Example of adding a border to the view component in the android development tutorial
- 2020-05-27 07:09:32
- OfStack
There are three solutions for adding a border (stroke in the technical sense) to TextureView:
1. Set 1 9 patch, right border, with empty PNG in the middle.
2. Customize 1 View and draw a border with Canvas.
3. Define a border using the ShapeDrawable provided by Android.
Compared with others, I suggest using the third method, because the third method only needs to write XML, which is fast, occupies little resources, and is easy to maintain.
Usage:
1. Define one background.xml file.
<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<stroke
android:width="2dp"
android:color="#0000AA" />
</shape> <span></span>
2. Just use View's src to set the background.
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:src="@drawable/background"
android:padding="2dp">
<TextureView
android:layout_width="match_parent"
android:layout_height="match_parent"/>
<com.android.camera.ui.RotateLayout
android:layout_width="wrap_content"
android:layout_width="wrap_content">
<TextView
android:layout_width="wrap_content"
android:layout_width="wrap_content"
android:textColor="#FFFFFF"
android:textSize="22sp"
android:background="#0000000"/>
</com.android.camera.ui.RoateLayout>
</RelativeLayout>
Note that I set Drawable for RelativeLayout, the parent container of TextureView, and Padding.