如何在android中更改可绘制形状的颜色 [英] How to change color of drawable shapes in android

问题描述

我正在开发小型 android 应用程序，其中我将可绘制资源设置为线性布局的背景.现在我想要做的是动态更改线性布局的背景颜色，但在可绘制资源内.我的代码看起来像:

I am developing small android application in which I set drawable resource as background for linear layout. Now what I want to do change background color of linear layout dynamically, but within drawable resource. My code looks like :

//  bcd.xml
<selector xmlns:android="http://schemas.android.com/apk/res/android">

<item>        
    <shape>
        <gradient
            android:endColor="#22000000"
            android:startColor="#22000000"
            android:angle="270" />
        <stroke
            android:width="3dp"
            android:color="@color/white" />
        <corners
            android:radius="3dp" />
        <padding
            android:left="10dp"
            android:top="10dp"
            android:right="10dp"
            android:bottom="10dp" />
    </shape>
</item>

<LinearLayout 
android:id="@+id/lin_llt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
>

我在我的活动中为线性布局设置背景......

and I set background for linear layout in my activity like this...

parentLayout = (LinearLayout) view.findViewById(R.id.lin_llt);
parentLayout.setBackgroundResource(R.drawable.bcd);

现在我想做的是改变我的可绘制资源的颜色，这意味着改变我的线性布局的颜色，圆角和填充在可绘制中定义..

Now what I want to do i want to change color of my drawable resource that mean change color of my linear layout with rounded corner and padding define in drawable..

我尝试了以下方式

ShapeDrawable bgShape = (ShapeDrawable )parentLayout.getBackground();
bgShape.getPaint().setColor(Color.BLACK);

但它不适合我.任何其他解决方案.

but its not working for me. any other solution .

那该怎么做呢...需要帮忙...谢谢...

So how to do it... Need help... thank you...

推荐答案

动态改变布局颜色

LinearLayout Layout = (LinearLayout) findViewById(R.layout.id);
Layout.setBackgroundColor(Color.parseColor("#ffffff"));

动态设置背景色渐变

View layout = findViewById(R.id.mainlayout);

GradientDrawable gd = new GradientDrawable(
        GradientDrawable.Orientation.TOP_BOTTOM,
        new int[] {0xFF616261,0xFF131313});
gd.setCornerRadius(0f);

layout.setBackgroundDrawable(gd);

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