Dialog风格Activity全屏显示悬浮窗

当你需要在一个activity做一个选择菜单，或者其他可操作的悬浮的窗口时，你不能影响该activity的正常运行（比如播放器界面的播放画面不停止，动画不停止等），所以就需要考虑到Dialog风格的activity了，关键点就是设置dialog全屏显示，因为根据系统的theme.dialog风格，dialog的边界是限定了大小的。不能做出自己想要的悬浮窗风格，所以这个demo的参考就再这。简单，但是有用。

/** Automatically generated file. DO NOT MODIFY */
package com.example.fullscreendialogdemo;

public final class BuildConfig {
    public final static boolean DEBUG = true;
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件        475  2014-07-02 09:12  FullScreenDialogDemo\.classpath

     文件        856  2014-07-02 09:12  FullScreenDialogDemo\.project

     文件        177  2014-07-02 09:12  FullScreenDialogDemo\.settings\org.eclipse.jdt.core.prefs

     文件       1132  2014-07-02 09:37  FullScreenDialogDemo\AndroidManifest.xml

     文件       1132  2014-07-02 09:37  FullScreenDialogDemo\bin\AndroidManifest.xml

     文件        373  2014-07-02 09:14  FullScreenDialogDemo\bin\classes\com\example\fullscreendialogdemo\BuildConfig.class

     文件        967  2014-07-02 09:37  FullScreenDialogDemo\bin\classes\com\example\fullscreendialogdemo\DialogActivity.class

     文件       1161  2014-07-02 09:46  FullScreenDialogDemo\bin\classes\com\example\fullscreendialogdemo\MainActivity$1.class

     文件       1319  2014-07-02 09:46  FullScreenDialogDemo\bin\classes\com\example\fullscreendialogdemo\MainActivity.class

     文件        382  2014-07-02 09:46  FullScreenDialogDemo\bin\classes\com\example\fullscreendialogdemo\R$attr.class

     文件        503  2014-07-02 09:46  FullScreenDialogDemo\bin\classes\com\example\fullscreendialogdemo\R$dimen.class

     文件        488  2014-07-02 09:46  FullScreenDialogDemo\bin\classes\com\example\fullscreendialogdemo\R$drawable.class

     文件        499  2014-07-02 09:46  FullScreenDialogDemo\bin\classes\com\example\fullscreendialogdemo\R$id.class

     文件        484  2014-07-02 09:46  FullScreenDialogDemo\bin\classes\com\example\fullscreendialogdemo\R$layout.class

     文件        460  2014-07-02 09:46  FullScreenDialogDemo\bin\classes\com\example\fullscreendialogdemo\R$menu.class

     文件        559  2014-07-02 09:46  FullScreenDialogDemo\bin\classes\com\example\fullscreendialogdemo\R$string.class

     文件        508  2014-07-02 09:46  FullScreenDialogDemo\bin\classes\com\example\fullscreendialogdemo\R$style.class

     文件        813  2014-07-02 09:46  FullScreenDialogDemo\bin\classes\com\example\fullscreendialogdemo\R.class

     文件     557816  2014-07-02 09:51  FullScreenDialogDemo\bin\classes.dex

     文件     189231  2014-07-02 09:51  FullScreenDialogDemo\bin\dexedLibs\android-support-v4-3ac97c6207f4de3e91a3b95713035d90.jar

     文件        943  2014-07-02 09:51  FullScreenDialogDemo\bin\dexedLibs\annotations-c30e8f9c582c00a597b9781bed9804da.jar

     文件     236873  2014-07-02 09:51  FullScreenDialogDemo\bin\FullScreenDialogDemo.apk

     文件        120  2014-07-02 09:14  FullScreenDialogDemo\bin\jarlist.cache

     文件       5964  2014-07-02 09:51  FullScreenDialogDemo\bin\res\crunch\drawable-hdpi\ic_launcher.png

     文件       3112  2014-07-02 09:51  FullScreenDialogDemo\bin\res\crunch\drawable-mdpi\ic_launcher.png

     文件       9355  2014-07-02 09:51  FullScreenDialogDemo\bin\res\crunch\drawable-xhdpi\ic_launcher.png

     文件      17889  2014-07-02 09:51  FullScreenDialogDemo\bin\res\crunch\drawable-xxhdpi\ic_launcher.png

     文件      42954  2014-07-02 09:51  FullScreenDialogDemo\bin\resources.ap_

     文件        174  2014-07-02 09:12  FullScreenDialogDemo\gen\com\example\fullscreendialogdemo\BuildConfig.java

     文件       2952  2014-07-02 09:46  FullScreenDialogDemo\gen\com\example\fullscreendialogdemo\R.java

............此处省略63个文件信息