Description:
Use DownloadManager download APK, through ContentObserver show progress bar dialog, register roadcastReceiver when 「ACTION_DOWNLOAD_COMPLETE」automatically open install view.
p.s. Android 6.0,7.0 work perfectly.
Blog Article(Chinese):https://solinariwu.blogspot.tw/2017/03/android-downloadmanagerapkandroid-60-70.html
Reference:
http://blog.csdn.net/u013277740/article/details/51737080