將SwipeToRefresh添加到RecyclerViewAndroid

有以下代碼的活動頁面：

<androidx.swiperefreshlayout.widget.SwipeRefreshLayout
        android:id="@ id/swipeRefreshLayout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#00FFFFFF"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toBottomOf="@ id/view"
        app:layout_constraintHorizontal_bias="0.0"
>

        <androidx.recyclerview.widget.RecyclerView
            android:id="@ id/mainList"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="#F0F2F5"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintTop_toBottomOf="@ id/view"
            app:layout_constraintVertical_bias="0"
            tools:layout_editor_absoluteX="0dp" />

    </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>

在我的主要 activity.kt 檔案中，我有以下代碼，但我不確定我需要在哪里放置監聽等，因為我沒有撰寫這部分代碼；

package com.example.what2do_v2

import android.content.Intent
import android.os.Bundle
import android.util.Log
import android.widget.ImageButton
import androidx.appcompat.app.AppCompatActivity
import androidx.recyclerview.widget.LinearLayoutManager
import androidx.recyclerview.widget.RecyclerView
import androidx.swiperefreshlayout.widget.SwipeRefreshLayout
import com.example.what2do_v2.Adapter.TaskAdapter
import com.example.what2do_v2.Model.TaskResponse
import com.example.what2do_v2.Service.ApiClient
import retrofit2.Call
import retrofit2.Callback
import retrofit2.Response


class MainActivity : AppCompatActivity() {
    private val apiService by lazy {
        ApiClient.create()
    }


    private var taskData : ArrayList<TaskResponse> = arrayListOf();

    override fun onCreate(savedInstanceState: Bundle?) {

        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        val searchbutton:ImageButton=findViewById(R.id.searchbutton)
        searchbutton.setOnClickListener{
            startActivity(Intent(this, ActivitySearch::class.java))
        }

        val saves:ImageButton=findViewById(R.id.saves)
        saves.setOnClickListener{
            startActivity(Intent(this, ActivitySaves::class.java))
        }

        val settings:ImageButton=findViewById(R.id.settings)
        settings.setOnClickListener{
            startActivity(Intent(this, ActivitySettings::class.java))
        }
        loadData();
    }

    private fun loadData(){
        var data = apiService.getMainData();

        data.enqueue(object : Callback<ArrayList<TaskResponse>> {

            override fun onResponse(
                call: Call<ArrayList<TaskResponse>>,
                response: Response<ArrayList<TaskResponse>>
            ) {

                if (response.code() == 200) {
                    taskData = response.body()!!;
                    displaydata();
                }

            }

            override fun onFailure(call: Call<ArrayList<TaskResponse>>, t: Throwable) {
                Log.d("-----------------", t.toString())
            }
        })
    }

    private fun displaydata(){
        var recyclerView = findViewById<RecyclerView>(R.id.mainList);
        var adapter = TaskAdapter(this, taskData);
        recyclerView.layoutManager = LinearLayoutManager(this)
        recyclerView.adapter = adapter

    }
}

我真的很難在上面添加額外的“SwipeRefreshLayout”代碼。我試圖按照 stackflow 上的每個示例進行操作，但似乎無法理解要添加的適當位置。

uj5u.com熱心網友回復：

像這樣初始化SwipeRefreshLayout& 分配一個重繪 偵聽器onCreate()：

val swipeRefreshLayout: SwipeRefreshLayout = findViewById(R.id.swipeRefreshLayout)

// load data on swipe refresh.
swipeRefreshLayout.setOnRefreshListener { loadData() }

// Disable the refreshing after data load
swipeRefreshLayout.isRefreshing = false

標籤：安卓 科特林 android-recyclerview

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