Android:如何创建带有滚动标题的对话框?

问题描述

好的，我已经阅读了 And Dev 网站上的自定义对话框说明http://developer.android.com/guide/topics/ui/dialogs.html#CustomDialog

Ok so I've read the Custom Dialog explanation on the And Dev website http://developer.android.com/guide/topics/ui/dialogs.html#CustomDialog

它向您展示了如何制作自定义对话框，而不是如何自定义标题！

It show's you how to make a custom dialog, but not how to customise the title!

基本上我的标题太长了，我希望它可以滚动(如 textview)，或者更好的是仍然有一个选框"效果，我认为它被称为.

Basically my title is too long and I want it to scroll (like textview) or better still have a 'marquee' effect i think it's called.

或者如果我不能让它滚动，给它更多的空间来换行！

Or if I can't make it scroll, give it more space to wrap onto more lines!

任何想法，我都不抱太大希望，因为它不在 android.dev 上 :-(

Any ideas, I don't hold out much hope as it's not on android.dev :-(

推荐答案

自定义窗口(以及对话框)标题可以通过请求窗口功能 CUSTOM_TITLE 来完成，这必须在 setContentView 之前完成.

Customizig window (and thus also dialog) titles can be done by requesting the window feature CUSTOM_TITLE, which must be done before setContentView.

因此，在您的 Dialog/Activity 子类 onCreate() 中，调用以下代码:

So in your Dialog / Activity subclasses onCreate(), call the following:

super.onCreate(savedInstance);
requestWindowFeature(Window.FEATURE_CUSTOM_TITLE); // <- insert this

然后，在您的 setContentView 之后，执行以下操作:

Then, after your setContentView, do this:

setContentView(R.layout.main);
getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.custom_title); // <- insert this

布局通常可以包含您想要的任何内容.对于选取框文本控件.例如这样做:

The layout can generally contain anything you want. For a marquee text control. e.g. do this:

布局/custom_title.xml:

layout/custom_title.xml:

<FrameLayout android:id="@+id/FrameLayout01" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    xmlns:android="http://schemas.android.com/apk/res/android"
    >
    <TextView android:id="@+id/caption_text" 
        android:layout_height="wrap_content" 
        android:layout_width="fill_parent" 
        android:text="This is a very very long text that will not fit into a caption regularly, so it will be displayed using marquee..." 
        android:lines="1"
        android:focusable="true"
        android:focusableInTouchMode="true"
        android:scrollHorizontally="true" 
        android:marqueeRepeatLimit="marquee_forever" 
        android:ellipsize="marquee"
        ></TextView>
</FrameLayout>

由于选取框功能的一些限制，必须使文本视图具有焦点，并且只有在获得焦点时才会滚动(最初应该是这样).

Due to some constraints with the marquee feature, the text view has to be made focusable and it will only be scrolling when focused (which it initially should be).

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