Android LayerDrawable资源应用

1.介绍

(1)常识

(2)特点

2.实例演示

<1>新建drawable文件

app--->src---->main---->res---->drawable ,选中drawable文件夹，右击new--->drawable resource file

<2>xml文件代码

(1)layer1代码

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:id="@android:id/background"
        android:drawable="@drawable/grow"></item>
    <item android:id="@android:id/progress"
        android:drawable="@drawable/ok"></item>
</layer-list>

(2)layer2代码

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <bitmap android:src="@drawable/img1" android:gravity="center"></bitmap>
    </item>
    <!--注意：第二个item与第一个item有一定的间距（左边14dp,上边14dp）-->
    <item android:left="14dp" android:top="14dp" >
        <bitmap android:src="@drawable/img2" android:gravity="center"></bitmap>
    </item>
    <item android:left="28dp" android:top="28dp" >
        <bitmap android:src="@drawable/img3" android:gravity="center"></bitmap>
    </item>
</layer-list>

(3)主屏幕XML代码

<?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"
    xmlns:tools="http://schemas.android.com/tools"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">


    <SeekBar
        android:id="@+id/seekBar"
        android:progressDrawable="@drawable/layer1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

    <ImageView
        android:id="@+id/imageView"
        android:layout_width="188dp"
        android:layout_height="188dp"
        app:srcCompat="@drawable/layer2" />
</LinearLayout>

标签：文件,file,代码,app,应用,LayerDrawable,Android,drawable
来源： https://www.cnblogs.com/luckyplj/p/10493968.html