Question

我想用Java代码绘制不同颜色的linearlayout边框，而不是使用xml文件

如果可能的话？请给我代码。

由于

Answer 1

对于Android，LinearLayout布局没有border属性。但是，您可以将LinearLayout的背景设置为9补丁图像。

只要将其链接回Java文件，就可以修改正在创建的xml文件中的任何内容。

实施例：如果你的xml文件是：

<?xml version="1.0" encoding="utf-8"?>

<!-- note that the id is linearlayout. That's important, you want the id to be something you can use to identify that element. -->
<LinearLayout`
    xmlns:android="http://schemas.android.com/apk/res/android"`
android:id="@+id/linearlayout"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
</LinearLayout>

然后在你的Java文件中你必须这样做：

public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState);
    setContentView(R.layout.whateverXMLFile);

    //get the Linear Layout you're searching for 
    LinearLayout linLayout = (LinearLayout) findViewById(R.id.linearlayout);

    /*background is your background image you want to replace with. 
     * You can use any that is in your drawable resource. 
     * Better to use a 9 sketch because it'll expand to fit your width/height, no matter
     * how big or small your layout will be. 
     */
    linLayout.setBackgroundResource(R.drawable.background);


    //if you want to set the background colour: 
    //will set it to RED, you can also specify a resource file you may have for it 
    linLayout.setBackground(Colour.RED);
}

Answer 2

您只需要创建九个补丁图像并设置背景。

Android中不同颜色边框颜色的线性布局代码

2 个答案: