Android：如何使用XML进行自定义视图布局

Question

I'm coming from the world of GWT and UIBinder, where I'm used to defining custom components by extending Composite, and then putting all the UI layout code in a MyComponent.ui.xml file. This is a very nice way to build up components from smaller pieces.

I'm trying to achieve the same effect on Android with custom Views. I've been able to programmatically extend View , and then add objects by calling addView(textView) . I'd like to be able to do that in XML, but I don't see how to associate an xml layout file with the view (apart the primary res/layout/main.xml file, which provides the primary layout for the app.

How can I layout my custom views in XML?

Edit: My question was unclear. What I'm looking to do is associate a my_widget.xml file with my customized view. Then in my_widget.xml I'd like to define various TextViews, etc, and plug them into my View class.

Answer 1

Use the fully qualified name of your custom view class in place of one of the built-in views. Here's a layout, for instance, that fills the window with your class:

<?xml version="1.0" encoding="utf-8"?>
<my.package.MyCustomView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/my_view"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    />

Answer 2

要从XML构造视图，请使用LayoutInflater 。

Answer 3

You can use findViewById (int id) with an id defined in XML. See the example in the android doc here (scroll down to IDs ).