Question

我不知道为什么当我在文本视图上施加约束时，这样就无法显示我想要的确切位置了，我想这可能是将列表视图高度推到一起的问题

下面的图像是显示的问题：

这是我的适配器：

@Override
    public View getView(int position, View convertView, ViewGroup parent) {
        //Put the food_list_layout in the convertView
        if(convertView == null){
            convertView = View.inflate(context, R.layout.preorder_list_layout_orders,null);
        }

这是我的XML文件：

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.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">
    <TextView
        android:id="@+id/orderID"
        android:layout_width="319dp"
        android:layout_height="27dp"
        android:layout_marginStart="8dp"

        android:layout_marginLeft="8dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="8dp"
        android:layout_marginRight="8dp"
        android:layout_marginBottom="8dp"
        android:text="Transaction ID"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.25"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.011" />
    <ImageView
        android:id="@+id/imageView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="8dp"
        android:layout_marginRight="8dp"
        android:layout_marginBottom="8dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.066"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.074"
        app:srcCompat="@drawable/ic_launcher_background" />

    <TextView
        android:id="@+id/orderFoodName"
        android:layout_width="168dp"
        android:layout_height="29dp"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="8dp"
        android:layout_marginRight="8dp"
        android:layout_marginBottom="8dp"
        android:text="Food Name"
        android:textSize="20dp"
        android:textStyle="bold"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.607"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.091" />

    <TextView

        android:id="@+id/textView4"
        android:layout_width="59dp"
        android:layout_height="25dp"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="8dp"
        android:layout_marginRight="8dp"
        android:layout_marginBottom="8dp"
        android:text="Quantity: "
        android:textStyle="bold"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.146" />

    <TextView
        android:id="@+id/orderQuantity"
        android:layout_width="70dp"
        android:layout_height="22dp"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="8dp"
        android:layout_marginRight="8dp"
        android:layout_marginBottom="8dp"
        android:text="Quantity"
        android:textStyle="bold"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.698"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.145" />

    <TextView
        android:id="@+id/orderAN"
        android:layout_width="371dp"
        android:layout_height="28dp"
        android:layout_marginStart="8dp"

        android:layout_marginLeft="8dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="8dp"
        android:layout_marginRight="8dp"
        android:layout_marginBottom="8dp"
        android:text="addnotes"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.791"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.282" />

    <TextView
        android:id="@+id/textView6"
        android:layout_width="124dp"
        android:layout_height="29dp"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="8dp"
        android:layout_marginRight="8dp"
        android:layout_marginBottom="8dp"
        android:text="Collection Timing:"
        android:textSize="15dp"
        android:textStyle="bold"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.07"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/orderAN"
        app:layout_constraintVertical_bias="0.015" />

    <TextView
        android:id="@+id/orderCT2"
        android:layout_width="124dp"
        android:layout_height="29dp"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="8dp"
        android:layout_marginRight="8dp"
        android:layout_marginBottom="8dp"
        android:text="Collection Timing"
        android:textSize="15dp"
        android:textStyle="bold"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toEndOf="@+id/textView6"
        app:layout_constraintTop_toBottomOf="@+id/orderAN"
        app:layout_constraintVertical_bias="0.015" />

    <TextView
        android:id="@+id/textView5"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="8dp"
        android:layout_marginRight="8dp"
        android:layout_marginBottom="8dp"
        android:text="Additional Notes: "
        android:textSize="15dp"
        android:textStyle="bold"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.068"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.237" />

</android.support.constraint.ConstraintLayout>

Answer 1

您使用固定大小的视图，这使屏幕无响应。

如果要实现自适应布局，请不要使用固定大小，可以使用ConstraintLayout，但可以使用android:layout_width="0dp"，android:layout_width="wrap_content"属性和一些Guidelines。

以下是您所需布局的示例：

<?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:layoutDirection="ltr"
  android:orientation="vertical">



<TextView
    android:id="@+id/orderID"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_marginStart="8dp"

    android:layout_marginTop="8dp"
    android:layout_marginEnd="8dp"
    android:layout_marginBottom="8dp"
    android:text="Transaction ID"
    app:layout_constraintBottom_toTopOf="@+id/imageView2"
    app:layout_constraintEnd_toStartOf="@+id/guideline2"
    app:layout_constraintHorizontal_bias="0.5"
    app:layout_constraintStart_toStartOf="@+id/guideline"
    app:layout_constraintTop_toTopOf="parent"
    app:layout_constraintVertical_bias="0.011" />

