简单实现Android端搜索框示例详解

allprojects {
    repositories {
        maven { url "https://gitee.com/AbnerAndroid/almighty/raw/master" }
    }
}

dependencies {
    implementation 'com.vip:search:1.0.0'
}

<?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:paddingLeft="10dp"
  android:paddingRight="10dp"
  tools:context=".MainActivity">
  <com.vip.search.SearchLayout
    android:id="@+id/search_layout"
    android:layout_width="match_parent"
    android:layout_height="40dp"
    android:layout_marginTop="10dp"
    app:layout_constraintLeft_toLeftOf="parent"
    app:layout_constraintTop_toTopOf="parent"
    app:search_bg="@drawable/shape_stroke_10" />
  <com.vip.search.SearchList
    android:id="@+id/search_list"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginTop="10dp"
    app:is_hot_flex_box_or_grid="true"
    app:is_visibility_history_clear="true"
    app:layout_constraintTop_toBottomOf="@id/search_layout" />
</androidx.constraintlayout.widget.ConstraintLayout>

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        val searchLayout = findViewById<SearchLayout>(R.id.search_layout)
        val searchList = findViewById<SearchList>(R.id.search_list)
        searchLayout.setOnTextSearchListener({
            //搜索内容改变
        }, {
            //软键盘点击了搜索
            searchList.doSearchContent(it)
        })
        //设置用于测试的热门搜索列表
        searchList.setHotList(getHotList())
        //热门搜索条目点击事件
        searchList.setOnHotItemClickListener { s, i ->
            Toast.makeText(this, s, Toast.LENGTH_SHORT).show()
        }
        //历史搜索条目点击事件
        searchList.setOnHistoryItemClickListener { s, i ->
            Toast.makeText(this, s, Toast.LENGTH_SHORT).show()
        }
    }
    /**
* AUTHOR:AbnerMing
* INTRODUCE:模拟热门搜索列表
*/
    private val mTestHotList = arrayListOf(
        "二流小码农", "三流小可爱", "Android",
        "Kotlin", "iOS", "Java", "Python", "Php是世界上最好的语言"
    )
    private fun getHotList(): ArrayList<SearchBean> {
        return ArrayList<SearchBean>().apply {
            mTestHotList.forEachIndexed { index, s ->
                val bean = SearchBean()
                bean.content = s
                bean.isShowLeftIcon = true
                val drawable: Drawable? = if (index < 2) {
                    ContextCompat.getDrawable(this@MainActivity, R.drawable.shape_circle_select)
                } else if (index == 2) {
                    ContextCompat.getDrawable(this@MainActivity, R.drawable.shape_circle_ordinary)
                } else {
                    ContextCompat.getDrawable(this@MainActivity, R.drawable.shape_circle_normal)
                }
                drawable?.setBounds(0, 0, drawable.minimumWidth, drawable.minimumHeight)
                bean.leftIcon = drawable
                add(bean)
            }
        }
    }
}

 searchLayout.setOnTextSearchListener({
            //搜索内容改变
        }, {
            //软键盘点击了搜索
            searchList.doSearchContent(it)
})

    	//热门搜索条目点击事件
        searchList.setOnHotItemClickListener { s, i ->
            Toast.makeText(this, s, Toast.LENGTH_SHORT).show()
        }
        //历史搜索条目点击事件
        searchList.setOnHistoryItemClickListener { s, i ->
            Toast.makeText(this, s, Toast.LENGTH_SHORT).show()
        }

 searchList.setHistoryItemBg(R.drawable.shape_solid_d43c3c_10)

private fun getHotList(): ArrayList<SearchBean> {
        return ArrayList<SearchBean>().apply {
            mTestHotList.forEachIndexed { index, s ->
                val bean = SearchBean()
                bean.content = s
                bean.isShowLeftIcon = true
                val drawable: Drawable? = if (index < 2) {
                    ContextCompat.getDrawable(this@MainActivity, R.drawable.shape_circle_select)
                } else if (index == 2) {
                    ContextCompat.getDrawable(this@MainActivity, R.drawable.shape_circle_ordinary)
                } else {
                    ContextCompat.getDrawable(this@MainActivity, R.drawable.shape_circle_normal)
                }
                drawable?.setBounds(0, 0, drawable.minimumWidth, drawable.minimumHeight)
                bean.leftIcon = drawable
                add(bean)
            }
        }
    }

recyclerView.layoutManager = FlexboxLayoutManager(mContext)

    	val searchHistory = getSearchHistory()
        if (!TextUtils.isEmpty(it)) {
            val jsonArray: JSONArray = if (TextUtils.isEmpty(searchHistory)) {
                JSONArray()
            } else {
                JSONArray(searchHistory)
            }
            val json = JSONObject()
            json.put("content", it)
            //如果出现了一样的，删除后，加到第一个
            var isEqual = false
            var equalPosition = 0
            for (i in 0 until jsonArray.length()) {
                val item = jsonArray.getJSONObject(i)
                val content = item.getString("content")
                if (it == content) {
                    isEqual = true
                    equalPosition = i
                    break
                }
            }
            //有一样的
            if (isEqual) {
                jsonArray.remove(equalPosition)
            } else {
                //超过了指定的阀门之后，就不在扩充
                if (jsonArray.length() >= mHistoryListSize) {
                    jsonArray.remove(0)
                }
            }
            jsonArray.put(json)
            SearchSharedPreUtils.put(mContext!!, "search_history", jsonArray.toString())
        }
        getSearchHistory()?.let {
            eachSearchHistory(it)
        }
        //两个有一个不为空，展示
        if (!TextUtils.isEmpty(it) || !TextUtils.isEmpty(searchHistory)) {
            showOrHideHistoryLayout(View.VISIBLE)
        }