效果圖修改前：

image.png

效果圖修改后：

image.png

orange_shape文件

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">

    <gradient android:angle="0"
        android:startColor="@android:color/holo_red_dark"
        android:centerColor="@android:color/holo_green_dark"
        android:endColor="@android:color/holo_blue_light"/>

</shape>

布局layout

 <View
        android:id="@+id/topView"
        android:layout_width="match_parent"
        android:layout_height="40dp"
        android:background="@drawable/orange_shape" />

activity(這種方案必須有設(shè)置shape后才能使用)

int[] colorsTwo = {Color.parseColor("#FFA538"),Color.parseColor("#FFC848"),Color.parseColor("#FFC848"),};
GradientDrawable backView = (GradientDrawable) view.getBackground();
backView.setColors(colorsTwo);

另外一種方案

int[] colors = {0xFFFF9326,0xFFFFC54E};
int[] colors = {Color.parseColor("#ffffff"),Color.parseColor("#ffffff")};
GradientDrawable drawable = new GradientDrawable(GradientDrawable.Orientation.LEFT_RIGHT,colors);
drawable.setCornerRadius(0);
view.setBackground(drawable);

有更好的實(shí)現(xiàn)方案，希望小伙伴給與文章參考連接或思路