Android代碼在線性佈局中的不同顏色邊框顏色

Question

我想用Java代碼繪製不同顏色的線性佈局邊框，不使用xml文件

如果可能的話？請給我代碼。

謝謝

Answer 1

您只需要創建一個九個補丁的圖像並設置背景。

Answer 2

對於Android，LinearLayout佈局不帶邊框屬性。但是，您可以將LinearLayout的背景設置爲9補丁圖像。

只要將其鏈接回您的Java文件，您就可以修改您創建的xml文件上的任何內容。

例子： 如果您的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> 

然後在你的Java文件，你不得不這樣做：如果你

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); 
}