Question

嘿，有人可以粘贴此代码并告诉我为什么我无法拉伸粉红色文本视图来填充空白屏幕的其余部分。这是我的代码主要使用constraintLayout：

<?xml version="1.0" encoding="utf-8"?>

<android.support.design.widget.AppBarLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <android.support.v7.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        android:background="@android:color/white"
        android:elevation="4dp">

        <TextView
            android:id="@+id/toolbar_title"
            fontPath="fonts/Medium-Extd.otf"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/check_out"
            android:textAllCaps="true"
            android:textColor="#000000"
            android:textSize="14sp"/>

    </android.support.v7.widget.Toolbar>
</android.support.design.widget.AppBarLayout>


<android.support.v4.widget.NestedScrollView
    android:id="@+id/nsv_checkout_container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_above="@+id/footer"
    android:background="#dadbdd"
    android:fillViewport="true"
    app:layout_behavior="@string/appbar_scrolling_view_behavior">

    <android.support.constraint.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginTop="10dp">


        <android.support.v7.widget.CardView
            android:id="@+id/cvOne"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginLeft="6dp"
            android:layout_marginRight="6dp"
            android:elevation="4dp">


            <ViewFlipper
                android:id="@+id/switcher"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:background="@color/white"
                android:measureAllChildren="false">


                <android.support.constraint.ConstraintLayout
                    android:id="@+id/clPaymentSuccessful"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:layout_marginBottom="25dp"
                    android:layout_marginTop="30dp"
                    >

                    <ImageView
                        android:id="@+id/iv"
                        android:layout_width="20dp"
                        android:layout_height="26dp"
                        android:src="@drawable/bag_icon_heart"
                        app:layout_constraintBottom_toTopOf="tvStatus"
                        app:layout_constraintEnd_toEndOf="parent"
                        app:layout_constraintHorizontal_bias="0.5"
                        app:layout_constraintStart_toStartOf="parent"
                        app:layout_constraintTop_toTopOf="parent"
                        />

                    <TextView
                        android:id="@+id/tvStatus"
                        fontPath="fonts/Medium-Extd.otf"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:layout_marginTop="20dp"
                        android:textAlignment="center"
                        android:textSize="18sp"
                        app:layout_constraintHorizontal_bias="0.5"
                        app:layout_constraintTop_toBottomOf="@id/iv"
                        tools:text="Payment Successful"/>

                    <TextView
                        android:id="@+id/tvAmount"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:layout_marginTop="4dp"
                        android:textAlignment="center"
                        android:textSize="18sp"
                        app:layout_constraintHorizontal_bias="0.5"
                        app:layout_constraintTop_toBottomOf="@id/tvStatus"
                        tools:text="$3,800 USD"/>

                    <TextView
                        android:id="@+id/tvOrderNum"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:layout_marginTop="4dp"
                        android:textAlignment="center"

                        android:textSize="18sp"
                        app:layout_constraintHorizontal_bias="0.5"
                        app:layout_constraintTop_toBottomOf="@id/tvAmount"
                        tools:text="your order is 7900434343"/>

                </android.support.constraint.ConstraintLayout>

            </ViewFlipper>

        </android.support.v7.widget.CardView>


        <ViewFlipper
            android:id="@+id/switcher_cta"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="10dp"
            android:background="@color/watermelon"
            android:measureAllChildren="false"
            app:layout_constraintBottom_toTopOf="@+id/btn_close_cta"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintLeft_toLeftOf="parent"
            app:layout_constraintRight_toRightOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/cvOne">

            <android.support.constraint.ConstraintLayout
                android:id="@+id/clcta"
                android:layout_width="match_parent"
                android:layout_height="wrap_content">

                <TextView
                    android:id="@+id/tvShowStaffCta"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_marginTop="4dp"
                    android:textAlignment="center"
                    android:textSize="18sp"
                    app:layout_constraintHorizontal_bias="0.5"
                    app:layout_constraintTop_toTopOf="parent"
                    tools:text="Show this screen to Store Staff to complete your purchase"/>

            </android.support.constraint.ConstraintLayout>
        </ViewFlipper>


        <android.support.v7.widget.AppCompatButton
            android:id="@+id/btn_close_cta"
            fontPath="fonts/Medium-Extd.otf"
            android:layout_width="match_parent"
            android:layout_height="41dp"
            android:background="@color/action_blue"
            android:clickable="true"
            android:elevation="4dp"
            android:gravity="center"
            android:text="@string/close"
            android:textAlignment="center"
            android:textColor="#ffffff"
            android:textSize="14sp"
            app:layout_constraintBottom_toBottomOf="parent"/>


    </android.support.constraint.ConstraintLayout>

</android.support.v4.widget.NestedScrollView>

有一个名为switcher_cta的viewflipper我只想要占用屏幕的剩余灰色区域。我该怎么做？

Answer 1

您已将约束正确设置为顶部和底部，但为了使它们起作用，View的高度必须设置为0dp。

同时避免在ConstraintLayout中设置匹配父级，因为您的视图左右对齐父级，将宽度设置为0dp将填满空格。

<ViewFlipper
            android:id="@+id/switcher_cta"
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:layout_marginTop="10dp"
            android:background="@color/watermelon"
            android:measureAllChildren="false"
            app:layout_constraintBottom_toTopOf="@+id/btn_close_cta"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintLeft_toLeftOf="parent"
            app:layout_constraintRight_toRightOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/cvOne">

ANDROID ConstraintLayout - 如何使视图支持屏幕剩余部分的整个宽度和高度？

1 个答案: