activity 设置dialog

styles:

<style name="dialog_theme" parent="@android:style/Theme.Holo.Dialog.NoActionBar">

<item name="android:background">@drawable/dialog_bg</item> 背景圆角

<item name="android:windowBackground">@android:color/transparent</item> 主题透明

</style>

manifest: activity通过style 设为dialog显示

<activity

android:name=".ProgressDialogActivity"

android:label="@string/title_activity_progress_dialog"

android:theme="@style/dialog_theme">

</activity>