<ImageView
    android:id="@+id/imageView2"
    android:layout_width="0dp"
    android:layout_height="0dp"
    android:layout_marginTop="8dp"
    android:layout_marginEnd="8dp"
    android:layout_marginBottom="8dp"
    app:layout_constraintBottom_toTopOf="@+id/textView5"
    app:layout_constraintEnd_toStartOf="@+id/guideline3"
    app:layout_constraintHorizontal_bias="0.5"
    app:layout_constraintStart_toStartOf="@+id/orderID"
    app:layout_constraintTop_toBottomOf="@+id/orderID"
    app:layout_constraintVertical_bias="1.0"
    app:srcCompat="@drawable/ic_launcher_background" />

<TextView
    android:id="@+id/orderFoodName"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_marginStart="8dp"
    android:layout_marginEnd="8dp"
    android:text="Food Name"
    android:textSize="20dp"
    android:textStyle="bold"
    app:layout_constraintEnd_toStartOf="@+id/guideline2"
    app:layout_constraintHorizontal_bias="0.607"
    app:layout_constraintStart_toEndOf="@+id/imageView2"
    app:layout_constraintTop_toTopOf="@+id/imageView2" />

<TextView

    android:id="@+id/textView4"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginTop="8dp"
    android:layout_marginBottom="8dp"
    android:text="Quantity: "
    android:textStyle="bold"
    app:layout_constraintBottom_toBottomOf="@+id/imageView2"
    app:layout_constraintStart_toStartOf="@+id/orderFoodName"
    app:layout_constraintTop_toBottomOf="@+id/orderFoodName"
    app:layout_constraintVertical_bias="0.146" />

<TextView
    android:id="@+id/orderQuantity"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginStart="8dp"
    android:layout_marginBottom="8dp"
    android:text="Quantity"
    android:textStyle="bold"
    app:layout_constraintBottom_toBottomOf="@+id/textView4"
    app:layout_constraintStart_toEndOf="@+id/textView4"
    app:layout_constraintTop_toTopOf="@+id/textView4"
    app:layout_constraintVertical_bias="0.145" />

<TextView
    android:id="@+id/orderAN"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_marginTop="8dp"
    android:layout_marginEnd="8dp"
    android:text="addnotes"
    app:layout_constraintBottom_toTopOf="@+id/textView6"
    app:layout_constraintEnd_toStartOf="@+id/guideline3"
    app:layout_constraintHorizontal_bias="0.5"
    app:layout_constraintStart_toStartOf="@+id/orderID"
    app:layout_constraintTop_toBottomOf="@+id/textView5" />

<TextView
    android:id="@+id/textView6"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginTop="8dp"
    android:text="Collection Timing:"
    android:textSize="15dp"
    android:textStyle="bold"
    app:layout_constraintBottom_toTopOf="@+id/guideline4"
    app:layout_constraintEnd_toEndOf="@+id/imageView2"
    app:layout_constraintHorizontal_bias="0.5"
    app:layout_constraintStart_toStartOf="@+id/orderID"
    app:layout_constraintTop_toBottomOf="@+id/orderAN"
    app:layout_constraintVertical_bias="0.015" />

<TextView
    android:id="@+id/orderCT2"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_marginStart="8dp"
    android:layout_marginEnd="8dp"
    android:text="Collection Timing"
    android:textSize="15dp"
    android:textStyle="bold"
    app:layout_constraintBottom_toBottomOf="@+id/textView6"
    app:layout_constraintEnd_toStartOf="@+id/guideline2"
    app:layout_constraintStart_toEndOf="@+id/textView6"
    app:layout_constraintTop_toTopOf="@+id/textView6"
    app:layout_constraintVertical_bias="0.015" />


<TextView
    android:id="@+id/textView5"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_marginEnd="8dp"
    android:text="Additional Notes: "
    android:textSize="15dp"
    android:textStyle="bold"
    app:layout_constraintBottom_toTopOf="@+id/orderAN"
    app:layout_constraintEnd_toStartOf="@+id/guideline3"
    app:layout_constraintStart_toStartOf="@+id/orderID"
    app:layout_constraintTop_toBottomOf="@+id/imageView2" />

<androidx.constraintlayout.widget.Guideline
    android:id="@+id/guideline"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    app:layout_constraintGuide_begin="20dp"
    app:layout_constraintGuide_percent="0.05" />

<androidx.constraintlayout.widget.Guideline
    android:id="@+id/guideline2"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    app:layout_constraintGuide_begin="385dp"
    app:layout_constraintGuide_percent="0.95" />

<androidx.constraintlayout.widget.Guideline
    android:id="@+id/guideline3"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    app:layout_constraintGuide_begin="144dp" />

<androidx.constraintlayout.widget.Guideline
    android:id="@+id/guideline4"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="horizontal"
    app:layout_constraintGuide_begin="392dp"
    app:layout_constraintGuide_percent="0.4" />

</androidx.constraintlayout.widget.ConstraintLayout>

它看起来像这样：

Answer 2

尝试一下

s3

ListView，有没有办法增加高度？

2 个答案: