不规则窗体

1.新建一个Theme,搞一张有透明四周的背景图

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <style name="MyBubbleTheme" parent="style/Theme.AppCompat.Dialog" >
        <item name="android:windowBackground">@drawable/bg_bubble</item>
    </style>
</resources>

若继承Activity

    android:theme="@android:style/Theme.Dialog"

 

2.在Manifest中配置

<activity
    android:name=".EditActivity"
    android:label="@string/title_activity_edit"
    android:theme="@style/MyBubbleTheme">
</activity>