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I’m opening this discussion because I need help for a school project.
At the moment, I have a scrollable activity with some buttons, everything is built like this:
a constraint layout, with SearchView, ScrollView and a BottomNavigationBar, and inside the ScrollView there’s a LinearLayout with all my buttons.
Here is the full xml file:
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:tools="http://schemas.android.com/tools"
android:layout_height="match_parent"
android:layout_width="match_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<SearchView
android:id="@+id/BarraRicerca"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_marginTop="10dp"
android:gravity="top"
android:iconifiedByDefault="false"
android:imeOptions="actionDone"
android:queryHint="Cerca un tutorial"
android:labelFor="@id/BarraRicerca"
android:suggestionRowLayout="@color/white"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<ScrollView
android:id="@+id/scrollView2"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentTop="true"
android:layout_weight="1"
android:fillViewport="false"
android:orientation="vertical"
android:padding="10dp"
android:layout_marginTop="60dp"
app:layout_constraintBottom_toTopOf="@id/BottomBar"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/BarraRicerca">
<LinearLayout
android:id="@+id/Linearlayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.example.Flipper.FlipperList">
<Button
android:id="@+id/FlintstonesF"
android:layout_width="300dp"
android:layout_height="49dp"
android:layout_gravity="center_horizontal"
android:layout_margin="100dp"
android:text="Flintstones" />
<Button
android:id="@+id/tutorial2"
android:layout_width="300dp"
android:layout_height="49dp"
android:layout_gravity="center_horizontal"
android:layout_margin="200dp"
android:layout_weight="1"
android:text="ciao" />
<Button
android:id="@+id/tutorial3"
android:layout_width="300dp"
android:layout_height="49dp"
android:layout_gravity="center_horizontal"
android:layout_margin="100dp"
android:layout_weight="1"
android:text="hello" />
</LinearLayout>
</ScrollView>
<com.google.android.material.bottomnavigation.BottomNavigationView
android:id="@+id/BottomBar"
android:layout_width="0dp"
android:layout_height="60dp"
android:layout_marginStart="0dp"
android:layout_marginEnd="0dp"
android:layout_gravity="bottom"
android:background="?android:attr/windowBackground"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintBottom_toBottomOf="parent"/>
</androidx.constraintlayout.widget.ConstraintLayout>
and the result is this, everything works
Now I need to implement the SearchView to actually search through my buttons, For example if I search Flintstones (or Flint, or Fli etc.) I want the Flintstones button to be the only one shown. The same goes for “ciao” and so on, I will obviously have more buttons than these.
I tried every possible solution I found on the internet but nothing seems to work. This is my code
package com.example.Flipper
import android.content.Intent
import android.os.Bundle
import android.view.View
import android.widget.*
import androidx.appcompat.app.AppCompatActivity
import androidx.core.view.isVisible
import com.example.pinballacademy.R
class FlipperList : AppCompatActivity() {
val passaFlintstones: Button get() = findViewById(R.id.FlintstonesF)
val bottone2: Button get() = findViewById(R.id.tutorial2)
val bottone3: Button get() = findViewById(R.id.tutorial3)
val searchbar: SearchView get() = findViewById(R.id.BarraRicerca)
val linLay: LinearLayout get() = findViewById(R.id.Linearlayout)
var listaFlipper: ArrayList<String> = ArrayList()
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_flipper_list)
/* listaFlipper.clear();
listaFlipper.add(passaFlintstones.text.toString())
listaFlipper.add(bottone2.text.toString())
listaFlipper.add(bottone3.text.toString())*/
searchbar.isSubmitButtonEnabled=true
searchbar.setOnQueryTextListener() {
fun onQueryTextChange(newText: String?): Boolean {
filter(newText)
return true
}
fun onQueryTextSubmit(query: String?): Boolean {
filter(query)
return true
}
// Do your task here
}
passaFlintstones.setOnClickListener()
{
val intent = Intent(this, FlintstonesScheda::class.java)
//avvia registrazione
startActivity(intent)
// finish()
}
}
fun filter(searchText: String?) {
for (i in 0 until linLay.childCount) {
val button: Button = linLay.getChildAt(i) as Button
if (button.text.toString().contains(searchText!!)) {
button.isVisible=true
} else button.isVisible=false
}
}
private fun SearchView.setOnQueryTextListener(function: () -> Unit) {
}
}
As you can see I’m not even near to a solution, I hope you can help! Thank you!
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