I have this LinearLayout:
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<ImageView
android:layout_width="100dp"
android:layout_height="70dp"
android:src="@drawable/ic_launcher"
android:scaleType="centerCrop"/>
<TextView
android:layout_width="100dp"
android:layout_height="30dp"
android:background="#FFD800"
android:textColor="@android:color/black"
android:gravity="center"
android:text="Text View"/>
</LinearLayout>

And I want to mask it with rounded corner, like this:

I tried to put it in a FrameLayout with another layout with shape.xml on top of it,
But the most I got was:

or

I'm looking for a way to use shape.xml background,
But with transparent inside the border, and white color outside.
My shape.xml:
<shape
xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid
android:color="#FFFFFF">
</solid>
<stroke
android:width="2dp"
android:color="#000000" >
</stroke>
<padding
android:left="5dp"
android:top="5dp"
android:right="5dp"
android:bottom="5dp">
</padding>
<corners
android:radius="50dp">
</corners>
</shape>
Create a nine-patch with white rounded corners outside, transparent in the middle, ("inverse nine-patch") and put it on top on your LinearLayout. This is a common practice.
Tried out below xml file
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" >
<stroke
android:width="1dp"
android:color="#4a6176" />
<padding
android:left="10dp"
android:right="10dp"
/>
<corners android:radius="6dp" />
</shape>
Just remove <solid>
tag from your shape. Then apply that shape to the background of your LinearLayout
.
Because the <solid>
tag specifies the fill color of your shape.
Without that tag the center of your shape will be fully transparent.
So it will look just like a border.
make your layout background like this: android:background="@drawable/shape"
来源:https://stackoverflow.com/questions/25762867/mask-layout-with-rounded-corner-xml-shape