如何在Android中使用View Stub [英] How to use View Stub in android

问题描述

我想在android中使用ViewStub，所以请帮助我.我已经创建

I want to use ViewStub in android, so please help me. I have created

ViewStub stub = new ViewStub;
View inflated = stub.inflate(); 

如何以编程方式使用它?

How to use it programmatically?

推荐答案

就像文档说，ViewStub是一个懒惰地膨胀的View.

Like the documentation says, ViewStub is a View that is inflated lazily.

您可以在XML文件中声明一个ViewStub，如下所示:

You can declare a ViewStub in an XML file like this:

 <ViewStub android:id="@+id/stub"
           android:inflatedId="@+id/subTree"
           android:layout="@layout/mySubTree"
           android:layout_width="120dip"
           android:layout_height="40dip" />

android:layout属性是对View的引用，该引用将在inflate()的调用旁边被夸大.所以

The android:layout attribute is a reference to the View that will be inflated next to a call of inflate(). So

ViewStub stub = (ViewStub) findViewById(R.id.stub);
View inflated = stub.inflate();

调用方法inflate()时，会将ViewStub从其父级中移除，并替换为正确的View(mySubTree布局的根视图).

When the method inflate() is invoked the ViewStub is removed from its parent and replaced with the right View (the root view of mySubTree layout).

如果您要通过编程方式执行此操作，则您的代码应类似于:

If you want to do this progammatically then your code should be something like:

ViewStub stub = new ViewStub(this);
stub.setLayoutResource(R.layout.mySubTree);
stub.inflate(); 

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