Java 材料设计布局问题

我在材料设计和布局方面有问题

以下是我所拥有的：

以及表示这一点的代码

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:background="@color/backgroundColor"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    tools:showIn="@layout/activity_main"
    tools:context="com.mycompany.inventory.MainActivity">

    <ImageView
        android:id="@+id/logoView"
        android:layout_width="225dp"
        android:layout_height="90dp"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:src="@drawable/mycompanylogo"
        android:layout_marginBottom="20dp"
        />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textAppearance="?android:attr/textAppearanceMedium"
        android:text="USERNAME"
        android:id="@+id/txtUsername"
        android:layout_below="@+id/logoView"

        android:layout_centerHorizontal="true" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textAppearance="?android:attr/textAppearanceLarge"
        android:text="0"
        android:layout_below="@id/txtUsername"
        android:id="@+id/txtScannedCount"/>

    <TextView
        android:text="Scanned Today"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/textView"
        android:layout_below="@+id/txtScannedCount"
        android:layout_alignLeft="@+id/txtScannedCount"
        android:layout_alignStart="@+id/txtScannedCount" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textAppearance="?android:attr/textAppearanceLarge"
        android:text="0"
        android:id="@+id/txtInventoryCount"
        android:layout_below="@id/txtUsername"
        android:layout_alignRight="@+id/btnSearch"
        android:layout_alignEnd="@+id/btnSearch" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textAppearance="?android:attr/textAppearanceSmall"
        android:text="Inventory"
        android:id="@+id/textView4"
        android:layout_above="@+id/btnSearch"
        android:layout_toRightOf="@+id/textView"
        android:layout_toEndOf="@+id/textView"
        android:layout_marginLeft="153dp"
        android:layout_marginStart="153dp" />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/btn_searchvehicle"
        android:id="@+id/btnSearch"
        android:layout_below="@+id/textView"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_marginTop="46dp"
        android:layout_marginBottom="15dp"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true"
        android:background="@color/colorPrimary"
        android:backgroundTint="@color/colorPrimaryDark"
        android:textColor="@color/buttontext"
        android:onClick="NavSearchVechiclesPressed"/>

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/btn_scanbarcode"
        android:id="@+id/btnScanner"
        android:layout_below="@+id/btnSearch"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_alignRight="@+id/btnSearch"
        android:layout_alignEnd="@+id/btnSearch"
        android:background="@color/colorPrimary"
        android:backgroundTint="@color/colorPrimaryDark"
        android:textColor="@color/buttontext"
        android:onClick="NavScanBarcodePressed"/>

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textAppearance="?android:attr/textAppearanceSmall"
        android:text="Small Text"
        android:id="@+id/txtVersion"
        android:layout_alignParentBottom="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true"
        android:textColor="@color/divider"/>
</RelativeLayout>

通过Photoshop的魔力，这就是我想要的

---

我如何才能获得包含今日扫描和库存文本视图以及大型居中数字的布局？

我认为您希望文本视图文本水平居中对齐，在这种情况下，添加

android:gravity="center_horizontal"

---

对于文本视图

，您可以而且可能应该使用父relativeLayout中的其他布局。这样可以大大简化设计，避免所有设计都依赖于布局上的一个项目，如果删除其中一个文本视图，则布局的大部分都会重新定位，因为它们是相对于该文本视图的

代码中的一个快速示例如下：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    tools:context="com.mycompany.inventory.MainActivity">

    <Button
        android:id="@+id/btnSearch"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="@color/colorPrimary"
        android:backgroundTint="@color/colorPrimaryDark"
        android:onClick="NavSearchVechiclesPressed"
        android:layout_below="@+id/linearLayout3"
        android:layout_alignParentStart="true"
        android:layout_alignEnd="@+id/linearLayout3"
        android:layout_marginTop="50dp" />

    <Button
        android:id="@+id/btnScanner"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignEnd="@+id/btnSearch"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_alignRight="@+id/btnSearch"
        android:layout_below="@+id/btnSearch"
        android:background="@color/colorPrimary"
        android:backgroundTint="@color/colorPrimaryDark"
        android:onClick="NavScanBarcodePressed"
        android:layout_marginTop="20dp" />

