如何在内部文件目录中运行安装应用程序？

Question

I have some lines of code and apk file in internal cache dir:

Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.fromFile(newFile(context.getCacheDir() + "/update.apk")), "application/vnd.android.package-archive");
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);

But I had a parsing error: "There was a problem parsing the package"

Thank You for helping!

Answer 1

Third-party apps, including the package installer, have no access rights to that file.

On Android N, they have finally fixed the problem with installing apps via a ContentProvider , like FileProvider . For versions prior to that, you can install from external storage , or maybe use MODE_WORLD_READABLE (deprecated, and banned on Android N) to allow that file to be read from internal storage .