我是一个初学者的Android开发人员，我写了这个代码有关的网络服务，但这个程序没有输出（我没有得到任何错误）。我敢肯定，API是正确的，但它没有显示任何文本视图。当应用程序在设备上运行，互联网是开着的。
维护活动：

class MainActivity : AppCompatActivity() {
  lateinit var binding : ActivityMainBinding
  override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    binding = DataBindingUtil.setContentView(this,R.layout.activity_main)
    binding.button.setOnClickListener(){
        get()

    }

}
fun get() {
    var cityname = binding.editTextTextPersonName.text.toString()
    val endpoint = "http://api.weatherapi.com/v1/current.json? ****** &q=ya&aqi=no"
    myAsyncTask().execute(endpoint)

}
    inner class myAsyncTask : AsyncTask<String, String, String>() {

        override fun doInBackground(vararg params: String?): String {
            try {

                val url = URL(params[0])
                val urlconnect=url.openConnection() as HttpURLConnection
                urlconnect.connectTimeout=100000
                val instring=convertsteamtoString(urlconnect.inputStream)
                publishProgress(instring)

            }catch (ex:Exception){}
            return ""
        }

        override fun onProgressUpdate(vararg values: String) {
            try {
               
                val json =JSONObject(values[0])
                var current=json.getJSONObject("current")
                var temp_c =current.getString("temp_c")
                 binding.textviewtemperature.text=temp_c

            }catch (ex:Exception){}

        }
        fun convertsteamtoString(inputStream :InputStream):String{

            val bufferReader =BufferedReader(InputStreamReader(inputStream))
            var line:String
            var allString :String =""
            try {
                do{
                    line = bufferReader.readLine()
                    allString += line

                }while (line != null)
            }catch (ex:Exception){}
            return allString

        }
    }

}
机器人清单：

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     package="com.example.webservice">
     <uses-permission android:name="android.permission.INTERNET"/>

<application
    android:allowBackup="true"
    android:dataExtractionRules="@xml/data_extraction_rules"
    android:fullBackupContent="@xml/backup_rules"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:roundIcon="@mipmap/ic_launcher_round"
    android:supportsRtl="true"
    android:theme="@style/Theme.WebService"
    tools:targetApi="31">
    <activity
        android:name=".MainActivity"
        android:exported="true">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
</application>