title: Open apk file after download via DownloadManager
body: <p>I have downloadManager with BrocastReceiver for knowing when download completed,
  the file is new version of current running application
  and both have same package name
  after i run below code i get a popup screen that show some application to run downloaded apk and i can't install apk</p>
  
  <pre><code>Intent intent2 = new Intent(Intent.ACTION_VIEW);
  Uri apkUri = Uri.fromFile(new File(uriString));
  intent.setDataAndType(Uri.fromFile(new File(Environment.DIRECTORY_DOWNLOADS, "kara.apk")),"application/vnd.android.package-archive");
  intent.setDataAndType(apkUri, "application/vnd.android.package-archive");
  startActivity(intent2);
  </code></pre>
  
  <p>thank in advance for your help</p>