如何创建对话，这将是完全在水平维度 [英] How to create dialog which will be full in horizontal dimension

问题描述

当我在布局，指定此对话框中使用机器人：layout_width =match_parent我得到这个对话框：

When I use in layout, which specifies this dialog android:layout_width="match_parent" I get this dialog:

我需要对话，这将是更广泛的。任何想法？

I need dialog which will be wider. Any ideas?

推荐答案

您可以做到这一点通过抓住窗口对象的对话框中使用，并重置宽度。这里有一个简单的例子：

You can do that by grabbing the Window object that the dialog uses, and resetting the width. Here's a simple example:

//show the dialog first
AlertDialog dialog = new AlertDialog.Builder(this)
        .setTitle("Test Dialog")
        .setMessage("This should expand to the full width")
        .show();
//Grab the window of the dialog, and change the width
WindowManager.LayoutParams lp = new WindowManager.LayoutParams();
Window window = dialog.getWindow();
lp.copyFrom(window.getAttributes());
//This makes the dialog take up the full width
lp.width = WindowManager.LayoutParams.MATCH_PARENT;
lp.height = WindowManager.LayoutParams.WRAP_CONTENT;
window.setAttributes(lp);

下面是最终的结果。请注意，有很多更造型可以做的对话框，如果你需要进行微调的东西（如更换背景等）。当我不得不这样做，在过去，我通常使用这种方法，而使用自定义对话框中使用的setView布局（）的生成器类。

Here's the end result. Note that there's a lot more styling you can do to the dialog if you need to fine tune things (like change the background, etc). When I've had to do this in the past, I usually use this method, and customize the layout used in the dialog with setView() on the builder class.

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