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:id="@+id/linearLayout2">

        <ImageView
            android:id="@+id/logoView"
            android:layout_width="225dp"
            android:layout_height="90dp"
            android:layout_alignParentTop="true"
            android:layout_centerHorizontal="true"
            android:layout_marginBottom="20dp"
            android:layout_gravity="center_horizontal" />

        <TextView
            android:id="@+id/txtUsername"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_below="@+id/logoView"
            android:layout_centerHorizontal="true"
            android:text="USERNAME"

            android:textAppearance="?android:attr/textAppearanceMedium"
            android:layout_gravity="center_horizontal" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:layout_below="@+id/linearLayout2"
        android:layout_alignParentEnd="true"
        android:id="@+id/linearLayout3">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical"
            android:layout_weight="1">

            <TextView
                android:id="@+id/txtScannedCount"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_below="@id/txtUsername"
                android:text="0"
                android:textSize="50sp"
                android:layout_gravity="center_horizontal" />

            <TextView
                android:id="@+id/textView"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignLeft="@+id/txtScannedCount"
                android:layout_alignStart="@+id/txtScannedCount"
                android:layout_below="@+id/txtScannedCount"
                android:text="Scanned Today"
                android:layout_gravity="center_horizontal" />
        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical"
            android:layout_weight="1">

            <TextView
                android:id="@+id/txtInventoryCount"
                android:layout_width="wrap_content"
                android:textSize="50sp"
                android:layout_height="wrap_content"
                android:layout_alignEnd="@+id/btnSearch"
                android:layout_alignRight="@+id/btnSearch"
                android:layout_below="@id/txtUsername"
                android:text="0"
                android:layout_gravity="center_horizontal" />

            <TextView
                android:id="@+id/textView4"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_above="@+id/btnSearch"
                android:layout_toEndOf="@+id/textView"
                android:layout_toRightOf="@+id/textView"
                android:text="Inventory"
                android:textAppearance="?android:attr/textAppearanceSmall"
                android:layout_gravity="center_horizontal" />
        </LinearLayout>
    </LinearLayout>

</RelativeLayout>

我删除了文本、颜色和图像，但看起来与您想要的相似 尝试使用不同的子布局，这将使您的生活更轻松：

使用布局作为

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:background="@color/backgroundColor"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    tools:showIn="@layout/activity_main"
    tools:context="com.mycompany.inventory.MainActivity">

    <ImageView
        android:id="@+id/logoView"
        android:layout_width="225dp"
        android:layout_height="90dp"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:src="@drawable/mycompanylogo"
        android:layout_marginBottom="20dp"
        />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textAppearance="?android:attr/textAppearanceMedium"
        android:text="USERNAME"
        android:id="@+id/txtUsername"
        android:layout_below="@+id/logoView"

        android:layout_centerHorizontal="true" />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/btn_searchvehicle"
        android:id="@+id/btnSearch"
        android:layout_below="@+id/textView"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_marginTop="46dp"
        android:layout_marginBottom="15dp"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true"
        android:background="@color/colorPrimary"
        android:backgroundTint="@color/colorPrimaryDark"
        android:textColor="@color/buttontext"
        android:onClick="NavSearchVechiclesPressed"/>

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/btn_scanbarcode"
        android:id="@+id/btnScanner"
        android:layout_below="@+id/btnSearch"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_alignRight="@+id/btnSearch"
        android:layout_alignEnd="@+id/btnSearch"
        android:background="@color/colorPrimary"
        android:backgroundTint="@color/colorPrimaryDark"
        android:textColor="@color/buttontext"
        android:onClick="NavScanBarcodePressed"/>

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textAppearance="?android:attr/textAppearanceSmall"
        android:text="Small Text"
        android:id="@+id/txtVersion"
        android:layout_alignParentBottom="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true"
        android:textColor="@color/divider"/>

