如何让 TextView 增加高度

Question

我有以下布局，我的问题是TextView只显示 3 行，即使是更长的文本也不会显示更多。

请问我这里有什么错误？

<?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="wrap_content">

    <FrameLayout
        android:id="@+id/frameLayout"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toStartOf="@+id/btStartItem"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <ProgressBar
            android:id="@+id/pbTestItem"
            style="?android:attr/progressBarStyleHorizontal"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_margin="0dp"
            android:paddingStart="?android:attr/expandableListPreferredItemPaddingLeft"
            android:progressBackgroundTint="@android:color/transparent"
            android:progressTint="@android:color/holo_orange_light"
            android:scaleY="5"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            tools:visibility="visible" />

        <TextView
            android:id="@+id/lblListItem"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="fill"
            android:clickable="true"
            android:gravity="left"
            android:paddingStart="?android:attr/expandableListPreferredItemPaddingLeft"
            android:text="Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat."
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />

    </FrameLayout>

    <Button
        android:id="@+id/btStartItem"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:text="@string/action_start"
        android:visibility="visible"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toStartOf="@+id/ivStatusItem"
        app:layout_constraintStart_toEndOf="@+id/frameLayout"
        app:layout_constraintTop_toTopOf="parent" />

    <ImageView
        android:id="@+id/ivStatusItem"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginEnd="8dp"
        android:layout_marginStart="8dp"
        android:adjustViewBounds="true"
        android:contentDescription="@string/status_test"
        android:cropToPadding="false"
        android:maxHeight="40dp"
        android:maxWidth="40dp"
        android:src="@drawable/question"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@+id/btStartItem"
        app:layout_constraintTop_toTopOf="parent" />

</android.support.constraint.ConstraintLayout>

Answer 1

尝试将 maxlines Attribute 设置为 TextView。

喜欢：

android:maxLines="10"

Answer 2

为了让 TextView 显示所有内容，只需将 FrameLayout 的 android:layout_width 从 0dp 更改为 wrap_content:

(...)
    <FrameLayout
    android:id="@+id/frameLayout"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
(...)

Answer 3

将 FrameLayout 高度从 0dp 更改为 wrap_content

<FrameLayout
        android:id="@+id/frameLayout"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toStartOf="@+id/btStartItem"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">

至

<FrameLayout
        android:id="@+id/frameLayout"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toStartOf="@+id/btStartItem"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">

Answer 4

尝试以下操作：

<?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="wrap_content">

<FrameLayout
    android:id="@+id/frameLayout"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintEnd_toStartOf="@+id/btStartItem"
    android:adjustViewBounds="true"
    app:layout_constraintHorizontal_weight="40"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent">

    <ProgressBar
        android:id="@+id/pbTestItem"
        style="?android:attr/progressBarStyleHorizontal"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="0dp"
        android:paddingStart="?android:attr/expandableListPreferredItemPaddingLeft"
        android:progressBackgroundTint="@android:color/transparent"
        android:progressTint="@android:color/holo_orange_light"
        android:scaleY="5"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        tools:visibility="visible" />

    <TextView
        android:id="@+id/lblListItem"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="fill"
        android:clickable="true"
        android:gravity="left"
        android:paddingStart="?android:attr/expandableListPreferredItemPaddingLeft"
        android:text="Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat."
        app:layout_constraintBottom_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</FrameLayout>

<Button
    android:id="@+id/btStartItem"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_marginStart="8dp"
    android:text="@string/action_start"
    android:visibility="visible"
    android:adjustViewBounds="true"
    app:layout_constraintHorizontal_weight="30"
    app:layout_constraintEnd_toStartOf="@+id/ivStatusItem"
    app:layout_constraintStart_toEndOf="@+id/frameLayout"
    app:layout_constraintTop_toTopOf="parent" />

<ImageView
    android:id="@+id/ivStatusItem"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_marginEnd="8dp"
    android:layout_marginStart="8dp"
    android:adjustViewBounds="true"
    app:layout_constraintHorizontal_weight="30"
    android:cropToPadding="false"
    android:maxHeight="40dp"
    android:maxWidth="40dp"
    android:src="@drawable/question"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toEndOf="@+id/btStartItem"
    app:layout_constraintTop_toTopOf="parent" />

</android.support.constraint.ConstraintLayout>

输出：

如何让 TextView 增加高度

What to do to let TextView increase its height

android

textview

android-layout

android-constraintlayout