I'm trying to make a quiz app where you click the plus button to add a quiz. A button pops up on the screen and you can click that to either play or edit the quiz. When I click the newly created button once its fine but the second time I click it, the app crashes. Does anyone have any idea how I can fix this error specifically?
Main Activity page:
package com.example.k_ari
import android.content.Intent
import android.graphics.Color
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.util.Log
import android.view.Gravity
import android.view.ViewGroup
import android.widget.Button
import android.widget.EditText
import android.widget.LinearLayout
import androidx.appcompat.app.AlertDialog
import com.google.android.material.floatingactionbutton.FloatingActionButton
class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
showEditTextDialogue()
}
private fun showEditTextDialogue() {
val btn = findViewById<FloatingActionButton>(R.id.btn)
btn.setOnClickListener{
val inflator = layoutInflater
val layout = findViewById<LinearLayout>(R.id.mainlayout)
val dialogLayout = inflator.inflate(R.layout.edit_text_layout, null)
val editText = dialogLayout.findViewById<EditText>(R.id.et_editText)
val builder = AlertDialog.Builder(this)
val newbutton = Button(this@MainActivity)
val btnintent = Intent(this, Newbtn::class.java)
val dialogLayout2 = inflator.inflate(R.layout.new_button_option, null)
newbutton.layoutParams = LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT)
newbutton.width=1010
newbutton.height=300
newbutton.gravity = Gravity.CENTER
newbutton.translationX= 65F
newbutton.setTextColor(Color.parseColor("#FFFFFFFF"))
newbutton.setBackgroundColor(Color.parseColor("#250A43"))
with(builder) {
setTitle("Title:")
setPositiveButton("Ok"){dialog, which ->
layout.addView(newbutton)
newbutton.text = editText.text.toString()
}
setNegativeButton("Cancel"){dialog, which ->
Log.d("Main", "Negative button clicked")
}
setView(dialogLayout)
show()
}
newbutton.setOnClickListener{
with(builder){
setPositiveButton("Play"){dialog, which ->
startActivity(btnintent)
}
setPositiveButton("Edit"){dialog, which ->
startActivity(btnintent)
}
setView(dialogLayout2)
show()
}
}
}
}}
Xml file:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
android:orientation="vertical"
tools:context=".MainActivity">
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="@+id/btn"
android:layout_width="wrap_content"
android:layout_height="56dp"
android:backgroundTint="#250A43"
android:backgroundTintMode="add"
android:clickable="true"
android:contentDescription="@string/todo"
android:tint="#250A43"
android:translationX="280dp"
android:translationY="580dp"
app:backgroundTint="#250A43"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.56"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:rippleColor="#FFFFFF"
app:srcCompat="@android:drawable/ic_input_add"
android:focusable="true" />
<ScrollView
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="match_parent"
android:id="@+id/mainlayout"
android:layout_height="wrap_content"
android:orientation="vertical">
</LinearLayout>
</ScrollView>
</LinearLayout>
Logcat:
2020-12-28 13:48:47.521 26648-26648/com.example.k_ari E/AndroidRuntime: FATAL EXCEPTION: main Process: com.example.k_ari, PID: 26648 java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first. at android.view.ViewGroup.addViewInner(ViewGroup.java:5458) at android.view.ViewGroup.addView(ViewGroup.java:5277) at android.view.ViewGroup.addView(ViewGroup.java:5249) at androidx.appcompat.app.AlertController.setupCustomContent(AlertController.java:657) at androidx.appcompat.app.AlertController.setupView(AlertController.java:475) at androidx.appcompat.app.AlertController.installContent(AlertController.java:233) at androidx.appcompat.app.AlertDialog.onCreate(AlertDialog.java:279) at android.app.Dialog.dispatchOnCreate(Dialog.java:708) at android.app.Dialog.show(Dialog.java:422) at androidx.appcompat.app.AlertDialog$Builder.show(AlertDialog.java:1009) at com.example.k_ari.MainActivity$showEditTextDialogue$1$2.onClick(MainActivity.kt:66) at android.view.View.performClick(View.java:8178) at android.widget.TextView.performClick(TextView.java:16104) at android.view.View.performClickInternal(View.java:8147) at android.view.View.access$3700(View.java:888) at android.view.View$PerformClick.run(View.java:30233) at android.os.Handler.handleCallback(Handler.java:938) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:246) at android.app.ActivityThread.main(ActivityThread.java:8414) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:596) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1130)
