Question

TextView未显示最后一行半的文字。我正在使用ConstraintLayout。在LinearLayout它正在按预期工作。试过不同的方式，但它仍然认为它不会起作用。这是整个代码。

<?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"
    android:background="#fff"
    tools:context="com.welcomeshah.dictionary.MainActivity">

    <LinearLayout
        android:id="@+id/searchbarlayout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#ffffff"
        android:gravity="center_vertical"
        android:orientation="horizontal"
        android:padding="5dp"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <LinearLayout
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginLeft="5dp"
            android:layout_marginRight="5dp"
            android:layout_weight="1"
            android:background="@drawable/search_background"
            android:gravity="center_vertical"
            android:orientation="horizontal"
            android:padding="5dp">

            <ImageView
                android:layout_width="20dp"
                android:layout_height="20dp"
                android:layout_marginRight="5dp"
                android:src="@drawable/searchline" />

            <EditText
                android:id="@+id/searchET"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:background="@null"
                android:hint="Type to search"
                android:inputType="textPersonName"
                android:textColor="#222" />

            <ImageView
                android:id="@+id/edit"
                android:layout_width="30dp"
                android:layout_height="30dp"
                android:layout_marginLeft="5dp"
                android:src="@drawable/backspace" />
        </LinearLayout>

        <ImageView
            android:id="@+id/settings"
            android:layout_width="30dp"
            android:layout_height="30dp"
            android:src="@drawable/settings" />

    </LinearLayout>

    <View
        android:id="@+id/shadow"
        android:layout_width="match_parent"
        android:layout_height="5dp"
        android:background="@drawable/shadow_view"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toBottomOf="@id/searchbarlayout" />

    <TextView
        android:id="@+id/data"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="fill"
        android:background="#fff"
        android:padding="5dp"
        android:textSize="18sp"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toBottomOf="@id/shadow" />

    <ListView
        android:id="@+id/wordsList"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#ffde00"
        android:visibility="gone"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toBottomOf="@id/shadow">

    </ListView>

    <LinearLayout
        android:id="@+id/wait"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="#ffde00"
        android:gravity="center"
        android:orientation="vertical"
        android:visibility="gone"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <ProgressBar
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Working on Databases"
            android:textAlignment="center"
            android:textSize="20sp" />

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Please wait for a few moments only for the first time."
            android:textAlignment="center" />

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Thanks for you patience."
            android:textAlignment="center" />
    </LinearLayout>
</android.support.constraint.ConstraintLayout>

这是布局的图像。 {{3}}

还尝试添加android:includeFontPadding="false"，但一切都是一样的。感谢你的努力。

Answer 1

不建议对ConstraintLayout中包含的小部件使用MATCH_PARENT。可以通过使用MATCH_CONSTRAINT来定义类似的行为，其中相应的左/右或上/下约束被设置为“父”。

所以添加宽度为0dp 。请尝试下面的代码行。

<TextView
    android:id="@+id/data"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:background="#fff"
    android:padding="5dp"
    android:textSize="18sp"
    android:layout_gravity="fill"
    app:layout_constraintVertical_bias="0"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintTop_toBottomOf="@id/shadow"
    app:layout_constraintLeft_toLeftOf="parent"
    app:layout_constraintRight_toRightOf="parent" />

Answer 2

我在布局中显示了单个textview。

<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:id="@+id/activity_constraintset_example"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <TextView
        android:id="@+id/textView11"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:text="@string/lake_discription"
        app:layout_constraintLeft_toLeftOf="parent"
        android:layout_marginTop="8dp"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"
        android:layout_marginBottom="16dp"
        tools:layout_constraintTop_creator="1"
        tools:layout_constraintBottom_creator="1"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintVertical_bias="0.0" />

</android.support.constraint.ConstraintLayout>

TextView最后一行半行被切断

2 个答案: