Android支持库22.1和AlertDialog错误？

Question

I tried to update my AlterDialog to the new android.support.v7.app.AlertDialog, just changing the:

import android.app.AlertDialog

to

import android.support.v7.app.AlertDialog

The new AlertDialogs are shown as Material style now on Pre-Lollipop, but the dialog window is much wider (tested on a Tablet). Is this not a bug? Should be the android.support.v7.app.AlertDialog the same width than android.app.AlertDialog?

Answer 1

It is a Material specification.

However you can customize this spec, usign a custom theme. For example something like this:

<style name="AppCompatAlertDialogStyle" parent="Theme.AppCompat.Light.Dialog.Alert">
       <!-- background, accent color..... -->

       <item name="windowMinWidthMajor">30%</item>
       <item name="windowMinWidthMinor">30%</item>
   </style>

Answer 2

Material design generally makes use of more whitespace and greater margins / padding than previous Android design, so no - it's not a bug.

It matches the specifications listed here: http://www.google.com/design/spec/components/dialogs.html