qt for android 实现悬浮窗

在qt for android上实现的悬浮窗，程序比较粗糙，第一次运行需要允许overlay权限，可以简单参考下

#include 
#include 

#include 
#include “launchapplication.h“


int main（int argc char *argv[]）
{
    QGuiApplication app（argc argv）;

    QQmlApplicationEngine engine;
    engine.load（QUrl（QStringLiteral（“qrc:/main.qml“）））;
    engine.rootContext（）->setContextProperty（“launchApp“ new launchApplication）;

    if （engine.rootobjects（）.isEmpty（））
        return -1;

    return app.exec（）;
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2018-01-24 03:37  StartBackCam\
     文件          87  2017-11-13 06:59  StartBackCam\qml.qrc
     文件         730  2017-11-21 07:11  StartBackCam\main.qml
     文件        1491  2017-11-21 07:28  StartBackCam\StartBackCam.pro
     文件        1868  2017-11-28 03:55  StartBackCam\launchapplication.h
     文件         448  2017-12-12 09:19  StartBackCam\main.cpp
     文件       49420  2018-01-24 03:37  StartBackCam\StartBackCam.pro.user
     目录           0  2018-01-24 03:30  StartBackCam\android\
     文件        2207  2017-11-13 07:32  StartBackCam\android\gradlew.bat
     文件        5330  2017-11-13 07:32  StartBackCam\android\gradlew
     文件        1502  2017-11-13 07:32  StartBackCam\android\build.gradle
     文件        5566  2018-01-24 03:30  StartBackCam\android\AndroidManifest.xml
     文件         333  2018-01-24 03:15  StartBackCam\android\gradle.properties
     文件         222  2018-01-24 03:15  StartBackCam\android\local.properties
     目录           0  2017-11-13 10:15  StartBackCam\android\src\
     目录           0  2017-11-13 07:32  StartBackCam\android\gradle\
     目录           0  2017-11-21 08:03  StartBackCam\android\res\
     目录           0  2017-11-13 10:15  StartBackCam\android\src\com\
     目录           0  2017-11-13 07:32  StartBackCam\android\gradle\wrapper\
     文件         230  2017-11-13 07:32  StartBackCam\android\gradle\wrapper\gradle-wrapper.properties
     文件       54213  2017-11-13 07:32  StartBackCam\android\gradle\wrapper\gradle-wrapper.jar
     目录           0  2017-11-23 06:07  StartBackCam\android\res\drawable\
     文件         715  2017-11-21 07:57  StartBackCam\android\res\drawable\button_back.png
     文件         339  2017-11-23 06:06  StartBackCam\android\res\drawable\btn_back.PNG
     目录           0  2017-11-13 07:32  StartBackCam\android\res\values\
     文件         652  2017-11-13 07:32  StartBackCam\android\res\values\libs.xml
     目录           0  2017-11-13 10:15  StartBackCam\android\src\com\dynavin\
     目录           0  2017-11-28 03:52  StartBackCam\android\src\com\dynavin\example\
     文件        3360  2017-11-22 10:04  StartBackCam\android\src\com\dynavin\example\QtFullscreenActivity.java
     文件       13687  2017-11-28 03:52  StartBackCam\android\src\com\dynavin\example\TopWindowService.java
     文件        1463  2017-11-17 08:22  StartBackCam\android\src\com\dynavin\example\AndroidApi.java
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