat.getColor(ChatActivity.this,R.color.green));
}
}
catch (Exception e){
e.printStackTrace();
}
}
});
socket.on("stop-typing", new Emitter.Listener() {
@Override
public void call(Object... args) {
try{
Log.d(TAG, "Stop call: " + freind.getId());
JSONObject jsonObject = (JSONObject) args[0];
String id = jsonObject.getString("id");
Log.d(TAG, "call: Stop Typing " + id);
if (id.equals(freind.getId())){
if (isOnline){
freindStatusTextView.setText("Online");
freindStatusTextView.setTextColor(ContextCompat.getColor(ChatActivity.this,R.color.gray));
}
else{
freindStatusTextView.setText("Online");
freindStatusTextView.setTextColor(ContextCompat.getColor(ChatActivity.this,R.color.gray));
}
}
}
catch (Exception e){
e.printStackTrace();
}
}
});
}
private static String[] split;
public static String decoded(String JWTEncoded) throws Exception {
try {
split = JWTEncoded.split("\\.");
} catch (Exception e) {
//Error
}
return getJson(split[1]);
}
private static String getJson(String strEncoded) throws UnsupportedEncodingException {
byte[] decodedBytes = Base64.decode(strEncoded, Base64.URL_SAFE);
return new String(decodedBytes, "UTF-8");
}
}
`