如何使用edittext和voice搜索搜索recyclerview?

vsnjm48y  于 2021-09-13  发布在  Java
关注(0)|答案(0)|浏览(316)

我在search_header_layout.xml文件中使用了三个imageview和一个edittext。用于设计目的的第一个imageview。第二个imageview id为clear\u search\u query,用于清除edittext(edittext.settext(“”),第三个imageview id为voice\u search\u query,用于在recyclerview中使用voice search。我的edittext id是search\u edit\u text这是为在recyclerview中使用搜索而设计的。
heare是我的search_header_layout.xml文件代码:-

<?xml version="1.0" encoding="utf-8"?>
<com.google.android.material.card.MaterialCardView 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:id="@+id/search_card_view"
    android:layout_width="match_parent"
    android:layout_height="?attr/actionBarSize"
    android:layout_marginHorizontal="12dp"
    android:layout_marginVertical="8dp"
    app:cardCornerRadius="12dp"
    app:cardElevation="16dp"
    app:layout_constraintTop_toTopOf="parent">

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <ImageView
            android:id="@+id/search_image_view"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="16dp"
            android:src="@drawable/ic_search"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            tools:ignore="ContentDescription" />

        <ImageView
            android:id="@+id/clear_search_query"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginEnd="8dp"
            android:background="?attr/selectableItemBackground"
            android:padding="8dp"
            android:src="@drawable/ic_clear"
            android:visibility="invisible"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            tools:ignore="ContentDescription" />

        <ImageView
            android:id="@+id/voice_search_query"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginEnd="8dp"
            android:background="?attr/selectableItemBackground"
            android:padding="8dp"
            android:src="@drawable/ic_mic"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            tools:ignore="ContentDescription" />

        <androidx.appcompat.widget.AppCompatEditText
            android:id="@+id/search_edit_text"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginHorizontal="24dp"
            android:background="@android:color/transparent"
            android:hint="@string/search_articles_hint"
            android:inputType="text"
            android:paddingTop="8dp"
            android:textAppearance="?attr/textAppearanceHeadline6"
            app:layout_constraintBottom_toBottomOf="@id/search_image_view"
            app:layout_constraintEnd_toStartOf="@id/voice_search_query"
            app:layout_constraintStart_toEndOf="@id/search_image_view" />

    </androidx.constraintlayout.widget.ConstraintLayout>

</com.google.android.material.card.MaterialCardView>

heare是我的activity_main.xml文件代码:-

<?xml version="1.0" encoding="utf-8"?>
<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"
    android:fitsSystemWindows="true"
    tools:context=".MainActivity">

    <include
        android:id="@+id/search_box_container"
        layout="@layout/search_header_layout" />

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/search_list"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_marginTop="8dp"
        app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintTop_toBottomOf="@id/search_box_container"
        tools:itemCount="12"
        tools:listitem="@layout/item_search" />

    <TextView
        android:id="@+id/no_search_results_found_text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/no_search_results_found"
        android:textAppearance="?attr/textAppearanceHeadline4"
        android:visibility="invisible"
        app:layout_constraintBottom_toBottomOf="@id/search_list"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="@id/search_list" />

</androidx.constraintlayout.widget.ConstraintLayout>

我发现kotlin代码的用途相同,但我不理解kotlin,我需要使用java
以下是mainactivity.kt代码:-

package com.developersbreach.simplesearchapp

import android.app.Activity
import android.content.Intent
import android.os.Bundle
import android.speech.RecognizerIntent
import android.view.View
import android.widget.ImageView
import android.widget.TextView
import androidx.appcompat.app.AppCompatActivity
import androidx.appcompat.widget.AppCompatEditText
import androidx.core.widget.doOnTextChanged
import androidx.recyclerview.widget.RecyclerView
import java.util.*
import kotlin.collections.ArrayList

class MainActivity : AppCompatActivity(), SearchAdapter.SportsAdapterListener {

    private lateinit var recyclerView: RecyclerView
    private lateinit var searchAdapter: SearchAdapter
    private lateinit var editText: AppCompatEditText
    private lateinit var noSearchResultsFoundText: TextView
    private lateinit var sportsList: List<Sports>
    private lateinit var clearQueryImageView: ImageView
    private lateinit var voiceSearchImageView: ImageView

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        recyclerView = findViewById(R.id.search_list)
        noSearchResultsFoundText = findViewById(R.id.no_search_results_found_text)
        editText = findViewById(R.id.search_edit_text)
        voiceSearchImageView = findViewById(R.id.voice_search_query)
        clearQueryImageView = findViewById(R.id.clear_search_query)

        sportsList = sportsList(applicationContext)
        attachAdapter(sportsList)

        editText.doOnTextChanged { text, _, _, _ ->
            val query = text.toString().toLowerCase(Locale.getDefault())
            filterWithQuery(query)
            toggleImageView(query)
        }

        voiceSearchImageView.setOnClickListener {
            val intent = Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH).apply {
                putExtra(
                    RecognizerIntent.EXTRA_LANGUAGE_MODEL,
                    RecognizerIntent.LANGUAGE_MODEL_FREE_FORM
                )
            }
            startActivityForResult(intent, SPEECH_REQUEST_CODE)
        }

        clearQueryImageView.setOnClickListener {
            editText.setText("")
        }
    }

    private fun attachAdapter(list: List<Sports>) {
        searchAdapter = SearchAdapter(list, this)
        recyclerView.adapter = searchAdapter
    }

    private fun filterWithQuery(query: String) {
        if (query.isNotEmpty()) {
            val filteredList: List<Sports> = onFilterChanged(query)
            attachAdapter(filteredList)
            toggleRecyclerView(filteredList)
        } else if (query.isEmpty()) {
            attachAdapter(sportsList)
        }
    }

    private fun onFilterChanged(filterQuery: String): List<Sports> {
        val filteredList = ArrayList<Sports>()
        for (currentSport in sportsList) {
            if (currentSport.title.toLowerCase(Locale.getDefault()).contains(filterQuery)) {
                filteredList.add(currentSport)
            }
        }
        return filteredList
    }

    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
        if (requestCode == SPEECH_REQUEST_CODE && resultCode == Activity.RESULT_OK) {
            val spokenText: String? =
                data?.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS).let { results ->
                    results?.get(0)
                }
            // Do something with spokenText
            editText.setText(spokenText)
        }
        super.onActivityResult(requestCode, resultCode, data)
    }

    private fun toggleRecyclerView(sportsList: List<Sports>) {
        if (sportsList.isEmpty()) {
            recyclerView.visibility = View.INVISIBLE
            noSearchResultsFoundText.visibility = View.VISIBLE
        } else {
            recyclerView.visibility = View.VISIBLE
            noSearchResultsFoundText.visibility = View.INVISIBLE
        }
    }

    private fun toggleImageView(query: String) {
        if (query.isNotEmpty()) {
            clearQueryImageView.visibility = View.VISIBLE
            voiceSearchImageView.visibility = View.INVISIBLE
        } else if (query.isEmpty()) {
            clearQueryImageView.visibility = View.INVISIBLE
            voiceSearchImageView.visibility = View.VISIBLE
        }
    }

    override fun onSportSelected(sports: Sports?) {
        val intent = Intent(applicationContext, DetailActivity::class.java)
        intent.putExtra("DETAIL_SPORTS_DATA", sports)
        startActivity(intent)
    }

    companion object {
        const val SPEECH_REQUEST_CODE = 0
    }
}

请帮助我使用edittext和voice搜索在recyclerview中进行搜索。

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