Android 带有圆角的 NavigationView

Android NavigationView vith rounded corners

我正在Android上设计一个自定义抽屉,它的顶部和底部必须有圆角,我是首先自定义顶部,我发现 形状的背景不透明 .

我有:

(来源:toile-libre.org

我需要构建:

(来源:toile-libre.org

我还需要一些关于如何在底部将其四舍五入的帮助

nav_header_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="@dimen/nav_header_height"
    android:background="@drawable/side_nav_bar"
    android:gravity="bottom"
    android:orientation="vertical"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:theme="@style/ThemeOverlay.AppCompat.Dark">
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="horizontal">
        <ImageView
            android:id="@+id/imageView"
            android:layout_width="0dp"
            android:layout_weight="4"
            android:layout_height="wrap_content"
            android:contentDescription="@string/nav_header_desc"
            android:paddingTop="@dimen/nav_header_vertical_spacing"
            app:srcCompat="@mipmap/ic_launcher_round" />
        <LinearLayout
            android:layout_width="0dp"
            android:layout_weight="5"
            android:layout_height="wrap_content"
            android:orientation="vertical">
            <TextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:paddingTop="@dimen/nav_header_vertical_spacing"
                android:text="@string/nav_header_title"
                android:textColor="@color/colorWhite"
android:textAppearance="@style/TextAppearance.AppCompat.Headline" />
            <TextView
                android:id="@+id/textView"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textColor="@color/colorWhite"
                android:text="@string/nav_header_subtitle" />
        </LinearLayout>
    </LinearLayout>
</LinearLayout>

side_nav_bar.xml

<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">

<solid android:width="3dp"
    android:color="@color/colorPrimary"
    />
<corners android:radius="1dp"
    android:bottomRightRadius="0dp" android:bottomLeftRadius="0dp"
    android:topLeftRadius="30dp" android:topRightRadius="0dp"/>
</shape>

添加左下角半径

<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">

<solid android:width="3dp"
    android:color="@color/colorPrimary"
    />
<corners android:radius="1dp"
    android:bottomRightRadius="0dp" android:bottomLeftRadius="30dp"
    android:topLeftRadius="30dp" android:topRightRadius="0dp"/>
</shape>

如果您使用 NavigationView in the Material Components library, you can apply a custom ShapeAppearanceModelNavigationView 的角落。

类似于:

float radius = getResources().getDimension(R.dimen.roundcorner);
NavigationView navigationView = findViewById(R.id.nav_view);
MaterialShapeDrawable navViewBackground = (MaterialShapeDrawable) navigationView.getBackground();
    navViewBackground.setShapeAppearanceModel(
        navViewBackground.getShapeAppearanceModel()
            .toBuilder()
            .setTopRightCorner(CornerFamily.ROUNDED,radius)
            .setBottomRightCorner(CornerFamily.ROUNDED,radius)
            .build());

这样 NavigationView 就有了圆角。
现在你要注意 header 布局在顶部建立一个圆角。您必须将 header 视图用作背景,例如:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:background="@drawable/side_nav_bar" 
    ...>

side_nav_bar 是

<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
     ....
     <corners android:topRightRadius="32dp" />
</shape>

不要在底部使用圆角,因为它只是在 NavigationView 的 header 上使用的视图。

ShapeAppearanceModel 需要 material 个组件的版本 1.1.0(目前 'com.google.android.material:material:1.1.0-alpha10'

在 Kotlin 语言中创建一个 class 来进行扩展:

fun MaterialNavigationView.changeCornerRadius() {
    val navViewBackground : MaterialShapeDrawable = background as MaterialShapeDrawable
    val radius = resources.getDimension(R.dimen.menu_radius)
    navViewBackground.shapeAppearanceModel = navViewBackground.shapeAppearanceModel
        .toBuilder()
        .setTopLeftCorner(CornerFamily.ROUNDED, radius)
        .setBottomLeftCorner(CornerFamily.ROUNDED, radius)
        .build()
}

用法:

val materialNavigationView: MaterialNavigationView = findViewById(R.id.material_navigation_view)
materialNavigationView.changeCornerRadius()

如果你不想使用MaterialShapeDrawable,下面的方法。 这也是我认为最好的方式。

首先,调整导航视图背景的不透明度。 二、Round the layout inside Navigation View

❖ 但是,注意上下视图的背景。

layout_gnb.xml

<com.google.android.material.navigation.NavigationView
xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/NAVIGATION_VIEW"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#00000000">

    <LinearLayout
        android:id="@+id/LINEAR_LAYOUT_03"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:background="@drawable/rounded_right_corner_light_white_rectangle">
    ...
    </LinearLayout>

</com.google.android.material.navigation.NavigationView>

rounded_right_corner_light_white_rectangle.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    <corners android:topRightRadius="30dp" 
             android:bottomRightRadius="30dp" />
    <solid android:color="@color/colorLightWhite" />
</shape>