    <TextView
        android:id="@+id/txtInventoryCount"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@+id/textView4"
        android:layout_alignEnd="@+id/btnSearch"
        android:layout_toRightOf="@+id/logoView"
        android:text="0"
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <TextView
        android:id="@+id/txtScannedCount"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/txtUsername"
        android:layout_toLeftOf="@+id/logoView"
        android:text="0"
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignStart="@+id/txtScannedCount"
        android:layout_below="@+id/txtScannedCount"
        android:text="Scanned Today" />

    <TextView
        android:id="@+id/textView4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@+id/btnSearch"
        android:layout_alignParentRight="true"
        android:layout_marginStart="153dp"
        android:layout_toEndOf="@+id/textView"
        android:text="Inventory"
        android:textAppearance="?android:attr/textAppearanceSmall" />

</RelativeLayout>

试试这个

 <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
android:background="@color/backgroundColor"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:showIn="@layout/activity_main"
tools:context="com.mycompany.inventory.MainActivity">

<ImageView
    android:id="@+id/logoView"
    android:layout_width="225dp"
    android:layout_height="90dp"
    android:layout_alignParentTop="true"
    android:layout_centerHorizontal="true"
    android:src="@drawable/mycompanylogo"
    android:layout_marginBottom="20dp"
    />

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:textAppearance="?android:attr/textAppearanceMedium"
    android:text="USERNAME"
    android:id="@+id/txtUsername"
    android:layout_below="@+id/logoView"
    android:layout_centerHorizontal="true" />


<TextView
    android:text="Scanned Today"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginLeft="30dp"
    android:id="@+id/textView"
    android:layout_alignLeft="@+id/btnSearch"
    android:layout_alignStart="@+id/btnSearch"
    android:layout_below="@+id/txtScannedCount" />


<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:textAppearance="?android:attr/textAppearanceLarge"
    android:text="0"
    android:textSize="30sp"
    android:layout_below="@id/txtUsername"
    android:gravity="center_horizontal"
    android:id="@+id/txtScannedCount"
    android:layout_alignLeft="@+id/textView"
    android:layout_alignStart="@+id/textView"
    android:layout_alignRight="@+id/textView"
    android:layout_alignEnd="@+id/textView"
    />

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:textAppearance="?android:attr/textAppearanceLarge"
    android:text="0"
    android:textSize="30sp"
    android:gravity="center_horizontal"
    android:id="@+id/txtInventoryCount"
    android:layout_below="@id/txtUsername"
    android:layout_alignLeft="@+id/textView4"
    android:layout_alignStart="@+id/textView4"
    android:layout_alignRight="@+id/textView4"
    android:layout_alignEnd="@+id/textView4" />

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:textAppearance="?android:attr/textAppearanceSmall"
    android:text="Inventory"
    android:id="@+id/textView4"
    android:layout_marginRight="30dp"
    android:gravity="center_horizontal"
    android:layout_above="@+id/btnSearch"
    android:layout_alignRight="@+id/btnSearch"
    android:layout_alignEnd="@+id/btnSearch" />

<Button
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/btn_searchvehicle"
    android:id="@+id/btnSearch"
    android:layout_below="@+id/textView"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true"
    android:layout_marginTop="46dp"
    android:layout_marginBottom="15dp"
    android:layout_alignParentRight="true"
    android:layout_alignParentEnd="true"
    android:background="@color/colorPrimary"
    android:backgroundTint="@color/colorPrimaryDark"
    android:textColor="@color/buttontext"
    android:onClick="NavSearchVechiclesPressed"/>

<Button
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/btn_scanbarcode"
    android:id="@+id/btnScanner"
    android:layout_below="@+id/btnSearch"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true"
    android:layout_alignRight="@+id/btnSearch"
    android:layout_alignEnd="@+id/btnSearch"
    android:background="@color/colorPrimary"
    android:backgroundTint="@color/colorPrimaryDark"
    android:textColor="@color/buttontext"
    android:onClick="NavScanBarcodePressed"/>

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:textAppearance="?android:attr/textAppearanceSmall"
    android:text="Small Text"
    android:id="@+id/txtVersion"
    android:layout_alignParentBottom="true"
    android:layout_alignParentRight="true"
    android:layout_alignParentEnd="true"
    android:textColor="@color/divider"/>
 </RelativeLayout>