Question

我有一个水平滚动视图，里面有一个相对布局，有3个ImageView。每个图像视图都显示某个国家/地区的图像。我的目标是在每个显示国家/地区名称的ImageView前面放置一个TextView。问题是，每当我尝试将TextView放在ImageView前面时，它就会消失......你们有什么想法吗？ Relative Layout是处理此问题的最佳方法吗？

这可以帮助你们更好地理解它：

我已经尝试了相对布局，约束布局，线性布局和框架布局。我在StackOverflow上看到了之前提到的所有问题，但没有一个能解决我的问题。提前谢谢！

编辑：

<?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="@color/colorWhite"

>

<TextView
    android:id="@+id/txtDescHome3"
    android:layout_width="278dp"
    android:layout_height="26dp"
    android:layout_alignParentStart="true"
    android:layout_alignParentTop="true"
    android:layout_marginStart="32dp"
    android:layout_marginTop="59dp"
    android:text="@string/sloganHome"
    android:textColor="#323B45"
    android:textSize="20sp"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintHorizontal_bias="0.0"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent"
    app:layout_constraintVertical_bias="0.0" />

<TextView
    android:id="@+id/txtTitleHome3"
    android:layout_width="wrap_content"
    android:layout_height="31dp"
    android:layout_above="@+id/txtDescHome3"
    android:layout_alignStart="@+id/txtDescHome3"
    android:layout_marginBottom="-59dp"
    android:text="@string/ExploreTitulo"
    android:textColor="#323B45"
    android:textSize="24sp"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintHorizontal_bias="0.108"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent"
    app:layout_constraintVertical_bias="0.025" />

<HorizontalScrollView
    android:id="@+id/scrlVPrincipal2"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:layout_alignParentStart="true"
    android:layout_marginTop="32dp"
    android:scrollbars="none"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintTop_toBottomOf="@+id/txtDescHome3"
    app:layout_constraintVertical_bias="1.0"
    tools:ignore="MissingConstraints"
    tools:layout_editor_absoluteX="0dp">

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <ImageView
            android:id="@+id/imgCard1"
            android:layout_width="259dp"
            android:layout_height="390dp"
            android:layout_alignParentStart="true"
            android:layout_alignParentTop="true"
            android:layout_weight="2"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintHorizontal_bias="0.504"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintVertical_bias="0.801" />

        <TextView
            android:id="@+id/txtNomePais"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentStart="true"
            android:layout_centerVertical="true"
            android:layout_marginStart="53dp"
            android:layout_weight="1"
            android:text="TextView"
            android:textSize="24sp"
            app:layout_constraintBottom_toTopOf="@+id/scrlVPrincipal2"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintHorizontal_bias="0.064"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintVertical_bias="1.0" />

        <ImageView
            android:id="@+id/imgCard3"
            android:layout_width="259dp"
            android:layout_height="390dp"
            android:layout_alignParentStart="true"
            android:layout_alignTop="@+id/imgCard1"
            android:layout_marginStart="289dp"
            android:layout_weight="1"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintHorizontal_bias="0.0"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintVertical_bias="0.8" />

        <ImageView
            android:id="@+id/imgCard2"
            android:layout_width="259dp"
            android:layout_height="390dp"
            android:layout_alignParentTop="true"
            android:layout_alignStart="@+id/imgCard1"
            android:layout_weight="1"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintHorizontal_bias="0.006"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintVertical_bias="0.0" />

    </RelativeLayout>

 </HorizontalScrollView>

</android.support.constraint.ConstraintLayout>

Answer 1

使用framelayout如下：

  <FrameLayout android:layout_height="200dp"
    android:layout_width="200dp">

    <ImageView android:layout_height="match_parent"
        android:layout_width="match_parent"
        android:src="@color/Black"/>
    <TextView android:layout_height="wrap_content"
        android:layout_width="match_parent"
        android:text="asdf"
        android:textColor="#fff"
        android:textAlignment="center"
        android:layout_gravity="bottom"/>
</FrameLayout>

Answer 2

尝试将textview后面的textview放在layout xml中，例如：

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">


<ImageView
    android:id="@+id/image_splash_screen"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_gravity="center
    android:background="@drawable/splash_bg" />

<TextView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:textColor="@color/white"
    android:textSize="55dp"
    android:text="sample"/>


</FrameLayout>

Answer 3

进行框架布局。在该框架布局中，您放置了一个imageView和一个relativelayout。图像进入imageView，其他一切都在RelativeLayout中。 RelativeLayout将位于您的图像之上。

示例（不基于您的示例 - 只是来自我的某个项目的内容）：

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"

xmlns:ads="http://schemas.android.com/apk/res-auto"

android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.x.x">

<ImageView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/imageView"
    android:src="@drawable/img"
    android:scaleType = "centerCrop"
    />


<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.x.y">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textAppearance="?android:attr/textAppearanceLarge"

        android:text="YOUR TEXT"

        android:textColor="#f3ffe3"
        android:textSize="50dp"
        android:id="@+id/textView2"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="95dp" />


</RelativeLayout>
</FrameLayout>

Answer 4

我按照我的理解尝试了，并且我还附上了截图，请使用以下代码

<?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="@android:color/white"

    >

    <TextView
        android:id="@+id/txtDescHome3"
        android:layout_width="0dp"
        android:layout_height="26dp"
        android:layout_alignParentStart="true"
        android:layout_alignParentTop="true"
        android:layout_marginBottom="412dp"
        android:layout_marginEnd="16dp"
        android:layout_marginStart="16dp"
        android:layout_marginTop="16dp"
        android:text="@string/sloganHome"
        android:textColor="#323B45"
        android:textSize="20sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/txtTitleHome3" />

    <TextView
        android:id="@+id/txtTitleHome3"
        android:layout_width="0dp"
        android:layout_height="31dp"
        android:layout_above="@+id/txtDescHome3"
        android:layout_alignStart="@+id/txtDescHome3"
        android:layout_marginEnd="16dp"
        android:layout_marginStart="16dp"
        android:layout_marginTop="16dp"
        android:text="@string/ExploreTitulo"
        android:textColor="#323B45"
        android:textSize="24sp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <HorizontalScrollView
        android:id="@+id/horizontalScrollView"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_marginBottom="16dp"
        android:layout_marginEnd="16dp"
        android:layout_marginStart="16dp"
        android:layout_marginTop="16dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/txtDescHome3"
        app:layout_constraintVertical_bias="0.851">

        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <RelativeLayout
                android:layout_width="wrap_content"
                android:layout_height="wrap_content">


                <ImageView
                    android:id="@+id/imageView"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_alignParentStart="true"
                    android:layout_alignParentTop="true"
                    android:scaleType="fitXY"
                    android:src="@drawable/bg"
                    android:visibility="visible" />


                <TextView
                    android:id="@+id/textView18"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_centerInParent="true"
                    android:text="jbdfjbvjcbvdkjbvdkjb"
                    android:textAppearance="@style/TextAppearance.AppCompat.Title"
                    android:textColor="@android:color/holo_blue_bright"
                    android:textSize="14sp"
                    android:textStyle="bold"
                    android:visibility="visible" />

            </RelativeLayout>

        </LinearLayout>
    </HorizontalScrollView>
</android.support.constraint.ConstraintLayout>

Answer 5

<?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">
    <ImageView
        android:id="@+id/image_view"
        android:layout_width="200dp"
        android:layout_height="300dp"
        android:src="#852"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        />


        <TextView
            android:id="@+id/tv"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginBottom="20dp"
            android:layout_marginRight="6dp"
            android:background="#000"
            android:text="Text......"
            android:paddingTop="5dp"
            android:gravity="center_vertical"
            android:textColor="#fff"
            app:layout_constraintBottom_toBottomOf="@+id/image_view"
            app:layout_constraintEnd_toEndOf="@+id/image_view"
            app:layout_constraintStart_toStartOf="@+id/image_view"
            />

</android.support.constraint.ConstraintLayout>

当我尝试将它放在ImageView前面时，TextView消失了

5 个答案: