Android 对话框黑色边框的解决

代码解决 ：

Dialog dialog = new Dialog(this);  
Window win = dialog.getWindow();  
win.setBackgroundDrawableResource(android.R.color.transparent);  

 样式+代码  

<style name="info_dialog" parent="android:style/Theme.Dialog">  
<item name="android:windowBackground">@android:color/transparent</item>  
</style>