回收站视图未显示我从 api 获取的所有内容

Question

以下是我的活动布局文件

    <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">
    <androidx.appcompat.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:minHeight="?attr/actionBarSize"
        app:layout_constraintTop_toTopOf="parent"
        android:theme="@style/ThemeOverlay.AppCompat.Dark"
        android:background="#B71C1C"/>
    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/recyclerView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="10dp"

        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"/>
    <RelativeLayout
        android:id="@+id/progresslayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="#fff">
        <ProgressBar
            android:id="@+id/progressbar"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintBottom_toBottomOf="parent"
            android:indeterminateTint="@color/colorPrimaryDark"
            tools:targetApi="lollipop" />
    </RelativeLayout>
</androidx.constraintlayout.widget.ConstraintLayout>

以下是我的回收站代码

 <androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="350dp"
    android:layout_height="wrap_content"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_margin="20dp"
    app:cardCornerRadius="8dp"

    app:cardElevation="6dp">

<LinearLayout
    android:id="@+id/llcontent"
    android:layout_width="match_parent"
    android:background="#E91E63"
    android:weightSum="6"
    android:layout_height="wrap_content">


    <RelativeLayout
        android:layout_weight="3.3"
        android:layout_width="290dp"
        android:layout_height="wrap_content">

        <TextView
            android:id="@+id/txtTitle"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Name of the file"
            android:padding="8dp"
            android:textSize="18sp"
            android:textStyle="bold"
            android:layout_marginLeft="80dp"

            android:textColor="#ffffff"/>
        <TextView
            android:id="@+id/txtQuote"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_below="@id/txtTitle"
            android:text="name_of_the_author"

            android:padding="8dp"

            android:textColor="#ffffff"
            android:textSize="19sp"/>
        <TextView
            android:id="@+id/txtQuoteid"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="rs_299"
            android:padding="8dp"


            android:layout_toRightOf="@id/txtTitle"
            android:textSize="15sp"
            android:textStyle="bold"

            android:textColor="#ffffff"/>

    </RelativeLayout>




</LinearLayout>
    </androidx.cardview.widget.CardView>

问题是因为对于 textquote 文本视图，我正在获取并尝试显示大文本内容，某些内容未显示。如何解决此问题？。回收器的大小根据第一个内容自动修复的第一个回收站视图请帮助我

descactivitycode

class descactivity : AppCompatActivity() {
lateinit var recyclerview: RecyclerView
lateinit var adapter: Horizontal_RecyclerView
lateinit var layoutmanager: RecyclerView.LayoutManager
lateinit var progressBar: ProgressBar
lateinit var progressLayout: RelativeLayout
lateinit var button: Button
lateinit var toolbar: Toolbar
val bookInfoList = arrayListOf<Book>()
val ratingComparator = Comparator<Book> { book1, book2 ->
    book1.title.compareTo(book2.title, true)
}

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


    recyclerview = findViewById(R.id.recyclerView)

    progressBar = findViewById(R.id.progressbar)
    layoutmanager = LinearLayoutManager(this,LinearLayoutManager.HORIZONTAL,false)


    progressLayout = findViewById(R.id.progresslayout)
    progressLayout.visibility = View.VISIBLE
    toolbar = findViewById(R.id.toolbar)

    setSupportActionBar(toolbar)
    val intent = intent
    val selectionOption = intent.getStringExtra("option")
    val selection = intent.getStringExtra("option1")
    if (selectionOption != null) {
        val queue = Volley.newRequestQueue(this)
        val url = "https://quotesapp-api.herokuapp.com/getquotes"
        if (ConnectionManager().checkConnectivity(this as Context)) {
            val JSONObjectRequest =
                object : JsonObjectRequest(Request.Method.GET, url, null, Response.Listener {
                    println("response is $it")

                    val success = it.getBoolean("success")
                    try {
                        if (success) {
                            progressLayout.visibility = View.GONE
                            val data = it.getJSONArray("data")
                            for (i in 0 until data.length()) {
                                val bookJsonObject = data.getJSONObject(i)
                                val BookObject = Book(
                                    bookJsonObject.getString("_id"),
                                    bookJsonObject.getString("title"),
                                    bookJsonObject.getString("quoteid"),
                                    bookJsonObject.getString("quote")
                                    //bookJsonObject.getInt("__v")


                                )
                                bookInfoList.add(BookObject)
                                adapter =
                                    Horizontal_RecyclerView(this as Context, bookInfoList)
                                recyclerview.adapter = adapter
                                recyclerview.layoutManager = layoutmanager
                            }
                        }
                    } catch (e: JSONException) {
                        Toast.makeText(this, "some unknown error occurred", Toast.LENGTH_SHORT)
                            .show()
                    }


                }, Response.ErrorListener {
                    Toast.makeText(this, "volley error occured", Toast.LENGTH_SHORT).show()
                    println("error is $it")


                }) {

                    override fun getHeaders(): MutableMap<String, String> {
                        val headers = HashMap<String, String>()

                        return headers
                    }

                }
            queue.add(JSONObjectRequest)

        }
    }

适配器

class Horizontal_RecyclerView(val context: Context, val itemList:ArrayList<Book>):RecyclerView.Adapter<Horizontal_RecyclerView.MyViewHolder>() {


override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MyViewHolder {
    val view=LayoutInflater.from(parent.context).inflate(R.layout.row,parent,false)
    return MyViewHolder(view)
}

override fun onBindViewHolder(holder: MyViewHolder, position: Int) {
    val book=itemList[position]
    holder.txtTitle.text=book.title
    holder.txtQuote.text=book.quote
    holder.txtQuoteid.text=book.quoteid



}

override fun getItemCount(): Int {
    return itemList.size
}
class MyViewHolder(itemView:View):RecyclerView.ViewHolder(itemView) {
    val txtTitle: TextView =itemView.findViewById(R.id.txtTitle)
    val txtQuote: TextView =itemView.findViewById(R.id.txtQuote)

    val txtQuoteid: TextView =itemView.findViewById(R.id.txtQuoteid)

   // val llcontent: LinearLayout =itemView.findViewById(R.id.llcontent )
}

}

Answer 1

您好，关于回收站行 XML 文件，

<RelativeLayout
    android:layout_weight="3.3"
    android:layout_width="290dp"
    android:layout_height="wrap_content"

尝试将 layout_width 从 290dp 更改为 wrap_content/ match_parent，然后将宽度限制放在主 xml 文件上。 在 txtQuote TextView 标记 上的 加号 代替 padding 切换到边距。

如果失败请联系

Answer 2

Recyclerview 似乎不太清楚它的父级宽度和高度。当我使用“match_parent”和“wrap_content”时，我有一个错误加载的活动/片段。

我最终做的不是最聪明的解决方案，但对我有用。我正在计算每个屏幕的倾角，然后动态计算屏幕宽度，然后将我的回收站视图设置为刚刚为我工作的数量(width - 45*(scale))。 45 是我在不同设备上测试过的一个数字，并认为足够好。再一次，这不是最明智的，它是唯一对我有用的东西。

int pixel = 120;
final float scale = getResources().getDisplayMetrics().density;
int dip = (int) (pixel * scale + 0.5f);

WindowManager windowManager = (WindowManager)context.getSystemService(Context.WINDOW_SERVICE);
int width = (windowManager.getDefaultDisplay().getWidth());
int width2 = (width - 45*(Math.round(scale)));
view.setLayoutParams(new RecyclerView.LayoutParams(width2, RecyclerView.LayoutParams.WRAP_CONTENT));