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android listview search filter custom adapter kotlin

By Quaint QuaggaQuaint Quagga on Jun 05, 2020
override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_main)

    val poisArray = listOf(
        // See previous sections
    )
    val adapter = PoiAdapter(this, android.R.layout.simple_list_item_1, poisArray)
    autoCompleteTextView.setAdapter(adapter)
    autoCompleteTextView.threshold = 3

    autoCompleteTextView.setOnItemClickListener() { parent, _, position, id ->
        val selectedPoi = parent.adapter.getItem(position) as PoiDao?
        autoCompleteTextView.setText(selectedPoi?.name)
    }
}

Source: spapas.github.io

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android listview search filter custom adapter kotlin

By Quaint QuaggaQuaint Quagga on Jun 05, 2020
override fun getFilter(): Filter {
    return object : Filter() {
        override fun publishResults(charSequence: CharSequence?, filterResults: Filter.FilterResults) {
            mPois = filterResults.values as List<PoiDao>
            notifyDataSetChanged()
        }

        override fun performFiltering(charSequence: CharSequence?): Filter.FilterResults {
            val queryString = charSequence?.toString()?.toLowerCase()

            val filterResults = Filter.FilterResults()
            filterResults.values = if (queryString==null || queryString.isEmpty())
                allPois
            else
                allPois.filter {
                    it.name.toLowerCase().contains(queryString) ||
                    it.city.toLowerCase().contains(queryString) ||
                    it.category_name.toLowerCase().contains(queryString)
                }
            return filterResults
        }
    }
}

Source: spapas.github.io

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android listview search filter custom adapter kotlin

By Quaint QuaggaQuaint Quagga on Jun 05, 2020
inner class PoiAdapter(context: Context, @LayoutRes private val layoutResource: Int, private val allPois: List<PoiDao>):
    ArrayAdapter<PoiDao>(context, layoutResource, allPois),
    Filterable {
    private var mPois: List<PoiDao> = allPois

    override fun getCount(): Int {
        return mPois.size
    }

    override fun getItem(p0: Int): PoiDao? {
        return mPois.get(p0)
    }

    override fun getItemId(p0: Int): Long {
        // Or just return p0
        return mPois.get(p0).id.toLong()
    }

    override fun getView(position: Int, convertView: View?, parent: ViewGroup?): View {
        val view: TextView = convertView as TextView? ?: LayoutInflater.from(context).inflate(layoutResource, parent, false) as TextView
        view.text = "${mPois[position].name} ${mPois[position].city} (${mPois[position].category_name})"
        return view
    }

    override fun getFilter(): Filter {
        // See next section
    }
}

Source: spapas.github.io

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android listview search filter custom adapter kotlin

By Quaint QuaggaQuaint Quagga on Jun 05, 2020
val poisArray = listOf(
    PoiDao(1, "Taco Bell", "Athens", "Restaurant"),
    PoiDao(2, "McDonalds", "Athens","Restaurant"),
    PoiDao(3, "KFC", "Piraeus", "Restaurant"),
    PoiDao(4, "Shell", "Lamia","Gas Station"),
    PoiDao(5, "BP", "Thessaloniki", "Gas Station")
)

Source: spapas.github.io

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android listview search filter custom adapter kotlin

By Quaint QuaggaQuaint Quagga on Jun 05, 2020
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        android:orientation="vertical"
        android:layout_width="match_parent" android:layout_height="match_parent"
        tools:context=".MainActivity">
    <TextView
            android:layout_width="match_parent" android:layout_height="wrap_content"
            android:text="Hello World!"
            android:textSize="32sp"
            android:textAlignment="center"/>
    <AutoCompleteTextView
            android:layout_marginTop="32dip"
            android:layout_width="match_parent" android:layout_height="wrap_content"
            android:id="@+id/autoCompleteTextView"/>
</LinearLayout>

Source: spapas.github.io

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