unity3d - Installing Android apk from Unity Application -


i read this post , write below code lines installing .apk file in unity application :

        androidjavaclass unityplayer = new androidjavaclass("com.unity3d.player.unityplayer");         androidjavaobject currentactivity = unityplayer.getstatic<androidjavaobject>("currentactivity");         androidjavaobject unitycontext = currentactivity.call<androidjavaobject>("getapplicationcontext");          //get package name         string packagename = unitycontext.call<string>("getpackagename");         string authority = packagename + ".fileprovider";          androidjavaclass intentobj = new androidjavaclass("android.content.intent");         string action_view = intentobj.getstatic<string>("action_view");         androidjavaobject intent = new androidjavaobject("android.content.intent", action_view);           int flag_activity_new_task = intentobj.getstatic<int>("flag_activity_new_task");         int flag_grant_read_uri_permission = intentobj.getstatic<int>("flag_grant_read_uri_permission");          //file fileobj = new file(string pathname);         androidjavaobject fileobj = new androidjavaobject("java.io.file", filepath);         //fileprovider object used call static function         androidjavaclass fileprovider = new androidjavaclass("android.support.v4.content.fileprovider");         //geturiforfile(context context, string authority, file file)         androidjavaobject uri = fileprovider.callstatic<androidjavaobject>("geturiforfile", unitycontext, authority, fileobj);          intent.call<androidjavaobject>("setdataandtype", uri, "application/vnd.android.package-archive");         intent.call<androidjavaobject>("addflags", flag_activity_new_task);         intent.call<androidjavaobject>("addflags", flag_grant_read_uri_permission);         currentactivity.call("startactivity", intent); 

but after running , call function application forced stop. here android manifest :

<?xml version="1.0" encoding="utf-8"?>  <manifest xmlns:android="http://schemas.android.com/apk/res/android"      package="store.narenjgame.store"      android:versioncode="1.2"      android:versionname="1.0" >        <uses-sdk          android:minsdkversion="19"          android:targetsdkversion="23" />        <uses-permission android:name="android.permission.internet" />      <uses-permission android:name="android.permission.access_network_state" />  	<uses-permission android:name="android.permission.install_packages" />      <uses-permission android:name="android.permission.write_external_storage" />      <uses-permission android:name="android.permission.read_external_storage" />        <application android:icon="@drawable/app_icon"   				android:label="@string/app_name"   				android:debuggable="false"  				android:supportsrtl="true"  				android:allowbackup="true">  	  	  	    <activity android:name="com.unity3d.player.unityplayernativeactivity" android:label="@string/app_name" android:screenorientation="fullsensor" android:launchmode="singletask" android:configchanges="mcc|mnc|locale|touchscreen|keyboard|keyboardhidden|navigation|orientation|screenlayout|uimode|screensize|smallestscreensize|fontscale">          <intent-filter>            <action android:name="android.intent.action.main" />            <category android:name="android.intent.category.launcher" />            <category android:name="android.intent.category.leanback_launcher" />          </intent-filter>          <meta-data android:name="unityplayer.unityactivity" android:value="true" />          <meta-data android:name="unityplayer.forwardnativeeventstodalvik" android:value="false" />        </activity>      </application>    </manifest>

my android device sdk version 24. how can install apk in unity android application?


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