java代碼
//大
GradientDrawable layer1 = new GradientDrawable(GradientDrawable.Orientation.LEFT_RIGHT, new int[]{Color.parseColor("#00f4ff"), Color.parseColor("#43C8FF")});
layer1.setShape(GradientDrawable.RECTANGLE);
//小
GradientDrawable layer2 = new GradientDrawable(GradientDrawable.Orientation.LEFT_RIGHT, new int[]{Color.parseColor("#00f4ff"), Color.parseColor("#43C8FF")});
layer2.setShape(GradientDrawable.RECTANGLE);
//陰影
ColorDrawable layer3 = new ColorDrawable(Color.parseColor("#F0F0F0"));
layer3.setAlpha(7);
LayerDrawable layerDrawable = new LayerDrawable(new Drawable[]
{layer1, layer2,layer3});
layerDrawable.setLayerWidth(1, 20);
layerDrawable.setLayerWidth(2, 20);
mIvMainBg.setBackground(layerDrawable);
xml
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape android:shape="rectangle">
<gradient
android:angle="0"
android:endColor="#43C8FF"
android:startColor="#00f4ff" />
</shape>
</item>
<item android:width="16px">
<shape android:shape="rectangle">
<gradient
android:angle="180"
android:endColor="#00f4ff"
android:startColor="#43C8FF" />
<!-- <stroke-->
<!-- android:color="#00E5F0"-->
<!-- android:width="1dp"/>-->
</shape>
</item>
<item android:width="20dp">
<shape android:shape="rectangle">
<solid android:color="#10F0F0F0" />
</shape>
</item>
</layer-list>
