Android，去除Dialog的边框
a.首先为这个半透明弹窗新建一个名为dialog.xml的Layout
b.res/values文件夹新建名为 dialogStyle.xml的resources样式文件，具体代码如下：

     <?xml version="1.0" encoding="utf-8"?>        <resources>            <style name="dialog" parent="@android:style/Theme.Dialog">                <item name="android:windowFrame">@null</item>                <item name="android:windowIsFloating">true</item>                <item name="android:windowIsTranslucent">false</item>                <item name="android:windowNoTitle">true</item>                <item name="android:windowBackground">@drawable/dia_bg</item>                <item name="android:backgroundDimEnabled">false</item>            </style>        </resources>

         View diaView=View.inflate(this, R.layout.dialog, null);        dialog=new Dialog(AuthorizeActivity.this,R.style.dialog);//这里应用了你的自定义样式        dialog.setContentView(diaView);        dialog.show();