I coding in kotlin language. I have two simple apps. The first I made month ago and the second day ago. I try to show response in textView. I use okhttp3. In the first app it works ok. In the second don’t work. My code is same. But when I delete old textView in first app new textView don’t work. What do I do wrong?
The first app:
File .kt is the same with second app
LoginActivity.kt
`
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.widget.Button
import android.widget.TextView
import kotlinx.android.synthetic.main.activity_login.*
import okhttp3.*
import java.io.IOException
class LoginActivity : AppCompatActivity() {
private val client = OkHttpClient()
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_login)
login.setOnClickListener {
run("https://ccdb.eyca.org/api/ping?type=xml")
}
}
fun run(url: String){
val request = Request.Builder().url(url).build()
client.newCall(request).enqueue(object : Callback{
override fun onFailure(call: Call, e: IOException) {
textView3.setText("failure")
e.printStackTrace()
}
override fun onResponse(call: Call, response: Response) =
textView3.setText(response.body()?.string())
})
}
}`
activity_login.xml (The first app what is ok)
`
<androidx.constraintlayout.widget.ConstraintLayout 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=“.LoginActivity”>
<Button
android:id="@+id/login"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.498"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.499" />
<TextView
android:id="@+id/textView3"
android:layout_width="0dp"
android:layout_height="0dp"
android:text="TextView"
app:layout_constraintBottom_toTopOf="@+id/login"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>`
Can somebody help with it?
In the second app
I get this in logcat:
E/AndroidRuntime: FATAL EXCEPTION: OkHttp Dispatcher
Process: ru.agatech.myapplication, PID: 24173
android.view.ViewRootImpl$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.
at android.view.ViewRootImpl.checkThread(ViewRootImpl.java:8191)
at android.view.ViewRootImpl.requestLayout(ViewRootImpl.java:1420)
at android.view.View.requestLayout(View.java:24454)
at android.view.View.requestLayout(View.java:24454)
at android.view.View.requestLayout(View.java:24454)
at android.view.View.requestLayout(View.java:24454)
at android.view.View.requestLayout(View.java:24454)
at android.view.View.requestLayout(View.java:24454)
at androidx.constraintlayout.widget.ConstraintLayout.requestLayout(ConstraintLayout.java:3172)
at android.view.View.requestLayout(View.java:24454)
at android.widget.TextView.checkForRelayout(TextView.java:9681)
at android.widget.TextView.setText(TextView.java:6269)
at android.widget.TextView.setText(TextView.java:6097)
at android.widget.TextView.setText(TextView.java:6049)
at ru.agatech.myapplication.MainActivity$run$1.onResponse(MainActivity.kt:31)
at okhttp3.RealCall$AsyncCall.execute(RealCall.java:206)
at okhttp3.internal.NamedRunnable.run(NamedRunnable.java:32)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at java.lang.Thread.run(Thread.java:
But in the first app i didn’t override thread. When I tried to runOnUiThread in the second app it keep not work.
