Question

我有以下布局，我的问题是TextView只显示3行，甚至更长的文字也没有。

请问我的错误是什么？

<?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

尝试以下方法：

<?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：

Answer 2

尝试将maxlines Attribute设置为TextView。

像：

android:maxLines="10"

Answer 3

让TextView显示它只是将android：frameLayout的layout_width从0dp更改为wrap_content：

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

Answer 4

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">

到

<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">

如何让TextView增加其高度

4 个答案: