如何在android xml中制作这种布局

Question

I have problem in placing image view at middle of two different Layout. please help

Answer 1

Try using constraint layout and fix the Image view to centre of the screen and then by using vertical bias adjust the image view to the centre of top view.

Take this example:

  <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <LinearLayout
            android:id="@+id/footerAd"
            android:layout_width="match_parent"
            android:layout_height="200dp"
            android:background="@color/black"
            android:orientation="vertical"
            android:visibility="visible"
            tools:layout_editor_absoluteX="0dp"
            tools:layout_editor_absoluteY="-30dp"
            tools:visibility="visible" />

        <ImageView
            android:layout_width="100dp"
            android:layout_height="100dp"
            android:background="@color/colorPrimary"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintHorizontal_bias="0.498"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintVertical_bias="0.198" />


    </androidx.constraintlayout.widget.ConstraintLayout>

Answer 2

This is achievable using ConstraintLayout: Please note the constraints of the ImageView.

  <androidx.constraintlayout.widget.ConstraintLayout
    android:id="@+id/container_top"
    android:layout_width="match_parent"
    android:layout_height="200dp"
    android:background="@android:color/holo_red_light"
    app:layout_constraintTop_toTopOf="parent" />

<androidx.constraintlayout.widget.ConstraintLayout
    android:id="@+id/container_bottom"
    android:layout_width="match_parent"
    android:layout_height="400dp"
    app:layout_constraintTop_toBottomOf="@id/container_top" />

<ImageView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:src="@mipmap/ic_launcher"
    app:layout_constraintBottom_toTopOf="@id/container_bottom"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toBottomOf="@id/container_top" />